44 lines
1.2 KiB
NASM
44 lines
1.2 KiB
NASM
; ***************************************************************************
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; copyright : (C) 2026 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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#ifndef AQH_AVR_NETWORK_MSG_RANGE_R_ASM
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#define AQH_AVR_NETWORK_MSG_RANGE_R_ASM
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; ***************************************************************************
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; code
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.cseg
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; ---------------------------------------------------------------------------
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; @routine NETMSG_RangeRead @global
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; Read a RANGE message.
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;
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; @param X buffer to read from
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; @return R18 command
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; @return R20 range begin
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; @return R21 range end
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; @clobbers none
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NETMSG_Range_Read:
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adiw xh:xl, NETMSG_OFFS_CMD
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ld r18, X ; command
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adiw xh:xl, NETMSG_RANGE_OFFS_FROM-NETMSG_OFFS_CMD ; skip src addr and uid
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ld r20, X+ ; range from
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ld r21, X ; range to
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sbiw xh:xl, NETMSG_RANGE_OFFS_TO ; back to msg begin
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ret
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; @end
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#endif
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