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/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
#if defined(ENABLE_PDI_PROTOCOL) || defined(__DOXYGEN__)
/** \file
*
* Target-related functions for the PDI Protocol decoder.
*/
#define INCLUDE_FROM_PDITARGET_C
#include "PDITarget.h"
/** Writes a given byte to the attached XMEGA device, using a RS232 frame via software through the
* PDI interface.
*
* \param[in] Byte Byte to send to the attached device
*/
void PDITarget_SendByte(uint8_t Byte)
{
PDIDATA_LINE_PORT &= ~PDIDATA_LINE_MASK;
TOGGLE_PDI_CLOCK;
for (uint8_t i = 0; i < 8; i++)
{
if (Byte & 0x01)
PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
else
PDIDATA_LINE_PORT &= ~PDIDATA_LINE_MASK;
Byte >>= 1;
TOGGLE_PDI_CLOCK;
}
PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
TOGGLE_PDI_CLOCK;
TOGGLE_PDI_CLOCK;
}
/** Reads a given byte from the attached XMEGA device, encoded in a RS232 frame through the PDI interface.
*
* \return Received byte from the attached device
*/
uint8_t PDITarget_ReceiveByte(void)
{
uint8_t ReceivedByte = 0;
PDIDATA_LINE_DDR &= ~PDIDATA_LINE_MASK;
while (PDIDATA_LINE_PIN & PDIDATA_LINE_MASK);
TOGGLE_PDI_CLOCK;
for (uint8_t i = 0; i < 8; i++)
{
if (PDIDATA_LINE_PIN & PDIDATA_LINE_MASK)
ReceivedByte |= 0x01;
ReceivedByte <<= 1;
TOGGLE_PDI_CLOCK;
}
TOGGLE_PDI_CLOCK;
TOGGLE_PDI_CLOCK;
PDIDATA_LINE_DDR |= PDIDATA_LINE_MASK;
return ReceivedByte;
}
#endif
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