103 lines
2.4 KiB
NASM
103 lines
2.4 KiB
NASM
; ***************************************************************************
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; copyright : (C) 2025 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_MAIN_ASM
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#define AQH_AVR_NETWORK_MAIN_ASM
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.cseg
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; ---------------------------------------------------------------------------
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; @routine NET_Init
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;
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; Initializes buffers.
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;
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; @clobbers R16, R17, X
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NET_Init:
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rcall NET_Buffer_Init ; (R16, R17, X)
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ldi r16, NET_MSGNUMINBUF_SIZE
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ldi yl, LOW(netRingBufferMsgNumIn)
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ldi yh, HIGH(netRingBufferMsgNumIn)
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rcall RingBufferY_Init ; (R17)
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sec
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine NET_AddIncomingMsgNum @global
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;
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; @return CFLAG on success, cleared on error
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; @param R16 buffer number of the next incoming message
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; @clobbers R17, R18, X
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NET_AddIncomingMsgNum:
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push yl
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push yh
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ldi yl, LOW(netRingBufferMsgNumIn)
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ldi yh, HIGH(netRingBufferMsgNumIn)
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rcall RingBufferY_WriteByteGuarded ; R17, R18, X
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pop yh
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pop yl
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine NET_GetNextIncomingMsgNum @global
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;
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; @return CFLAG on success, cleared on error
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; @return R16 buffer number of the next incoming message
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; @clobbers R17, R18, X
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NET_GetNextIncomingMsgNum:
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push yl
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push yh
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ldi yl, LOW(netRingBufferMsgNumIn)
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ldi yh, HIGH(netRingBufferMsgNumIn)
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rcall RingBufferY_ReadByteGuarded ; R17, R18, X
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pop yh
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pop yl
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ret
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; @end
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; ---------------------------------------------------------------------------
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; @routine NET_GetPeekIncomingMsgNum @global
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;
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; @return CFLAG on success, cleared on error
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; @return R16 buffer number of the next incoming message
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; @param Y pointer to start of interface data
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; @clobbers R17, R18, X
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NET_PeekNextIncomingMsgNum:
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push yl
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push yh
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ldi yl, LOW(netRingBufferMsgNumIn)
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ldi yh, HIGH(netRingBufferMsgNumIn)
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rcall RingBufferY_PeekByteGuarded ; R17, R18, X
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pop yh
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pop yl
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ret
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; @end
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#endif
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