67 lines
1.7 KiB
NASM
67 lines
1.7 KiB
NASM
; ***************************************************************************
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; copyright : (C) 2023 by Martin Preuss
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; email : martin@libchipcard.de
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;
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; ***************************************************************************
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; * This file is part of the project "AqHome". *
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; * Please see toplevel file COPYING of that project for license details. *
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; ***************************************************************************
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; ***************************************************************************
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; code
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.cseg
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#if 0
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; ---------------------------------------------------------------------------
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; Create and send a FLASH RESPONSE packet
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;
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; IN:
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; - R16: response code to send
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; OUT:
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; - nothing
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; REGS: r16, X (R15, R17, R18, R19, R20, R21, R22)
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flashSendFlashResponse:
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; send flash ready message
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ldi xl, LOW(flashSendBuffer)
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ldi xh, HIGH(flashSendBuffer)
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rcall flashWriteFlashRsp ; (R16, R17, R18, R19, R20)
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rjmp flashSendPacketUntilSuccess ; (R15, R16, R17, R21, R22, X)
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#endif
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; ---------------------------------------------------------------------------
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; Write a FLASH_RESPONSE packet.
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;
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; IN:
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; - R16: response code (0 if ok, error code otherwise)
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; - X : buffer to write to
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; OUT:
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; - nothing
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; MODIFIED REGS: R16, R17 (R18, R19, R20)
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flashWriteFlashRsp:
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clr r18
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st X+, r18 ; dest address (unused)
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ldi r18, 3 ; msg code+src address+one payload byte
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st X+, r18 ; msg len
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ldi r17, CPRO_CMD_FLASH_RSP
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st X+, r17 ; msg code
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clr r17
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st X+, r17 ; src address (not used)
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st X+, r16 ; payload byte
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sbiw xh:xl, 5
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rcall com2CalcAndAddChecksumByte ; (R16, R17, R18, R19, R20, X)
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sbiw xh:xl, 6
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ret
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