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MIDI CPU Firmware Version 1.4 User Manual

1. SysEx Data Hex Meaning FO 00 01 5D 04 01 Fixed Header 00 Configuration Layer 0 00 00 4400 3C 7F___ Logic Input Trigger Note On Note 60 Velocity 127 oe bu NE Nec NN 0 Velocity 0 Note Off Tro 1 o o 01 01 44 00 3D 00 D E i ga 0 Velocity 0 Note Off 02 00 4400 3E7F___ Logic input Trigger Note On Note 62 Velocity 127 SARO i ee iui 0 Velocity 0 Note Off Too a POL vO EO aaa eae da 0 Velocity 0 Note Off 04 00 44 0040 7F__ logie Input Trigger Note On Note 64 Velocity 127 ope A UU ui 0 Velocity 0 Note Off co AE DO 0N a Nc rum 0 Velocity 0 Note Off ae LM att Db NEAN oe E 0 Velocity 0 Note Off Tyge LE no NN ati ee ae 0 Velocity 0 Note Off 2014 Sonarcana LLC Page 41 62 Highly Liquid MIDI CPU Firmware V 1 4 Figure 3 7 2 Factory Default Control Terminal Configuration Layer 00h Part 2 of 3 SysEx Data Hex Meaning 08 00 44 00 44 7F Control Terminal 8 Transition High to Low Logic Input Trigger Note On Note 68 Velocity 127 08 01 44 00 44 00 Control Terminal 8 Transition Low to High Logic Input Trigger Note On Note 68 Velocity 0 Velocity 0 Note Off 09 00 44 0045 TFT Input Trigger Note On Note 69 Velocity 127 09 01 44 00 45 00 Li AI us 0 Velocity O Note Off DA 00 44 0046 7F Logic Input Trigger Note On Note 70 Velocity 127 EE 00 Do ali b pu 0 Velocity 0 Note Off 0B 00 44 00 47 7F Logic I
2. Table 4 9 a Pull Up Resistor Control Bits Control Terminal Pull Up by Bit Byte 6 5 4 3 2 1 0 ph 15 14 13 12 pl 11 10 9 8 Figure 4 9 2 Factory Default Pull Up States SysEx Data Hex Meaning FO 00 01 5D 04 0C 00 00 All pull up resistors are enabled for control terminals 8 15 F7 2014 Sonarcana LLC Page 55 62 Highly Liquid MIDI CPU Firmware V 1 4 4 10 MIDI Messaging Throttle Normally the rate of MIDI CPU local MIDI message generation is limited only by the data rate of the MIDI hardware interface If desired the rate of local message generation can be reduced using the SysEx message shown in Figure 4 10 1 Larger values of mt result in a slower messaging rate When mt 7Fh messages are generated at a rate of roughly two per second When mt 00h the messaging rate is not restricted beyond the limitations of the hardware interface This setting does not affect the rate of output for messages sent as part of the MIDI CPU MIDI Merge function Figure 4 10 1 MIDI Messaging Throttle SysEx Message Hex Header Pull Up States Footer 6 bytes 2 bytes 1 byte FO 00 01 5D 04 0D mt F7 Figure 4 10 2 Factory Default MIDI Messaging Throttle SysEx Data Hex Meaning FO 00 01 5D 04 0D 00 MIDI messaging rate limited only by MIDI hardware interface data rate F7 2014 Sonarcana LLC Page 56 62 High
3. OCh ODh OEh OH AA HA 1 0c ccc mn mA 1 LO alr mA O mm ma dd 0 Or nm mm 2 Cr _ Si ge nn e COP C EO TO O OLO nr re nm __ O jm e e e e nm 2014 Sonarcana LLC Page 33 62 Highly Liquid MIDI CPU Firmware V 1 4 3 6 Logic Output LED Control Modes The following modes configure the control terminal specified by nn for logic output The MIDI CPU can control up to 64 LEDs arranged in an 8x8 matrix The matrix can be comprised of a mixture of individual indicator LEDs 7 segment numerical displays and 8 segment bar graph displays LED control functionality requires that at least one control terminal 0 7 be configured for LED Data Output and at least one control terminal 8 15 be configured for LED Common Output Control terminals configured for LED control output are subject the electrical limitations described in MIDI CPU Hardware User Manual 3 6 1 LED Data Output The control terminal generates a control signal that drives an attached LED matrix Must be used in conjunction with control terminals configured for LED Common Output Note Only control terminals 0 7 can be configured for LED data output If one or more control terminals are configured for LED data output control terminals 0 7 cannot be configured as matrix select outputs m
4. 004 7F Logic input Trigger Note On Note 6 Velocity 127 OD PIE ee ne Di dl 0 Velocity 0 Note Off 11 00 4400 4D TF T opic input Trigger Note On Note 77 Velocity 127 HOL EDI iii sa P 0 Velocity 0 Note Off 12 0044 004E 7F logic Input Trigger Note On Note 78 Velocity 127 a UU AE UU iii 7 a O Velocity O Note Off 1300 4400 4F TF 1 je Input Tigger Note On Note 79 Velocity 127 13 01 44 00 4F 00 Control Terminal 19 Logic Input Trigger Note On N Transition Low to High ote 79 Velocity 0 Velocity 0 Note Off 14 00 44 00 50 7F Control Terminal 20 Logic Input Trigger Note On N Transition High to Low ote 80 Velocity 127 14 01 44 00 50 00 Control Terminal 20 Logic Input Trigger Note On N Transition Low to High ote 80 Velocity 0 Velocity 0 Note Off 15 00 44 00 51 7F Control Terminal 21 Logic Input Trigger Note On N Transition High to Low ote 81 Velocity 127 15 01 44 00 51 00 Control Terminal 21 Logic Input Trigger Note On N Transition Low to High ote 81 Velocity 0 Velocity 0 Note Off 16 00 44 00 52 7F Control Terminal 22 Logic Input Trigger Note On N Transition High to Low ote 82 Velocity 127 16 01 44 00 52 00 Control Terminal 22 Logic Input Trigger Note On N Transition Low to High ote 82 Velocity 0 Velocity 0 Note Off 17 00 44 00 53 7F Control Terminal 23
5. 1 In response the MIDI CPU will send a SysEx message as shown in Figure 8 3 2 The key to firmware versions is shown in Table 8 3 a Figure 8 3 1 Firmware Version Retrieval SysEx Message Hex Complete Message 9 bytes FO 00 01 5D 04 00 7D 00 F7 Figure 8 3 2 Firmware Version SysEx Message Hex Header 6 bytes Version 1 byte Footer 1 byte F0 00 01 5D 04 7D yv F7 Table 8 3 a Firmware Versions vy Hex Firmware Version 0 1 0 01 1 1 02 1 2 03 1 3 beta releases 04 1 2a 05 1 3 production version 06 1 4 beta releases 07 1 4 production version 08 thru 7F Reserved for future versions 2014 Sonarcana LLC Page 61 62 Highly Liquid MIDI CPU Firmware V 1 4 9 0 Configuration Examples and Technical Support Numerous MIDI CPU project examples can be found at the MIDI CPU support forum Please visit the support forum to discuss your project http forum highlyliquid com 2014 Sonarcana LLC Page 62 62
6. 3 a For any group of LEDs sharing the same LED common output LEDO LED7 correspond to LED data output from control terminals 0 7 Figure 3 6 3 1 shows the standard segment labels for a 7 segment digit Output formats and corresponding d0 values are shown in Table 3 6 3 b and Table 3 6 3 c 2014 Sonarcana LLC Page 35 62 Highly Liquid MIDI CPU Firmware V 1 4 Table 3 6 3 a LED State Summary by Display Type LED State by LED State Register Value v LED7 LED6 LEDS LED4 LED3 LED2 LED1 LEDO 8 Bit Indication v bit7 vbit6 vbit5 vbit4 vbit3 vbit2 vbit I v bit 0 v998 v 8 v 8 VHB v 8 v 8 VHB v 8 7 6 5 4 3 1 0 7 Segment off seg G seg F seg E seg D seg C seg B seg A Bar Graph v gt 112 v296 v280 v gt 64 v248 v gt 32 v gt 16 on Display Type 3 Bit Indication Figure 3 6 3 1 7 Segment Display Segment Labels O 2014 Sonarcana LLC Page 36 62 Highly Liquid MIDI CPU Firmware V 1 4 Table 3 6 3 b LED Common Output Formats Part 1 of 2 d0 Common Display Type 00h Anode Non Inverted Olh Anode Inverted DENM 8 Bit Indication 02h Cathode Non Inverted 03h Cathode Inverted 04h Anode Non Inverted 05h A node Inverted Unsigned 7 Segment Display 00h 0 06h Cathode N
7. Address Primary Function 21h Note number of the last Note On message generated by the MIDI CPU 22h Note velocity of the last Note On message generated by the MIDI CPU 23h CC number of the last Control Change CC message generated by the MIDI CPU 24h CC value of the last Control Change CC message generated by the MIDI CPU 25h Program number of the last Program Change message generated by the MIDI CPU 26h Reserved for future use 27h Reserved for future use 28h Reserved for future use 2014 Sonarcana LLC Page 10 62 Highly Liquid MIDI CPU Firmware V 1 4 2 2 4 Configuration Layer Control Register Each control terminal is associated with multiple configuration Layers A configuration layer is globally enabled or disabled by setting or clearing the corresponding bit of the Configuration Layer Control Register See Table 2 2 4 a The power up value for the register is user configurable See Data Register Configuration Table 2 2 4 a Configuration Layer Control Registers Register Configuration Layer Address Bit3 Bit2 Bit1 Bit0 1Dh 03h 02h 01h 00h 2 2 5 Indirect Address Registers Registers 29h and 2Ah can be used together to implement indirect addressing of MIDI CPU data registers Register 29h is a pointer that can contain the address of a different register between 00h and 28h Any action using the a
8. Continuous Note mode note generation begins For d0 use the lower of the two control terminal numbers in the pair mm d0 Meaning d1 Meaning 6Ah Encoder Input Control Terminal Ignored 3 2 20 Logic Input Trigger Encoder Continuous Note Stop If the control terminal specified by d0 is configured in Encoder Input Continuous Note mode note generation halts For d0 use the lower of the two control terminal numbers in the pair mm d0 Meaning d1 Meaning 6Bh Encoder Input Control Terminal Ignored 3 2 21 Logic Input Trigger MIDI Reset A MIDI Reset message is generated when the control terminal input state changes mm d0 Meaning d1 Meaning 7Eh Ignored Ignored 3 2 22 Logic Input Trigger Data Register Increment The register specified by d0 is incremented by the amount d No MIDI event is triggered d0 Meaning d1 Meaning Data Register Address Increment Value 2014 Sonarcana LLC Page 20 62 Highly Liquid MIDI CPU Firmware V 1 4 3 2 23 Logic Input Trigger Data Register Decrement The register specified by d0 is decremented by the amount d1 No MIDI event is triggered mm d0 Meaning d1 Meaning 71h Data Register Address Decrement Value 3 2 24 Logic Input Trigger Data Register Sum Values The contents of register 40 is summed with the contents of r
9. Logic Input Trigger Note On N Transition High to Low ote 83 Velocity 127 17 01 44 00 53 00 Control Terminal 23 Transition Low to High Logic Input Trigger Note On Note 83 Velocity 0 Velocity 0 Note Off F7 Fixed Footer 2014 Sonarcana LLC Page 43 62 Highly Liquid MIDI CPU Firmware V 1 4 Figure 3 7 4 Factory Default Control Terminal Configuration Layers 01h 02h 03h SysEx Data Hex Meaning FO 00 01 5D 04 01 Fixed Header 01 02 03 Configuration Layers 01h 02h 03h For each control terminal 0 thru 23 Transition High to Low Logic Input Data Only 00 17 00 7F 00 00 00 For each control terminal 0 thru 23 Transition Low to High Logic Input Data Only F7 Fixed Footer 00 17 01 7F 00 00 00 2014 Sonarcana LLC Page 44 62 Highly Liquid MIDI CPU Firmware V 1 4 4 0 Global Configuration The MIDI CPU has several user configurable settings which are not associated with individual control terminals Each setting associated SysEx message and factory default value is described below The MIDI CPU acknowledges an incoming configuration message via the Activity Indicator LED 4 1 Matrix Note Velocity The velocity of MIDI notes generated by control terminal modes Matrix Select Note On Note Off and Matrix Select Note Toggle is determined by the value of Multipurpose Data register 1Eh To change the power up val
10. Raw Data Byte and a SysEx end fragment via Logic Input Trigger SysEx End Fragment in order to complete the SysEx message mm d0 Meaning d1 Meaning 5Dh SysEx buffer starting address Data length bytes 3 2 11 Logic Input Trigger SysEx Raw Data Byte A single SysEx data byte is generated when the control terminal input state changes The data must be preceded by a SysEx begin fragment via Logic Input Trigger SysEx Begin Fragment and must be followed by a SysEx end fragment via Logic Input Trigger SysEx End Fragment mm d0 Meaning d1 Meaning SEh Data Register Address for Data Byte Ignored 3 2 12 Logic Input Trigger SysEx End Fragment The end fragment of an arbitrary SysEx message is generated when the control terminal input state changes The generated SysEx fragment consists of data from the SysEx Data Buffer as specified by d0 amp dl followed by the standard SysEx End status byte F7h The fragment must be preceded by a SysEx begin fragment via Logic Input Trigger SysEx Begin Fragment and optionally by raw data via Logic Input Trigger SysEx Raw Data Byte mm d0 Meaning d1 Meaning 5Fh SysEx buffer starting address Data length bytes 2014 Sonarcana LLC Page 18 62 Highly Liquid 3 2 13 Logic Input Trigger MIDI Start A MIDI Start message is generated when the control terminal input state changes MIDI CPU Firmware V 1 4 d0 Meaning d1 M
11. Register associated with the control terminal Some modes cause a MIDI message to be generated when the input state changes e Analog Input Control terminal is configured as an analog input The input signal is continuously converted to a 7 bit digital value that is accessible from the Register associated with the control terminal Some modes cause a MIDI message to be generated when the input state changes e Logic Output Control terminal is configured as a digital logic output The resulting signal can be used together with logic inputs to monitor a switch matrix or can be used to drive an LED matrix Wiring examples for each category can be found in MIDI CPU Hardware User Manual Individual modes are described in sections 3 2 thru 3 5 2014 Sonarcana LLC Page 13 62 Highly Liquid MIDI CPU Firmware V 1 4 3 1 5 MIDI Channel ch Some values of mm associate the control terminal with a channel specific MIDI message For these modes the value of ch specifies which MIDI channel is used ch can direct the MIDI CPU to generate messages using either a fixed channel value or the channel value specified by the MIDI Channel Selection Jumper See Table 3 1 5 a The value of ch is ignored for modes which are not associated with a channel specific MIDI message Table 3 1 5 a MIDI Channel by ch Value ch MIDI Channel 00h From MIDI Channel Selection Jumper Olh 1 02h 2 03h 3
12. The minimum and maximum value for each register is user configurable See Data Register Configuration Table 2 2 2 a Analog Input Data Registers Register Control Address Terminal 03h 16 04h 17 05h 18 06h 19 07h 20 08h 21 09h 22 OAh 23 OBh 10 OCh 11 ODh 9 OEh 12 OFh 8 10h 13 2014 Sonarcana LLC Page 8 62 Highly Liquid MIDI CPU Firmware V 1 4 2 2 3 Multipurpose Data Each multipurpose data register can contain a 7 bit or 8 bit value If a control terminal pair is configured for rotary encoder input the 7 bit value in the corresponding data register 11h 1Ch is incremented or decremented by input activity See Table 2 2 3 a Control terminals configured for certain modes use values in data registers 1Eh 20h to from MIDI messages as described in Table 2 2 3 b Data registers 21h 28h are automatically updated with certain values during operation by the MIDI CPU See Table 2 2 3 c If the MIDI CPU control terminal configuration leaves any multipurpose register unused the register is available for general purpose use the register value can be altered via arithmetic operations and the register contents can be used to form MIDI or LED output For bitwise operations the register is treated as an 8 bit value For other arithmetic operations the register is assumed to contain a 7 bit value The power up value minimum amp maximum value and round robin behavi
13. be generated Note numbers are subject to MIDI Number Remapping mm d0 Meaning d1 Meaning 02h Fixed note number Data register address for pressure value 03h Data register address for note number Data register address for pressure value 3 4 3 Analog Input Control Change CC Whenever the analog input signal changes a Control Change message is generated mm d0 Meaning d1 Meaning 04h Fixed CC number Data register address for CC value 05h Data register address for CC number Data register address for CC value O 2014 Sonarcana LLC Page 26 62 Highly Liquid MIDI CPU Firmware V 1 4 3 4 4 Analog Input Program Change Whenever the analog input signal changes a Program Change message is generated mm d0 Meaning d1 Meaning 06h Data register address for program number Ignored 3 4 5 Analog Input Channel Pressure Whenever the analog input signal changes a Channel Pressure message is generated mm d0 Meaning d1 Meaning 07h Data register address for pressure number Ignored 3 4 6 Analog Input Pitch Wheel Whenever the analog input signal changes a Pitch Wheel message is generated mm d0 Meaning di Meaning 08h Ignored Data register address for position value 3 4 7 Analog Input Data Register Copy Value Whenever the analog input signal changes the contents of register d is stored in register dO No MIDI
14. ii 0 mn 0 mx 28h rr Q F7 Footer O 2014 Sonarcana LLC Page 47 62 Highly Liquid MIDI CPU Firmware V 1 4 4 4 Note Transposition The MIDI CPU can transpose locally generated notes by an amount that is adjustable in real time Note transposition is configured via the SysEx message described in Figure 4 4 1 If the register at address aa contains the value vy note numbers are increased by the value vy 40h This allows a range of transposition values between 64 vv 00h and 63 vv 7Fh When vv 40h no transposition takes place To disable note transposition use the value aa 7Fh The MIDI CPU transposes note numbers before performing any MIDI Number Remapping Figure d 4 1 Note Transposition SysEx Message Hex Header Transposition Register Address Footer 6 bytes 1 byte 1 byte F0 00 01 5D 04 0B aa F7 Figure 4 4 2 Factory Default Note Transposition SysEx Data Hex Meaning FO 00 01 5D 04 0B 7F Note transposition is deactivated F7 2014 Sonarcana LLC Page 48 62 Highly Liquid MIDI CPU Firmware V 1 4 4 5 MIDI Number Remapping The MIDI CPU can remap any locally generated note number CC number or program number to another before MIDI output is generated This can be useful for unusual switch matrix configurations or for changing the musical scale of MIDI output Remapping for each message type is independently acti
15. 00 09 00 F7 Active Sense On Off SysEx Message FO 00 01 SD 04 00 0A 00 F7 MIDI Number Remapping Flags SysEx Message FO 00 01 SD 04 00 OB 00 F7 Note Transposition SysEx Message FO 00 01 5D 04 00 OC 00 F7 Control Terminals 8 15 Pull Up Resistor SysEx Message FO 00 01 SD 04 00 0D 00 F7 MIDI Messaging Throttle SysEx Message FO 00 01 5D 04 00 7D 00 F7 Firmware Version SysEx Message Configuration dump all of the configuration data listed above AA ve Tels formatted as a series of SysEx messages 2014 Sonarcana LLC Page 57 62 Highly Liquid MIDI CPU Firmware V 1 4 6 0 MIDI Channel Selection Jumper Depending on Control Terminal Configuration the MIDI Channel Selection Jumper can be used to select the MIDI channel for messages sent or received by the MIDI CPU See MIDI CPU Hardware User Manual for diagrams When none of the channel jumpers are shorted the channel setting is 1 Shorting the 1 jumper adds 1 to the channel setting the 2 adds 2 to the channel setting etc For example if both the 2 and 4 jumpers are shorted the resulting channel setting is 1 2 4 7 2014 Sonarcana LLC Page 58 62 Highly Liquid MIDI CPU Firmware V 1 4 7 0 Activity Indicator LED The MIDI CPU Activity Indicator LED performs several functions Self Test Upon power up or device reset the Activity LED lights briefly before normal operation begins Config
16. 04h 4 05h 5 06h 6 07h 7 08h 8 09h 9 OAh 10 OBh 11 OCh 12 ODh 13 OEh 14 OFh 15 10h 16 3 1 6 Data dO d1 Depending on the value of mm d0 and dI can specify fixed values data register addresses or other information which determines the behavior of the control terminal Details are provided in the description of each mode 2014 Sonarcana LLC Page 14 62 Highly Liquid MIDI CPU Firmware V 1 4 3 2 Logic Input Trigger Modes Logic Input Trigger Modes configure the control terminal specified by nn as a logic input Changes to input state may trigger MIDI output or other events 3 2 1 Logic Input Trigger Note Off A Note Off message status 80h is generated when the control terminal input state changes Note numbers are subject to MIDI Number Remapping Note Note Off velocity data is ignored by most MIDI devices For efficient operation do not configure the MIDI CPU to send Note Off messages Instead use Note On messages with a fixed velocity value of 00h mm d0 Meaning d1 Meaning 40h Fixed note number Fixed note velocity 41h Data register address for note number Fixed note velocity 42h Fixed note number Data register address for note velocity 43h Data register address for note number Data register address for note velocity 3 2 2 Logic Input Trigger Note On A Note On message is generated when the control terminal input state changes Note numbers are subje
17. 05 nO nl n2 F7 Figure 4 5 3 MIDI Number Remapping Table Reset SysEx Message Hex Complete Message 7 bytes FO 00 01 5D 04 06 F7 Figure 4 5 4 Factory Default MIDI Number Remapping Flags SysEx Data Hex Meaning FO 00 01 SD 04 0A 00 Remapping is deactivated for all message types F7 Figure 4 5 5 Factory Default MIDI Number Mapping SysEx Data Hex Meaning FO 00 01 SD 04 05 00 01 02 03 04 05 06 07 08 09 0A OB OC OD OE OF 10 11 12 13 14 15 16 17 18 19 1A IB 1C ID IE IF 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 49 AA 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 SA 5B 5C 5D SE SF 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 TT 78 79 TA 7B 7C 7D 6E 7F F7 Each number is mapped to itself Effectively no remapping takes place 2014 Sonarcana LLC Page 50 62 Highly Liquid MIDI CPU Firmware V 1 4 4 6 SysEx Data Buffer The MIDI CPU is capable of sending arbitrary SysEx messages in response to control terminal input See the Logic Input Trigger System Exclusive SysEx control terminal mode The data payload of the generated SysEx message is formed from the contents of the SysEx Data Buffer To update the contents of the buffer send a SysEx message as shown in Figure 4 6 1 The SysEx data is written to the SysEx Data Buffer starting at address 0
18. 0h If fewer than 128 bytes are specified the remainder of bytes in the SysEx Data Buffer is filled with the value 7Fh Figure 4 6 1 SysEx Data Buffer Contents SysEx Message Hex Header SysEx Data Buffer Contents Footer 6 bytes up to 128 bytes 1 byte FO 00 01 5D 04 07 do di d2 F7 Figure 4 6 2 Factory Default SysEx Data Buffer Contents SysEx Data Hex Meaning FO 00 01 SD 04 07 00 01 02 03 04 05 06 07 08 09 0A OB OC OD OE OF 10 11 12 13 14 15 16 17 18 19 1A IB 1C ID IE IF 20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F 30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F 40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 53 54 55 56 57 58 59 5A 5B SC 5D SE SF 60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F 70 71 72 73 74 75 76 TT 78 79 7A 7B 7C 7D 6E 7F F7 The SysEx data buffer contains arbitrary data 2014 Sonarcana LLC Page 51 62 Highly Liquid MIDI CPU Firmware V 1 4 4 7 ADC Configuration The MIDI CPU uses an analog to digital converter ADC to measure the voltages on control terminals configured as analog inputs Measurements from the ADC are processed based on settings from the SysEx message shown in Figure 4 7 1 Figure 4 7 1 ADC Configuration SysEx Message Hex Analog Analog Reference Header Input Input Voltaze Footer 6 bytes Threshold Smoothing 1 x 1 byte 1 byte 1 byte y FO 00 01 5D 04 08 tt SS rr F7 4 7
19. 1 Analog Input Threshold tt When a control terminal is configured as an analog input the MIDI CPU first converts the analog signal to a 10 bit digital value and then reduces the 10 bit value to the 7 bit resolution employed by MIDI messaging Due to noise resulting from the analog to digital conversion process and or the instability of an analog input signal analog input values may fluctuate excessively causing the MIDI CPU to generate unwanted quantities of MIDI messages The Analog Input Threshold is the minimum quantity by which any 10 bit analog input value must change in order to trigger message generation The Analog Input Threshold acts on the 10 bit input value but is ignored whenever the resulting 7 bit input value reaches its minimum 0 or maximum 127 value 4 7 2 Analog Input Smoothing ss The MIDI CPU uses a rolling average algorithm to smooth the data waveform resulting from analog to digital conversion The value of ss determines the weight of the rolling average compared to the immediate analog input value Larger values of ss result in a smoother waveform Smaller values of ss result in a waveform that responds more quickly to input changes The valid range for ss is 00h to 04h O 2014 Sonarcana LLC Page 52 62 Highly Liquid MIDI CPU Firmware V 1 4 4 7 3 Analog Reference Voltage rr When one or more MIDI CPU control terminals are configured as analog inputs the MIDI CPU uses two reference voltages during
20. 2Ah Cathode Non Inverted Ters Con 2Bh Cathode Inverted 2Ch Anode Non Inverted Dh ER es Unsigned 7 Segment Display 00h 1 2Eh Cathode Non Inverted Ores Columa 2Fh Cathode Inverted 30h Anode Non Inverted 31h Ande ars Unsigned 7 Segment Display hex 32h Cathode Non Inverted 16s Column 33h Cathode Inverted 34h Anode Non Inverted 35h Pee een Unsigned 7 Segment Display hex 36h Cathode Non Inverted One Column 37h Cathode Inverted 2014 Sonarcana LLC Highly Liguid MIDI CPU Firmware V 1 4 3 6 4 LED Output Examples The figures below show four different configurations for a 2 common x 8 data LED matrix Additional groups of 8 LEDs can be driven with the additional common lines up to a total of 64 LEDs Figure 3 6 4 1 LED Matrix Non Inverted Common Anode Ha G a DC REG nuu TOYLNOI INVERTING BUFFERS OR PNP DRIVERS Q o z 5 2 o 2014 Sonarcana LLC Page 39 62 Highly Liguid MIDI CPU Firmware V 1 4 Figure 3 6 4 3 LED Matrix Non Inverted Common Cathode Fo LE G H DC REG n 71081NO2 INVERTING BUFFERS OR NPN DRIVERS dd ER bal Hi LE LEE LEE EEE CT a N TONLNOD 2014 Sonarcana LLC Page 40 62 Highly Liquid MIDI CPU Firmware V 1 4 3 7 Factory Default Control Terminal Configuration Figure 3 7 1 Factory Default Control Terminal Configuration Layer 00h Part 1 of 3
21. Highly Liquid MIDI CPU Firmware V 1 4 Fes eg Fw Bag Hap Em MIDI CPU Firmware Version 1 4 User Manual Updated 2014 04 03 Additional documentation available at http highlyliquid com support O 2014 Sonarcana LLC Page 1 62 Highly Liquid MIDI CPU Firmware V 1 4 Table of Contents LU Over sack Ee ERR SRA A O SN A an vua DR PS NERO ET About The MIDECPU steeds de ies es oe oe ge ees dd oe euet eV ren donde do ge asa seda cie esse D 1 2 About This Document sissies side ede eo oaa oec ek de ode oge dd aee Ge ok ode eo ode Ee ES AD 5 1 3 Additional Resources erssssesseernnuennnnsvnsssennnnennnnsnnsssennnsennnnsnnsesernnnennnnsnnnesernnsnennnsseresennnnnennsveene 2 0 Theory of OperafiOn asses EE N NS id ee Ge Ge dee eg ee ae dee Re se ee dese 0 6 2 1 GT OR EE TTE Qi MIDIMero Heer NG 6 2 1 2 Matrix Select Signal Generation oret ira toaster ea REN eee 6 2 1 3 Control Input Monitoring sise 6 2 1 4 MIDI Message Getieration otn RU Seen EE ila aed ee AENEIS 6 2 5 DEDGonttol de ss M ta aeu ge ER EE OE ili N 7 AN OE ET RE EE AA GIRI 2 21 Logie Input Data 5 EE delves bel ne dne edited ipei 7 2 22 Analog Input Dat Lorelei labile illa iaia 8 2 2 3 Multipurpose Data List 9 2 2 4 Configuration Layer Control Register 11 2 2 5 Indirect Address Reglsters nali obese ila e Re a obe ei qe ee 11 3 0 Control Terminal Configuration cccscscsccscsccccccsccccccccccsc
22. MIDI CPU control terminal associated with the configuration chunk Values 00h thru 17h correspond to control terminal numbers 0 thru 23 2014 Sonarcana LLC Page 12 62 Highly Liquid MIDI CPU Firmware V 1 4 3 1 3 Transition tt Control terminals configured in Logic Input Trigger Modes can trigger one event on the input signal transition from high to low and a different event on the transition from low to high For example a control terminal might trigger a Note On message when the input signal changes from high to low and a Note Off message when the signal changes from low to high For Logic Input Trigger Modes only the value of associates the configuration chunk with one transition or the other See Table 3 1 3 a When configuring a control terminal for any mode other than a Logic Input Trigger Mode use the value tt 00h Table 3 1 3 a Logic Input Trigger Mode Transitions tt Associated Transition 00h High to Low Falling Edge 01h Low to High Rising Edge 3 1 4 Mode mm Parameter mm specifies a function for the control terminal specified by nn Valid range is 00h to 7Fh The meanings of d0 and d depend on the value of mm Each control terminal mode falls into one of three categories e Logic Input Control terminal is configured as a high impedance digital logic input with a built in pull up resistor The input state is either a binary 1 or 0 that is accessible from the Logic Input Data
23. ata register bit 0 generates messages with program number d0 bit 1 generates messages with program number d0 1 bit 2 generates messages with program number d0 2 etc mm da sa D d0 Meaning di Meaning 3Ch OOh Program number for data bit 0 Matrix Data Bitmask 3Dh 01h Program number for data bit O Matrix Data Bitmask 3Eh 02h Program number for data bit 0 Matrix Data Bitmask 3Fh ae Olh Program number for data bit 0 Matrix Data Bitmask 2014 Sonarcana LLC Page 32 62 Highly Liquid 3 5 6 Matrix Data Bitmask Logic Output Matrix Select Modes employ a bitmask specified by the value of d1 MIDI CPU Firmware V 1 4 When processing data from the switch state data register the MIDI CPU can ignore certain data bits as directed by the bitmask Bits with a bitmask value of 0 are ignored Values for d and the corresponding bitmasks are shown in Table 3 5 6 a When a switch matrix does not employ all 8 control terminals associated with a data register the correct bitmask prevents the unused control terminals from interfering with matrix monitoring The unused control terminals can therefore be configured for other purposes Table 3 5 6 a Matrix Data Bitmasks dl Data Bitmask Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0 00h 1 l 1 Olh 02h 03h 04h 05h 06h 07h 08h 09h OAh OBh
24. cessscccsssccssssccsscsscssscees 12 Sal SysEx Message Formaat sede ke iaia KE SLI Layer Wai OR ER AE Duae 12 3 1 2 Control Terminal Identifier NN ee ss 12 31 3 Transition 1 e oai e aa ee vee 13 3 1 4 lt Mode mm EE Nera e Un ene de 13 3 1 MIDI Channel Ch 5 2 ip cad een Bae we Resin aie eee ee es 14 3 16 DataX d0 Air 14 3 2 Logic Input Trigger Modes nia L5 3 2 1 Logic Input Trigger Note Off RR AR ee Re RA Re Re Re ee Re ria oa Gee Re ee Re nnne aron 15 3 22 Logic Input Trigger Note Ot 24i breen 15 3 2 3 Logic Input Trigger Aftertouch ss 16 3 2 4 Logic Input Trigger Control Change CC se sise 16 3 2 5 Logic Input Trigger Control Change CC Toggle nennen 16 3 2 6 Logic Input Trigger Program Change ses 17 3 2 7 Logic Input Trigger Channel Pressure 17 3 2 8 Logic Input Trigger Pitch Wheel nisus eei te te gi e T ee a degna di 17 3 2 9 Logic Input Trigger System Exclusive SYSEx 18 3 2 10 Logic Input Trigger SysEx Begin Fragments 18 3 2 11 Logic Input Trigger SysEx Raw Data Byte enne 18 3 2 12 Logic Input Trigger SysEx End Fragments 18 32 13 Logic Input Trigger MIDI Start ise SE Aradia AAA cee eee 19 3 2 14 Logic Input Trigger MIDI Stop sise 19 2014 Sonarcana LLC Page 2 62 Highly Liquid MIDI CPU Firmwar
25. ct to MIDI Number Remapping Note A Note On message with a velocity of 00h is equivalent to a Note Off message mm d0 Meaning d1 Meaning 44h Fixed note number Fixed note velocity 45h Data register address for note number Fixed note velocity 46h Fixed note number Data register address for note velocity 47h Data register address for note number Data register address for note velocity 2014 Sonarcana LLC Page 15 62 Highly Liquid MIDI CPU Firmware V 1 4 3 2 3 Logic Input Trigger Aftertouch An Aftertouch message is generated when the control terminal input state changes Note numbers are subject to MIDI Number Remapping mm d0 Meaning d1 Meaning 48h Fixed note number Fixed pressure value 49h Data register address for note number Fixed pressure value 4Ah Fixed note number Data register address for pressure value 4Bh Data register address for note number Data register address for pressure value 3 2 4 Logic Input Trigger Control Change CC A Control Change CC message is generated when the control terminal input state changes mm d0 Meaning d1 Meaning 4Ch Fixed CC number Fixed CC value 4Dh Data register address for CC number Fixed CC value 4Eh Fixed CC number Data register address for CC value 4Fh Data register address for CC number Data register address for CC value 3 2 5 Logic Input Trigger Control Change CC Toggle A Control C
26. ddress 2Ah actually takes place at the address contained in register 29h There is no physical register at location 2Ah See Table 2 2 5 a The power up value minimum and maximum value and round robin behavior of register 29h is user configurable See Data Register Configuration Table 2 2 5 a Indirect Address Register Register EE Function 29h Indirect Pointer 2Ah Indirect Data Access 2014 Sonarcana LLC Page 11 62 Highly Liquid MIDI CPU Firmware V 1 4 3 0 Control Terminal Configuration Each MIDI CPU control terminal is associated with a control terminal configuration which is defined by one or more configuration chunks The user sets the configuration for each control terminal via MIDI SysEx message Configuration is retained when the MIDI CPU is disconnected from a power supply The MIDI CPU acknowledges an incoming configuration message via the Activity Indicator LED New users may benefit from first reviewing the Configuration Examples and Technical Support The factory default configuration for each control terminal is described in Factory Default Control Terminal Configuration 3 1 SysEx Message Format Figure 3 1 1 shows the format of the Control Terminal Configuration SysEx Message The message consists of a fixed header a variable length body and a fixed footer The body of the message consists of a layer number followed by one or more 6 byte configuration chunks each specifying a behavi
27. e CC Toggle RR AR ee RR AR AR ee Re ee Re Re ee 31 3 5 5 Matrix Select Program Change eee eee e e e RU RS E e iei Ee ee Ee Eg wee 32 3 5 6 Matrix Data Bitf sk s pas Boogie teet etie ete pe E bate o eos 33 3 6 Logic Output LED Control Modes usasssasaesnssasseresnnsrennp nsnsnesonsnnneskannesesnassnnanersnsnnenrperssnenesas D 3 61 LED D ta Output sheet an einen A etasjen Gets 34 3 62 LED Common Output trea reU ER nn Ge Ere S ee 34 3 6 3 LED Output Formal i addice RO od he eee es 35 2014 Sonarcana LLC Page 3 62 Highly Liquid MIDI CPU Firmware V 1 4 3 6 4 LED Output Examples Ee ere nora rg SE An er nee EE det ne N GEL GE GE GR Dee ati 39 3 7 Factory Default Control Terminal ConfigurafiOn ssseessssssse sesse ee eere ee Ge Ge eeaa 41 4 0 Global Configura piana EE Oe AS 41 Matrix Note Velocity canili aa 45 4 2 Control Change CC On Off Values esse sesse see Ge Ge tetas esee GEE 45 4 3 Data Register Configuration aiar iii ri 46 4 4 Note Transposifioni saGainai acta 48 4 5 MIDI Number Reimappindi iii divine eN iaia 49 4 6 SysEx Data Buffer cT 51 4 7 ADC Conficiratih os ee es ie ee bak eR ed Ee ee Eg ia ad VIR UE ke ariano 52 4 7 1 Analog Input Threshold tt ss 52 4 12 Analog Input Smoothing Ss EE das quai nr SEE ES Ee Ge ee Sedna ek Ee Ge RISE Lala 52 4 7 3 Analog Reference Voltage fr ss 53 4 8 Active Sense On OTf esee ES Ek es
28. e MIDI CPU 9 If updating from version 1 1 or earlier power up the MIDI CPU and send the following SysEx message F0 00 01 5D 04 OB 7F F7 10 If updating from version 1 3 or earlier power up the MIDI CPU and send the following SysEx message FO 00 01 5D 04 04 03 00 00 7F 00 04 00 00 7F 00 05 00 00 7F 00 06 00 00 7F 00 07 00 00 7F 00 08 00 00 7F 00 09 00 00 7F 00 0A 00 00 7F 00 0B 00 00 7F 00 0C 00 00 7F 00 0D 00 00 7F 00 OE 00 00 7F 00 OF 00 00 7F 00 10 00 00 7F 00 11 00 00 7F 00 12 00 00 7F 00 13 00 00 7F 00 14 00 00 7F 00 15 00 00 7F 00 16 00 00 7F 00 17 00 00 7F 00 18 00 00 7F 00 19 00 00 7F 00 1A 00 00 7F 00 1B 00 00 7F 00 1C 00 00 7F 00 1D OF 00 OF 00 1E 7F 00 7F 00 IF 7F 00 7F 00 20 00 00 7F 00 21 00 00 7F 00 22 00 00 7F 00 23 00 00 7F 00 24 00 00 7F 00 25 00 00 7F 00 26 00 00 7F 00 27 00 00 7F 00 28 00 00 7F 00 29 00 00 28 00 F7 8 2 Notes When updating firmware use a MIDI CPU power supply voltage of 6 0V or greater Do not interrupt the transmission of the firmware update SysEx message A continuously blinking Activity LED indicates an error in the transmission of the firmware update SysEx message If a continuously blinking Activity LED is observed repeat the procedure from the beginning O 2014 Sonarcana LLC Page 60 62 Highly Liquid MIDI CPU Firmware V 1 4 8 3 Firmware Version SysEx Message During normal operation the current MIDI CPU firmware version can be retrieved by sending the SysEx message shown in Figure 8 3
29. e MIDI link is still operating Active Sense messages are automatically generated at the rate of approximately 4 per second when no other MIDI data is being generated This function is not required for most applications MIDI CPU Active Sense generation can be enabled or disabled using the SysEx message shown in Figure 4 8 1 When aa 00h Active Sense is disabled When aa 01h Active Sense is enabled Figure 4 8 1 Active Sense On Off SysEx Message Hex Header Active Sense Footer 6 bytes 1 byte 1 byte FO 00 01 5D 04 09 aa F7 Figure 4 8 2 Factory Default Active Sense SysEx Data Hex Meaning FO 00 01 5D 04 09 00 Generation of Active Sense messages is disabled F7 2014 Sonarcana LLC Page 54 62 Highly Liquid MIDI CPU Firmware V 1 4 4 9 Control Terminals 8 15 Pull Up Resistor All MIDI CPU control terminals feature on board pull up resistors The pull up resistors for control terminals 8 15 can be disabled The pull up resistors can be enabled or disabled using the SysEx message shown in Figure 4 9 1 Bits 3 0 of ph and pl correspond to control terminals 8 15 as shown in Table 4 9 a When a bit is set to 1 the pull up on the corresponding control terminal is disabled Bits 6 4 of ph and pl are ignored Figure 4 9 1 Control Terminals 8 15 Pull Up Resistor SysEx Message Hex Header Pull Up States Footer 6 bytes 2 bytes 1 byte F0 00 01 5D 04 0C ph pl F7
30. e V 1 4 3 2 15 Logic Input Trigger MIDI Start MIDI Stop Toggle 19 3 2 16 Logic Input Trigger MIDI Clock 19 3 2 17 Logic Input Trigger Analog Continuous Note Start 19 3 2 18 Logic Input Trigger Analog Continuous Note Stop 20 3 2 19 Logic Input Trigger Encoder Continuous Note Start 20 3 2 20 Logic Input Trigger Encoder Continuous Note Stop 20 3221 T gic Input Trigger MIDI Reset etes ando dadas RIT Gd HE ERR A 20 3 2 22 Logic Input Trigger Data Register Increment ss 20 3 2 23 Logic Input Trigger Data Register Decrement 21 3 2 24 Logic Input Trigger Data Register Sum Values nennen nennen 21 3 2 25 Logic Input Trigger Data Register Copy Value 21 3 2 26 Logic Input Trigger Data Register Store Value 21 3 2 27 Logic Input Trigger Data Register Clear Set Toggle Bit 21 3 2 28 Logic Input Trigger Global Refresh ea RA Re Re RA Re Re p ee Re Re ee 22 3 2 29 Logic Input Data Only ise eee ren EE i p N EE aaa ndo 22 3 3 Logic Input Rotary Encoder Modes seecersvereseverenesenenesenenesenenenennnesennererenenereneensvensenveenseeeser 23 3 3 1 Encoder Input Continuous Note 23 3 3 2 Encoder Input Control Change CC Re GR AR RA Re Ge Re AR ee E Re ee Re Re Re ee ee Rae 23 3 3 3 Encoder Inpu
31. eaning Ignored Ignored 3 2 14 Logic Input Trigger MIDI Stop A MIDI Stop message is generated when the control terminal input state changes mm d0 Meaning d1 Meaning 65h Ignored Ignored 3 2 15 Logic Input Trigger MIDI Start MIDI Stop Toggle Alternating MIDI Start and MIDI Stop messages are generated when the control terminal input state changes d0 Meaning d1 Meaning Ignored Ignored 3 2 16 Logic Input Trigger MIDI Clock A MIDI Clock message is generated when the control terminal input state changes mm d0 Meaning d1 Meaning 67h Ignored Ignored 3 2 17 Logic Input Trigger Analog Continuous Note Start If the control terminal specified by d0 is configured in Analog Input Continuous Note mode note generation begins d0 Meaning d1 Meaning Analog Input Control Terminal Ignored 2014 Sonarcana LLC Page 19 62 Highly Liquid MIDI CPU Firmware V 1 4 3 2 18 Logic Input Trigger Analog Continuous Note Stop If the control terminal specified by d0 is configured in Analog Input Continuous Note mode note generation halts mm d0 Meaning d1 Meaning 69h Analog Input Control Terminal Ignored 3 2 19 Logic Input Trigger Encoder Continuous Note Start If the control terminal pair specified by d0 is configured in Encoder Input
32. egister d7 and the result is stored in d0 No MIDI event is triggered mm d0 Meaning d1 Meaning 72h Sum Data Register Address Addend Data Register Address 3 2 25 Logic Input Trigger Data Register Copy Value The contents of register d is stored in register d0 No MIDI event is triggered d0 Meaning d1 Meaning To Data Register Address From Data Register Address 3 2 26 Logic Input Trigger Data Register Store Value The value specified by d is stored in the register specified by d0 No MIDI event is triggered mm d0 Meaning d1 Meaning 74h Data Register Address Value 3 2 27 Logic Input Trigger Data Register Clear Set Toggle Bit A bit in the register specified by d0 is cleared set or toggled when the control terminal input state changes No MIDI event is triggered The value of d specifies both the bit to be altered and whether the bit should be cleared set or toggled Values 00h 07h cause the bit numbered d to be cleared Values O8h OFh cause the bit numbered d 8 to be set Values 10h 17h cause the bit numbered d 16 to be toggled d1 Meaning Clear Set Toggle Bit d0 Meaning Data Register Address 2014 Sonarcana LLC Page 21 62 Highly Liquid MIDI CPU Firmware V 1 4 3 2 28 Logic Input Trigger Global Refresh For each control terminal the MIDI CPU generat
33. elect Mode causes the associated control terminal to periodically generate a matrix select output signal allowing the MIDI CPU to monitor the states of switches in a switch matrix Only certain control terminals can be configured as logic outputs see MIDI CPU Hardware User Manual TENT Modes with a negative pulse polarity generate OV pulses Data lines are automatically pulled up via the MIDI CPU on board pull up resistors Modes with a positive pulse polarity generate pulses of voltage Vreo For these modes Control Terminals 8 15 Pull Up Resistor must be disabled for any control terminals used for matrix data External pull down resistors must be added for the matrix data control terminals Due to ease of implementation negative pulse polarity is strongly recommended for applications where the user can choose the configuration of the switch matrix When a control terminal is configured in a Logic Output Matrix Select Mode the following select cycle will repeat continuously 1 Control terminal begins in a high impedance input state For positive pulse modes the terminals begins in an active low output state 2 A select pulse from the control terminal is initiated 3 The MIDI CPU takes a snapshot of the switch state data register associated with the mode 4 Control terminal returns to high impedance input state For positive pulse modes the terminals returns to an acti
34. es the MIDI output that would result from a change to the control terminal s current input state but does not alter the contents of any MIDI CPU data registers Use this mode to sync a downstream device to the current MIDI CPU state mm d0 Meaning d1 Meaning 7Dh Ignored Ignored 3 2 29 Logic Input Data Only The following mode configures the control terminal as a logic input The input state is available as Logic Input Data but no event is triggered by state changes mm d0 Meaning d1 Meaning 7Fh Ignored Ignored 2014 Sonarcana LLC Page 22 62 Highly Liquid MIDI CPU Firmware V 1 4 3 3 Logic Input Rotary Encoder Modes Logic Input Rotary Encoder Modes configure the control terminal specified by nn as a logic input For proper operation both control terminals in an encoder input pair must be given the same configuration See Table 2 2 3 a for a list of control terminal encoder input pairs When the attached rotary encoder is adjusted the value in the control terminal pair s corresponding data register is incremented or decremented The initial value upon power up for each data register is user configurable See Data Register Configuration 3 3 1 Encoder Input Continuous Note A continuous stream of MIDI notes is generated The encoder data register for the control terminal determines the note number of the current note Must be used in conjunction with modes Logic Input T
35. event is triggered mm d0 Meaning di Meaning OCh To Data Register Address From Data Register Address 3 4 8 Analog Input Data Register Store Value Whenever the analog input signal changes the value specified by d is stored in the register specified by d0 No MIDI event is triggered mm d0 Meaning d1 Meaning ODh Data Register Address Value 2014 Sonarcana LLC Page 27 62 Highly Liquid MIDI CPU Firmware V 1 4 3 4 9 Analog Input Data Register Clear Set Toggle Bit Whenever the analog input signal changes a bit in the register specified by d0 is cleared set or toggled No MIDI event is triggered The value of d specifies both the bit to be altered and whether the bit should be cleared set or toggled Values 00h 07h cause the bit numbered d to be cleared Values 08h 0Fh cause the bit numbered d1 8 to be set Values 10h 17h cause the bit numbered d 16 to be toggled mm d0 Meaning d1 Meaning OEh Data Register Address Clear Set Toggle Bit 3 4 10 Analog Input Data Only Analog input is converted to a 7 bit value and stored in the analog data register corresponding to the control terminal but no MIDI message is generated mm d0 Meaning d1 Meaning OFh Ignored Ignored 2014 Sonarcana LLC Page 28 62 Highly Liquid MIDI CPU Firmware V 1 4 3 5 Logic Output Matrix Select Modes A Logic Output Matrix S
36. g Tasks performed by the MIDI CPU and the resulting Data which is used to generate MIDI output 2 1 Tasks After power up and initialization the MIDI CPU continuously performs the following tasks MIDI Merge Matrix Select Signal Generation Control Input Monitoring MIDI Message Generation and LED Control 2 1 1 MIDI Merge Messages received by the MIDI CPU at the MIDI IN port are echoed in real time at the MIDI OUT port interspersed with any locally generated messages This allows the MIDI CPU to be combined with another MIDI controller or with additional MIDI CPU units to function as a single unit with a single MIDI OUT port All messages received by the MIDI CPU at the MIDI IN port are echoed at the MIDI OUT port with the exception of MIDI SysEx messages and MIDI Active Sense messages Active Sense messages are generated locally per the MIDI specification The MIDI CPU employs an efficient merge algorithm e Typical latency between an incoming message and the echoed output approaches the theoretical minimum of approximately 300 us e Merged messages and locally generated messages share the same running status when possible resulting in a compact output data stream e Merged messages preempt locally generated messages allowing successful processing of a saturated data stream 2 1 2 Matrix Select Signal Generation When configured as a matrix select output a MIDI CPU control terminal generates a matrix select l
37. hange CC message is generated when the control terminal input state changes The CC value alternates between the global CC on value and the global CC off value in Multipurpose Data registers 1Fh and 20h mm d0 Meaning di Meaning 56h Fixed CC number Ignored 57h Data register address for CC number Ignored 2014 Sonarcana LLC Page 16 62 Highly Liquid 3 2 6 Logic Input Trigger Program Change MIDI CPU Firmware V 1 4 A Program Change message is generated when the control terminal input state changes For modes 52h and 53h the program number is the result of adding the values specified by d0 and d1 mm d0 Meaning di Meaning 50h Fixed program number Ignored 5 h Data register address for program number Ignored Data register address for program 52h Fixed program number u nberaddsud 53h Data register address for program number Dias Er adoro Tot proe number addend 3 2 7 Logic Input Trigger Channel Pressure a Channel Pressure message is generated when the control terminal input state changes mm d0 Meaning dl Meaning 54h Fixed pressure value Ignored 55h Data register address for pressure value Ignored 3 2 8 Logic Input Trigger Pitch Wheel A Pitch Wheel message is generated when the control terminal input state changes Pitch Wheel messages contain 14 bits of position data The high order bits bits 13 thru 7 have a large impact on
38. he global CC off value in Multipurpose Data registers 1Fh and 20h mm Ps pal i d0 Meaning dl Meaning 34h 00h CC number for data bit 0 Matrix Data Bitmask 35h Olh CC number for data bit 0 Matrix Data Bitmask 36h 02h CC number for data bit 0 Matrix Data Bitmask 37h 01h CC number for data bit 0 Matrix Data Bitmask 3 5 4 Matrix Select Control Change CC Toggle When a switch state changes from high to low a Control Change message is generated CC number for each switch is determined by the value of d0 Switch state data register bit O generates messages with CC number d0 bit I generates messages with CC number d0 1 bit 2 generates messages with CC number d0 2 etc The CC value alternates between the global CC on value and the global CC off value in Multipurpose Data registers 1Fh and 20h mm a a D SRI d0 Meaning dl Meaning 38h 00h CC number for data bit 0 Matrix Data Bitmask 39h Olh CC number for data bit 0 Matrix Data Bitmask 3Ah 02h CC number for data bit 0 Matrix Data Bitmask 3Bh oi Olh CC number for data bit O Matrix Data Bitmask 2014 Sonarcana LLC Page 31 62 Highly Liquid MIDI CPU Firmware V 1 4 3 5 5 Matrix Select Program Change When a switch state changes from high to low a Program Change message is generated The program number for each switch is determined by the value of d0 Switch state d
39. ior of the register When rr 00h any attempted increase decrease to the register past the value mx mn will fail When rr 01h increases decreases past the value mx mn cause the value to wrap thru the minimum maximum values This value is ignored for analog input data registers Figure 4 3 1 Data Register Configuration SysEx Message Hex Header Register Configuration Footer 6 bytes Repeat as Desired 1 byte FO 00 01 5D 04 04 nn ii mn mx rr F7 2014 Sonarcana LLC Page 46 62 Highly Liquid MIDI CPU Firmware V 1 4 Figure 4 3 2 Factory Default Data Register Configuration SysEx Data Hex Meaning FO 00 01 5D 04 04 Header 03 10 00 00 7F 00 Analog Input Data register 03h thru 10h mn 0 mx 127 rr 0 11 1C 00 00 7F 00 Multipurpose Data register 11h thru 1Ch ii 0 mn 0 mx 127 rr 0 1D OF 00 OF 00 Configuration Layer Control Register 1Dh ii OFh 1E 7F 00 7F 00 Multipurpose Data register 1Eh matrix note velocity ii 127 mn 0 mx 127 rr 0 Multipurpose Data register 1Fh CC on value IF 7F 00 7F 00 EE LEU Multipurpose Data j 20 00 00 7F 00 Multipurpose Data register 20h CC off value ii 0 mn 0 mx 127 rr Q 21 28 00 00 7F 00 Multipurpose Data register 21h thru 28h ii 0 mn 0 mx 127 rr 0 29 00 00 28 00 Indirect Pointer register
40. ix Select Note Toggle Alternating Note On and Note Off messages are generated when a switch state changes from high to low The note number for each switch is determined by the value of d0 Switch state data register bit 0 generates messages with note number d0 bit 1 generates messages with note number d0 1 bit 2 generates messages with note number d0 2 etc Note numbers are subject to MIDI Number Remapping Note velocity is determined by the value in Multipurpose Data register 1Eh mm Hie gia Sere d0 Meaning di Meaning 30h 00h Note number for data bit 0 Matrix Data Bitmask 31h Olh Note number for data bit 0 Matrix Data Bitmask 32h 02h Note number for data bit 0 Matrix Data Bitmask 33h 01h Note number for data bit 0 Matrix Data Bitmask O 2014 Sonarcana LLC Page 30 62 Highly Liquid MIDI CPU Firmware V 1 4 3 5 3 Matrix Select Control Change CC On Off When a switch state changes a Control Change message is generated The CC number for each switch is determined by the value of d0 Switch state data register bit 0 generates messages with CC number d0 bit 1 generates messages with CC number d0 1 bit 2 generates messages with CC number d0 2 etc When a switch state changes from high to low the CC on value is used When a switch state changes state from low to high the CC off value is used CC on off values are determined by the global CC on value and t
41. ly Liquid MIDI CPU Firmware V 1 4 5 0 Configuration Retrieval At any time the current MIDI CPU configuration can be retrieved via SysEx Configuration Retrieval Messages When the MIDI CPU receives a SysEx Configuration Retrieval Message at its MIDI IN port it will output the associated configuration data in the form of a SysEx Configuration Message The format of each SysEx Configuration Retrieval message is shown in Table 5 a Table 5 a SysEx Configuration Retrieval Messages SysEx Configuration Retrieval Message Hex Resulting Output Control terminal configurations all terminals layer 00h Formatted as Control Terminal Configuration SysEx Message Control terminal configurations all terminals layer 01h Formatted as Control Terminal Configuration SysEx Message Control terminal configurations all terminals layer 02h Formatted as Control Terminal Configuration SysEx Message Control terminal configurations all terminals layer 03h Formatted as Control Terminal Configuration SysEx Message FO 00 01 5D 04 00 04 00 F7 Data Register Configuration SysEx Message FO 00 01 SD 04 00 01 00 F7 FO 00 01 SD 04 00 01 01 F7 FO 00 01 SD 04 00 01 02 F7 FO 00 01 SD 04 00 01 03 F7 FO 00 01 SD 04 00 05 00 F7 MIDI Number Remapping Table SysEx Message FO 00 01 5D 04 00 07 00 F7 SysEx Data Buffer Contents SysEx Message FO 00 01 SD 04 00 08 00 F7 ADC Configuration SysEx Message FO 00 01 5D 04
42. m d0 Meaning d1 Meaning 2Bh Ignored Ignored 3 6 2 LED Common Output The control terminal generates a common control signal for up to 8 LEDs arranged in either a common anode or common cathode configuration The data signal for each LED is automatically generated by control terminals configured for LED Data Output The contents of the data register at address d are formatted as specified by d0 Note Only control terminals 8 15 can be configured for LED common output mm d0 Meaning d1 Meaning 2Ah LED Output Format LED State Register 2014 Sonarcana LLC Page 34 62 Highly Liquid MIDI CPU Firmware V 1 4 3 6 3 LED Output Format LED common output mode employs an output format specified by the value of d0 The output format encodes all of the following The polarity of the attached LED array common anode or common cathode Whether or not the common signal is externally inverted The display type for the value in the LED state register When a common anode format is used the control terminal drives the anodes of up to 8 LEDs Each LED cathode must be connected to a different MIDI CPU control terminal configured for LED Data Output When a common cathode format is used the control terminal drives the cathodes of up to 8 LEDs Each LED anode must be connected to a different MIDI CPU control terminal configured for LED Data Output Because of the electrical limitati
43. ncremented by the value dl When counter clockwise input is received from the encoder the register specified by d0 is decremented by the value d No MIDI event is triggered mm 1Ah d0 Meaning d1 Meaning Data Register Address Increment Decrement Value 3 3 6 Encoder Input Data Register Copy Value The contents of register d is stored in register d0 when input is received from the encoder No MIDI event is triggered mm 1Ch d0 Meaning To Data Register Address d1 Meaning From Data Register Address 3 3 7 Encoder Input Data Register Store Value The value specified by d is stored in the register specified by d0 when input is received from the encoder No MIDI event is triggered mm d0 Meaning d1 Meaning 1Dh Data Register Address Value 2014 Sonarcana LLC Page 24 62 Highly Liquid MIDI CPU Firmware V 1 4 3 3 8 Encoder Input Data Register Clear Set Toggle Bit A bit in the register specified by d0 is cleared set or toggled when input is received from the encoder No MIDI event is triggered The value of d specifies both the bit to be altered and whether the bit should be cleared set or toggled Values 00h 07h cause the bit numbered d to be cleared Values 08h 0Fh cause the bit numbered d1 8 to be set Values 10h 17h cause the bit numbered d 16 to be toggled mm d0 Meaning d1 Meaning 1Eh Data Registe
44. nformation related to individual control terminals Global Configuration messages contain information related to the MIDI CPU as a whole Configuration Examples and Technical Support are provided and may be adapted for specific applications SysEx messages can also be used to examine the current MIDI CPU configuration See Configuration Retrieval 1 2 About This Document Throughout this document SysEx message contents are shown in hexadecimal format Hexadecimal numbers either are described as hex or are followed by the h suffix Decimal format should be assumed for all other numbers Key to character formatting e Clickable links to tables and figures appear in blue e Clickable links to sections within the document are underscored e Names of specific MIDI message types generated by the MIDI CPU appear in red Sections of the manual that have changed significantly since the previous firmware version are highlighted in yellow 1 3 Additional Resources Instructions for using a PC to create and send SysEx messages can be found at http highlyliquid com support library midi sysex html Support inquiries should be posted at the Highly Liquid support forums Project examples and other information is posted at the forums http forum highlyliquid com 2014 Sonarcana LLC Page 5 62 Highly Liquid MIDI CPU Firmware V 1 4 2 0 Theory of Operation MIDI CPU functionality can be understood in terms of automatically repeatin
45. nput Trigger Note On Note 71 Velocity 127 0B 01 44 00 47 00 ecce nl L P 0 Velocity 0 Note Off OC 00 44 00 48 7F Control Terminal 12 Logic Input Trigger Transition High to Low Note On Note 72 Velocity 127 OC 01 44 00 48 00 Control Terminal 12 Logic Input Trigger Transition Low to High Note On Note 72 Velocity 0 Velocity 0 Note Off OD 00 44 00 49 7F Control Terminal 13 Logic Input Trigger Transition High to Low Note On Note 73 Velocity 127 OD 01 44 00 49 00 Control Terminal 13 Logic Input Trigger Transition Low to High Note On Note 73 Velocity 0 Velocity 0 Note Off OE 00 44 00 4A 7F Control Terminal 14 Logic Input Trigger Transition High to Low Note On Note 74 Velocity 127 OE 01 44 00 4A 00 Control Terminal 14 Logic Input Trigger Transition Low to High Note On Note 74 Velocity 0 Velocity 0 Note Off OF 00 44 00 4B 7F Control Terminal 15 Logic Input Trigger Transition High to Low Note On Note 75 Velocity 127 OF 01 44 00 4B 00 Control Terminal 15 Transition Low to High Logic Input Trigger Note On Note 75 Velocity 0 Velocity 0 Note Off O 2014 Sonarcana LLC Page 42 62 Highly Liquid MIDI CPU Firmware V 1 4 Figure 3 7 3 Factory Default Control Terminal Configuration Layer 00h Part 3 of 3 SysEx Data Hex Meaning 1000 44
46. ogic signal Matrix select outputs are used together with logic inputs in order to monitor a switch matrix 2 1 3 Control Input Monitoring The MIDI CPU continuously monitors each control terminal configured as an analog or logic input Each input signal is used in up to two ways e The current value of the input updated in real time can be incorporated into outbound MIDI messages See Data e Achange to the input state can trigger the generation of a MIDI message 2 1 4 MIDI Message Generation The MIDI CPU generates MIDI messages based on user configuration Message generation is triggered by changes to control terminal input See Control Terminal Configuration and Global Configuration Data acquired during operation can be incorporated into the generated messages See Data 2014 Sonarcana LLC Page 6 62 Highly Liquid MIDI CPU Firmware V 1 4 2 1 5 LED Control In addition to the built in and optional remote Activity LED the MIDI CPU can control multiple matrixed indicator LEDs and or 7 segment LED displays See MIDI CPU Hardware User Manual for wiring information See Logic Output LED Control Modes for more details 2 2 Data The MIDI CPU has several internal memory locations called data registers that contain real time data from control terminal inputs or that control some aspect of MIDI CPU behavior Each data register contains up to a single byte 8 bits and is identified by a unique hex address When the MIDI CPU gene
47. on Inverted Hundreds Column 07h Cathode Inverted 08h Anode Non Inverted 09h Anode Invetted Unsigned 7 Segment Display 00h 0 OAh Cathode Non Inverted Tens Column OBh Cathode Inverted OCh Anode Non Inverted ODh Anode inverted Unsigned 7 Segment Display 00h 0 OEh Cathode Non Inverted Ones Column OFh Cathode Inverted 10h Anode Non Inverted 11h Anode Inverted Bar Graph ar Grap 12h Cathode Non Inverted 13h Cathode Inverted 14h Anode Non Inverted 15h Anode Inverted Signed 7 Segment Display 40h 0 16h Cathode Non Inverted Sign Column 17h Cathode Inverted 18h Anode Non Inverted 19h Anode Inverted Signed 7 Segment Display 40h 0 1Ah Cathode Non Inverted Tens Column 1Bh Cathode Inverted 1Ch Anode Non Inverted 1Dh Anode Inverted Signed 7 Segment Display 40h 0 1Eh Cathode Non Inverted Ones Column 1Fh Cathode Inverted 2014 Sonarcana LLC Highly Liquid MIDI CPU Firmware V 1 4 Table 3 6 3 c LED Common Output Formats Part 2 of 2 d0 Common Display Type 20h Anode Non Inverted 21h Anode Inverted T 3 Bit Indication 22h Cathode Non Inverted 23h Cathode Inverted 24h Anode Non Inverted 25h ere Unsigned 7 Segment Display 00h 1 26h Cathode Non Inverted unir de Comin 27h Cathode Inverted 28h Anode Non Inverted 29h Anode Inverted Unsigned 7 Segment Display 00h 1
48. ons of the MIDI CPU LED common output signals may be externally buffered by the user Inverted common output formats are available for applications where inverting buffering methods are employed The following LED display types are available 8 Bit Indication The state of each LED reflects the corresponding bit in the LED state register 1 on 0 off 3 Bit Indication The 3 lowest order bits in the LED state register are treated as an integer The LED matching the integer is illuminated Unsigned 7 Segment Display 00h 0 The LED state register value is interpreted as an integer Use these formats to display an unsigned value between 0 and 127 Unsigned 7 Segment Display 00h 1 The LED state register value is interpreted as an integer Use these formats to display an unsigned value between and 128 Unsigned 7 Segment Display hex The LED state register value is interpreted as an integer Use these formats to display an unsigned hex value between 00h and 7Fh Signed 7 Segment Display 40h 0 The LED state register value is interpreted as an integer Use these formats to display a signed value between 64 and 63 Bar Graph The LED state register value is interpreted as an integer When the state register value is 0 only LEDO is illuminated Each increase of 16 to the state register value causes the illumination of an additional LED The LED state summary for each display type is shown in Table 3 6
49. or for a single MIDI CPU control terminal The configuration of control terminals not specified in the message will remain unchanged When the MIDI CPU configuration is updated via a MIDI SysEx message the device will reset followed by the LED self test If no LED activity is observed then the attempted configuration was unsuccessful Figure 3 1 1 Control Terminal Configuration SysEx Message Format Hex Header Layer Configuration Chunk Footer 6 bytes 1 byte repeat as desired 1 byte FO 00 01 5D 04 01 yy nn tt mm ch do dl F7 3 1 1 Layer yy Configuration layers allow a single control terminal to be associated with multiple functions Use of multiple layers is optional and can vary by control terminal There are 4 control terminal configuration layers Valid values for yy are 00h O1h 02h or 03h A control terminal s layer 00h configuration directs its initialization at power up Configuration layers O1h O3h if used must specify the same category of operation logic input analog input matrix select output or LED common output as layer 00h Specify Logic Input Data Only mode for configuration layers which are not needed During operation the MIDI CPU will attempt to execute the configuration for each layer 00h 03h in sequence ignoring any configuration layers disabled via the Configuration Layer Control Register 3 1 2 Control Terminal Identifier nn Parameter nn specifies the
50. or for each register is user configurable See Data Register Configuration Table 2 2 3 a Multipurpose Data Registers 11h 1Ch Primary Function er Primary Function lh Encoder data control terminals 0 1 12h Encoder data control terminals 2 3 13h Encoder data control terminals 4 5 14h Encoder data control terminals 6 7 15h Encoder data control terminals 8 9 16h Encoder data control terminals 10 11 17h Encoder data control terminals 12 13 18h Encoder data control terminals 14 15 19h Encoder data control terminals 16 17 1Ah Encoder data control terminals 18 19 1Bh Encoder data control terminals 20 21 1Ch Encoder data control terminals 22 23 2014 Sonarcana LLC Page 9 62 Highly Liquid MIDI CPU Firmware V 1 4 Table 2 2 3 b Multipurpose Data Registers 1Eh 20h Primary Function Register Address Primary Function 1Eh Note velocity for modes Matrix Select Note On Note Off and Matrix Select Note Toggle 1Fh CC on value for modes Logic Input Trigger Control Change CC Toggle Matrix Select Control Change CC On Off and Matrix Select Control Change CC Toggle 20h CC off value for modes Logic Input Trigger Control Change CC Toggle Matrix Select Control Change CC On Off and Matrix Select Control Change CC Toggle Table 2 2 3 c Multipurpose Data Registers 21h 28h Primary Function Register
51. pitch change and the low order bits bits 6 thru 0 have a small impact For mm 5Ah it is recommended that d0 00h mm d0 Meaning di Meaning 58h Fixed value for position bits 6 0 Fixed value for position bits 13 7 59h Data register address for position bits 6 0 Fixed value for position bits 13 7 5Ah Fixed value for position bits 6 0 Data register address for position bits 13 7 5Bh Data register address for position bits 6 0 Data register address for position bits 13 7 O 2014 Sonarcana LLC Page 17 62 Highly Liquid MIDI CPU Firmware V 1 4 3 2 9 Logic Input Trigger System Exclusive SysEx An arbitrary complete SysEx message is generated when the control terminal input state changes The generated SysEx message consists of the standard SysEx Begin status byte FOh followed by data from the SysEx Data Buffer as specified by d0 amp d1 and closed with the standard SysEx End status byte F7h mm d0 Meaning d1 Meaning 5Ch SysEx buffer starting address Data length bytes 3 2 10 Logic Input Trigger SysEx Begin Fragment The beginning fragment of an arbitrary SysEx message is generated when the control terminal input state changes The generated SysEx fragment consists of the standard SysEx Begin status byte FOh followed by data from the SysEx Data Buffer as specified by d0 amp di The fragment must be followed by raw data via Logic Input Trigger SysEx
52. r Address Clear Set Toggle Bit 3 3 9 Encoder Input Data Only When input from the rotary encoder is received the value in the corresponding data register is adjusted but no MIDI message is generated mm d0 Meaning d1 Meaning 1Fh Ignored Ignored 2014 Sonarcana LLC Page 25 62 Highly Liquid MIDI CPU Firmware V 1 4 3 4 Analog Input Modes Analog Input Modes configure the control terminal specified by mn as an analog input Changes to input state may trigger MIDI output or other events Only certain control terminals can be configured as analog inputs see MIDI CPU Hardware User Manual 3 4 1 Analog Input Continuous Note A continuous stream of MIDI notes is generated The analog data register for the control terminal determines the note number of the current note Must be used in conjunction with modes Logic Input Trigger Analog Continuous Note Start and Logic Input Trigger Analog Continuous Note Stop If note generation has begun change to the analog input simultaneously causes the previous MIDI note to be canceled with a Note Off message and a new note to be initiated with a Note On message Note numbers are subject to MIDI Number Remapping mm d0 Meaning d1 Meaning 00h Ignored Fixed note velocity Olh Ignored Data register address for velocity 3 4 2 Analog Input Aftertouch Change to the analog input signal causes an Aftertouch message to
53. rates a MIDI message information in the message note number amp velocity CC number amp value program number etc can be formed from fixed values and or the contents of data registers Each data register is described below Control Terminal Configuration and Global Configuration determine how the MIDI CPU uses the data registers 2 2 1 Logic Input Data Logic input data registers contain the current states of any control terminals configured as logic inputs See Table 2 2 1 a If the control terminal input state is low OV or grounded the corresponding data register bit is 0 If the control terminal input state is high V reg or unconnected the corresponding bit is l For a control terminal not configured as a logic input the value of the corresponding logic input data register bit is unknown Table 2 2 1 a Logic Input Data Registers Register Control Terminal Address Bit7 Bit6 Bit5 Bit4 Bit3 Bit2 Bit1 Bito 00h 7 6 5 4 3 2 1 0 Olh 15 14 13 12 11 10 9 8 02h 23 22 21 20 19 18 17 16 2014 Sonarcana LLC Page 7 62 Highly Liquid MIDI CPU Firmware V 1 4 2 2 2 Analog Input Data Each analog input data register contains a 7 bit representation of the input voltage on the corresponding control terminal See Table 2 2 2 a For a control terminal not configured as an analog input the corresponding analog input data register contains the value 0x7F
54. rigger Encoder Continuous Note Start and Logic Input Trigger Encoder Continuous Note Stop If note generation has begun input from the rotary encoder simultaneously causes the previous MIDI note to be canceled with a Note Off message and a new note to be initiated with a Note On message Note numbers are subject to MIDI Number Remapping mm d0 Meaning d1 Meaning 10h Ignored Fixed note velocity 11h Ignored Data register address for note velocity 3 3 2 Encoder Input Control Change CC A Control Change message is generated when input is received from the rotary encoder mm d0 Meaning d1 Meaning 14h Fixed CC number Data register address for CC value 15h Data register address for CC number Data register address for CC value 3 3 3 Encoder Input Program Change A Program Change message is generated when input is received from the rotary encoder mm d0 Meaning d1 Meaning 16h Data register address for program number Ignored 2014 Sonarcana LLC Page 23 62 Highly Liquid MIDI CPU Firmware V 1 4 3 3 4 Encoder Input Channel Pressure A Channel Pressure message is generated when input is received from the rotary encoder d0 Meaning Data register address for pressure value d1 Meaning Ignored 3 3 5 Encoder Input Data Register Increment Decrement When clockwise input is received from the encoder the register specified by d0 is i
55. t Program Change 23 3 3 4 Encoder Input Channel Pressure ses 24 3 3 5 Encoder Input Data Register Increment Decrement ss 24 3 3 6 Encoder Input Data Register Copy Value 24 3 3 7 Encoder Input Data Register Store Value 24 3 3 8 Encoder Input Data Register Clear Set Toggle Bit 25 3 3 9 Encoder Input Data Only iene 25 3 4 Analog Input Modes 20 3 4 1 Analog Input Continuous Note 26 342 Analog Input Aftertouchi 18 o etcetera e t teta ee t bem dete dens 26 3 4 3 Analog Input Control Change CC RA RA Re RR AA Re Re Re Re nre 26 34 4 Analog Input Program Changes sua ent DE te eme De e iq ve e Gee Ea 27 3 4 5 Analog Input Channel Pressure 27 3 4 6 Analog Input Pitch Wheel cies seer eet ette ee deste ie Ie ELS E Pe dee gede gee 27 3 4 7 Analog Input Data Register Copy Value 27 3 4 8 Analog Input Data Register Store Value 27 3 4 9 Analog Input Data Register Clear Set Toggle Bit 28 3 4 10 Analog Input Data Only cce eee eet eti ee He e d ter eene RS 28 3 5 Logic Output Matrix Select Modes reseseresesenesesevesesavenennvevennvneeenenereneserenererenererenerereveserererse 29 3 5 1 Matrix Select Note On Note O eiae hd dh ar ee i epi te ali 30 3 5 2 Matrix Selecti Note Togole 3 iocos pe Oei etis tiae eee A deis 30 3 5 3 Matrix Select Control Change CC On Off nnne enne nnne 31 3 5 4 Matrix Select Control Chang
56. tet de RA GE Ga og oe de ee oe ee Ee Ya PORE teste S 54 4 9 Control Terminals 8 15 Pull Up Resistor csssccccssssssscssssssscsssssscsssssssccscssssscsscssssscsssssees 55 4 10 MIDI Messaging Throttle 2i mansa ESE es sed ee AE NG des de Ge Ferd dao SR Dee adaga 56 5 0 Configuration Esta MO EE IE OR nia 6 0 MIDI Channel Selection Jumpet sssscscssssssssccccccsccccccccccccccscsscsssccsscssscscsssssssss DO 7 0 Activity Indicator EED SIG GES RE GR GE Ee ARS AE ERY 8 0 Firmware UpQdte a Ee OE Ee ee ee D 8 1 Firmware Update Procedure ateis sesse iaia 60 8 2 Tree LE 60 8 3 Firmware Version SysEx Message ccscccssssssccsssssssccssssssccessssscccssssssccssssssscsessssssssscccesssees 61 9 0 Configuration Examples and Technical Support e eese e e eee eee eee e ee eee eee esses e s OD 2014 Sonarcana LLC Page 4 62 Highly Liquid MIDI CPU Firmware V 1 4 1 0 Overview Users are encouraged to read MIDI CPU Hardware User Manual before continuing with this document 1 1 About The MIDI CPU The MIDI CPU is a multipurpose MIDI input output device The MIDI CPU accepts input at the control terminals and MIDI IN port Output is generated at the MIDI OUT port Depending on configuration certain control terminals may also generate output signals See Theory of Operation for more information The MIDI CPU is configured via MIDI System Exclusive SysEx message Control Terminal Configuration messages contain i
57. the analog to digital conversion process These voltages called V gg and Veer represent the analog voltages that are converted to the digital values 00h and 7Fh respectively The MIDI CPU can use its own voltage regulator to supply the reference voltages or it can use external reference voltages connected by the user External reference voltages can be useful when e Lower noise analog to digital conversion is required e The analog input signal does not span the entire range between MIDI CPU ground and V rec When rr is set to 00h the MIDI CPU will use its on board ground as Vrer and its on board Vreg as VREF When rr is set to 01h the MIDI CPU will use the external Vrer and Vrer connected by the user to control terminals 18 and 19 See MIDI CPU Hardware User Manual for external reference voltage wiring diagrams and for additional details regarding Vrec Regardless of the reference voltages used analog input voltages must not exceed the limits described in MIDI CPU Hardware User Manual Figure 4 7 3 1 Factory Default ADC Configuration SysEx Data Hex Meaning FO 00 01 SD 04 08 06 04 00 F7 Analog Input Threshold 6 Analog Input Smoothing 4 Reference Voltage On Board 2014 Sonarcana LLC Page 53 62 Highly Liquid 4 8 Active Sense On Off MIDI CPU Firmware V 1 4 During periods of inactivity a MIDI device can send Active Sense messages to notify the receiving device that th
58. ue of this register use the Data Register Configuration SysEx message 4 2 Control Change CC On Off Values The CC value of messages generated by control terminal modes Logic Input Trigger Control Change CC Toggle Matrix Select Control Change CC On Off and Matrix Select Control Change CC Toggle is determined by the value of Multipurpose Data registers 1Fh and 20h To change the power up value of these registers use the Data Register Configuration SysEx message 2014 Sonarcana LLC Page 45 62 Highly Liquid MIDI CPU Firmware V 1 4 4 3 Data Register Configuration Analog Input Data registers Multipurpose Data registers Configuration Layer Control Register and Indirect Pointer register have several user configurable characteristics that can be changed via the MIDI SysEx message described in Figure 4 3 1 Value nn corresponds to data register address The valid range for nn is 03h 29h Value ii sets the initial value for the register at power up This value is ignored for analog input data registers Values mn and mx determine the minimum and maximum values for the register For a given register minimum and maximum values are only enforced when e An analog signal is converted to a digital value and stored in the register Encoder input increments or decrements the value register value Increment decrement or sum operations modify the register value Value rr specifies the round robin behav
59. uration Update Indication When the MIDI CPU configuration is updated via a MIDI SysEx message the device will reset followed by the LED self test If no LED activity is observed then the attempted configuration was unsuccessful MIDI Activity Indication The LED blinks when locally generated or merged MIDI events are sent via the MIDI CPU MIDI Out port Firmware Update Mode Indication The LED will remain lighted while the MIDI CPU awaits a firmware update SysEx message Firmware Update Error The LED blinks continuously when the receipt of a firmware update SysEx message has failed or when the firmware has become corrupt 2014 Sonarcana LLC Page 59 62 Highly Liquid MIDI CPU Firmware V 1 4 8 0 Firmware Update MIDI CPU firmware can be upgraded via MIDI SysEx message Firmware update files when available can be downloaded from http highlyliquid com midi cpu 8 1 Firmware Update Procedure 1 Download and unzip the firmware update SysEx message The resulting file should have the extension syx 2 Disconnect power to the MIDI CPU 3 Connect the CAL L terminal to ground 4 Re connect power to the MIDI CPU The Activity LED will remain lighted 5 Send the firmware update SysEx message to the MIDI CPU Transmission of the message may require several seconds 6 Upon completion of the update the Activity LED will deactivate 7 Disconnect the CAL L terminal 8 Disconnect power to th
60. vated via SysEx message See Figure 4 5 1 and Table 4 5 a Figure 4 5 1 MIDI Number Remapping Flags SysEx Message Hex Header Remap Flags Footer 6 bytes 1 byte 1 byte FO 00 01 5D 04 0A df F7 Table 4 5 a MIDI Number Remapping Flags Hex Values Sf Hex Program Remap CC Remap Note Remap 00 off off off 01 off off on 02 off on off 03 off on on 04 on off off 05 on off on 06 on on off 07 on on on When the MIDI CPU generates a message type for which remapping is active the note CC or program number resulting from control terminal configuration is used as a look up address for the MIDI Number Remap Table The value contained in the table at that address is substituted for the note CC or program number in the outgoing message By default each value within the table is equal to its address therefore no remapping takes place Values in the table may be updated via SysEx as described in Figure 4 5 2 The SysEx message includes the remap value for each MIDI number in order from numbers 0 to 127 To return the MIDI Number Remap Table to its default no remap state use the SysEx message described in Figure 4 5 3 2014 Sonarcana LLC Page 49 62 Highly Liquid MIDI CPU Firmware V 1 4 Figure 4 5 2 MIDI Number Remapping Table SysEx Message Hex Header MIDI Number Remap Table Contents Footer 6 bytes 128 bytes 1 byte FO 00 01 5D 04
61. ve low output state 5 The Matrix Data Bitmask is applied to the snapshot 6 MIDI messages are generated according to any changed switch states 7 The output remains inactive high impedance while select pulses are generated by other matrix select control terminals 8 Cycle repeats with step 1 The frequency of the select cycle or matrix sampling rate varies depending on MIDI CPU configuration and input activity The typical rate approaches 1 000 select cycles per second 2014 Sonarcana LLC Page 29 62 Highly Liquid MIDI CPU Firmware V 1 4 3 5 1 Matrix Select Note On Note Off When a switch state changes from high to low a Note On message is generated When a switch state changes from low to high a Note Off message is generated The note number for each switch is determined by the value of d0 Switch state data register bit 0 generates messages with note number d0 bit 1 generates messages with note number d0 1 bit 2 generates messages with note number d0 2 etc Note numbers are subject to MIDI Number Remapping Note velocity is determined by the value in Multipurpose Data register 1 Eh mm Pls A edid d0 Meaning dl Meaning 2Ch 00h Note number for data bit 0 Matrix Data Bitmask 2Dh Olh Note number for data bit 0 Matrix Data Bitmask 2Eh 02h Note number for data bit 0 Matrix Data Bitmask 2Fh 01h Note number for data bit 0 Matrix Data Bitmask 3 5 2 Matr

MIDI CPU Firmware Version 1.4 User Manual

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