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remove COM_* code.

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This commit is contained in:
Martin Preuss
2025-05-18 00:57:39 +02:00
parent 4b4753415a
commit b8fbbb7125
2 changed files with 17 additions and 32 deletions
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47
avr/modules/flash/io_bitbang.asm
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@@ -140,7 +140,7 @@ ioRawWaitForValidMsg:
ioRawWaitForValidMsg_attnLow:
ldi xl, LOW(flashRecvBuffer)
ldi xh, HIGH(flashRecvBuffer)
ldi r16, COM2_MAINTENANCE_ADDR
ldi r16, NET_MAINTENANCE_ADDR
ldi r17, FLASH_RECVBUFFER_MAXLEN-3
rcall ioRawReceivePacketIntoBuffer
brcs ioRawWaitForValidMsg_packetReceived
@@ -174,7 +174,6 @@ ioRawWaitForValidMsg_end:
; @param R17 maximum value for accepted msg data (i.e. buffersize minus 3)
; @param X buffer to receive to
; @return CFLAG set if okay (packet received), cleared on error
; @return R16 error code if CFLAG is cleared (COM2_ERROR_NOTFORME, COM2_ERROR_IOERROR, COM2_ERROR_DATAERROR)
; @clobbers: r16, r17, r18, X (r19, r20, r21, r22)
ioRawReceivePacketIntoBuffer:
@@ -183,7 +182,7 @@ ioRawReceivePacketIntoBuffer:
; read destination address
rcall ioRawReceiveByte ; read byte (R16, R17, R20, R21, R22)
pop r17 ; pop from R16 to R17
brcc ioRawReceivePacketIntoBuffer_ioError
brcc ioRawReceivePacketIntoBuffer_error
#ifndef COM_ACCEPT_ALL_DEST ; accept every destination address
; compare destination address (accept "FF" and own address)
cp r16, r17
@@ -197,27 +196,22 @@ ioRawReceivePacketIntoBuffer_acceptAddr:
st X+, r16 ; store dest address, lock buffer
; read msg length
rcall ioRawReceiveByte ; read packet length (R16, R17, R20, R21, R22)
brcc ioRawReceivePacketIntoBuffer_ioError
brcc ioRawReceivePacketIntoBuffer_error
st X+, r16
cp r16, r18 ; (COM2_BUFFER_SIZE-3)
brcc ioRawReceivePacketIntoBuffer_contentError ; packet too long
brcc ioRawReceivePacketIntoBuffer_error ; packet too long
inc r16 ; account for checksum byte
mov r17, r16
ioRawReceivePacketIntoBuffer_loop:
push r17
rcall ioRawReceiveByte ; read byte (R16, R17, R20, R21, R22)
pop r17
brcc ioRawReceivePacketIntoBuffer_ioError
brcc ioRawReceivePacketIntoBuffer_error
st X+, r16
dec r17
brne ioRawReceivePacketIntoBuffer_loop
sec
ret
ioRawReceivePacketIntoBuffer_ioError:
ldi r16, COM2_ERROR_IOERROR
rjmp ioRawReceivePacketIntoBuffer_error
ioRawReceivePacketIntoBuffer_contentError:
ldi r16, COM2_ERROR_DATAERROR
ioRawReceivePacketIntoBuffer_error:
clc
ret
@@ -281,36 +275,29 @@ ioRawReceiveByte_error:
; @clobbers R16, R22 (R17, R21, X)
ioRawSendPacket:
rcall ioRawAcquireBus ; (none)
brcc ioRawSendPacket_lineBusyError
rcall ioRawAcquireBus ; (none)
brcc ioRawSendPacket_ret
rcall ioRawWaitForOneBitLength ; wait for one bit duration (R22)
rcall ioRawWaitForOneBitLength ; wait for one bit duration (R22)
rcall ioRawWaitForOneBitLength ; wait for one bit duration (R22)
rcall ioRawWaitForOneBitLength ; wait for one bit duration (R22)
adiw xh:xl, COM2_MSG_OFFS_MSGLEN
adiw xh:xl, NETMSG_OFFS_MSGLEN
ld r17, X
sbiw xh:xl, COM2_MSG_OFFS_MSGLEN
inc r17 ; account for dest addr
inc r17 ; account for msglen byte
inc r17 ; account for crc byte
sbiw xh:xl, NETMSG_OFFS_MSGLEN
inc r17 ; account for dest addr
inc r17 ; account for msglen byte
inc r17 ; account for crc byte
ioRawSendPacket_loop:
ld r16, X+
rcall ioRawSendByte ; send byte (R16, R21, R22)
rcall ioRawSendByte ; send byte (R16, R21, R22)
brcc ioRawSendPacket_releaseBusRet
dec r17
brne ioRawSendPacket_loop
sec
ioRawSendPacket_releaseBusRet:
cbi COM_ATTN_DDR, COM_ATTN_PIN ; release ATTN line (by setting direction to IN)
brcc ioRawSendPacket_ioError
; packet successfully sent
ret
ioRawSendPacket_ioError:
ldi r16,COM2_ERROR_COLLISION
ret
ioRawSendPacket_lineBusyError:
ldi r16,COM2_ERROR_BUSY
cbi COM_ATTN_DDR, COM_ATTN_PIN ; release ATTN line (by setting direction to IN)
ioRawSendPacket_ret:
ret
; @end