Moved protocol stuff into comproto.asm.
This commit is contained in:
Martin Preuss
382
avr/comproto.asm
Normal file
382
avr/comproto.asm
Normal file
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; ***************************************************************************
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; defines
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.equ CPRO_CMD_PING = 10
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.equ CPRO_CMD_PONG = 11
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.equ CPRO_CMD_COMSENDSTATS = 20
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.equ CPRO_CMD_COMRECVSTATS = 21
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.equ CPRO_CMD_I2CBUSMEMBER = 30
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.equ CPRO_CMD_DEBUG = 40
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.equ CPRO_CMD_VALUE = 50
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.equ CPRO_CMD_NEED_ADDRESS = 60
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.equ CPRO_CMD_HAVE_ADDRESS = 61
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; ***************************************************************************
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; data
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.dseg
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; ***************************************************************************
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; code
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.cseg
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; ---------------------------------------------------------------------------
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; Enqueue a PING packet.
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;
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; IN:
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; - R16: destination address
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; OUT:
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; - CFLAG: set if okay, clear otherwise
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; MODIFIED REGS: R18, R20 (R15, R16, R17, X, Y)
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CPRO_EnqueuePing:
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ldi r18, CPRO_CMD_PING
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ldi r20, COM_BUFFER_PRIO_INFO
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rjmp cproEnqueueMsgWithCmdAndSrcAddr
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; ---------------------------------------------------------------------------
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; Enqueue a PONG packet.
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;
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; IN:
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; - R16: destination address
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; OUT:
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; - CFLAG: set if okay, clear otherwise
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; MODIFIED REGS: R18, R20 (R15, R16, R17, X, Y)
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CPRO_EnqueuePong:
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ldi r18, CPRO_CMD_PONG
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ldi r20, COM_BUFFER_PRIO_INFO
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rjmp cproEnqueueMsgWithCmdAndSrcAddr
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; ---------------------------------------------------------------------------
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; Enqueue a COM Send stats packet.
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;
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; IN:
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; - R16: destination address
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; OUT:
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; - CFLAG: set if okay, clear otherwise
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; MODIFIED REGS: R16, R17, R20, X (R15, Y)
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CPRO_EnqueueComSendStats:
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push r15
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in r15, SREG
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cli
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push r16
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rcall COM_AllocBufferAndGetXY ; (r16, r17, r21)
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pop r16
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brcc CPRO_EnqueueComSendStats_error
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clr r17 ; r17: XOR byte
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; write header (dest address, msg length)
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st X+, r16 ; destination address
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eor r17, r16
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ldi r16, 12 ; 8 bytes payload
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st X+, r16
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eor r17, r16
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; write payload
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ldi r16, CPRO_CMD_COMSENDSTATS ; 0: cmd
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st X+, r16
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eor r17, r16
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lds r16, comAddress ; 1: src addr
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st X+, r16
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eor r17, r16
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lds r16, timerModuleCounterSecs ; 2-5: current seconds counter
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st X+, r16
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eor r17, r16
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lds r16, timerModuleCounterSecs+1
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st X+, r16
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eor r17, r16
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lds r16, timerModuleCounterSecs+2
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st X+, r16
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eor r17, r16
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lds r16, timerModuleCounterSecs+3
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st X+, r16
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eor r17, r16
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lds r16, comStatsPacketsOut ; 6: packets out
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st X+, r16
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eor r17, r16
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lds r16, comStatsPacketsOut+1
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st X+, r16
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eor r17, r16
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lds r16, comStatsCollisions ; 8: collisions
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st X+, r16
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eor r17, r16
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lds r16, comStatsCollisions+1
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st X+, r16
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eor r17, r16
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lds r16, comStatsAborted ; 10: aborted
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st X+, r16
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eor r17, r16
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lds r16, comStatsAborted+1
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st X+, r16
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eor r17, r16
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; store XOR byte
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st X+, r17
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; mark buffer as enqueued with PRIO "info" (limited amount of retries)
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ldi r20, COM_BUFFER_PRIO_INFO
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rcall COM_EnqueuePacket ; (R15, R16)
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brcc CPRO_EnqueueComSendStats_error
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pop r15
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out SREG, r15
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sec
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ret
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CPRO_EnqueueComSendStats_error:
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pop r15
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out SREG, r15
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clc
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ret
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; ---------------------------------------------------------------------------
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; Enqueue a I2C Bus Member packet.
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;
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; IN:
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; - R16: destination address
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; - R1 : Address of the bus member
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; - R2 : availability (0=not available, 1=available)
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; OUT:
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; - CFLAG: set if okay, clear otherwise
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; MODIFIED REGS: R16, R17, R20, X (R15, Y)
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CPRO_EnqueueI2cBusMember:
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push r16
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rcall COM_AllocBufferAndGetXY ; (r16, r17, r21)
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pop r16
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brcc CPRO_EnqueueI2cBusMember_error
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clr r17 ; r17: XOR byte
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; write header (dest address, msg length)
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st X+, r16 ; destination address
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eor r17, r16
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ldi r16, 4 ; 4 bytes payload
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st X+, r16
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eor r17, r16
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; write payload
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ldi r16, CPRO_CMD_I2CBUSMEMBER ; send command
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st X+, r16
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eor r17, r16
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lds r16, comAddress ; send source address
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st X+, r16
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eor r17, r16
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mov r16, r1 ; send i2c bus member address
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st X+, r16
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eor r17, r16
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mov r16, r2 ; send i2c bus member availability
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st X+, r16
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eor r17, r16
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; store XOR byte
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st X+, r17
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; mark buffer as enqueued with PRIO "info" (limited amount of retries)
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ldi r20, COM_BUFFER_PRIO_INFO
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rcall COM_EnqueuePacket ; (R15, R16)
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brcc CPRO_EnqueueI2cBusMember_error
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sec
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ret
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CPRO_EnqueueI2cBusMember_error:
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clc
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ret
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; ---------------------------------------------------------------------------
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; Enqueue a DEBUG packet.
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;
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; IN:
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; - R16: destination address
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; - R1: debug value 1
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; - R2: debug value 2
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; OUT:
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; - CFLAG: set if okay, clear otherwise
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; MODIFIED REGS: R16, R17, R20, X (R15, Y)
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CPRO_EnqueueDebug:
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push r16
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rcall COM_AllocBufferAndGetXY ; (r16, r17, r21)
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pop r16
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brcc CPRO_EnqueueDebug_error
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clr r17 ; r17: XOR byte
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; write header (dest address, msg length)
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st X+, r16 ; destination address
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eor r17, r16
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ldi r16, 4 ; 2 bytes payload
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st X+, r16
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eor r17, r16
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; write payload
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ldi r16, CPRO_CMD_DEBUG
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st X+, r16
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eor r17, r16
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lds r16, comAddress
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st X+, r16
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eor r17, r16
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mov r16, r1 ; debug 1
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st X+, r16
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eor r17, r16
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mov r16, r2 ; debug 2
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st X+, r16
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eor r17, r16
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; store XOR byte
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st X+, r17
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; mark buffer as enqueued with PRIO "info" (limited amount of retries)
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ldi r20, COM_BUFFER_PRIO_INFO
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rcall COM_EnqueuePacket ; (R15, R16)
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brcc CPRO_EnqueueDebug_error
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sec
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ret
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CPRO_EnqueueDebug_error:
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clc
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ret
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; ---------------------------------------------------------------------------
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; Enqueue a VALUE packet.
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;
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; IN:
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; - R16: destination address
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; - R17: value id
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; - R19:R18: value
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; - R21:R20: denom (e.g. 100, meaning value must be divided by 100)
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; - R22: value type
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; OUT:
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; - CFLAG: set if okay, clear otherwise
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; MODIFIED REGS:
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CPRO_EnqueueValue:
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push r16
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push r17
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push r21
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rcall COM_AllocBufferAndGetXY ; (r16, r17, r21)
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pop r21
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pop r17
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pop r16
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brcc CPRO_EnqueueValue_error
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clr r1 ; r1: XOR byte
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; write header (dest address, msg length)
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st X+, r16 ; destination address
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eor r1, r16
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ldi r16, 12 ; 12 bytes payload
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st X+, r16 ; msglen
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eor r1, r16
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; write payload
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ldi r16, CPRO_CMD_VALUE ; 0: msg type
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st X+, r16
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eor r1, r16
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lds r16, comAddress ; 1: source address
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st X+, r16
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eor r1, r16
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lds r16, timerModuleCounterSecs ; 2-5: current seconds counter
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st X+, r16
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eor r1, r16
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lds r16, timerModuleCounterSecs+1
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st X+, r16
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eor r1, r16
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lds r16, timerModuleCounterSecs+2
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st X+, r16
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eor r1, r16
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lds r16, timerModuleCounterSecs+3
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st X+, r16
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eor r1, r16
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st X+, r17 ; 6: value id
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eor r1, r17
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st X+, r22 ; 7: value type
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eor r1, r22
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st X+, r18 ; 8: low value
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eor r1, r18
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st X+, r19 ; 9: high value
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eor r1, r19
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st X+, r20 ; 10: low denom
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eor r1, r20
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st X+, r21 ; 11: high denom
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eor r1, r21
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; store XOR byte
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mov r16, r1
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st X+, r16
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; mark buffer as enqueued with PRIO "normal" (slightly limited number of retries)
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ldi r20, COM_BUFFER_PRIO_NORMAL
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rcall COM_EnqueuePacket ; (R15, R16)
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brcc CPRO_EnqueueValue_error
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sec
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ret
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CPRO_EnqueueValue_error:
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clc
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ret
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; ---------------------------------------------------------------------------
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; Enqueue a simple packet with payload only CMD and source address.
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;
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; IN:
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; - R16: destination address
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; - R18: command (e.g. CPRO_CMD_PING or CPRO_CMD_PONG)
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; - R20: priority of the message
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; OUT:
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; - CFLAG: set if okay, clear otherwise
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; MODIFIED REGS: R16, R17, R20, X (R15, Y)
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cproEnqueueMsgWithCmdAndSrcAddr:
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push r16
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rcall COM_AllocBufferAndGetXY ; (r16, r17, r21)
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pop r16
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brcc cproEnqueueMsgWithCmdAndSrcAddr_error
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clr r17 ; r17: XOR byte
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; write header (dest address, msg length)
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st X+, r16 ; destination address
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eor r17, r16
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ldi r16, 6 ; 6 bytes payload
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st X+, r16
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eor r17, r16
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; write payload
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mov r16, r18 ; 0: CMD
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st X+, r16
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eor r17, r16
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lds r16, comAddress ; 1: source address
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st X+, r16
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eor r17, r16
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lds r16, timerModuleCounterSecs ; 2-5: current seconds counter
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st X+, r16
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eor r17, r16
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lds r16, timerModuleCounterSecs+1
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st X+, r16
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eor r17, r16
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lds r16, timerModuleCounterSecs+2
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st X+, r16
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eor r17, r16
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lds r16, timerModuleCounterSecs+3
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st X+, r16
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eor r17, r16
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; store XOR byte
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st X+, r17
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; mark buffer as enqueued with PRIO "info" (limited amount of retries)
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rcall COM_EnqueuePacket ; (R15, R16)
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brcc cproEnqueueMsgWithCmdAndSrcAddr_error
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sec
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ret
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cproEnqueueMsgWithCmdAndSrcAddr_error:
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clc
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ret
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