USER MANUAL Free2move Wireless Audio Headset Version 2.00
Contents
1. erasa ot USER MANUAL Free2move Wireless Audio Headset Version 2 00 3 Bluetooth BLUETOOTH is a trademark owned by Bluetooth SIG Inc U S A and licensed to Free2move Rev a 2007 10 16 Rev a v 2 00 Table of contents 1 NORMA ON ttc 3 1 1 Supported do ue ra Tea ue ERE e Cea trea naked e uen e 3 1 2 General 9 3 1 3 Bac E 6 1 4 Supported Bluetooth profiles iecore nente 6 2 hae RE RRRRRRERRERERR EBENE REKTERRR ERE 8 2 1 mie T aiU oro ro n 8 2 2 Headset Handstree tette e a a aa SA RE As Rae R a 8 2 3 Headset 8 2 4 Handsfree specific sss eene eren enne nne enne nennen nn en enne nns 8 2 5 A2DP 9 2 6 Clear paired devices and restore to default settings 9 3 UART Command Interface tpe cr rion E rxx EpIM Ra Ta IE SER IN HON HEN SHE2. Emulation Line delay 0 milliseconds Auto detect Terminal Setup Character delay Telnet terminal ID ANSI ASCII Receiving v Append line feeds to incoming line ends Force incoming data to 7 bit ASCII Wrap lines that exceed terminal width Backscroll buffer lines 500 0 Play sound when connecting or disconnecting Input Translation ASCII Setup Auto detect Auto detect SCROLL CAPS NUM Capture Print echo 2007 Free2move Page 22 28 Rev a v 2 00 4 2 Startup the Bluetooth module and enter pairing mode When the module is powered up the following messages will appear on the screen WAH HyperTerminal File Edit View Cal Transfer Help 28 28 EVENT STRTE R2DP 1 Ready EVENT STATE RVRCP 1 Ready EVENT STRTE SPP 1 Ready EVENT STRTE HFP 1 Ready EVENT RERDV Power on to start Connected 00 00 07 Auto detect 38400 8 N 1 SCRO CAPS Capture Print echo 2007 Free2move AB Page 23 28 Start the application by sending DO POWER ON n r ON command WAH HyperTerminal File Edit view Call Transfer Help Rev a v 2 00 Set the module in pairing mode with the DO PAIR 285 EVENT STRTE R2DP 1 Ready EVENT STRTE RVRCP 1 Ready EVENT STRTE SPP 1 Ready EVENT STRTE HFP 1 Ready EVENT RERDV Power on to start 00 POWER ON OK EVENT POWER ON DO PRIR ON OK EVENT PRIR
3. 10 DOWN BACKWARD High Volume down MFB 11 MFB PLAY PAUSE High Multi Function Button Most buttons has more than one functionality The MFB UP and DOWN buttons have dual proposes depending on the BEN input Standard functions BEN z 0 MFB The Multi Function Button is used for a variety of different purposes For example power on off pick up an incoming call drop an active call set the module in pairing mode etc UP The UP button is used for increasing the volume DOWN The DOWN button is used for decreasing the volume Alternative functions BEN 1 PLAY PAUSE The PLAY PAUSE button is used for a variety of different purposes For example to play or pause a active A2DP stream mute a active call connecting to A2DP source and stopping a active audio stream FORWARD The FORWARD button is used for jumping forward to next song or fast forward the current song When the FORWARD button and the BACKWARD button are held down for gt 10 sec the list of paired devices is cleared BACKWARD The BACKWARD button is used for jumping back to the previous song or to fast backward the current song When the FORWARD button and the BACKWARD button are held down for 10 sec the list of paired devices is cleared 1 2 3 Power hold The POWER HOLD PIO 1 output is used for controlling an external voltage regulator When the Bluetooth module is powered up correctly POWER HOLD will go high in order to enable the voltage regulator The mo
4. CREE REESE 10 3 1 DO Commands oinin EET 10 3 2 GET and SET commands sisne anenai eai aaa RETIRER ERR CX aiaiai aai 13 3 3 only COMMANGS 14 3 4 SEIT only commands aiu ee ee S e ape E EO EE Re LO T 17 3 5 EVENT indiCalloris eee enter ehe HERES XRRNN ERES ERROR Aaaa RIEN ERR aaia 18 4 Getting SUE Beer 21 4 1 Configure Hyper Terminal 2 c rre erect dd er bcne dee d YE etu ed deeds 21 4 2 Start up the Bluetooth module and enter pairing 23 5 Example FARA Wale ausa sus iin c iini nS REXXLU On NAUTAE BEN Anaru aana AANA niaka MD E EKGE ER 25 5 1 eai e 25 5 2 Microphone input RR 26 6 Firmware revision HISLOFV iuis inpr iba ri i Gio c n blo dt MK 27 6 1 2 27 6 2 DRAET V iet 27 2007 Free2move AB Page 2 28 Rev v 2 00 1 General information Wireless Audio Headset WAH is Free2move s standard firmware for Headset applications It is intended for applications that want to incorporate Headset functionality to be able to communicate with for example mobile phones The firmware can be used either as stand alone with a button interface as the only input of controlling the firmware or connected to another serial device e g microcontroller through the UART interface The current version
5. The commands presented below are readable through the GET command and are writeable through the SET command When commands have more than one argument a comma separates each argument Example to SET the power command This example shows how you can configure the WAH to auto start up and auto shutdown after 20 sec in idle mode The power configuration can be set by sending SET POWER 1 20V over the UART interface If the command was sent successful WAH will answer with SET POWER 3 2 1 This command is used to set or read the name of the WAH The argument must be 1 32 characters L GET SET NAME text 3 2 2 PIN This command is used to set or read the pin code of the WAH The argument must be 1 16 characters GET SET PIN text number 323 POWER This command is used to set or read the power configuration of the WAH GET SET POWER number 0 1 on off number 0 65535 seconds 3 2 4 UART number 24 48 96 192 384 GET SET UART 576 1152 number 0 2 number 0 2 24 2400 48 4800 96 9600 192 19200 384 38400 default 576 57600 1152 115200 Argument2 Stopbits Stopbits 0 No stop bit 1 One stop bit default 2 Two stop bits No parity default 1 Odd parity 2 Even parity 2007 Free2move AB Page 13 28 Rev v 2 00 3 25 BATTERY AIO 0 input of the F2MO3MLA can be used for battery monitor
6. Ur 815 510 8 sly Layn dst doi E gr NOL ETCH l z E 714 NILL 80 axe XL Lawn zo 19 i 9 Luo TN NI ce c Sud 92 vo 25 p 29 19 LA yn m NO9 o gt Ova xnv z ous sy jo 943 SOW IJS e OSIN 195 wa ing 7t 9 iL HINO d E 21 TN Ino BETNANO SONS 5 ely Sox e N NMOG INN 92 usta TaN EM ear 9 XL 5 3 25 ovd xnv slo XL Luvn SMS ava xnv E ilow Siw E 515 lavn SVOLZLOL iva 7 Sly lava 3022 8601496 S3N Sr dra oy 185 ZT OSIW 146 Nwod Zr 195 TT sito 195 HOG leloa las 210 198 e dn 81 UT 1500 148 gostazadns lve Nag J _ 22 uen OMASI 8 ONAS 1OS OvSlv8 G3H _ 96 L3 1no Wod eu SMod 02 LZ xozz 9 JT Wod 13 VIINEOWZA tn sa Zs Ls ny zo 3 poi 308 D Su daw zo 301 x 3049 5 eu x x aman A ana A NI A I 4 aan 001 001 IMS zu S Ava A Rev a v 2 00 5 2 Microphone input The audio input is intended for use from 10 V 294dB SPL to about 100 V 994dB SPL With biasing resist
7. includes the following Bluetooth profiles A2DP sink controller HFP 1 5 headset HSP headset SPP slave Firmware running on the The connecting device is Free2move Bluetooth module typically a mobile phone A2DP sink 4o A2DP source AVRCP controller AVRCP target HFP 1 5 headset gt 1 5 audio gateway HSP headset lt gt HSP audio gateway SPP endpoint gt SPP connecting 11 Supported hardware The Wireless Audio Headset V 2 00 firmware is currently supported on the following Free2move products F2M03MLA Free2move Low power Bluetooth Multimedia module with Antenna Article nr 2 803 1 2 General I O 1 2 1 Leds RED 6 Red led recommended color BLUE 7 Blue led recommended color The different states of the Wireless Audio firmware are indicated with the following led indications Idle Blue led on for 200 ms and off for 2000 ms Connected Blue led on for 1000 ms and off for 2000 ms Power On Off Blue led on for 2000 ms and off for 200 ms Pairing Blue led on for 100 ms and then red led on for 100 ms 2007 Free2move AB Page 3 28 Rev v 2 00 1 2 2 Buttons BEN 8 High Enable A2DP specific buttons UP 9 UP FORWARD High Volume up DOWN
8. AH firmware is shipped with the following settings as factory default Parameter Default Value Security Enabled PIN code 0000 in ASCII format Local Bluetooth name Free2move WA Automatic reconnect Enabled Automatic answer Disabled Automatic power up Disabled Automatic switch off Enabled Automatic switch off timeout 2 min MP3 decoding Disabled UART baudrate 38400 bps UART stop bits 1 UART parity None Print Battery Measurements Disabled Battery Warning Level Disabled Battery Shutdown Level Disabled Volume HFP level 10 Volume A2DP level 10 Volume Tone level 21 Volume Mic level 8 These settings can be configured through the UART interface For more information see section 3 2 1 4 Supported Bluetooth profiles The current version includes the following Bluetooth profiles e A2DP sink controller HFP 1 5 headset HSP headset SPP slave Firmware running on the The connecting device is Free2move Bluetooth module typically a mobile phone A2DP sink A2DP source AVRCP controller AVRCP target HFP 1 5 headset lt gt 1 5 audio gateway HSP headset lt gt HSP audio gateway SPP endpoint D gt gt SPP connecting 1 4 1 Headset and Handsfree Profile HSP HFP The Headset and Handsfree profile is used for full duplex audio connections to mobil
9. CP Disconnect from AVRCP device Disconnect from HFP device SPP Disconnect from SPP device 3 1 6 SEND The SEND command uses the Serial Port Profile for sending argument X to the connected device DO SEND X Sends string X of data to the connected SPP device 3 1 7 VOL The VOL command can be used to set the gain of the specific profile or just increment decrement the volume of the current Profile in use DO VOL Increase volume Decrease volume MG number 0 15 Set microphone gain SHG number 0 15 Set HFP gain SAG number 0 15 Set A2DP gain 3 1 8 ANSWER DO ANSWER Answer incoming call 3 1 9 REJECT DO REJECT Reject incoming call 2007 Free2move AB Page 11 28 Rev a v 2 00 3 1 10 HANGUP DO HANGUP Hang up current call 3 1 11 CALL DO CALL LAST Dial the last called number VOICE Do a voice dial call 3 1 12 TRANSFER DO TRANSFER Transfers the call between the HAW and the connected device 3 1 13 PLAYPAUSE DO PLAYPAUSE Send a Play or Pause event to the connected AVRCP device 3 1 14 STOP DO STOP Send a Stop event to the connected AVRCP device 3 1 15 FORWARD DO FORWARD Send a Forward event to the connected AVRCP device next song 3 1 16 BACKWARD DO BACKWARD Send a Backward event to the connected AVRCP device previous song 2007 Free2move AB Page 12 28 Rev v 2 00 3 2 GET and SET commands
10. Indication of which decoder is used in the current A2DP stream text MP3 SBC 3 5 2 BATTERY If SET BATTERY is enabled to show values the following EVENT is received every 30 sec EVENT BATTERY READING number If the warning or and shutdown threshold values are enabled by the SET BATTERY command and the threshold value is over the actual input value the following events will be received EVENT BATTERY DEAD shutdown threshold text LOW warning threshold 3 5 3 STATE Every time the state of the WAH is changed the following event is received Look at section 3 3 9 for more information about the different State id s EVENT STATE A2DP number text AVRCP number text number text SPP number text 3 5 4 READY The READY event is received when the Bluetooth module has started up properly EVENT READY text 3 5 5 POWER Event indicating if power up down has occurred EVENT POWER ON OFF text 3 5 6 PAIR Event indicating pairing mode EVENT PAIR ON OFF 2007 Free2move AB Page 18 28 Rev v 2 00 3 5 7 VOL Event indicating changes in gain levels EVENT VOL MG number text SHG number text SAG number text ArgumentiGaintype Description MG Microphone Gain SHG Speaker Headset Gain SAG Speaker A2DP Gain 3 5 8 CAL
11. LER ID If caller id is enabled by the remote device the following indication is received EVENT CALLER ID ENABLED DISABLED text If caller id is enabled the following two indications will be received upon an incoming call EVENT CALLER ID Number pur NN EVENT CALLER ID NAME text 3 5 9 REMOTE If the remote device is connected with the Handsfree profile the following indications will be received upon changes in telephone signal strength and battery charge levels EVENT REMOTE SIGNAL STRENGTH BATTERY CHARGE number 0 5 number 0 5 3 5 10 RECEIVE DATA If the SPP is connected and the remote device sends data to WAH the following indication will re received EVENT RECEIVE DATA data 3 5 11 RING If an incoming call is received the following indication will be received until the call is answered or rejected EVENT RING 2007 Free2move AB Page 19 28 Rev v 2 00 3 5 12 PROFILE Since both Handsfree and Headset Profile shares the use of argument HFP in all commands implemented in WAH EVENT PROFILE is used to distinguish which Profile is in use This event is received upon every new Headset or Handsfree connection EVENT PROFILE HFP text HSP text 2007 Free2move AB Page 20 28 Rev v 2 00 4 Getting started The Wireless Audio Headset WAH firmware can easily be test
12. NKQUALITY Read the Link Quality value from the current Bluetooth connection The link quality is a value of the current Bit Error Rate BER The LINKQUALITY values is only present if a HFP connection is established GET LINKQUALITY number As a rule of thumbs a link with a BER between 0 and 0 196 is workable Trying to run a link with a BER above 1 gives poor results The table below shows the different value representation of the BER reading Between 255 and 215 each digit represent 0 002596 BER Thus 255 0 0 254 0 002596 253 0 005096 252 0 007596 etc until 215 0 196 Between 214 and 90 each digit represent 0 0896 BER Thus 215 0 196 214 0 1896 213 0 2696 etc until 90 2 196 2007 Free2move AB Page 16 28 Rev v 2 00 Between 89 and 0 each digit represent 0 6496 BER Thus 90 2 196 89 2 74 88 3 38 etc until 0 59 7 3 4 SET only commands 3 4 4 DEFAULT SET DEFAULT Set all configurable settings to factory default Removes list of paired devices 3 4 2 PIOAUXDAC Changes the output voltage of AUX DAC The default value is 128 and is 1 8 when VCC 3 3V The output voltage is depending on VCC voltage level SET PIOAUXDAC number 0 255 Output value of AUX DAC output 0V VCC 2007 Free2move AB Page 17 28 Rev a v 2 00 3 5 EVENT indications 3 5 1 A2DP DECODER
13. ON Connected 00 01 00 Auto detect 38400 8 N 1 Now connect and pair the WAH from the remote Bluetooth device and the following messages will appear on the screen if your mobile phone supports the Handsfree AVRCP and A2DP Bluetooth Profiles WAH HyperTerminal File Edit View Transfer Help Da 28 28 100 PAIR ON OK PRIR ON PRIR OFF STATE 2 Connecting REMOTE SIGNAL STRENGTH 5 REMOTE BRTTERV CHRRGE 5 STRTE HFP 3 Connected PROFILE HFP Connected with handsfree profile CRLLER ID DISRBLED Remote end does not support caller i STATE R2DP 3 Signalling Active STATE RVRCP 3 Connected Connected 00 01 34 Auto detect 38400 8 N 1 2007 Free2move AB Page 24 28 v 2 00 c 5 Example Hardware Schematic 5 1 1 wd ino 261 Mzbivalas 1481 TN no Ino i81 ZS En 109Nvslva 9 llo po Zs oL ori x Naa m an Do ey iosNvsiva Asnvd AV1d ia ZMS Page 25 28 zs Fa a 69 Lo ewe ansa 3303204 plete fio NO39303 eio H i N 9 LS SIN 5 Ti mom
14. OTE ADDR text XX XX XX XX XX XX NAME text 2007 Free2move AB Page 14 28 Rev a v 2 00 3 3 8 FIRMWARE Read firmware name GET FIRMWARE text 3 3 4 SWVERSION Read firmware version GET SWVERSION text 3 35 HWVERSION Read hardware version of the Bluetooth module GET HWVERSION text 3 3 6 ARTICLE Read article number of product GET ARTICLE text 3 3 7 FCC Read FCC id of product GET FCC text 3 3 8 000 Read Bluetooth QDID of product text 3 3 9 STATE Read the current state of each Bluetooth profile GET STATE A2DP number AVRCP number HFP number SPP number text Initialising Ready Initiating Signaling Active Connected Streaming Oi o 2007 Free2move AB Page 15 28 Rev a v 2 00 0 Initialising 1 Ready 2 Connecting 3 Connected 0 Initialising 1 Ready 2 Connecting 3 Connected 4 Outgoing Call Establish 5 Incoming Call Establish 6 Active Call SPPStateid 5 0 Initialising 1 Ready 2 Connecting 3 Connected 4 Disconnecting 3 3 10 RSSI Read the RSSI value of the current Bluetooth connection The value can be from 128 to 127 The RSSI values is only present if a HFP connection is established GET RSSI number 3 3 11 LI
15. cidental indirect or consequential damages arising out of sale resale use or misuse of the product Users of Free2move products should make their own evaluation to determine the suitability of each such product for the specific application 2007 Free2move AB Page 28 28
16. dio Out N Right Output analogue Speaker output negative right channel 1 2 6 External audio codec Disabled in current version of Wireless Audio Headset firmware PCM IN Input Synchronous data input PCM OUT Output Synchronous data output PCM CLOCK Output Synchronous data clock PCM SYNC Output Synchronous data sync 1 2 7 Serial Peripheral Interface This interface is used for program emulation debug and IC test It is also the means by which the F2M03 flash may be programmed before any boot program is loaded The SPI signals should be routed out from the module to be able to upgrade the firmware on the module in the future when the module is already soldered on a main PCB SPI CSB Chip select for Synchronous Serial Interface active low SPI MISO Serial Peripheral Interface data output SPI CLK Serial Peripheral Interface clock SPI MOSI Serial Peripheral Interface data input 1 2 8 Asynchronous data interface The UART can be used for extended information configuration settings and is also the interface to send serial data over the Bluetooth link See section 3 2 4 for more information about the UART interface TX Output High UART transmit data RX Input High UART receive data RTS Output Low UART request to send CTS Input Low UART clear to send 2007 Free2move AB Page 5 28 Rev a v 2 00 1 3 Default settings The W
17. dule will automatically power down by putting POWER HOLD low after a specified idle time see section 3 2 3 POWER HOLD 1 High Output Hold power high for external power regulator 1 2 4 Battery measurement The BAT AIO 0 input can be used to measure external voltage levels For more information regarding the battery commands see section 3 2 5 MEASURE BAT 0 Input Measure battery voltage 0V VCC 2007 Free2move AB Page 4 28 Rev a v 2 00 1 2 5 Internal audio codec The Bluetooth module F2M03MLA has an internal audio CODEC that is made for direct speaker drive and microphone input using a minimum number of external components see product datasheet for detailed information The AUX DAC output can be used for bias voltage for the microphone For more information about the AUX DAC see section 3 4 2 Audio In P Left Input analogue Microphone input positive left channel Audio In N Left Input analogue Microphone input negative left channel Audio In P Right Input analogue Microphone input positive right channel Audio In N Right Input analogue Microphone input negative right channel AUX DAC Output analogue Microphone bias voltage Audio Out P Left Output analogue Speaker output positive left channel Audio Out N Left Output analogue Speaker output negative left channel Audio Out P Right Output analogue Speaker output positive right channel Au
18. e phones and similar for telephone call purpose WAH supports both the Headset and the Handsfree Profile as the Headset role The connecting device must have either the Headset or Handsfree Profile as Audio Gateway role The profile used between WAH and the connecting devices depends on the supported profiles If the WAH firmware initiates the connection it will first try to use the Handsfree profile if this fails it will choose the Headset profile 2007 Free2move AB Page 6 28 Rev a v 2 00 142 Advanced Audio Distribution Profile A2DP The A2DP profile is used for receiving high quality audio data WAH supports A2DP sink which make it possible to receive audio streams from an A2DP source The current A2DP decoder supports SBC and MP3 decoding The MP3 decoding can be enabled over the UART interface see section 3 2 8 for more information This software contains MP3 technology which incorporates intellectual property owned by Thomson and or Fraunhofer Gesellschaft Supply of this product does not convey a license under the relevant intellectual property of Thomson and or Fraunhofer Gesellschaft 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 mp3licensing com 1 4 8 Audio Video Remote Control Profile AVRCP The AVRCP profile is used for controlling the Audio stream from the streaming d
19. ed on a PC with a serial port terminal application such as Hyper Terminal in Windows 4 1 Configure Hyper Terminal Start Hyper Terminal and create a New Connection Connection Description New Connection Enter a name and choose an icon for the connection Name WAH Icon mosseus Specify which serial port and settings to use COM1 Properties __ Port Settings Bits per second 38400 Connect x Enter details for the phone number that you want to dial Data bits 8 Parity None Country tegion Sweden 46 Stop bits 1 Area code 035 Flow control Hardware Phone number Connect using Y DK Cancel Apply 2007 Free2move AB Page 21 28 Rev a v 2 00 Enter Properties and then ASCII Setup Enable Echo typed characters locally in order to see the locally generated text on screen WAH HyperTerminal Edit View Cal Transfer Help New Connection Open Save Save As Page Setup Print WAH HyperTerminal Edit View Call Transfer Help 55 WAH Properties Connect To Settings Function arrow and ctrl keys act as Terminal keys Windows keys ASCII Setup ASCII Sending Backspace key sends Send lit ids with line feed Del Space Sere Rie M v Echo typed characters locally
20. evice If the remote unit supports AVRCP target the AVRCP profile is used for controlling the A2DP stream E g play pause and changing song 1 44 Serial Port Profile SPP The Serial Port Profile is used for sending and receiving serial data to the remote device See section 3 1 6 for more information about sending serial data over the Bluetooth link 2007 Free2move AB Page 7 28 Rev v 2 00 2 Button interface 2 1 Power up down 2 1 1 Power up Hold MFB for 2 sec when WAH is off WAH will try to connect to the last paired device until a connection or power down timeout occurs 2 1 2 Power down Hold MFB for gt 5 sec when WAH is on 2 1 3 Pairing Hold MFB for gt 5 sec when WAH is off WAH will remain in pairing mode for 5 min 2 1 4 Automatic power down When the power down timeout occurs the WAH will automatically power down The default timeout is 2 min 2 2 Headset Handsfree specific 2 2 1 Answer Press MFB during incoming call to answer the call 2 2 2 Drop call Press MFB during active call to drop the current call 2 2 3 Increase Decrease Volume Press UP or DOWN in order to control the volume 2 3 Headset specific 2 3 1 Dial last called number Press MFB in order to dial the last called number 2 4 Handsfree specific 2 4 1 Voice dial Press MFB in order to do a voice dial 2 4 2 Reject incoming call Hold down MFB for gt 2 sec during an incoming call in order to rejec
21. ing Battery monitoring is disabled by default but it can be activated with the SET BATTERY command Argument 1 is 1 when Battery monitoring is activated and 0 when deactivated If battery monitoring is activated it will measure the input voltage every 30 second and print the value as an EVENT BATTERY indication The battery thresholds can be calculated from the following equation AIO __ 1000 h2 AIO is the threshold value Argument 2 and 3 and is the desired threshold voltage in Volt and R is from the Example schematic and if we use the values from the example design the equation can be simplified to AIO 1000 zV 405 220k 150k GET SET BATTERY 0 1 number 0 65535 number 0 65535 3 2 6 AUTOFEATURES GET SET AUTOFEATURES number 0 1 on off number O 1 on off 3 2 7 VOLUME GET SET VOLUME number 0 15 number 0 15 number 0 15 number 0 22 3 2 8 ENABLEMP3 GET SET ENABLEMP3 number 0 1 3 3 GET only commands The following commands are used to retrieve information from the WAH or the connected device These commands cannot be used with the SET command 3 3 1 ADDR Read the local Bluetooth address GET ADDR text 3 3 2 REMOTE Read remote Bluetooth address or name from the current HFP Headset Handsfree connection GET REM
22. ors R16 and R17 equal to 1kQ this requires microphones with sensitivity between about 40dBV Pa and 60dBV Pa The microphone for each channel should be biased as shown in the schematic The input impedance at AUDIO IN LEFT AUDIO IN P LEFT AUDIO IN N RIGHT AUDIO IN P RIGHT is typically 20kQ C5 and C7 should be 47nF R17 sets the microphone load impedance and is normally in a range of 1 to 2 R16 C8 and C9 improve the supply rejection by decoupling supply noise from the microphone Values should be selected as required in the specification R16 may be connected to a convenient supply typically 1 8V delivered by AUX DAC output 2007 Free2move AB Page 26 28 Rev a v 2 00 6 Firmware revision history 6 1 V 2 00 New features in this version SPP profile e UART command interface 6 2 DRAFT V 1 00 First version 2007 Free2move AB Page 27 28 Rev a v 2 00 Contact information For support questions please contact your local dealer For other purposes use info free2move se Website www free2move se Local dealer distributor HENCE EUN S SUPE a EE NE ETE EE BU SUE tae ea The information given herein includes text drawings illustrations and schematics that are believed to be reliable However Free2move makes no warranties as to its accuracy or completeness and disclaims any liability in connection with its use Free2move will in no case be liable for any in
23. over the UART interface If the command was sent successful WAH will answer with DO ANSWER OkK n r If it does not exist any incoming call WAH will answer with DO ANSWER FAIL No incoming call n r 3 1 1 POWER To power up the application using the UART interface send DO POWER ON r if the WAH recognize the command it will answer with DO POWER ON To power down the application using the UART interface send DO POWER OFF r if the WAH recognize the command it will answer with DO POWER OFF OkK n r DO POWER ON Power up the module OFF Power down module 3 1 2 PAIR DO PAIR ON Set the module in pairing mode OFF Return to normal mode 2007 Free2move AB Page 10 28 Rev v 2 00 3 1 3 RESET DO RESET Soft reset the module 3 1 4 CONNECT The CONNECT command is used to connect to the last paired connected device The CONNECT command cannot be used as a general command for connecting to a given Bluetooth address It is only possible to connect the WAH to already paired devices The remote Bluetooth device should be responsible for setting up a new connection DO CONNECT A2DP Connect to last connected A2DP device AVRCP Connect to last connected AVRCP device Connect to last connected HFP device SPP Connect to last connected SPP device 3 1 5 DISCONNECT DO DISCONNECT A2DP Disconnect from A2DP device AVR
24. t it 2007 Free2move AB Page 8 28 Rev a v 2 00 2 4 3 Transfer active call to phone Hold down MFB for gt 2 sec during an active call in order to transfer it to the phone 2 5 A2DP specific 2 5 1 Play If a song is paused press PLAY PAUSE in order to play 2 5 2 Pause If a song is playing press PLAY PAUSE in order to pause 2 5 3 Connect to A2DP source Hold PLAY PAUSE for gt 2 sec in order to connect to the A2DP source 2 5 4 Forward Press FORWARD in order to jump to next song 2 5 5 Backward Press BACKWARD in order to jump to previous song 2 5 6 Fast forward Hold FORWARD for gt 800 ms in order to jump forward in active song 2 5 7 Fast backward Hold BACKWARD for gt 800 ms in order to jump backwards in active song 2 5 8 Stop Hold PLAY PAUSE for 22 sec in order to stop an active A2DP connection 2 6 Clear paired devices and restore to default settings Hold the buttons MFB UP and DOWN for gt 15 sec in order to clear the list of paired devices and restore all settings to default 2007 Free2move AB Page 9 28 Rev v 2 00 3 UART Command Interface The WAH firmware from V 2 00 supports configuration through the UART interface The firmware can be configured and extra status information can be sent from the module by using the UART interface Factory default settings for the UART interface are 38400 bps 8 data bits 1 stop bit and no parity All commands sent and received over
25. the interface are ended by a carriage return r command isn t recognized by the firmware it will answer with UNKNOWN COMMAND X n r where X is the command received by the module All commands and arguments are interpreted as ASCII data When an argument is specified as text this only state that the input or output argument most probably is Alphabetical characters When an argument is specified as number it states that the input or output argument is interpreted as a ASCII number given in the interval described within brackets Some commands use the argument HFP This is an argument and or indication from either the Handsfree HFP or the Headset HSP Profile Since WAH can only act upon one Headset Handsfree connection they both share the same argument The EVENT PROFILE command will state which Profile is in use For more information see section 3 5 12 31 DO Commands The DO commands is typically the commands that can be altered by using the buttons e g power on and answering an incoming phone call DO commands sent to the will be responded with the status information If the command is successful the WAH will respond with an OK and if the command is unsuccessful the module will respond with FAIL Some responses will give extra status information after a comma See example below Example to send the answer command If there is an incoming call to the phone the call can be answered by sending DO ANSWER V
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