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106 lines
2.8 KiB
106 lines
2.8 KiB
15 years ago
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/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#if defined(ENABLE_XPROG_PROTOCOL)
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/** \file
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*
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* Target-related functions for the PDI Protocol decoder.
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*/
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#define INCLUDE_FROM_PDITARGET_C
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#include "PDITarget.h"
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void PDITarget_SendByte(uint8_t Byte)
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{
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PDIDATA_LINE_PORT &= ~PDIDATA_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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for (uint8_t i = 0; i < 8; i++)
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{
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if (Byte & 0x01)
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PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
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else
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PDIDATA_LINE_PORT &= ~PDIDATA_LINE_MASK;
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Byte >>= 1;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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}
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PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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}
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uint8_t PDITarget_ReceiveByte(void)
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{
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uint8_t ReceivedByte = 0;
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PDIDATA_LINE_DDR &= ~PDIDATA_LINE_MASK;
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bool FoundStartBit;
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do
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{
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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FoundStartBit = !(PDIDATA_LINE_PIN & PDIDATA_LINE_MASK);
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} while (!FoundStartBit);
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for (uint8_t i = 0; i < 8; i++)
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{
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if (PDIDATA_LINE_PIN & PDIDATA_LINE_MASK)
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ReceivedByte |= 0x01;
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ReceivedByte <<= 1;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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}
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
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PDIDATA_LINE_DDR |= PDIDATA_LINE_MASK;
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return ReceivedByte;
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}
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#endif
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