658 lines
17 KiB
NASM
658 lines
17 KiB
NASM
; ***************************************************************************
|
|
; copyright : (C) 2025 by Martin Preuss
|
|
; email : martin@libchipcard.de
|
|
;
|
|
; ***************************************************************************
|
|
; * This file is part of the project "AqHome". *
|
|
; * Please see toplevel file COPYING of that project for license details. *
|
|
; ***************************************************************************
|
|
|
|
#ifndef AVR_MODULES_COM2W_COM2W1_H
|
|
#define AVR_MODULES_COM2W_COM2W1_H
|
|
|
|
|
|
.dseg
|
|
|
|
com2w1_iface: .byte COM2W_IFACE_SIZE
|
|
|
|
|
|
|
|
.cseg
|
|
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine COM2W1_Init
|
|
;
|
|
; @clobbers
|
|
|
|
COM2W1_Init:
|
|
ldi yl, LOW(com2w1_iface)
|
|
ldi yh, HIGH(com2w1_iface)
|
|
rcall NET_Interface_Init ; (R16, R17, X)
|
|
ldi r16, COM2W_MODE_IDLE
|
|
rcall com2wSetMode ; (R17)
|
|
|
|
; setup CLK line (as input, disable internal pull-up resistor)
|
|
cbi COM_CLK1_DDR, COM_CLK1_PIN ; set CLK as input
|
|
.ifdef COM_CLK1_PUE
|
|
inr r16, COM_CLK1_PUE
|
|
cbr r16, (1<<COM_CLK1_PIN) ; disable pullup on CLK
|
|
outr COM_CLK1_PUE, r16
|
|
.else
|
|
cbi COM_CLK1_OUTPUT, COM_CLK1_PIN ; disable pullup on CLK
|
|
.endif
|
|
|
|
; setup DATA line (as input, disable internal pull-up resistor)
|
|
cbi COM_DATA1_DDR, COM_DATA1_PIN ; set DATA as input
|
|
.ifdef COM_DATA1_PUE
|
|
inr r16, COM_DATA1_PUE
|
|
cbr r16, (1<<COM_DATA1_PIN) ; disable pullup on DATA
|
|
outr COM_DATA1_PUE, r16
|
|
.else
|
|
cbi COM_DATA1_OUTPUT, COM_DATA1_PIN ; disable pullup on DATA
|
|
.endif
|
|
|
|
; setup pin-change interrupt for CLK
|
|
rcall com2w1EnableClkIrq
|
|
|
|
inr r16, COM_IRQ_ADDR_CLK1
|
|
sbr r16, (1<<COM_IRQ_BIT_CLK1) ; enable pin change irq for ATTN line
|
|
outr COM_IRQ_ADDR_CLK1, r16
|
|
|
|
inr r16, GIMSK ; enable pin change irq PCIE0 or PCIE1
|
|
sbr r16, (1<<COM_IRQ_GIMSK_CLK1)
|
|
outr GIMSK, r16
|
|
ldi r16, (1<<COM_IRQ_GIFR_CLK1) ; clear pending irq by writing 1 to ATTN bit
|
|
outr GIFR, r16
|
|
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine COM2W1_Periodically @global
|
|
;
|
|
; @clobbers R16, Y
|
|
|
|
COM2W1_Periodically:
|
|
ldi yl, LOW(com2w1_iface)
|
|
ldi yh, HIGH(com2w1_iface)
|
|
rcall com2wPeriodically
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1EnableClkIrq
|
|
;
|
|
; @clobbers
|
|
|
|
com2w1EnableClkIrq:
|
|
push r16
|
|
inr r16, COM_IRQ_ADDR_CLK1
|
|
sbr r16, (1<<COM_IRQ_BIT_CLK1) ; enable pin change irq for CLK line
|
|
outr COM_IRQ_ADDR_CLK1, r16
|
|
pop r16
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1DisableClkIrq
|
|
;
|
|
; @clobbers none
|
|
|
|
com2w1DisableClkIrq:
|
|
push r16
|
|
inr r16, COM_IRQ_ADDR_CLK1
|
|
cbr r16, (1<<COM_IRQ_BIT_CLK1) ; disable pin change irq for CLK line
|
|
outr COM_IRQ_ADDR_CLK1, r16
|
|
pop r16
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1ClkSetHigh
|
|
;
|
|
; @clobbers none
|
|
|
|
com2w1ClkSetHigh:
|
|
cbi COM_CLK1_DDR, COM_CLK1_PIN ; set CLK as input
|
|
.ifdef COM_CLK1_PUE
|
|
; cbi COM_CLK1_PUE, COM_CLK1_PIN ; disable pullup on CLK
|
|
.else
|
|
cbi COM_CLK1_OUTPUT, COM_CLK1_PIN ; disable pullup on CLK
|
|
.endif
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1ClkSetLow
|
|
;
|
|
; @clobbers none
|
|
|
|
com2w1ClkSetLow:
|
|
sbi COM_CLK1_DDR, COM_CLK1_PIN ; set CLK as output
|
|
cbi COM_CLK1_OUTPUT, COM_CLK1_PIN ; set CLK low
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1DataSetHigh
|
|
;
|
|
; @clobbers none
|
|
|
|
com2w1DataSetHigh:
|
|
cbi COM_DATA1_DDR, COM_DATA1_PIN ; set DATA as input
|
|
.ifdef COM_DATA1_PUE
|
|
; cbi COM_DATA1_PUE, COM_CLK1_PIN ; disable pullup on DATA
|
|
.else
|
|
cbi COM_DATA1_OUTPUT, COM_DATA1_PIN ; disable pullup on DATA
|
|
.endif
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1DataSetLow
|
|
;
|
|
; @clobbers none
|
|
|
|
com2w1DataSetLow:
|
|
sbi COM_DATA1_DDR, COM_DATA1_PIN ; set DATA as output
|
|
cbi COM_DATA1_OUTPUT, COM_DATA1_PIN ; set DATA low
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1ReadNextBit
|
|
;
|
|
; @param r17 data from COM_DATAn_INPUT
|
|
; @clobbers r16, r17, r18, r20, r22
|
|
|
|
com2w1ReadNextBit:
|
|
; ldi r20, 50 ; wait for up to 250us for clock rise
|
|
; rcall com2w1WaitForClockHighMulti5Us ; (R20, R22)
|
|
; brcc com2w1ReadNextBit_end
|
|
; clock is high now, read bit
|
|
; reset read timer (for leaving skipping mode)
|
|
clr r16
|
|
std Y+NET_IFACE_OFFS_READTIMER, r16
|
|
; check mode
|
|
ldd r16, Y+COM2W_IFACE_OFFS_MODE
|
|
cpi r16, COM2W_MODE_READING
|
|
brne com2w1ReadNextBit_end
|
|
; handle received bit
|
|
ldd r16, Y+COM2W_IFACE_OFFS_CURRBYTE
|
|
ldd r18, Y+COM2W_IFACE_OFFS_BITCOUNTER
|
|
andi r17, (1<<COM_DATA1_PIN)
|
|
clc
|
|
breq com2w1ReadNextBit_clockData
|
|
sec
|
|
com2w1ReadNextBit_clockData:
|
|
ror r16
|
|
std Y+COM2W_IFACE_OFFS_CURRBYTE, r16
|
|
inc r18 ; bit counter
|
|
std Y+COM2W_IFACE_OFFS_BITCOUNTER, r18
|
|
cpi r18, 8
|
|
brne com2w1ReadNextBit_end
|
|
; write byte into buffer
|
|
push xl
|
|
push xh
|
|
rcall com2wByteRecvd ; (r16, r17, r18, X)
|
|
pop xh
|
|
pop xl
|
|
; prepare for next byte
|
|
clr r16
|
|
std Y+COM2W_IFACE_OFFS_BITCOUNTER, r16
|
|
std Y+COM2W_IFACE_OFFS_CURRBYTE, r16
|
|
com2w1ReadNextBit_end:
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1WaitForClockHighMulti5Us
|
|
;
|
|
; Wait for high CLK
|
|
;
|
|
; @param R20 multiple of 5us to wait (e.g. "2" for "10" us, max: 64)
|
|
; @return CFLAG set if okay (state reached), cleared on error
|
|
; @clobbers: r20, r22
|
|
|
|
com2w1WaitForClockHighMulti5Us:
|
|
.if clock == 8000000
|
|
add r20, r20 ; *2
|
|
add r20, r20 ; *4
|
|
add r20, r20 ; *8
|
|
.endif
|
|
.elif clock == 1000000
|
|
; nothing to do
|
|
.else
|
|
.error "Unhandled clock speed"
|
|
.endif
|
|
|
|
com2w1WaitForClockHighMulti5Us_loop: ; 5 cycles per loop
|
|
sbic COM_CLK1_INPUT, COM_CLK1_PIN ; +2 if skipped, +1 if not
|
|
rjmp com2w1WaitForClockHighMulti5Us_stateReached ; +2
|
|
dec r20 ; +1
|
|
brne com2w1WaitForClockHighMulti5Us_loop ; +2
|
|
clc ; +1
|
|
ret ; +4
|
|
com2w1WaitForClockHighMulti5Us_stateReached:
|
|
sec ; +1
|
|
ret ; +4
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1WaitForClockLowMulti5Us
|
|
;
|
|
; Wait for low CLK
|
|
;
|
|
; @param R20 multiple of 5us to wait (e.g. "2" for "10" us, max: 64)
|
|
; @return CFLAG set if okay (state reached), cleared on error
|
|
; @clobbers: r20, r22
|
|
|
|
com2w1WaitForClockLowMulti5Us:
|
|
.if clock == 8000000
|
|
add r20, r20 ; *2
|
|
add r20, r20 ; *4
|
|
add r20, r20 ; *8
|
|
.endif
|
|
.elif clock == 1000000
|
|
; nothing to do
|
|
.else
|
|
.error "Unhandled clock speed"
|
|
.endif
|
|
|
|
com2w1WaitForClockLowMulti5Us_loop: ; 5 cycles per loop
|
|
sbis COM_CLK1_INPUT, COM_CLK1_PIN ; +2 if skipped, +1 if not
|
|
rjmp com2w1WaitForClockLowMulti5Us_stateReached ; +2
|
|
dec r20 ; +1
|
|
brne com2w1WaitForClockLowMulti5Us_loop ; +2
|
|
clc ; +1
|
|
ret ; +4
|
|
com2w1WaitForClockLowMulti5Us_stateReached:
|
|
sec ; +1
|
|
ret ; +4
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1SendMsg
|
|
;
|
|
; @param X pointer to bytes to send
|
|
; @param Y pointer to interface data in SRAM
|
|
; @return CFLAG set if message sent, cleared otherwise
|
|
; @clobbers R16, R18 (R20, R22, R24, R25, X)
|
|
|
|
com2w1SendMsg:
|
|
ldi r20, 11 ; wait for about 55us for clock low
|
|
rcall com2w1WaitForClockLowMulti5Us ; (R20, R22)
|
|
brcs com2w1SendMsg_busy ; CLK got low while waiting, so line is busy
|
|
push r15
|
|
in r15, SREG
|
|
cli ; atomic disable irq and set CLK low
|
|
rcall com2w1DisableClkIrq ; (none)
|
|
rcall com2w1ClkSetLow ; reserve bus (none)
|
|
out SREG, r15
|
|
pop r15
|
|
adiw xh:xl, NETMSG_OFFS_MSGLEN
|
|
ld r18, X
|
|
sbiw xh:xl, NETMSG_OFFS_MSGLEN
|
|
inc r18 ; adjust for DESTADDR
|
|
inc r18 ; adjust for MSGLEN
|
|
inc r18 ; adjust for CRCBYTE
|
|
rcall com2wWaitTime1 ; longer wait period (R22)
|
|
rcall com2w1SendBytes ; (r16, r17, r18, r22, X)
|
|
rcall com2w1ClkSetHigh ; make sure bus is released
|
|
rcall com2w1DataSetHigh
|
|
|
|
rcall com2w1EnableClkIrq ; (none)
|
|
ldi r16, NET_IFACE_OFFS_PACKETSOUT_LOW
|
|
rcall NET_Interface_IncCounter16 ; (R24, R25)
|
|
sec
|
|
ret
|
|
com2w1SendMsg_busy:
|
|
ldi r16, NET_IFACE_OFFS_ERR_BUSY_LOW
|
|
rcall NET_Interface_IncCounter16 ; (R24, R25)
|
|
clc
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1SendBytes
|
|
;
|
|
; @param R18 number of bytes to send
|
|
; @param X pointer to bytes to send
|
|
; @param Y pointer to interface data in SRAM
|
|
; @clobbers: r16, r18, X (r17, r22)
|
|
|
|
com2w1SendBytes:
|
|
com2w1SendBytes_loop:
|
|
rcall com2w1ClkSetLow ; (none)
|
|
rcall com2wWaitTime1 ; longer wait period (R22)
|
|
ld r16, X+
|
|
rcall com2w1SendByte ; (R16, R17, R22)
|
|
dec r18
|
|
brne com2w1SendBytes_loop
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1SendByte
|
|
;
|
|
; @param R16 byte to send
|
|
; @clobbers: r16, r17 (r22)
|
|
|
|
com2w1SendByte:
|
|
ldi r17, 8
|
|
com2w1SendByte_loop:
|
|
rcall com2w1ClkSetLow
|
|
rcall com2wWaitTime1 ; longer wait period (R22)
|
|
lsr r16
|
|
brcs com2w1SendByte_send1
|
|
rcall com2w1DataSetLow
|
|
rjmp com2w1SendByte_sent
|
|
com2w1SendByte_send1:
|
|
rcall com2w1DataSetHigh
|
|
com2w1SendByte_sent:
|
|
rcall com2wWaitTime2 ; shorter wait period (R22)
|
|
push r15
|
|
in r15, SREG
|
|
cli ; ensure time period by disabling irqs
|
|
rcall com2w1ClkSetHigh
|
|
rcall com2wWaitTime1 ; longer wait period (R22)
|
|
out SREG, r15
|
|
pop r15
|
|
dec r17
|
|
brne com2w1SendByte_loop
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine COM2W1_Run @global
|
|
;
|
|
; @return CFLAG set if something done, cleared otherwise
|
|
; @clobbers all
|
|
|
|
COM2W1_Run:
|
|
ldi yl, LOW(com2w1_iface)
|
|
ldi yh, HIGH(com2w1_iface)
|
|
rjmp com2w1RunMode ; (all but Y)
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1RunMode
|
|
;
|
|
; @clobbers all
|
|
|
|
com2w1RunMode:
|
|
cpi r16, COM2W_MODE_NUM
|
|
brcs COM2W1_Run_jump
|
|
ldi r16, COM2W_MODE_IDLE ; unknown mode, set to idle
|
|
rcall com2wSetMode ; (R17)
|
|
sec
|
|
ret
|
|
COM2W1_Run_jump:
|
|
ldi zl, LOW(com2w1ModeJumpTable)
|
|
ldi zh, HIGH(com2w1ModeJumpTable)
|
|
add zl, r16
|
|
adc zh, r16
|
|
sub zh, r16
|
|
ijmp
|
|
com2w1ModeJumpTable:
|
|
rjmp com2w1RunIdle
|
|
rjmp com2w1RunReading
|
|
rjmp com2w1RunSkipping
|
|
rjmp com2w1RunWriting
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1RunIdle
|
|
;
|
|
; @param Y pointer to interface data in SRAM
|
|
; @clobbers R16, R17, R22, R24, R25, X
|
|
|
|
com2w1RunIdle:
|
|
;rjmp com2w1RunIdle_end ; DEBUG
|
|
push r15
|
|
in r15, SREG
|
|
cli
|
|
; look for outbound message
|
|
rcall NET_Interface_PeekNextOutgoingMsgNum ; r16=msgNum
|
|
brcs com2w1RunIdle_haveMsg
|
|
out SREG, r15
|
|
pop r15
|
|
clc
|
|
rjmp com2w1RunIdle_end
|
|
|
|
com2w1RunIdle_haveMsg:
|
|
mov r24, r16
|
|
ldi r16, COM2W_MODE_WRITING
|
|
rcall com2wSetMode ; (R17)
|
|
mov r16, r24
|
|
out SREG, r15
|
|
pop r15
|
|
|
|
push r16
|
|
rcall NET_Buffer_Locate ; (R17)
|
|
adiw xh:xl, 1
|
|
rcall com2w1SendMsg ; (R16, R17, R22, R24, R25, X)
|
|
push r15
|
|
in r15, SREG ; save SREG (no CLI, we want to save CFLAG only)
|
|
ldi r16, COM2W_MODE_IDLE
|
|
rcall com2wSetMode ; (R17)
|
|
out SREG, r15 ; restore SREG
|
|
pop r15
|
|
pop r16
|
|
brcc com2w1RunIdle_end
|
|
|
|
push r15
|
|
in r15, SREG
|
|
cli
|
|
rcall NET_Interface_GetNextOutgoingMsgNum ; take current msg off the queue
|
|
rcall NET_Buffer_ReleaseByNum ; (R16, X)
|
|
out SREG, r15
|
|
pop r15
|
|
sec
|
|
com2w1RunIdle_end:
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1RunReading
|
|
;
|
|
; @param Y pointer to interface data in SRAM
|
|
; @clobbers none
|
|
|
|
com2w1RunReading:
|
|
; check for timeout (Y+NET_IFACE_OFFS_READTIMER)
|
|
ldd r16, Y+NET_IFACE_OFFS_READTIMER
|
|
cpi r16, COM2W_READING_MAXREADCOUNTER
|
|
brcc com2w1RunReading_goIdle
|
|
ldd r16, Y+COM2W_IFACE_OFFS_MODECOUNTER
|
|
cpi r16, COM2W_READING_MAXMODECOUNTER
|
|
brcc com2w1RunReading_goIdle
|
|
clc
|
|
rjmp com2w1RunReading_end
|
|
com2w1RunReading_goIdle:
|
|
ldi r16, NET_IFACE_OFFS_ERR_IO_LOW
|
|
rcall NET_Interface_IncCounter16 ; (R24, R25)
|
|
ldi r16, COM2W_MODE_IDLE
|
|
rcall com2wSetMode ; (r17)
|
|
sec
|
|
com2w1RunReading_end:
|
|
ret
|
|
; @end
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1RunSkipping
|
|
;
|
|
; @param Y pointer to interface data in SRAM
|
|
; @clobbers r16 (r17)
|
|
|
|
com2w1RunSkipping:
|
|
; check for timeout (Y+NET_IFACE_OFFS_READTIMER)
|
|
ldd r16, Y+NET_IFACE_OFFS_READTIMER
|
|
cpi r16, COM2W_SKIPPING_MAXREADCOUNTER
|
|
brcc com2w1RunSkipping_goIdle
|
|
ldd r16, Y+COM2W_IFACE_OFFS_MODECOUNTER
|
|
cpi r16, COM2W_SKIPPING_MAXMODECOUNTER
|
|
brcc com2w1RunSkipping_goIdle
|
|
clc
|
|
rjmp com2w1RunSkipping_end
|
|
com2w1RunSkipping_goIdle:
|
|
ldi r16, COM2W_MODE_IDLE
|
|
rcall com2wSetMode ; (r17)
|
|
sec
|
|
com2w1RunSkipping_end:
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1RunWriting
|
|
;
|
|
; @param Y pointer to interface data in SRAM
|
|
; @clobbers none
|
|
|
|
com2w1RunWriting:
|
|
; TODO: check for timeout
|
|
clc
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine COM2W1_ClkChangeIsr @global @isr
|
|
;
|
|
; @clobbers none
|
|
|
|
COM2W1_ClkChangeIsr:
|
|
push r15
|
|
in r15, SREG
|
|
push r16
|
|
push r17
|
|
inr r16, COM_CLK1_INPUT ; read clk state early
|
|
inr r17, COM_DATA1_INPUT ; read data state early
|
|
rcall COM2W1_HandleClockInterrupt
|
|
pop r17
|
|
pop r16
|
|
out SREG, r15
|
|
pop r15
|
|
reti
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine COM2W1_HandleClockInterrupt @global
|
|
;
|
|
; @param r16 data from COM_CLKn_INPUT
|
|
; @param r17 data from COM_DATAn_INPUT
|
|
; @clobbers none
|
|
|
|
COM2W1_HandleClockInterrupt:
|
|
push r16
|
|
push r17
|
|
push r18
|
|
push xl
|
|
push xh
|
|
push yl
|
|
push yh
|
|
ldi yl, LOW(com2w1_iface)
|
|
ldi yh, HIGH(com2w1_iface)
|
|
rcall com2w1ActOnClock ; (r16, r17, r18, X)
|
|
pop yh
|
|
pop yl
|
|
pop xh
|
|
pop xl
|
|
pop r18
|
|
pop r17
|
|
pop r16
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
; ---------------------------------------------------------------------------
|
|
; @routine com2w1ActOnClock
|
|
;
|
|
; @param r16 data from COM_CLKn_INPUT
|
|
; @param r17 data from COM_DATAn_INPUT
|
|
; @clobbers r16 (r17, r18, X)
|
|
|
|
com2w1ActOnClock:
|
|
andi r16, (1<<COM_CLK1_PIN)
|
|
brne com2w1ActOnClock_clockHigh
|
|
; clock low
|
|
ldd r18, Y+COM2W_IFACE_OFFS_MODE
|
|
cpi r18, COM2W_MODE_IDLE
|
|
breq com2w1ActOnClock_startReading
|
|
cpi r18, COM2W_MODE_SKIPPING
|
|
breq com2w1ActOnClock_skipping
|
|
rjmp com2w1ActOnClock_end
|
|
com2w1ActOnClock_skipping:
|
|
; ldd r18, Y+COM2W_IFACE_OFFS_MODECOUNTER
|
|
; cpi r18, COM2W_SKIPPING_MAXMODECOUNTER
|
|
; brcc com2w1ActOnClock_startReading
|
|
rjmp com2w1ActOnClock_end
|
|
com2w1ActOnClock_startReading:
|
|
rcall com2wStartReading ; (r16, r17, X)
|
|
rjmp com2w1ActOnClock_end
|
|
com2w1ActOnClock_clockHigh:
|
|
ldd r18, Y+COM2W_IFACE_OFFS_MODE
|
|
cpi r18, COM2W_MODE_READING
|
|
brne com2w1ActOnClock_end
|
|
|
|
push r20
|
|
push r22
|
|
rcall com2w1ReadNextBit ; (r16, r17, r18, r20, r22)
|
|
pop r22
|
|
pop r20
|
|
|
|
com2w1ActOnClock_end:
|
|
ret
|
|
; @end
|
|
|
|
|
|
|
|
|
|
|
|
#endif ; AVR_MODULES_COM2W_COM2W1_H
|
|
|