48 lines
1.5 KiB
NASM
48 lines
1.5 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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; ---------------------------------------------------------------------------
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; Enqueue a DEVICE 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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; - nothing
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; REGS: R3, R4, R16, R17, R18, X (R19, R20, R21)
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CPRO_WriteDevice:
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ldi r17, COM2_PAYLOAD_FLAGS_UID | (8<<COM2_PAYLOAD_FLAGS_SHIFT_NUM)
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ldi r18, CPRO_CMD_DEVICE
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rcall COM2_BeginMsgWithVariablePayload ; (R3, R4, R16, R17, R18, R19, R20, R21, X)
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push yh
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push yl
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ldi zh, HIGH(devInfoBlock*2) ; 6-13: devInfoBlock
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ldi zl, LOW(devInfoBlock*2)
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ldi r18, 8
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rcall Utils_CopyFromFlash ; (R17, R18, X, Y)
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pop yl
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pop yh
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sbiw xh:xl, 16 ; go back to beginning of message (1 byte dst addr, 1 byte length, 14 bytes payload)
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rcall com2CalcAndAddChecksumByte ; (R16, R17, R18, R19, R20, X)
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sbiw xh:xl, 17 ; go back to beginning of message (1 byte dst addr, 1 byte length, 14 bytes payload, 1 byte crc)
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ret
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