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Firmware Release Notes - BTM510/BTM511

1. Resolved Issued compared to 14 1 1 1 fS504 1 silent operation enable the CONNECT message was not suppressed on ATO this has been fixed Ref 1 27 New 308 is automating the workaround of AT BTX after creation of A2DP connection Ref 1 23 FIRMWARE VERSION 14 1 1 1 ENGINEERING FIRMWARE Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New Features compared to v14 1 1 0 Support for simultaneous A2DP HFP added Support for extended inquiry response EIR data enhanced enabling up to 240 Bytes of EIR data New AT Commands AT APU suspend A2DP streaming but retain A2DP link AT APR resume A2DP streaming AT BTE clear EIR data from baseband AT BTE query EIR data from baseband AT BTE data write EIR data to RAM buffer and baseband Embedded Wireless Solutions Support 42 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x AT BTE delete EIR data from RAM buffer and baseband AT BTE data append EIR data to RAM buffer AT BTE copy EIR data from RAM buffer to baseband AT BTE query EIR RAM buffer AT BTE clear EIR RAM buffer AT BTEW copy EIR RAM buffer to persis
2. A2DP SNK when connected to an A2DP source and streaming audio sometimes gaps in the audio stream have been observed This was due to the module still being in discoverable and connectable state after A2DP has connected The problem could be solved by issuing AT BTX make module not discoverable and not connectable Ref 1 23 Undocumented usage of LED1 to indicate audio related states e g loopback can disturb normal operation of LED1 Ref 1 24 Module is not discoverable after releasing an SPP connection ATH while 512 4 Ref 1 25 Interoperability Tests with Mobile Phones HTC Touchpro 2 windows mobile BT2 1 Inquiry Pairing no serious issues HFP HF no serious issues HSP HS incoming connection accepted by phone but no audio is initiated by phone when AT HSB was issued at BIM DUN DT no issues Sony Ericsson K800i Inquiry Pairing no issues BT HFP HF no issues HSP HS not supported by phone DUN DT no issues Nokia E71 BT 2 0 Inquiry Pairing BTM can be found by phone pairing can be initiated by phone HFP HF connection from BTM is accepted but released immediately by the phone HSP HS Not tested DUN DT Not tested Embedded Wireless Solutions Support 46 Laird Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2923 0610 Center http ews support lairdtech com www lairdtech com bluetooth
3. New Features compared to v18 1 3 5 Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages Auto connect service ACS allowing automatic connection or re connection initiated by BTM51x Auto connect records ACR allowing flexible configuration of ACS Status information for all connected profiles Setlocal HCI role manually or automatically per profile on connect YES NO button for secure simple pairing as new GPIO functions Connectable discoverable by GPIO optional time window S371 Link supervision timeout 535 applies to outgoing connections of all profiles now new default value 5 s Error message codes changed from 2 to 3 digits with leading zeroes Trusted AT BTT device list now organised as FIFO Bug fixes for a couple of known issues see below Other Features Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages Profile Mask New AT Commands AT SR role profile mask request local HCI role for one given profile ATI54 Print remote device s Bluetooth addresses of connected profiles ATI55 Print RSSI receiver strength indicator for connected profiles ATI56 Print local HCI role for
4. Workaround a recommended use AT BTW lt BdAddr gt to initiate new pairing to generate new link keys on both devices Workaround b the link key for the remote device can be deleted from the trusted device list AT BTD lt BdAddr gt or from cache AT BTDW A new connection attempt AT SPD lt BdAddr gt should initiate new pairing automatically However this might not work with some legacy BT2 0 and earlier devices Hence workaround a is recommended It has been observed that the audio related USMs for HFP and HSP e g HF AUT1 HFG AUT HS AUT HSG AU1 can appear as AUDIO ON SCO or AUDIO ON eSCO This not intended and can happen if SPP is enabled along with HFP or HSP Workaround disable SPP in S102 if not needed Ref 2 7 1 26 ATH and ATH111E do not work with HS instance Headset unit of HSP workaround use AT HSH instead Ref 2 10 HFG call records There are currently no AT command available for the following purposes Clear a waiting call Ref 2 11 1 16 Make a held call active Ref 2 12 1 17 Clear a held call Ref 2 13 1 18 HFG AT HFGE ext err code an issue with extended error codes has been observed AT HFGE lt ext_err_code gt does not work as expected Workaround do not use extended error codes but simple error messages i e AT HFGE without parameter Ref 2 14 1 10 EIR after repeatedly issuing AT BTE or AT BTEW provided data is stored in the RAM and persi
5. m La I rd Firmware Release Notes BTM510 BTM511 TECHNOLOGIES gt Doc BTM510 511 v22 2 5 0 Issue No 026 Number Date 24 Feb 2015 Author Sebastian Schillack Firmware Release Notes BTM510 BTM511 Prepared by Sebastian Schillack Authorized by Andrew Dobbing 2015 Laird Technologies This document is issued by Laird Technologies Limited in confidence and is not to be reproduced in whole or in part without the prior written permission of Laird Technologies The information contained herein is the property of Laird Technologies and is to be used only for the purpose for which it is submitted and is not to be released in whole or in part without the prior written permission of Laird Technologies Embedded Wireless Solutions Support i f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 CHANGE HISTORY 001 002 003 004 005 006 007 008 009 010 011 012 013 014 015 016 017 018 019 020 021 022 023 024 025 026 v14 1 1 0 v14 1 1 1 v14 1 1 2 v14 1 2 0 v14 1 2 1 v18 1 2 2 v18 1 2 3 v18 1 2 4 v18 1 2 5 v18 1 3 0 v18 1 3 2 v18 1 3 3 v18 1 3 4 v18 1 3 5 v18 1 3 7 v18 1 3 8 v18 1 3 9 Updated BTM5 1x devkit references v18 1 3 10 Fixed table 16 2 LED blink pattern 2 was missing V18 1 4 0 V22 1 4 1 V22 1 4 2 V22 1 4 3 V22 1 4 4 V22 2 5 0 Embedded Wireless
6. but not streaming yet ATI26 returns SBC instead of the expected APTX However once audio streaming is started ATI26 returns the correct response which is APTX with extra information about the MusicManager version of the DSP image This is regarded as cosmetic issue Ref 3 20 When issuing AT SRx for Headset profile HSP with active audio channel SCO it was observed the role change doesn t work Ref 3 23 Workaround close the audio channel SCO first then the role change works Command to close the audio channel AT HSB from HS AT HSGR from HSG FIRMWARE VERSION 18 1 3 5 ENGINEERING F W Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages General Information This release contains an upgrade of all A2DP encoders and decoders to CSR s most recent ADK2 0 Encoders A2DP source role SBC APTX Decoders A2DP sink role SBC APTX AAC All decoders now support MusicManager a graphical tool for editing of A2DP post processing parameters e g EQs filters etc Interoperability issues which were observed with APTX should be fixed with this release Due to the upgrade to the latest APTx version a new APTx license key is required Please refer to the appropriate section below This release is engineering firmware and must be used for development purposes only New F
7. compared to 18I 230 33 New S Registers compared o1 t20 nennen nennen enn nen enne 33 Known Issues 33 Firmware Version 18 1 3 0 production firmware esses eene nennen nnne ns 34 Kelte uu uu uuu H 34 Resolved Issues compared to 18i23bi eren e nnn eere 34 Changed S Register Defaults eene enne nene eene enne enne enn nens 34 Limitations 34 Known Issues 34 Firmware Version 18 1 2 5 engineering firmware essent nnns 35 New Features compared ovi t 241 eene sehen nenne nenne nenne inns 35 Extended S Register ER New ATI Commandes 35 NEW ENMON COG EE 35 Messages Changed ette outage nta tg i elc Fe e a eta accent tete ud lame dudets 36 AAC Licensing 36 ele ter RE TE 36 Resolved Issues compared to 18I2341 enne nnne EA nennen eere enne 36 General Infortmatiori orate rimane pater Fd reta ie tette o EENS E e xDD Rn 36 Firmware Version 18 1 2 4 engineering firmware nne 36 New A F COMMANA EE 36 Resolved Issues compared to 18i 2321 36 General ntfommmation seh eeeeenr rss s s le e eere n nn 36 Firmware Version 18 1 2 3 Engineering Firmware 37 New Features compared to KAN WA DEE 37 EE 0e DEE 37 New ATL onmarids u uuu l u rrt E rne bec e i re Peer E be wein puis en reve ERES 37 peel EE 37 New Asynchronous Messages 37 CYC Ein Ce ce ERE 37 New Error COGS EE 37 Resolved Issues compared to 14i 2311 38 Resolved Issues c
8. only the 4 remaining GPIO lines are real GPIOs Ref 2 2 External audio codec sync in addition to the 12S signals SD IN SD OUT WS SCK external audio CODECS often require a high frequency synchronisation clock from one master clock source in the system This master clock would typically be the BTM51x and the clock frequency would be in the range of 12MHz or 24 MHz or similar BTM51x cannot provide this clock to an external 12S device BTM52x possibly can but confirmation an tests are still outstanding If this high frequency clock synchronisation is missing artefacts will be audible in periodic intervals In the use case of a wave file player recorder no codec the DS signals are sufficient and no HF synchronisation is required Ref 2 3 Auto connection at boot time AT BTR only applies to SPP Ref 2 4 1 4 324 is ignored SSP timeout is fixed to about 30 seconds probably error in CSR library Ref 2 5 1 3 When the link key for a device is existing locally AT BTT or AT BTW but the link key is missing in the remote device e g it was deleted there creating a connection AT SPD BdAddr will result in NO CARRIER rather than new pairing This issue is caused by the underlying Bluetooth stack and can only be resolved with a future update The first number of the firmware version 14 here indicates the Bluetooth stack version in use So in every firmware version beginning with 147 this issue will be present Ref 2 6 1 7
9. 4 values can be corrected by applying a shr 1 gt gt 1 Embedded Wireless Solutions Support 12 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x e Memory leak on AT HFGC1 Ref 4 60 It was identified that repeated calls of AT HFGC1 without additional parameters causing a memory leak Fixed now AT AVQPR nz start tag AVPL 0001 was missing Ref 4 61 When querying range of player application setting values the start tag was missing in the response Fixed in source code AT AVQPE unexpected AVPL ERROR 0007 ERROR 135 Ref 4 62 Observed when AT AVQPE query player app settings values text was issued without any extra parameter Fixed now AT AVSPQ AVFSL with unexpected start offset Ref 4 68 The unexpected start offset was caused by a parameter a of a precedent command AT AVQFS lt a gt lt b gt This has been fixed FMC HF GREEN BUTTON REDIAL PARAM 0x14 Ref 4 70 Values outside of range 0 3 are causing immediate re dial as if value 0 Has been fixed values outside range are ignored now MPS missing FS44100 message on stream resume after call hang up Ref 4 71 Observed in a particular MPS multi profile spec condition now fixed M Missing OK on AT HFGA while A2DP streaming with 355 1 or 3 Ref 4 57 Found by regression test now f
10. PRODUCTION FIRMWARE Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New Features compared to v14 1 1 2 2S digital stereo audio interface support GPIOs general purpose input output support Full APTX license for all modules from production not for field upgrade EIR extended inquiry response data improved maximum data length 160 Bytes Tested by regression tests All features of previous production and engineering firmware v14 1 1 0 v14 1 1 1 v14 1 1 2 New and Enhanced AT Commands AT BTL3 I2S cross loopback mode DS master sampling rate defined by S419 Embedded Wireless Solutions Support 39 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x AT BILA I2S cross loopback mode DS slave sampling rate defined by 419 New ATI Commands ATI28 query current audio sampling rate displayed for input and output ATI29 query maximum data length for EIR data ATI30 query current RAM buffer length EIR ATI31 query current baseband buffer length EIR ATIAT1 1 short press duration time in ms ATIA12 medium press duration absolute time in ms 411 S412 ATIA13 long press duration absolute time in ms 411 S412 S4
11. Setup When BTM51x connects to a remote TG device by AVRCP1 5 a number of information is exchanged between TG and CT in the background e g AVRCP features profile extensions beyond AVRCP1 0 and event capabilities These TG characteristics are buffered in BTM51x and can be queried using e g AT AVQRF AT AVQXT AT AVQEC These are mainly used for BTM51x internal purposes i e rejecting unsupported requests etc Subsequently to this exchange BTM51x attempts to register as many event capabilities as possible in order to receive relevant notifications from TG The outcome of this can be checked using AT AVQRE which returns flags set for all events that have been successfully registered Embedded Wireless Solutions Support 9 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x Typically the TG phone will register for notifications on local BTM51x volume change events In this case the volume change notification is sent each time the local output gain is changed by e g AT GOU AT GOD etc The phone is using this value to keep aware of current output gain setting and also to update its display AVRCP Operation Once AVRCP has successfully connected and registered for events typical notification messages will be forwarded to UART e g play status changed start pause now playing track changed player settings r
12. Support 44 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x AVRCP Company ID was incorrect in AVUR response to AT AVU this has been fixed Ref 0 4 AVRCP Operation ID previous channel 0x32 missing in documentation Operation IDs 0x32 0x37 wrong by one in documentation has been corrected in documentation and updated in firmware The previously wrong operation IDs have been shifted by one to be correct e g page down corresponds to 0x38 Ref 0 6 ATS690 has reported 215 215 This issue has been fixed Ref 0 7 AT GIU and AT GOU went up to 23 but maximum value is 22 This is fixed now Ref 0 8 Known Issues GPIOs not accessible by AT commands Ref 1 5 n some cases General Bonding automated pairing during connection setup with legacy devices BT2 0 or earlier does not work It did not work when tested against a BISM2 However the issue did not appear when tested against a BTM510 that was converted to BT2 0 or when tested against a BIM430 BT2 0 This implies that this issue is likely to be caused by the remote device Ref 1 1 Workaround use AT BTW lt BdAddr gt to initiate dedicated bonding prior to connection establishment with a legacy devices 324 is ignored SSP timeout is fixed to about 30 seconds probably error in CSR library Ref 1 3 When th
13. connected profiles ATI New codes for NO CARRIER reason ATI72 Query auto connect table list of ACRs ATI73 Query auto connect service ACS status New AT Commands for Auto Connect AT ACSn start stop auto connect service ACS AT ACS query status of auto connect service ACR Scratch Record Volatile Memory This section lists AT commands for manipulation of the ACR scratch record in volatile memory Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages AT AC query auto connect scratch record AT ACC clear auto connect scratch record AT ACA lt BdAddr gt set BdAddr AT ACl lt interval gt set reconnect attempt interval in seconds AT ACO lt option gt set option flags ACR Table in Persistent Store Embedded Wireless Solutions Support 28 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x This section lists AT commands for passing the ACR scratch record to persistent memory and vice versa Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages AT ACW write scratch record to
14. es eren sss s es e Piaya 22 New SREL ugedoe ER Resolved Issues22 Known Issues 23 Other Changes23 Firmware Version 18 1 3 10 Engineering EA 24 General INFOMATION vic RETE T 24 New AT COmitfalidSs uu u u u u a tet reta ek ei n seca Ee v mE bain RR le era rie edeber 24 New A pi rS 24 New Function Mapping Code Change 24 Other Features Functionallty iir ette pete i etta ee irte eai o rede ee rd ecectes iur pi vene pd ius 24 Resolved Issues 24 Other Changes24 AAC Licensing 25 Firmware Version 18 1 3 9 Engineering HA 25 G n ral Informatio EE 25 New AT COMMAN OS EE 25 Neu SREOITETS pe 26 New Function Mapping Codes MCL 26 New ATIs 26 S ESSA del Geo S ERR ER ERROR PREPARES 26 Other Features Functionallty ooi teneo stet eter det Feci dettes ENEE EES e ee eas 26 Resolved Ilssues26 Firmware Version 18 1 3 8 engineering fAw enne nennen nennen sinensis nnns nnns 26 General ntfommation hehe ee enrr ess n 26 New ATIs 27 New S REGISTORS m 27 Other Changes27 Resolved Issues27 Firmware Version 18 1 3 7 engineering fAW eene nennen n 27 General ntfommation n n nn 27 New Features compared Iovi i3bi nennen nenne ner nennen ern een enne 28 Other Features 28 New AT C Om El E 28 New AT Commands for Auto Connect nn n 28 ACR Scratch
15. for both ends can be checked with AT HFF NREC mask for HF 1 NREC mask for HFG 2 90 CVC boot time check failed occurs if S318 gt 0 at boot time and selected CVC image does not have a valid license key 91 HF ERROR was received from the HFG on a DTMF request AT HFMi on UART AT VTSzi on SLC Resolved Issues compared to 14 1 2 1 A2DP 48kHz issue when the module was configured as A2DP sink and the remote device sets up a DAC sampling frequency of 48kHz the module has rebooted This issue has occurred for example with the Broadcom Bluetooth stack and a couple of mobile phones It was a bug in the module s firmware and has been fixed Ref 2 31 S555z3 On expiration of the post reset time window see 554 the module reverts to not discoverable not connectable ATI27 0 instead of connectable only ATI27 2 This has been fixed Ref 2 27 PC DCD issue when connecting to a PC via SPP the DCD line was not asserted can be seen on e g Ezurio Terminal during the connection This has been fixed Ref 2 30 When a remote device enables Sniff Sub Rating the Bluetooth device address of that device was printed to the UART unexpectedly This has been fixed now Ref 2 29 Resolved Issues compared to 18 1 2 2 Incoming audio in a SCO link was blocked when a CVC image was selected This issue has been fixed Known Issues When initiating an SPP connection from a BTM5xx to a PC with Microsoft Blueto
16. re pair S373 default ACR option flags Other Changes S316 ignored for A2DP sink see Issues fixed Memory shortage below AT AVCnn command group enabled while AC service is running ACS parser limitation Resolved Issues Entering repeatedly AT BTEW was causing reboot A memory leak was discovered in the display function for this command When memory slots are exhausted the reboot occurred Should be fixed now Ref 3 9 2 20 bz 262 263 AT BTT trusted device list TDL inconsistent When re pairing a device which is already contained in the local TDL this pairing was not shown any longer First seen in 18 1 3 7 This issue should be fixed now Ref 3 27 bz 291 Encryption inconsistent Encryption was found to be inconsistent because it was not enforced for all profiles It was enforced for A2DP and AVRCP in previous versions and possibly for HFP but obviously not for the remaining profiles As of now for all profiles except DUN on entering a connection a request is sent to encrypt the link ATI51 and ATI52 allow to query the current encryption status for all connected profiles Ref 3 26 bz 290 Memory shortage when using external audio codec I2S 314 0 For each codec enabled SBC APTX AAC two memory slots were consumed by the possibility of setting supported sampling rates of the external DS device in the SEP capabilities using S316 As of now S316 is ignored for A2DP sinks and support fo
17. suppressed by S504 1 which unfortunately generally prevents any output on BTM51x UART silent mode Query Commands Set Commands Item Lists AVRCP1 5 Message Syntax Resolved Issues Module lock up for AT AVSBPn and AT AVSSPn Ref 4 64 If browsing is not supported on TG then these commands have caused a module lock up in the past Should be fixed now Duplicate SPP service record Ref 4 65 It was found that SPP had registered two service records Fixed by now Missing NO CARRIER with 507 2 SPP Ref 4 44 In a scenario where the remote device is sending data and immediately closing the link afterwards it was observed that NO CARRIER was missing at the UART due to data still being delivered in fast mode S507 2 which was blocking the NO CARRIER message Fixed now Data loss and module lock up with 507 lt 2 SPP Ref 4 45 In a scenario where the remote device is sending data and immediately closing the link afterwards it was observed that not all of the buffered data has been delivered at the time when NO CARRIER was sent to UART Remaining buffered data was delivered on a subsequent connection In addition a module lock up was observed in such scenario Fixed now 308 15 Auto BTX ALL ALL not working as expected Ref 4 49 For S308 15 ATI27 was still returning 3 connectable discoverable even after all enabled profiles were connected Fixed now AT amp F7 SSR parameters were not set as
18. was required to resume incoming stream This issue has been fixed Ref 3 21 285 Rfcomm not flushed on SPP disconnect The remaining content of Rfcomm buffer is printed on next connection and any new data transfer is blocked Rfcomm buffer need to be flushed on SPP disconnect The issue has been fixed Ref 3 25 289 Remote link key missing If the remote link key is missing but a local link key is available from a previous pairing a new pairing is initiated automatically on connection attempt now In previous versions the outcome of a connection attempt in this circumstance was a NO CARRIER message and ATI11 returning 6 connection has failed Provided the automatic pairing is successful the connection attempt should be successful as well Ref 3 3 261 Embedded Wireless Solutions Support 30 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x Other Features Functionality This section lists AT commands for passing the ACR scratch record to persistent memory and vice versa Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages Auto connect service ACS Known Issues When connecting to a Motorola Droid Razr phone XT910 with APTX enabled 530721
19. 13 New S Registers 309 Enable asynchronous FS message currently used sampling frequency S314 A2DP audio interface select S315 SCO audio interface select S316 external codec sampling frequency capabilities for A2DP 650 GPIO pin state mask 651 5658 GPIO configuration registers for details see below GPIO Configuration S669 GPIO input strong bias enable bitmask S670 read write pin states of all GPIOs in one step S411 short press duration in ms granularity 200ms 412 medium press duration in ms added to value of 411 granularity 500 ms 413 long press duration ms added to values of 411 S412 granularity 500 ms New Asynchronous Messages Current sampling frequency FSdddad interface whereby ddddd sampling frequency in Hz 4 or 5 digits interface INT internal codec DS M I2S master I2S S I2S slave FS message can be disabled by 309 or S504 New Error Codes 79 writing to modem control line is not permitted by GPIO S register 80 attempting to write the pin state of a GPIO that is configured as input 81 Maximum size of EIR data exceeded ATI29 General Information All Features described for this firmware version v14 1 2 0 have been tested by automated regression tests to a reasonable level A number of bugs have been found and were fixed before releasing this firmware Refer to the BTM51x User Guide and Hardware Integration Guides for detailed inf
20. 2 2923 0610 Release Notes BTM51x ERROR 134 AVRCP operation failed internal issue ERROR 135 AVRCP received avrcp status code not successful ERROR 136 AVRCP browsing not supported ERROR 137 AVRCP not connected ERROR 138 AVRCP parameter mismatch or out of range e g start offset gt end offset Changed S Registers 301 AVRCP role new range new default value 5302 AVRCP category new default value Other Changes New function mapping code FMC for input GPIO AT BTL2 removed Known Issues AT AQFS lt s gt lt e gt parser issue with end offset e When passing the optional end offset parameter e to this command then an error is returned which is likely to be a parser issue Workaround don t use the optional e parameter it will then default to s 49 which effectively returns 10 items at maximum beginning with start offset s AT AVVC calculation of output gain from absolute volume It has been observed that subsequent repeated incremental volume changes on the phone once in the sequence will produce the same output again This occurs somewhere in the middle of the range typically at 6 or 7 FIRMWARE VERSION 22 1 4 3 ENGINEERING F W February 2014 General Information This release contains a number of new features partly requested by customers and partly required to pass Bluetooth SIG qualification PTS testing as well as a few bug fixes New F
21. 8000 INT is sent prior to HSG B which is not correct From a the logical sequence point of view one would expect HSG B first and F 8000 INT thereafter However the content of these messages is correct Ref 3 11 HSG CVC enabled a redundant HSG AUT is being sent between HSG B and CVCID Ref 3 12 AVRCP direction indicator missing AVRCP does not display a direction indicator incoming or outgoing gt when a connection is established Compared to all other profiles this is inconsistent Ref 3 13 EIR when filling up the RAM buffer with gt 112 bytes of EIR data AT BTE and writing the buffer to the baseband AT BTE a module panic occurs reset The length of EIR data is limited to lt 112 bytes with this release Ref 3 14 FIRMWARE VERSION 18 1 2 5 ENGINEERING FIRMWARE Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New Features compared to v18 1 2 4 AAC codec support for A2DP sink PCM interface now supported Additional audio features for SBC encoder A2DP sink configurable with CSR s UFE Universal Parameter Manager via SPI interface Parametric equalizer 3D stereo enhancement Compander CVC support added for HSG HFG and SPP SCO was limited to HS and HF in 18 1 2 4 Extended S Registers S307 Ena
22. CM CONFIG32 amp 01b3 ALT PSKEY PCM FORMAT amp O15b6 In previous f w versions changing the original key using PsUpdate bat didn t have any effect for PSKEY PCM CONFIG32 or PSKEY PCM FORMAT because boot mode alternative keys do always override the original key Embedded Wireless Solutions Support 23 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x FIRMWARE VERSION 18 1 3 10 ENGINEERING F W This section lists AT commands for passing the ACR scratch record to persistent memory and vice versa Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages General Information This release contains a fix for AAC decoder implementation bug fixes for issues found by regression testing and a few new commands and registers etc Persistent store management is explained in a dedicated section This release is engineering firmware and must be used for development purposes only New AT Commands Management of persistent store AT NVQ lt size gt query available free space in current flash segment size optional AT NVF flood current flash segment to trigger defragmentation on next reset New S Registers S374 Automatic reset for host less operation New Func
23. Changes 16 Fixed Issues 16 Known Issues 16 Firmware Version 22 1 4 2 Engineering HA 16 General ntfommation nn na nn e sa rend sas s e a anas 16 New Features compared ov 21A1m enhn nenne ener ener ens 17 AT Command Interface 17 New AT el E le EE 17 RU Celtic R 17 Clianged S Reglsters sa aue ot perge ee usque edd iba iie e tuse festi iba aeri sie tester EPER 17 New ATIs 17 Changed ATIs 18 OUTER CAN GOS ks eeng ed eege ees Sege aere Seed 18 Application o RR 18 Fixed Issues 18 Other Changes 19 Known Issues 19 Embedded Wireless Solutions Support iii f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Firmware Version 22 1 4 1 Engineering HAM 19 GENIE EN et Ee EE 19 New Features compared ovi8IA0 nennen nnne nennen eene nenne nnns 19 AT Conrad Bleu Ce 20 New AT Cotnmatds ee Ee uD Sun u oai eaae 20 Changed AT Cotrrimarids erp EE ntis m iii 20 New SREDITE uu EESESa Een 20 Elle Ee EE 20 New ATIs 20 New Asynchronous Messages 20 Changed Asynchronous Messages 21 New GPIO Function Mapping Codes EMCH eere nenne nennen 21 New Codes for Status Indication D ZAD 4p1 eene nenne 21 Deieren Ne cL 21 Fixed Issues 21 Known Issues 21 Firmware Version 18 1 4 0 Production PAI 22 General ntfommation eene eere EEE esee eere n sss s s e
24. D745 18d 0x12 Voice recognition active priority for status voice recognition active is below status audio_on Application Notes This section lists functional descriptions of new features Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages Wide Band Speech HFP Transmitting custom commands over SLC ACL Inquiry exception Voice recognition activation SPP SCO with wide band speech WBS Change of gain range volume for BTM51x on board codec Pairing and link key type Other changes DUN dial up network profile disabled PAIR 1 vs PAIR 2 Single connection per HS HF and HSG HFG profile instance ATI52 deprecated encryption status of primary and secondary link Fixed Issues Command to make held call active The new behavior of AT HFGCA see section 0 allows you to make a held call active Ref 4 4 HS Service record issue Changed order of HS service record UUIDs 0x1108 now is placed on first 0x1131 on second position It was observed that legacy devices HSG were not connecting when seeing 0x1131 first This should be fixed now that 0x1108 appears at first position in the service class list HF indicators not suppressed in silent operation 550421 Some HF indicators were still being sent to the UART although silent operation was e
25. FG HS HSG was enabled along with SPP and an incoming SCO request occurred the message AUDIO ON SCO was printed to the UART but actually something like HF AU1 would be expected A subsequent status mismatch was caused too This issue has been fixed Ref 2 7 General Information This release is engineering firmware and must be used for development purposes only FIRMWARE VERSION 18 1 2 4 ENGINEERING FIRMWARE Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New AT Commands AT HFFN Resolved Issues compared to 18 1 2 3 PC DCD issue SPP this issue Ref 2 30 was only fixed if the connection was initiated from the PC side But if the connection was initiated from BTM51x the DCD line was not asserted on the PC s virtual COM port can be detected with EzurioTerminal exe This second issue has been fixed now as well Ref 2 34 A2DP reconnection issue after closing down an A2DP connection in an unclean way e g by switching off Bluetooth at the peer device during streaming the BTM51x made an automatic reset panic on entering the next A2DP connection This issue has been fixed now Ref 2 33 General Information This release is engineering firmware and must be used for development purposes only Embedded Wireless Solutions Support 36 f Laird Center http ews suppo
26. HFG e g mobile phone as well as a couple of bug fixes This release is engineering firmware and must be used for development only The new features of this release are not covered yet by automated regression tests There have been manual sanity checks but there might still be bugs and untested use cases left New AT Commands AT HFM x with lt x gt 0 9 A D Resolved Issues compared to 14 1 2 0 Secure Simple Pairing SSP leading zeroes were not displayed in the SSP passkey of the following asynchronous messages PAIR lt BdAddr gt friendlyname Passkey PASSKEY N lt BdAddr gt lt friendlyname gt lt Passkey gt Therefore it was possible that passkey contained less than 6 digits This has been fixed now Leading zeroes will be inserted so that a 6 digit passkey will be guaranteed in any case Ref 2 25 Serial Port Profile SPP On the hang up attempt of the 7th SPP connect disconnect cycles the module went through a reset automatically This could possibly lead to issues because this behaviour is probably not expected by the host controller However this issue has been fixed now Ref 2 21 Serial Port Profile SPP When issuing AT BTX disable discoverable and connectable in command and connected mode of SPP and subsequently issuing ATO ERROR 04 was returned which was preventing the return to data and connected mode SPP This issue has been fixed Ref 2 26 FIRMWARE VERSION 14 1 2 0
27. Record Volatile Memory ccccccccccccsccccsscecsseecceeessseecsseescseecsseeessseeccssesesescseeesseeeteeeees 28 ACR Table in Persistent Stl Enine eter eite ete e redii el ier ede sese net diia 28 Miu Ce u d me EET 29 eremi UIDI 29 New Error ele EE 29 New GPIO Function Mapping Codes EMC eere enne nnn nnns 30 Other Changes 30 Resolved Issues 30 Other Features Functionallty cact races aae etuer EEEE EEAS TL dr eet da 31 Embedded Wireless Solutions Support iv Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Known Issues 31 Firmware Version 18 1 3 5 engineering fAW U n 31 General ntfommation ehe heeenrn sess sese nn nn 31 New Features compared Iovi i 341 31 New ate uuu u u l L usu sand Nasduteseasanededatanicasdeinidlaliusesedbaniesdataneds 31 Extended ATLAS EE Ae Ze Put amd 31 New APTe license Key PS 32 Other Ghanges compared to e EE ER Known Issues 32 Firmware Version 18 1 3 4 Engineering HA 32 General ntormmation ana eana a aaar aeiaai iwa m qaya kau 32 New Features compared Iovi i 32 32 EE age Ee EE 32 New S REGISTONS A x 32 New and Extended ATI Commande 33 New ERROR Code 33 Other Features 33 Firmware Version 18 1 3 2 engineering firmware nnns nnns 33 General Informations coti torrens deed 33 Resolved Issues
28. Solutions Support Center http ews support lairdtech com www lairdtech com bluetooth Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack Sebastian Schillack 02 Feb 10 17 May 10 28 July 10 12 Jan 11 07 Mar 11 06 Jun 11 27 Jun 11 08 Jul 11 29 Jul 11 30 Sep 11 02 Apr 12 27 Apr 12 09 May 12 06 Sep 12 06 Nov 12 22 Nov 12 21 Dec 12 02 Jan 13 06 Feb 13 20 Feb 13 26 Feb 13 16 Aug 13 27 Dec 13 14 Feb 14 30 Apr 14 24 Feb 2015 Laird Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2923 0610 CONTENT Change History ii Conterit iii Firmware Version 22 2 5 0 production f w enne enne nnne nennen annis ne nre 7 General Informatio ecri EE 7 New Features compared to vi2lA41 nenne nennen enne enne anna E 7 AT GOMMANG Bu EE H New Changed AT Commande H New Changed S regtsters eene nene enr r nennen nnns ennt enne nen enn nnns 7 New Messages all AVRCP 1 5 icc
29. Support site on the BTM51x Product Pages General Information This release does not contain new features but 2 bug fixes of the production release 18 1 3 0 which are described below Firmware version number 18 1 3 1 was skipped for internal reasons This release is engineering firmware and must be used for development purposes only Resolved Issues compared to 18 1 3 0 AVRCP issue with Blackberry Bold 9700 There was an issue in ACRVP in v18 1 3 0 Although many devices and mobile phones worked well some did not for example the BB9700 The problem was that the BB9700 has either disconnected itself from AVRCP or not initiated an AVRCP link at all This is fixed now Ref 3 16 AVRCP direction indicator A direction indicator or for AVRCP was missing but is now present as well in the AVRCP CONNECT message Example CONNECT 0016A4000B64 110E incoming CONNECT 0016A4000B64 110E gt outgoing With the new S362 1 the AVRCP direction indicator can be suppressed just in case backward compatibility is preferred Otherwise S331 direction indicator style applies as well Ref 3 13 New S Registers compared to 18 1 3 0 S362 Suppress AVRCP direction indicator Known Issues All known issues listed for v18 1 3 0 in section 0 still exist except AVRCP direction indicator Ref 3 13 Embedded Wireless Solutions Support 33 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Eur
30. although A2DP and AVRCP are in the ACR of DUT and the peer device is connectable Workaround after releasing the HSP SCO audio A2DP and AVRCP were connecting automatically as expected The reason could be lack of memory but this has not be confirmed as root cause yet Ref 3 35 AT HFGCT number string type a possible memory leak was identified for this AT command if the optional arguments number string and type are passed A memory leak can be identified if repeated calls of a particular AT command is causing ATI1000 value number of available memory slots to decrease continuously The issue has not been reproduced yet Ref 3 32 LEDO T status indication phase difference During an automated test it was observed if LEDO and LED are configured identically S744 S745 on final disconnection of the test case SPP disconnect the point in time when the new blinking pattern is applied differs between LEDO and LED1 by about 1 2s causing a phase difference of the blinking pattern between LEDO and LED1 Ref 3 37 Quick new connection after disconnection unexpectedly failed connection attempts were observed if the new dial command was issued immediately after receiving NO CARRIER Workaround inserting a delay of at least 200ms before issuing the new dial command should solve the issue Ref 3 41 AT APD lt BdAddr gt responding one time unexpectedly with NO CARRIER under very particular circumstances S
31. ble optional A2DP codec S315 SCO audio interface select New ATI Commands ATI37 SPP SCO link type New Error Codes 92 AT BTAx not permitted occurs if one of HF HFG HS HSG and SPP is connected to one peer device Reason a SCO link is part of the HFP HSP specification Requesting SPP SCO AT BTAx would cause confusion in this scenario Embedded Wireless Solutions Support 39 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x Messages Changed s SPP SCO AT BTAx AAC Licensing This firmware contains AAC technology which incorporates intellectual property owned by numerous third parties Supply of this product does not convey a license under the relevant intellectual property of those third parties nor imply any right to use this product in any finished end user or ready to use final product An independent license for such use is required For details please visit http Awww vialicensing com Additional Features Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages SCO Audio Internal External Audio Interfaces SCO Input Output channel Resolved Issues compared to 18 1 2 4 HFP HSP SCO request when SPP enabled When one of HF H
32. chnologies Inc UK c 2013 AAC Licensing This firmware contains AAC technology which incorporates intellectual property owned by numerous third parties Supply of this product does not convey a license under the relevant intellectual property of those third parties nor imply any right to use this product in any finished end user or ready to use final product An independent license for such use is required For details please visit http www vialicensing com FIRMWARE VERSION 18 1 3 9 ENGINEERING F W This section lists AT commands for passing the ACR scratch record to persistent memory and vice versa Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages General Information This release contains a first implementation of status indication for LEDs Status indication complements the auto connect feature of previous release enabling host less operation of BTM5 1x for typical use cases In addition dynamic registers are introduced with this release This new type of register is designed to cope with future automation requirements A few bug fixes are contained as well This release is engineering firmware and must be used for development purposes only New AT Commands AT SILx y test LED blink pattern AT NVQ lt size gt internal debug command for persistent store size opti
33. d issued at the CT side It has not been clarified if this issue is caused by either TG or CT Ref 1 9 HFG AT HFGE ext err code an issue with extended error codes has been observed AT HFGE lt ext_err_code gt does not work as expected Workaround do not use extended error codes but simple error messages i e AT HFGE without parameter Ref 1 10 HFG ATH11F does not release SLC but returns ERROR 56 Workaround use AT HFGH instead Ref 1 11 HFG ATH displays NO CARRIER but does not release the SLC Workaround use AT HFGH instead Ref 1 12 HFG call records There are currently no AT command available for the following purposes Clear a waiting call Ref 1 16 Make a held call active Ref 1 17 Clear a held call Ref 1 18 Multiple profiles The usage of multiple profiles at the same time other than A2DP and AVRCP has not been tested and might cause issues Only the profile s which is are used shall be enabled If too many profiles are enabled the module can become instable and reboot due to lack of memory Ref 1 21 Multiple profiles A2DP SNK AVRCP CT HF this scenario would require additional AT commands and S registers which are not available with this firmware Embedded Wireless Solutions Support 45 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x
34. described in f w release notes Ref 4 51 Fixed in source code Unexpected ERROR 129 on AT HSGGI Ref 4 50 Fixed in source code Missing option to stop a playing ringtone Ref 4 52 On call answer reject terminate a playing ringtone was not stopped This has been fixed Now also on AT SIT lt n gt a playing tone is cancelled before the new one is played back Prior to the fix ringtones were queued on AT SIT lt n gt Module lock up on AT BTB lt 6digit passkey gt when triggered by AT SPD Ref 4 53 Fixed in source code A2DP stream not started while SCO active and when 355 3 Ref 4 55 Fixed in source code Was a follow up issue of library upgrade to BL6 3 Number of items not captured on AT AVSP lt n gt response Ref 4 66 The number of items in AT AVSP set browsed player response was not captured internally causing an unexpected value for nTotalltems in a subsequent AT AVQFS response list start tag AVFSL Fixed now See also known issue Ref 4 67 below Missing ERROR 078 on AT HFA while A2dp streaming and 355 0 2 Ref 4 56 Found by regression testing response was HF AU2 and HFG AU2 remote end should not indicate anything Now fixed Unexpected whitespace after AVSV OK Ref 4 58 Fixed AVRCP1 5 event capabilities wrong flags on AT AVGRE AVQEC Ref 4 59 On transformation from EventID to bitmask a 1 was missing in the shift command Fixed now For previous f w version 22 1 4
35. e BT2 1 EDR specification Suggestion is to ignore ATI51 until further notice Ref 4 27 NO CARRIER profile uuid inconsistent if connection rejected by remote device For all profiles the profile uuid is appended except for HSG and HFG Ref 4 28 HFP1 6 specification missing feature to reject audio request from HF If a HFG doesn t have audio resource available e g busy with an SPP SCO link to another device and a HF SLC connected requests audio AT HFA then the codec negotiation takes place as defined in HFP1 6 spec but the HFG doesn t initiate the actual SCO link due to unavailable audio resource On the HF side the expected HF AU2 is missing and subsequent procedures may fail due to wrong internal audio state still waiting for SCO from HFG Ref 4 29 FIRMWARE VERSION 18 1 4 0 PRODUCTION F W This section lists AT commands for passing the ACR scratch record to persistent memory and vice versa Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages General Information This release does not contain new features The majority of existing features as well as fixed issues have passed automated regression tests successfully Some issues were discovered and fixed Known issues exist as well Fixed and known issues are described below This firmware is qualified for product
36. e link key for a device is existing locally AT BTT or AT BTW but the link key is missing in the remote device e g it was deleted there creating a connection AT SPD lt BdAddr gt will result in NO CARRIER rather than new pairing This issue is caused by the underlying Bluetooth stack and can only be resolved with a future update The first number of the firmware version 14 here indicates the Bluetooth stack version in use So in every firmware version beginning with 14 this issue will be present Ref1 7 Workaround a recommended use AT BTW lt BdAddr gt to initiate new pairing to generate new link keys on both devices Workaround b the link key for the remote device can be deleted from the trusted device list AT BTD lt BdAddr gt or from cache AT BTDW A new connection attempt AT SPD lt BdAddr gt should initiate new pairing automatically However this might not work with some legacy BT2 0 and earlier devices Hence workaround a is recommended All profiles It has been observed that after profile disconnection NO CARRIER a delay of at least 200ms is required before the module can initiate a connection again successfully Ref 1 8 AVRCP It has been observed that on a link between two BTM510 511 one end configured as target TG the other end configured as control CT a value of Bad profile in 311 AVRCP response type at the target side is causing a timeout response AVPTC 4 Opld 0 to AT AVC Opl
37. ease is engineering firmware and must be used for development purposes only New Features compared to v18 1 3 2 AT commands for SBC and AAC decoder post processing algorithms New AT Commands AT APMx set A2DP decoder post processing mode with x 0 5 AT APM query current A2DP decoder post processing mode New S Registers 363 set decoder post processing default mode 1 3 Embedded Wireless Solutions Support 32 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x New and Extended ATI Commands ATI38 List all A2DP sink decoders with post processing support ATI26 This command has been extended to display Sysld BuildNo and DecoderFriendlyName when in A2DP streaming mode New ERROR Codes 93 A2DP is not in streaming state or not in A2DP sink role decoder 94 command not supported by current decoder plugin Other Features Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages A2DP decoder post processing modes SBC or AAC FIRMWARE VERSION 18 1 3 2 ENGINEERING FIRMWARE Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions
38. eatures compared to v18 1 3 4 MusicManager supported by all A2DP decoders CSR ADK2 0 Initiating A2DP from BTM51x is now possible with optional codecs enabled S307 gt 0 Priority list of optional codecs when initiating A2DP 2S sampling rate offset S367 experimental New S Registers S367 I2S5 sampling rate offset 0 2047 default 0 Extended ATI Commands ATI26 print current A2DP decoder info ATI38 list available A2DP decoders Embedded Wireless Solutions Support 31 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x New APTx License Key Due to the upgrade of APTX version a new APTX license key is required This will affect all BTM51x development kits with current firmware version of 18 1 3 4 and earlier Issue audio signal will mute for the APTX decoder once the firmware has been upgraded to 18 1 3 5 Solution please provide the Bluetooth device address es of your BTM51x development kit s to Laird Technologies ATI4 We will subsequently send you instructions of how to install the new license key Other Changes compared to 18 1 3 4 The link policy power table for SPP sniff mode is now limited to one row with passive mode If sniff parameters enabled affecting SPP only then the mode is sniff and parameters are set as per S registers This should prevent h
39. eatures compared to v22 1 4 2 Remote volume control for HFP and HSP Ringtones status indication tones MPS multi profile specification compatibility layer Tolerant pairing policy Android compatibility AT Command Interface This section lists the changes in the AT command interface with this firmware release Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New AT Commands AT HFGG Command family query set increment decrement remote gain of HF AT HSGG Command family query set increment decrement remote gain of HS AT SIT n Play a pre defined tone AT GO lt n gt AT Gl lt n gt Set absolute value of local I O analogue gain AT APB x Block reject any incoming A2DP connection needed for PTS testing Embedded Wireless Solutions Support 15 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x AT AVB x Block reject any incoming AVRCP connection was needed for PTS testing New S Registers S382 Enable tolerant pairing policy Android compatibility S386 Enable MPS multi profile specification compatibility layer S387 Tone volume analogue output only S388 Ring tone select Cha
40. ected as described above pt 2 finally pt 3 For each packet received a separate AVNPA lt pt gt message is sent to UART This feature has only been tested against PTS profile tuning suite but not against a test TG due to lack of support on the latter not having a long enough track name Ref 4 46 AVRCP1 5 AT Command Reference Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages Whenever information appears insufficient look up AVRCP1 5 specification document for clarification and more background information Embedded Wireless Solutions Support 11 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x 390 AVRCP1 5 configuration The flags of S register 390 have been designed so that cleared flags correspond to machine friendly automated and complete configuration whereas set flags except bits 4 5 7 correspond to a more human friendly configuration S397 AVRCP1 5 notification control S register 397 allows to disable certain AVRCP1 5 notifications It was found during testing that disabling certain notifications can help to simplify requirements for the host controller s parser algorithm Messages that are currently not covered by S397 can only be
41. enty of new command and messages They have been tested manually but are not covered by automated regression tests yet Given that AVRCP1 5 contains a high level of complexity it can happen that bugs or missing features become obvious when testing against different TG devices e g phones Please get in touch with Laird and help to improve the f w with your feedback New Features compared to v22 1 4 3 AVRCP1 5 for controller role CT including Absolute volume control Now playing track attributes Current play list Folder browsing e UBER AT Command Interface This section lists the changes in the AT command interface with this firmware release Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New S Registers 389 Input function mapping codes FMC parameter 5390 AVRCP 1 5 configuration 391 Enable UID cache New ATIs ATI80 AVRCP 1 5 diagnostics ATI350 Detailed list of available CVC images duplicate of ATI318 New ERROR Codes ERROR 131 AVRCP reserved ERROR 132 AVRCP reserved ERROR 133 AVRCP requested action or feature not supported by remote device Embedded Wireless Solutions Support 14 Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 85
42. epeat shuffle etc changed available players and so forth For a number of notifications BTM51x subsequently and automatically queries more data related to the new status i e now playing track attributes Title Artist Album etc and prints it to UART It has been observed that in some circumstances multiple events occurring virtually at the same time will cause multiple lists of e g now playing track attributes If this is interfering a host controller 390 also allows to prevent automatic queries for a number of notifications see 390 bits 4 5 7 Queries for now playing track attributes can also be carried out by AT command at any time AT AVQNP UID Cache In the virtual file system folders and media element items track are uniquely identified by a 64bit UID unique identifier This UID is always contained in relevant UART messages list items Given that handling 64bit values may be inconvenient for resource constrained host microcontrollers or for a human beings during evaluation BTM51x can cache up to 10 UIDs of an item list in an internal array For a subsequent command a listed item can then be referred by its UidCachelndex which is between 0 and 9 rather than the UID which is 16 characters long UID cache feature is enabled by default and can be disabled by setting S391 0 The quick start example above also covers this feature Browsing Browsing feature allows a CT device to navigate view and launch media c
43. equence to reproduce ATS372 1 inhibit auto re pair SPP connect attempt unsuccessful remote link key missing ATS372 0 allow auto re pair now a subsequent AT APD attempt fails NO CARRIER But any subsequent AT APD lt BdAddr gt should work as expected new pairing involved Changing 372 is probably not be a realistic use case so this issue has been assigned very low severity Ref 3 34 ATI51 52 encryption status There has been some confusion regarding encryption API functions in the underlying library According to CSR newsgroups all connections except SDP service discovery profile to a peer device of BT version 2 1 should be encrypted automatically with factory default S register settings security level 332022 This also means that ATI51 52 response is only valid for peer devices which are BT2 0 or earlier In addition it was observed that ATI51 52 may not always be correct for SPP So if the peer device is BT version 2 1 or later ATI51 52 can be ignored because any connection will be encrypted except SDP For BT2 0 peer devices and earlier BTM51x with factory default S Registers will actively enforce encryption for all profiles If not wished this default behaviour can be disabled by 375 for incoming outgoing either direction Other Changes The following alternative PS Keys were removed from boot mode 1 AT mode in order to allow PsUpdate bat to work with PSKEY PCM CONFIG32 and PSKEY PCM FORMAT ALT PSKEY P
44. etting attribute value pair AVSBP Set browsed player confirmation AVSPC Addressed selected player changed notification AVSS System status of remote TG changed notification AVSSP Set addressed selected player confirmation AVTC Track changed notification Embedded Wireless Solutions Support 8 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x AVTE Track reached end notification AVTS Track reached start notification AVUC UIDs changed notification AVVC Absolute volume changed indication AVRCP1 5 Application Notes AVRCP1 5 in contrast to previously supported AVRCP1 0 introduces a number of advanced features for control of a remote audio player such as Browsing the virtual file system on the TG media player change path select a media element item i e a track for play back Query various information from the TG data base media player e g track details attribute list list folder content Control of player application settings shuffle repeat etc Registration for reception of event notifications Absolute volume control Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages Whenever information appears insufficient loo
45. flag contained in the ACR table is not set in 102 109 command not allowed when AC service is running Stop service to enable full parser 110 ACS precondition failed module is discoverable and or connectable 111 ACS precondition failed inquiry in progress 112 ACS precondition failed pairing in progress 113 ACS precondition failed legacy SPP auto connect AT BTR is enabled Embedded Wireless Solutions Support 29 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x New GPIO Function Mapping Codes FMC This section lists AT commands for passing the ACR scratch record to persistent memory and vice versa Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages Pairing Button YES OxOE equivalent to command AT BTBY Pairing Button NO OxOF equivalent to command AT BTBN Cancel Inquiry 0x10 an equivalent AT command does not exist Make discoverable connectable 0x11 equivalent to command AT BTP Other Changes ATI11 reason for NO CARRIER message is now updated for the reasons link loss 41 and remote link key missing 44 In the latter case a new pairing is initiated automatically in order to make the connect
46. flash memory limitations Known Issues Garbling scrambling like sound artefacts for CVC plugins in WBS mode Ref 4 33 This issue is observed whenever the SPI connection between BTM51x and PC is inactive i e UFE or PsTool is not logically connected like in the final productive application The noise originates from the send path see UFE Workaround For HS1M S318 1 and HS2M 5318 2 this issue can be worked around by disabling the AEC acoustic echo cancellation block in UFE For HF 531823 such a workaround could not be found Only disabling wideband speech WBS ATS376 0 AT HF G WO would help here Instabilities with ACR ACS Ref 4 36 During regression testing a couple of instabilities related to auto connect record ACR and auto connect service ACS were observed in particular scenarios These will be investigated in detail prior to next production release FIRMWARE VERSION 22 1 4 1 ENGINEERING F W August 2013 This section lists AT commands for passing the ACR scratch record to persistent memory and vice versa Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages General Information This release is based on CSR bluestack unified 26g and CSR libraries originated from ADK2 5 Bluelab 6 3 Due to the number of fundamental changes in bluestack API and CSR libraries thi
47. g was 0 before Limitations The maximum length for extended inquiry data is 112 Bytes The Bluetooth specification allows up to 240 Bytes but this cannot be achieved on BTM510 511 due to internal memory limitations Ref 3 1 External audio codec I2S master clock in addition to the 12S signals SD IN SD OUT WS SCK external audio CODECS often require a high frequency synchronisation clock from one master clock source in the system This master clock would typically be created by the BTM51x and the clock frequency would be 12MHz or 24MHz BTM51x has no means of providing this master clock to an external DS device If a 12MHz or 24MHz master clock is required then BTM52x should be used instead of BTM51x If master clock synchronisation is missing then artefacts will be audible in periodic intervals In the use case of a wave file player recorder no codec the I25 signals are sufficient and no master clock synchronisation is required Ref 3 2 Known Issues A connection attempt of any profile fails NO CARRIER if the peer s device BD address is stored in the local list of trusted devices AT BTT or AT BTW but for any reason the local device s BD address is not stored in the peer s device trusted device list any longer link key missing Ref 3 3 Workaround a recommended use AT BTW lt BdAddr gt to initiate new pairing to generate new link keys on both ends Workaround b the link key for the remote device can be de
48. igh power consumption for one second when jumping to the first row of the table which used to be active mode previously Ref 3 18 Known Issues AAC with short drop outs when initiated from BTM51x If initiating an A2DP link from BTM51x A2DP sink S307 2 or 3 and the agreed codec is AAC e g to an iPhone then short dropouts were observed in the analogue audio signal Ref 3 17 280 Maximum recommended output gain 12 to prevent distortion During testing of A2DP decoders SBC AAC APTX against various source devices with a OdB sine wave of 100Hz and 1000Hz in some cases distortion occurred with the default output gain of 15 AT GO This distortion can be prevented by lowering the output gain AT GOD Although there were slight differences an output gain of 12 allowed to eliminate the distortion in all of the tested combinations Ref 3 16 282 FIRMWARE VERSION 18 1 3 4 ENGINEERING F W Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages General Information This release contains an updated AAC decoder which fixes a bug when playing a 1kHz sine wave at OdB full scale In addition commands were added to cater for Sysld BuildNo query of post processing algorithms MusicManager and mode set query for AAC and SBC decoder v18 1 3 3 is skipped for internal reasons This rel
49. ion New S Registers 375 inhibit active enforcement of encryption for remote devices BT2 0 or earlier Resolved Issues In comparison to v18 1 3 10 the following issues were fixed 5372 prevent auto re pair only working once It was observed that preventing automatic re pair if local link key exists but remote link key missing only worked for the first connection attempt because the local link key was deleted in this case So a subsequent connection has re initiated pairing although 372 1 This issue should be fixed now Any connection attempt should fail if a link key exists locally but not remotely The local link key will not be deleted Ref 3 39 Function mapping code Audio On 0x05 output was not working for HF audio This issue should be fixed now Ref 3 40 Embedded Wireless Solutions Support 22 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x Known Issues ATI11 responses 41 44 not working as expected for SPP It was observed that ATI11 NO CARRIER reason codes 41 link loss and 44 remote link key missing do not work as expected for serial port profile SPP Ref 3 33 AutoConnect not successful for A2DP and AVRCP after link loss while HSP connection with active audio SCO exists to another device It was observed that in this scenario no reconnection has occured
50. ion attempt successful Hence remote link key missing should be seen rarely on ATI11 See also fixed issues below If a connection attempt of the local BTM51x is actively rejected by a remote device ATI11 returning 4 the profile UUID is now appended to the resulting NO CARRIER message e g NO CARRIER 1101 The appended profile UUID can be suppressed by ATS329 1 Resolved Issues AAC with short drop outs when initiated from BTM51x It was observed that the issue is fixed by the following command sequence S368 180 request HCI slave for all AVRCP and A2DP connections AT amp W store S registers in non volatile memory With this setting on each connection of either AVRCP or A2DP the module issues a request to become slave This fix was tested with an iPhone The AAC audio signal did not contain short gaps when the iPhone is the master of the link Alternatively to 368 the manual commands AT SRS 80 or AT SRS 100 solve the issue as well In connection with an iPhone A2DP AVRCP it was observed that changing the role for one profile e g A2DP 80 changes the role of the other connected profile e g AVRCP 100 as well Ref 3 17 280 Unexpected disconnect in SPP command and connected mode when de asserting DSR This issue has been fixed and should not occur any longer Ref 3 22 286 Incoming SPP stream is stopping after about 895 characters received Typing one character on the local terminal application
51. ixed Unexpected HFG status ATI66 after AT HFGCH operations Ref 4 73 When SLC connected after terminating calls using AT HFGCH ATI66 returned 3 InCallSlc although no more call record was existing at HFG rather than the expected 1 SIcConnected fixed now Known Issues Total number of items for AT AVQFS Ref 4 67 Note If AT AVQFS query file system is issued first time without precedent AT AVQAP AT AVSBP then no information about total number of items is available for the file system list AVFSL If this information is regarded as important then an extra AT AVSBP is recommended initially Theoretic possibility of internal UART Tx buffer overrun Ref 4 69 It has been identified that in theory there is certain very low risk of UART Tx data being lost due to buffer overrun This could cause e g parts of AVRCP1 5 lists missing including list terminators Although it is regarded to be very unlikely a detector was implemented to count such conditions if they should occur Whenever there is a suspicion that this could have happened ATI1009 ComTxBufFailCnt will confirm so if the value returned is gt O MPS unexpected order of messages FS44100 APSTR vs HF AUO Ref 4 63 In an MPS multi profile specification scenario it was observed that under certain conditions after finishing a call closing the SCO channel and on automatic A2DP stream resumption the message HF AUO SCO clo
52. k up AVRCP1 5 specification document for clarification and more background information AVRCP1 5 Initialisation Role Configuration At boot time AVRCP functionality is initialised according to S Registers S301 AVRCP role In order to enable functionality of AVRCP1 5 301 must be set to 3 new default value which corresponds to role target and controller The only target functionality required here is to receive volume change commands from the remote device phone When volume is changed at the phone then the relevant message causes BTM51x s audio output gain to be set accordingly provided an A2DP link exists with the same device and BTM51x is audio sink This is the only scenario where the phone acts as CT and BTM51x is acting as TG Given that in all other scenarios BTM51x is acting as CT and a phone is acting as TG the volume case is neglected when stating that only AVRCP1 5 CT role is supported In addition for the volume case to be functional BTM51x TG features are set to category 2 internally which is hardcoded It has been observed during development that 302 must be set to 1 category 1 If 5301 3 target and controller then 302 value stands for CT functionality If S302 has a different value while 530123 then features may not work as described or not work at all Category 1 is the use case which was focused on for this release The new default values for 301 23 and S302 21 reflect these findings AVRCP Connection
53. leted from the trusted device list AT BTD lt BdAddr gt or from cache AT BTDW A new connection attempt e g AT SPD lt BdAddr gt should initiate new pairing automatically HE ATH111E and ATH for HF do not respond with OK but with NO CARRIER only Ref 3 5 HFG call records There are currently no AT command available for the following purposes Clear a waiting call Ref 3 6 Make a held call active Ref 3 7 Embedded Wireless Solutions Support 34 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x HFG AT HFGE ext err code an issue with extended error codes has been observed AT HFGE lt ext_err_code gt does not work as expected Workaround do not use extended error codes but simple error messages i e AT HFGE without parameter Ref 3 8 EIR after repeatedly issuing AT BTE or AT BTEW provided data is stored in the RAM and persistent buffer the commands stop working or only display a part of the buffered data It has been observed that this issue occurs after in the regression tests after the 42 repetition of the test sequence Ref 3 9 HF order of HF AUO 1 messages it has been observed that the position of HF AUO or HF AUT can vary within the asynchronous message sequence during a call or a call setup Ref 3 10 HSG the asynchronous message FS
54. ll In this case the SCO link will remain but no audio can be heard due to failed security check Make sure that a valid CVC license key exists and S318 contains the correct setting CVC Limitations Only the BCO5 on board codec is supported External audio interfaces like PCM I2S are not supported with this release CVC only applies to SCO connections of the HF or HS instance CVC does not apply to the audio gateway role of neither HFP HFG nor HSP HSG A license key is required for the CVC images For development purposes CSR provide free trial license keys This firmware provides all necessary means in order to allow CVC trial development and license key management in conjunction with CSR tools The application note CVC on BTM5xx describes the necessary details New Error Codes 82 No CVC license key stored or more than 5 words invalid length ATI32 Embedded Wireless Solutions Support 37 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x 83 CVC security failed on loading CVC image for a SCO connection 84 85 86 87 F W internal CVC error codes should not occur with released firmware 88 CVC SYSID request timeout can occur on ATI35 if UART baud rate is too low 89 HF request to disable NREC in HFG failed because NREC feature is not supported by both ends Support
55. m HF Ref 4 29 This issue as described in v22 1 4 1 known issues should be fixed now Support for digital audio interfaces PCM and I2S Ref 4 29 PCM and DS are supported again Ranges of 314 and 315 adjusted as follows S314 A2DP audio interface select 0 2 onboard 12S_M 12S_S 315 SCO audio interface select 0 4 onboard I2 M 1I2S S PCM M PCM S AT SPD causing PAIR 2 if local link key not available Ref 4 32 The connection attempt was not successful in this scenario This issue has been fixed a new pairing process will be initiated in this case Trusted device list with two entries AT BTT Ref 4 33 If in this scenario the second entry was deleted using AT BTD lt BdAdadr gt then the first entry also disappeared unexpectedly This bug has been fixed AT HFD with existing locally initiated SPP link causing parser lock up Ref 4 35 In this scenario the module did not respond any longer May apply to other profile s Dial command as well Was caused by an internal state machine bug and should be fixed now Embedded Wireless Solutions Support 18 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x Other Changes S318range 0 4 X2M removed The option to select X2M 2 microphone example for NB 8kHz and WB 16kHz by 5318 5 has been removed due to
56. mmand interface with this firmware release Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New AT Commands AT amp F7 AT amp F8 pre defined sniff SSR parameters for HFP HSP and SPP AT BTL7 AT BTL8 PCM cross loopback New S Registers 348 SSR maximum remote interval 5349 SSR minimum remote timeout 350 SSR minimum local timeout S364 Delayed sniff mode experimental S365 Initial power mode after entering a connection S384 12S format configuration corresponds to PSKEY DIGITAL AUDIO CONFIG amp 01D9 385 Append channel info to unsolicited FS INT message Changed S Registers 5308 Auto BTX extended by multi profile policy S314 A2DP audio interface select re enabled S315 e SCO audio interface select re enabled S318 SCO DSP image select disabled X2M 5 419 Loopback sampling rate fixed sampling rate New ATIs ATI44 Current power mode active sniff passive and sniff interval of SPP HSP HFP ATI45 Current sniff sub rating SSR parameters of SPP HSP HFP link in slots ATI46 Current link policy power table ATI144 Power mode and sniff interval in ms ATI145 Like ATI45 but all values in milliseconds instead of slots ATI146 Like ATI46 but all values in milliseconds ins
57. nabled S504 1 This has been fixed Known Issues PCM and 12S interface are not yet supported S314 315 Support for external PCM and 12S interface has not been integrated yet with the new underlying firmware due to significant changes in the API Embedded Wireless Solutions Support 21 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x and architecture Therefore 314 and S315 are currently limited to a value of 0 meaning that only the on board codec ADC DAC is supported Ref 4 30 CVC support is incomplete AT commands and module functions related to CVC support were not fully tested and may not function properly e g ATI35 This is due to some non trivial changes in the CVC structure which were assigned a lower priority to be rectified ATI51 encryption status per connected profile not working reliably Wrong indications flag cleared when expected to be set were observed for ATI51 during testing especially on repeated connections Although a connected profile connection is encrypted it is not being indicated as such in the ATI51 profile mask This is caused by the underlying stack returning out dated parameter values of earlier connections However it has been manually verified that the bluestack confirms encryption of every new ACL to other BT2 1 devices as it is mandated in th
58. nce connected 5397 New register AVRCP1 5 notification control New Messages all AVRCP1 5 The following messages were added mainly in order to meet AVRCP1 5 PTS testing requirements Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages AVBS Battery status of remote TG changed notification AVSS System status of remote TG changed notification AVPPC Playback position changed notification AVTE Track reached end notification AVTS Track reached start notification AVAPC Available players changed notification Embedded Wireless Solutions Support 7 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x AVUC UID counter UIDs changed at TG notification New ATIs ATI1008 Diagnostics fTempEnabled fAcsEnabled ATI1009 Diagnostics ComTxBufFailCnt AVRCP1 5 This section contains updated documentation about AVRCP1 5 on BTM51x Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages AVRCP1 5 AT Command Overview AT AVQ Command family query AVRCP related data parameters items a
59. nged S Registers S581 HF supported features new default value Application Notes This section lists functional description of new features Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages Remote volume control HFP HSP Ring Tones MPS compatibility layer Tolerant pairing policy Android compatibility Other Changes e VGS VGM indications for HS HSG HF HFG Now always printing two digits padding with a leading O if value lt 9 Fixed Issues HF notification when HFG changes its in band ring settings HF BSIR 0 1 Ref 4 37 This notification was not suppressed when 504 1 silent operation enabled but now it is If an SLC exists then the current HFG s in band ring setting can be queried from HF using AT HFF Then apply the mask of 0x08 to the HFG supported features second part of response Command AT GIR Ref 4 38 When restoring current input gain from S Register instead of expected input gain 590 the output gain S589 was referenced This has been fixed HSG a connection attempt to another HSG was not rejected but successful Ref 4 39 This has been fixed If the remote device is a HSG then AT HSGD BdAddr will now respond with NO CARRIER as expected HSG module reset on incoming connection from another HSG Ref 4 40 Thi
60. nwards and query AT AVSP lt n gt AT AVQFS AT AVSPUQ set path upwards one level and query AT AVSPU AT AVQFS AT AVSPRQ set path upwards to root and query AT AVSPR AT AVQFS Arguments lt n gt UidCachelndex or UID Table 0 2 BTM5 1x combined navigation AT commands AVRCP Sniff Mode Delay It has been observed that responses to AVRCP requests AT commands are delayed in the range of about 0 5s 1s This is likely to be caused by sniff mode AVRCP1 5 Continuation This feature caters for the case that e g media element attributes may not fit into a single packet due to large size e g a very very long track name or similar This is why AVRCP1 5 spec has defined four different packet types Single 0 Start 1 Continue 2 End 3 If all attribute data fits into a single packet then packet type will be Single 0 If attribute data is spread over more than one packet then the first packet type will be Start 1 followed by zero or more packets of type Continue 2 followed by a terminating packet of type End 3 On BTM51x this becomes relevant for representation of now playing track attributes AVNPA message In order to cater for this feature the current packet type is appended immediately to AVNPA lt n gt as a single decimal character 0 3 In by far most cases this will be 0 However if the packet type is 1 then more AVNPA pt messages must be exp
61. of an item list without having to manage start offsets for each window by host controller The following Table 0 1 gives an overview of AT commands for navigating the virtual file system More detail about each command can be found in Error Reference source not found and Error Reference source not found AT AVOQFS lt s gt lt e gt List folder items current path AT AVSP lt n gt set path downwards AT AVSPU set path upwards one level Embedded Wireless Solutions Support 10 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x AT AVSPI lt n gt play item selected by browsing AT AVQMI lt n gt query media item attributes Arguments n UidCachelndex or UID s start offset optional set to 0 if not passed e end offset optional set to lt s gt 9 if not passed Table 0 1 Standard navigation AT commands Beyond standard operations like list folder items set path up down etc defined in AVRCP1 5 specification BTM51x provides a set of combined commands which facilitate more convenient navigation See Table 0 2 below AT AVQFSN List folder items next window AT AVQFS lt s gt with start offset s managed by BTM51x AT AVSPR set path upwards to root Multiple calls of AT AVSPU until root folder is reached AT AVSPQ lt n gt set path dow
62. ompared to 18i2321 eer enne asnan nennen nennen 38 Known Issues 38 General ntfommation na nn nn 38 Firmware Version 18 1 2 2 Engineering Firmware 38 Firmware Version 14 1 2 1 Engineering Firmware 39 General Information a a 39 New AT COmIRBa Gsyu u u u L aS TM 39 Resolved Issues compared to 1420 39 Firmware Version 14 1 2 0 production firmware ns 39 New Features compared to v 4 1 1 2 uuu aceactdeddstabdnaielananbnstinbawen ladda boxed dua XX ap ERR asa kayak akaqa 39 Embedded Wireless Solutions Support v Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 New and Enhanced AT Commandes 39 N w ae el leen EE A0 New S REOINETS ugereegt deed tege dared ha tinge Edge eege ee eg ege eegend ege 40 Eelsten 40 New Error el EEN 40 General ntfommation nn eere ren sess una 40 Resolved Issues compared to 14 1 2 nennen enne ee nnne nennen eene nns 40 Known Issues 41 Firmware Version 14 1 1 2 engineering firmware nee 42 New Features compared ovi4i1 1t nennen ener nennen eee nenne een 42 New ATI Commandes 42 MIC s m eTt 42 Other Changes42 General ntormmation enhn n nn eser a ren asses ese anas 42 Resolved Issued compared to EN EN A E 42 Firmware Versi
63. on no new features were added A number of issues and bugs were identified during regression testing and were fixed In addition a few minor changes were made related to fine tuning of functionality and default behaviour e g factory default values of selected S Registers etc AT Command Interface This section lists the changes in the AT command interface with this firmware release Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New Changed AT Commands The following AT commands were added mainly in order to meet AVRCP1 5 PTS testing requirements AT AVQPP Query TG play status of addressed selected player AT AVQPV Query TG player application setting values for all attributes AT AVQPT Query TG player application settings attribute text AT AVQPR Query TG player application settings attribute range AT AVQPE Query TG player application setting attribute value s text AT AVSAI Add item to now playing list AT SIT Changed if another ring tone is already playing then it will be stopped before the new one is being played back In previous f w version tone requests by AT SIT were queued New Changed S registers 390 AVRCP 1 5 configuration changed bit7 added bit1 and bit6 ignored 396 New register un register SPP service record o
64. on 14 1 1 1 engineering firmware cccccccecesssecssssecsseeecseescsaeesseeeceseeecsaeeesaeessaseesees 42 New Features compared oviAi110 nennen enne nenne ener ener nens 42 NOW AT COMMANA EE 42 ascetur 43 New Unsolicited Messages ist pede bee geet den DE let R cies suet IQ EE EES 43 New ATIs 43 New Error le EE 43 Other changes 43 General Infortmiations ua su usun geheegt deg Seege 43 Resolved Issued compared to TATTO iudicet bte eese n tereti deas etia et rers ns Cre iai eeben 43 Known Issues 44 Firmware Version 14 1 1 0 seines ista va re used ko teu Free aera and RES Ee d aX E ee Ee uqa UEE sued ER REDE uapa dus ua 44 Features 44 Changes in AT Command Set compared to 14001 44 Resolved Issued compared to 10011 44 Known Issues 45 Interoperability Tests with Mobile bhones ee eem nennen nennen 46 Embedded Wireless Solutions Support vi Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x FIRMWARE VERSION 22 2 5 0 PRODUCTION F W February 2015 General Information This release is production firmware The majority of features and functions are now covered by automated regression tests This firmware is has been qualified with Bluetooth SIG as an end product under QDID 62011 New Features compared to v22 1 4 4 Compared to precedent firmware versi
65. onal AT NVF internal debug command for persistent store should not be used Embedded Wireless Solutions Support 25 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x New S Registers S744 8745 LED blink pattern to status assignment S744 LEDO 745 LED1 New Function Mapping Codes FMC 0x05 AudioOn for GPIO outputs New ATIs ATI75 query current BdAddr for cautious page scanning incoming peer address New Error Codes 114 ACR option flags wrong 115 tuple length doesn t match DREG 116 internal error code DREG 117 non volatile memory for dynamic register exhausted DREG 118 maximum number of tuples exceeded DREG 119 maximum dynamic register data length exceeded DREG 120 internal error code DREG 121 internal error code DREG Other Features Functionality This section lists AT commands for passing the ACR scratch record to persistent memory and vice versa Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages Dynamic Registers Status Indication Example for host less operation Resolved Issues Cautious page scanning AT BTP G lt BdAddr gt and AT BTM lt BdAddr gt This feature
66. ontent on the TG A browsing channel is created automatically on top of an existing AVRCP link whenever required After 5 seconds of no browsing activity the browsing channel is closed by BTM51x This browsing channel handling happens in the background invisible to the user or host controller no messages concerning browsing channel are sent to UART Media content on the target is structured in a tree oriented virtual file system BTM51x provides AT commands to change current path and to list items in the current path folder When listing folder items AT AVQFS it is likely to happen that the number of items being returned is limited by AVRCP packet size which means that only a partial window of the entire folder list is returned by one command This is why a start offset parameter s can be appended to AT AVQFS lt s gt which must be less or equal the total number of items in current folder If omitted then s defaults to 0 meaning that list will be returned from top first item The total number of items is indicated in the change path folder confirmation AVEC nltems and also in the start tag of a file system list AVFSL nltems nStartOffs lt nEndOffs gt lt nTotalltems gt AT AVQFSN N z next permits to list the next window of folder items by calculating the following start offset dynamically from the last printed list start offset nltems actually returned Hence multiple calls of AVQFSN will print all chunks
67. ope 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x FIRMWARE VERSION 18 1 3 0 PRODUCTION FIRMWARE Regression Testing Automated regression tests have been executed to cover all implemented features as well as fixed bugs to a reasonable level This aims to make sure that all AT commands and features function as described in the BTM51x user manual However given the huge amount of possible combinations of Bluetooth profiles roles and S Register settings there may be untested use cases left This firmware is qualified for production The BTM51x user manual is updated with this release as well Resolved Issues compared to 18 1 2 5 ATI57 Response for AVRCP flag was wrong 0x80 is now fixed 0x100 HFP In the first SCO link audio after a module reset the audio signal was not routed to the ADC DAC this has been fixed Auto SCO release on CVC security fail When a SCO connection audio is established with CVC enabled S318 gt 0 and the CVC security check fails ERROR 83 then the module automatically releases the SCO connection The failed security check would block any audio signal to be routed through the ADC DAC so the auto release just cleans up this exceptional scenario With properly configured CVC the security check should always pass However during the development phase this issue can occur easily Changed S Register Defaults 332 1 in factory default settin
68. ormation Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages Resolved Issues compared to 14 1 1 2 The implementation of the EIR commands AT BTE family have shown a number of instabilities in previous f w versions Many of these issue have been resolved and the EIR implementation can be Embedded Wireless Solutions Support 40 Laird Center http ews support lairdtech com www lairdtech com bluetooth Europe 44 1628 858 940 Hong Kong 852 2923 0610 Americas 4 1 800 492 2320 Release Notes BTM51x regarded as much more stable with this version It was also found that the maximum EIR data length is limited to 160 Bytes due to internal memory limitations Ref 1 28 When inquiring with friendly name e g AT BTIN and a remote device was discoverable but not connectable this remote device was not listed in the inquiry results though discoverable This has been fixed now If the friendly name cannot be retrieved e g due to not connectable then a will be displayed instead of the friendly name Ref 1 29 Range of 102 limited to O 1FF was 0 7FF Known Issues The maximum length for extended inquiry data is 160 Bytes The Bluetooth specification allows up to 240 Bytes but this cannot be achieved on BTM510 511 due to internal memory limitations Ref 2 1 4 out of the 8 GPIO lines are bound to modem control line functionality DTR DSR DCD RI Hence
69. oth stack DCD is not asserted on the PC end This can be detected by a terminal program e g Ezurio Terminal If the connection is initiated from the PC then DCD is asserted as expected Ref 2 34 General Information The first part of the firmware version number has changed from 14 to 18 This reflects the transition from bluestack firmware 23e to 23i The change was required in order to support the 5 generation of CVC ATI1 now returns the new bluestack build number 6530 FIRMWARE VERSION 18 1 2 2 ENGINEERING FIRMWARE This engineering release was a preview version for 18 1 2 3 and was not distributed widely Version 18 1 2 2 is identical with 18 1 2 3 from the feature s prospective However 18 1 2 2 contains a bug which blocks incoming audio in a SCO link if CVC is enabled This issue is fixed in v18 1 2 3 Embedded Wireless Solutions Support 38 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x FIRMWARE VERSION 14 1 2 1 ENGINEERING FIRMWARE Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages General Information This firmware is an engineering release for a particular project It contains a new feature for a HF to request creation of DTMF tones from a
70. persistent store prepend AT ACRn replace record in persistent store by scratch record AT ACLn load copy record from persistent store to scratch record AT ACDn delete one record from persistent store AT ACD delete all records from persistent store New S Registers S368 Set SLAVE role on connect S369 Set MASTER role on connect 319 SPP smart disconnect S370 Auto Connect Service mode bitmask S371 Discoverable connectable window for FMC Ox1 1 Changed S Registers 535 link supervision timeout in seconds S559 alternate response message for ERROR and OK bit mask New Error Codes 95 DSP plugin doesn t support query mode 96 DSP busy 97 profile is busy with a current request 99 real error code is greater than 99 query ATI12 to obtain the actual error code 100 ACR table not available in RAM ACR a record for the same BdAddr already exists in persistent store and at least one flag of that 101 record s profile mask overlaps with the profile mask of the scratch record 102 ACR write to persistent store was not successful 103 ACR the history index passed doesn t exist 104 ACR is invalid e g BdAddr 000000000000 or profile mask 0 105 AC service stopped by safety timeout in status attempt 106 ACR table empty AC service not started 107 X AC service must be stopped for modification of ACR table i08 missing profile mask in 102 at least one profile
71. r 44 1kHz and 48kHz is advertised in the SEP capabilities per default That means the external I2S device must be able to deal with both of these sampling rates Other sampling rates are not accepted during SEP negotiation configuration No more memory slots are consumed for this usage scenario now Ref 3 29 bz 292 ACR table in RAM was not cleared on AT amp F This should be fixed now FIRMWARE VERSION 18 1 3 7 ENGINEERING F W Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages General Information The new auto connect service ACS and auto connect records ACR allow automatic re connection with flexible configuration Refer to section 0 for an introduction and to section Error Reference source not found for an example This release contains new commands to manage the HCI role master slave of BTM51x and to query status information of all connected profiles This is allows optimizing performance in multi profile multi device scenarios Firmware version v18 1 3 6 was skipped This release is engineering firmware and must be used for development purposes only Embedded Wireless Solutions Support 27 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x
72. rface bad sound Ref 5 36 Sometimes a bad sound was observed under this condition during listen tests Has not been investigated in detail yet Embedded Wireless Solutions Support 13 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x ATH while incoming call ringing Ref 5 20 It was observed that sending ATH to BTM51x while a call is incoming ringing HFP can cause unexpected behaviour of BTM51x Recommendation is to avoid this situation Arbitrary recovery time after disconnect Ref 5 21 It was observed that an obviously arbitrary recovery time after disconnection is causing a NO CARRIER response on a new connection attempt AT SPD AT APD AT AVD etc Workaround insert a 1 second delay before issuing a new connection command 0 5s may also do but possibly not as stable as 1s FIRMWARE VERSION 22 1 4 4 ENGINEERING F W April 2014 This section lists AT commands for passing the ACR scratch record to persistent memory and vice versa Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages General Information This release is engineering firmware and must be used for development purposes only The upgrade to AVRCP1 5 comes with pl
73. rt lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x SPP parser exception for auto connect Up to now when attempting an SPP connection the AT parser was fully suspended until the connection was established CONNECT or until the connect attempt failed NO CARRIER for some reason This was found to be inconvenient in auto connect scenarios It happened that suddenly the AT parser did not react as expected due to the auto connect service ACS starting an SPP connection attempt in the background To solve this an exception was added which keeps the AT parser alive when ACS is attempting an SPP connection However only a limited subset of AT commands is available when ACS is enabled Refer to section Added AT NVF and AT NVQ to the list of available commands when auto connect service ACS is enabled Auto Connect Records On AT ACL lt n gt load AC record from persistent store to scratch memory the index field is set to 0 This allows distinguishing the scratch record from a record in persistent store the scratch record AT AC should always have index 0 whereas any record from persistent store ATI72 should have an index of greater or equal 1 AC service is disabled automatically if no more AC records exists e g after normal disconnect Changed year to 2013 on ATI5 new response Laird Te
74. rt lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x FIRMWARE VERSION 18 1 2 3 ENGINEERING FIRMWARE Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New Features compared to v14 1 2 1 Clear Voice Capture CVC support configurable DSP algorithms for noise reduction and echo cancellation NREC provided by CSR New bluestack firmware New version 23i Build number 6530 ATI1 New AT Commands AT HFZ AT HFF New ATI Commands ATI32 Query CVC license key ATI35 Query list of available CVC images with SYSID security status technical name and SDK ATI36 Status of boot time CVC license check applies if S318 gt 0 ATI57 Query profile flags of current connections same format as S register 102 ATI58 Query number of current connections sum of ATI60 ATI67 ATI59 Returns 1 if a pre set PIN code by AT BTK is available New S Registers S318 Select CVC DSP image New Asynchronous Messages When a CVC image is loaded on entering a SCO audio link CVCID xxxx whereby xxxx Sysld 4 hex digits When the security check for a CVC image has failed invalid or no license key HF AU2 or HS AU2 ERROR 83 will be returned as we
75. s firmware version has a slightly higher risk of unknown issues being found during testing and application development Nevertheless existing regression tests have successfully passed which provides a basic level of confidence This release is engineering firmware and must be used for development purposes only New Features compared to v18 1 4 0 Hands free profile HFP CVC support of 7 generation UFE working with USB2SPI now no LPT interface required any longer SPP SCO using WBS Improved management of call records for HFG Embedded Wireless Solutions Support 19 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x AT Command Interface This section describes changes in the AT command interface with this firmware release Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New AT Commands AT UC x AT HFGW x AT RX lt x gt AT HFGW AT HFN lt x gt AT HFGF AT HFFV AT HFGFV AT HFV lt x gt AT HFGFN AT HFW lt x gt AT HFGCH AT HFGV x AT HFGCHL Changed AT Commands AT HFGCA HFG call answer AT HFGCH HFG call hang up AT BTT Query trusted device list AT GOU Incremental increase of outp
76. s has been fixed Known Issues GPIO output FMC Audio On 0x05 not working for ring tones Ref 4 41 A GPIO utilized to indicate audio activity i e for control an external audio amplifier does currently not indicate playback of a tone On BTM51x DVK 04 J9 should be set to position 3V3 in order to hear the tone FIRMWARE VERSION 22 1 4 2 ENGINEERING F W December 2013 General Information Embedded Wireless Solutions Support 16 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x This release contains a number of features which were missing in the previous version such as support for PCM I2S interface and CVC due to the changes in CSR API A number of new features has been added an a couple of bugs were fixed New Features compared to v22 1 4 1 s Support for PCM and 12S digital audio interfaces added back in Fixed sampling rate for 12S and PCM internal sampling rate conversion for external audio codec for A2DP sink and e SCO Low power features for HFP HSP and SPP sniff mode SM sniff sub rating SSR Pre defined power setting parameters AT amp FO 8 Auto BTX extended by multi profile policy CVC support completed 7 generation ADK 2 5 1 A2DP encoders and decoders upgraded to ADK2 5 SBC APTX AAC AT Command Interface This section lists the changes in the AT co
77. sccssecsscsssestessseccssssssataressasessnadsasdeavesaccssatassacessndseveatacseatabeasassetuesearabens 7 New ATIs 8 AVRCP1 5 8 AVRCP1 5 AT Command Overview sionerien nanoia n o a aini 8 Messages 8 AVRCP1 5 Application Notes Sr retenta a iac eet ai a aira area aiae ia EER 9 AVRCP1 5 Initialisation Role Configuration ee 9 AVRCP gel ege EE 9 AVRCP ODSFatIOIS as u ny bedeitende ees ikusal 10 UR Se EEN 10 BOW ins Pe TEE 10 AMRCP Sniff Mode Delay etude tte pt eroe tene le teta E EER a ata bern 11 AMRCP1 5 COMtIMUATION auos cette ra eee etta e xi eat oes etait aee mee 11 AVRCP1 5 AT Command Reference eneeeeeseee nan na n 11 Resolved Issues 12 Known Issues 13 Firmware Version 22 1 4 4 Engineering FA 14 General Jprterpation RR 14 New Features compared ov 214A21 nennen ee enrn eee nennen ener nens 14 AT Command Interface 14 Ee EE 14 New ATIs 14 New ERROR COGS eerte ue dI iiie a cami EE 14 Chang eq Be TEE 15 Other eir rem 15 Known Issues 15 Firmware Version 22 1 4 3 Engineering HAM 15 General Informatio cce arescit eti ren prier a lma Peter ede vue oe nate TI reete dn 15 New Features compared to vi2iA42 nennen nenne nennen nnn nennen enn enne 15 AT Command Interface 15 New AT Commande 15 N WS REGISTORS MEME 16 Changed S ReglSters saei etiim tuc once tutu tpe t ciat egen eas eee t ta ne 16 Application Notes uu T P 16 Other
78. sed was sent only after F 44100 APSTR A2DP audio on A2DP stream resume Although this is not expected and not logic there was no way to solve this issue in short term This is why unfortunately the parser of a host controller must be designed in a way to tolerate this behaviour AUTO BTX for HFG revert to conn disc on connection released Ref 4 72 It was observed that in particular situations after disconnection of HFG ATI27 0 whereas ATI27 3 would be expected due to default 308 setting In the precedent scenario HFG call records were tested and AT HFGCH was issued This has not been investigated in more detail yet Late AVPTC1 message Ref 4 54 It was observed that under certain conditions AVPTC1 confirmation button released was sent quite late E g when sending AT AVC44 start playing AVPTC1 was received about 1s after start of audio stream APSTR lt Has not been investigated in detail Whenin sniff sub rating mode ATIA4 144 returning 0 0 no sniff mode Ref 4 48 Given that sniff mode is a pre requisite for sniff sub rating ATI44 144 should not indicate no sniff mode by ATI44 144 0 0 Sub rating intervals are integer multiples of current sniff interval AT SRM lt pm gt AT SRS lt pm gt not accepting decimal parameter pm Ref 5 35 This was observed during regression test Workaround parameter profile mask must be passed as hex with prepended CVC HS2mic with PCM or I2S inte
79. stent buffer the commands stop working or only display a part of the buffered data It was not possible to manually reproduce this issue consistently Ref 2 20 Embedded Wireless Solutions Support 41 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x FIRMWARE VERSION 14 1 1 2 ENGINEERING FIRMWARE Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages New Features compared to v14 1 1 1 APTX codec for A2DP source fully and sink demo supported Configure UART for high throughput or low latency New ATI Commands ATI26 query active A2dp codec ATI27 query current scan state New S Registers 307 optional A2DP codec enable 0 1 default 0 S308 Auto BTX on A2DP connection 0 3 default 3 S544 configure UART for high throughput or low latency default 1 high throughput Other Changes Maximum number of trusted devices changed back from 9 to 10 ATI6 General Information This release v14 1 1 2 is engineering firmware and must be used for development only The new features of this release are not covered yet by automated regression tests There have been manual sanity checks but there might still be bugs and untested use cases left
80. t site on the BTM51x Product Pages Features Bluetooth 2 1 2 14 EDR Supported Profiles Serial port profile SPP Advanced Audio Distribution Profile A2DP Source Sink Audio Video Remote Control Profile AVRCP Control Target Hands free Profile HFP Hands free unit and Audio Gateway Headset Profile HSP Headset and Audio Gateway Dial up Network Profile DUN Dial Terminal SCO eSCO audio connection Sniff mode Standard non standard UART baud rates configurable Secure simple pairing SSP Extended inquiry response EIR CSRBluestack build 5365 native mode 56bit encryption 23e Bluetooth approval listed under QDID BO16227 Tested by regression tests Changes in AT Command Set compared to 14 0 0 11 New feature Call Records AT HFGC query call records New S register 354 enable disable verbose mode for call record presentation New command AT HFGBO 1 disable enable in band ringing when SLC connected HE state ATI65 enhanced by 5 call setup SLC and 6 call setup audio AT HFGH returns ERROR 63 when issued during a call setup state ATI66 5 or 6 AT HFGA and AT HFGR return ERROR 63 when issued during a call setup state ATI66 5 or 6 Resolved Issued compared to 14 0 0 11 AVRCP A BTM410 411 has refused incoming AVRCP connections observed in CT and TG role this has been fixed Ref 0 2 0 3 Embedded Wireless Solutions
81. tead of slots Embedded Wireless Solutions Support 17 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x ATI318 detailed list of available CVC images Changed ATIs ATI35 Compact list of available CVC images ATI38 List of A2DP decoder images Other Changes ATI amp Fx x 1 8 Changes sniff parameters for medium and low power configuration FS message for PCM Role indication appended PCM M master PCM S slave Application Notes This section lists functional description of new features Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages External PCM Configuration I2S Configuration SCO Audio Interfaces Fixed sampling rate PCM I2S S419 mapping CVC 7 generation Low power operation Page and inquiry scanning Multi profile auto BTX S308 Sniff mode SM Sniff sub rating SSR Registers related to SSR S348 SSR maximum remote interval S349 SSR minimum remote timeout S350 SSR minimum local timeout More details about SSR can be found in the BTM41x low power application note Pre defined power settings AT amp FO 8 Fixed Issues HFP1 6 specification Missing feature to reject audio request fro
82. tent store AT BTED delete EIR data from persistent store AT BTEW query EIR data from persistent store note the content of the persistent EIR data storage is copied to the baseband at boot time New S Registers S355 audio resource override 0 3 default 1 356 enable restoring of last gain used for SCO 0 3 default 3 357 enable restoring of last gain used for A2DP 0 3 default 3 New Unsolicited Messages APSTR lt streaming started initiated remotely APSTR streaming started initiated locally APSUS streaming suspended initiated remotely APSUS streaming suspended initiated locally New ATIs ATI61 ATI21 SCO token index of the profile instance owning an active SCO connection O none 1 HS 2 HSG 3 HF 4 HFG 5 SPP_BTA ATI22 last SCO output gain ATI23 last SCO input gain ATI24 last A2DP output gain ATI25 last A2DP input gain New Error Codes 76 memory allocation attempt was unsuccessful 77 incorrect A2DP state see ATI61 78 request rejected due to priority related to 355 settings Other changes Maximum number of trusted devices changed from 10 to 9 ATI6 General Information This release v14 1 1 1 is engineering firmware and must be used for development only The new features of this release are not covered yet by automated regression tests There have been plenty of manual sanity checks but there might still be b
83. tion Mapping Code Changes Output FMC 0x06 has been added to indicate whenever any profile is connected Other Features Functionality Management of persistent store Resolved Issues Afix provided by CSR ADK2 0 has been implemented to solve AAC compatibility issues with iOS devices The fixed AAC decoder DSP image is now being used for each AAC connection Ref 3 31 New maximum EIR data size 112 verify by ATI29 Due to changes in the memory layout the maximum size of EIR data had to be limited to 112 Bytes This is required to prevent a module lock up loop which can occur if data with size 112 Bytes contained in EIR persistent store which is copied to the baseband at boot time The only way to recovery was deletion of some PSKEYs Ref 3 14 bz 273 Reboot on AT BTEW An bug was identified where a module reboot occurs if the data to be displayed contains non printable characters which would be displayed in their hex value with leading V Example to reproduce AT BTE AT BTE 01A AT BTEW AT BTEW Firmware versions affected v18 1 3 8 v18 1 3 9 The issue should be fixed now Ref 3 9 bz 262 ATI28 current sampling frequency for ADC DAC no value was displayed for SCO connections Should be fixed now Ref 3 42 New range for S744 and S745 1 17 0 10 was 1 18 0 10 before but status ID 18 was invalid Other Changes Embedded Wireless Solutions Support 24 f Laird Center http ews suppo
84. ttributes etc AT AVS Command family set AVRCP related data player browsing path etc Messages The following table lists all AVRCP1 5 messages in alphabetical order Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages AVAPC Available players changed notification AVAPI Available player item AVAPL Available players list start end AVBS Battery status of remote TG changed notification AVCPL Current play list start end AVFC Folder path changed confirmation AVFSI File system item folder AVFSL File system list start end AVMEA Media element attribute browsing AVMEI Media element item track AVNPA Now playing track attribute AVNPC Now playing content has changed notification AVNPT Now playing track attributes start end AVPA Player application setting attribute only AVPC Player application setting changed list start end indication of value change AVPE Player application setting attribute value text AVPI Play item confirmation AVPL Player application setting response list start end response to AT AVQPV A AVPP Playback status parameters response AT AVQPP AVPPC Playback position changed notification AVPS Play status changed notification AVPT Player attribute text AVPV Player application s
85. ugs and untested use cases left Resolved Issued compared to 14 1 1 0 Deprecated undocumented usage of LED1 to indicate audio related states e g loopback Ref 1 24 Embedded Wireless Solutions Support 43 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x Module was not discoverable after releasing an SPP connection ATH while 512 4 Ref 1 25 This issue has been fixed Known Issues t has been observed that an A2DP source with an active SCO connection HFG will reject an incoming A2DP connection request if A2DP is not allowed to override SCO S355 In the same circumstance the A2DP source can initiate an outgoing A2DP connection but it will not initiate the start of the A2DP stream This is not really an issue but the different behaviour towards incoming and outgoing connections might not be expected as this thas been observed that the audio related USMs for HFP and HSP e g HF AUT1 HEG AUT HS AUT HSG AUT can appear as AUDIO ON SCO or AUDIO ON eSCO This not intended and can happen if SPP is enabled along with HFP or HSP Workaround disable SPP in 102 if not needed Ref 1 26 FIRMWARE VERSION 14 1 1 0 Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Suppor
86. ut gain volume New S Registers S376 Enable WBS S377 Enable CVC BEX S378 Close audio on voice recognition stop S379 Enable all SLC RX messages S380 Enable all unknown command messages S381 HFP indicators enable mask S383 Enable inquiry exception Changed S Registers S375 Inhibit active encryption request S584 Enable Disable SCO eSCO S581 Set HF supported features 596 Set HFG supported features 589 5590 Set output gain level S689 S690 Set output overall gain level New ATIs ATI39 Query current DSP image plus short string descriptor New Asynchronous Messages HSRX data HSGRX data e HFRX data HEGRX data HSUC data HSGUC data HFUC data HFGUC data Embedded Wireless Solutions Support 20 Center http ews support lairdtech com www lairdtech com bluetooth Laird Americas 1 800 492 2320 Europe 44 1628 858 940 Hong Kong 852 2923 0610 Release Notes BTM51x Changed Asynchronous Messages SCO eSCO WBS sampling rate FS16000 link key type appended to pairing message PAIR 0 New GPIO Function Mapping Codes FMC Outputs Indicate voice recognition status HF 7 Indicate voice recognition status HFG 8 Inputs Toggle voice recognition activation AT HFVT 18d 0x12 Toggle voice recognition activation AT HFGVT 19d 0x13 New Codes for Status Indication D744
87. was not working as expected for HFP HSP and DUN Incoming connection and pairing requests were accepted from any device Whenever a cautious page scanning address is set only the device with matching BdAddr is expected to pair and connect successfully Incoming requests from any other device are expected to be refused This issue has been fixed now Ref 3 30 ATI75 allows querying the current cautious page scanning address which helps to make the process more transparent Please read also section O FIRMWARE VERSION 18 1 3 8 ENGINEERING F W This section lists AT commands for passing the ACR scratch record to persistent memory and vice versa Refer to the BTM51x User Guide and Hardware Integration Guides for detailed information Documentation can be found on the Laird Embedded Wireless Solutions Support site on the BTM51x Product Pages General Information This release contains mainly bug fixes for the previous release 18 1 3 7 as well as a few new ATI commands and S Registers This release is engineering firmware and must be used for development purposes only Embedded Wireless Solutions Support 26 f Laird Center http ews support lairdtech com Americas 1 800 492 2320 Europe 44 1628 858 940 www lairdtech com bluetooth Hong Kong 852 2923 0610 Release Notes BTM51x New ATIs ATI51 query encryption status combined OR ed ATI52 query encryption status separately New S Registers S372 inhibit auto

Firmware Release Notes - BTM510/BTM511

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