Started implementing the low level PDI protocol in the AVRISP project, for XMEGA device programming.
Dean Camera
15 years ago
parent
f92b56191d
commit
f69f03cb0d
File diff suppressed because one or more lines are too long
@ -0,0 +1,105 @@
|
||||
/*
|
||||
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_XPROG_PROTOCOL)
|
||||
|
||||
/** \file
|
||||
*
|
||||
* Target-related functions for the PDI Protocol decoder.
|
||||
*/
|
||||
|
||||
#define INCLUDE_FROM_PDITARGET_C
|
||||
#include "PDITarget.h"
|
||||
|
||||
void PDITarget_SendByte(uint8_t Byte)
|
||||
{
|
||||
PDIDATA_LINE_PORT &= ~PDIDATA_LINE_MASK;
|
||||
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
|
||||
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;
|
||||
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
}
|
||||
|
||||
PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
|
||||
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
}
|
||||
|
||||
uint8_t PDITarget_ReceiveByte(void)
|
||||
{
|
||||
uint8_t ReceivedByte = 0;
|
||||
|
||||
PDIDATA_LINE_DDR &= ~PDIDATA_LINE_MASK;
|
||||
|
||||
bool FoundStartBit;
|
||||
|
||||
do
|
||||
{
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
FoundStartBit = !(PDIDATA_LINE_PIN & PDIDATA_LINE_MASK);
|
||||
} while (!FoundStartBit);
|
||||
|
||||
for (uint8_t i = 0; i < 8; i++)
|
||||
{
|
||||
if (PDIDATA_LINE_PIN & PDIDATA_LINE_MASK)
|
||||
ReceivedByte |= 0x01;
|
||||
|
||||
ReceivedByte <<= 1;
|
||||
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
}
|
||||
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
|
||||
|
||||
PDIDATA_LINE_DDR |= PDIDATA_LINE_MASK;
|
||||
|
||||
return ReceivedByte;
|
||||
}
|
||||
|
||||
#endif
|
||||
@ -0,0 +1,74 @@
|
||||
/*
|
||||
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.
|
||||
*/
|
||||
|
||||
/** \file
|
||||
*
|
||||
* Header file for PDITarget.c.
|
||||
*/
|
||||
|
||||
#ifndef _PDI_TARGET_
|
||||
#define _PDI_TARGET_
|
||||
|
||||
/* Includes: */
|
||||
#include <avr/io.h>
|
||||
#include <stdbool.h>
|
||||
|
||||
/* Defines: */
|
||||
#define PDIDATA_LINE_PORT PORTB
|
||||
#define PDIDATA_LINE_DDR DDRB
|
||||
#define PDIDATA_LINE_PIN PINB
|
||||
#define PDIDATA_LINE_MASK (1 << 2)
|
||||
|
||||
#define PDICLOCK_LINE_PORT RESET_LINE_PORT
|
||||
#define PDICLOCK_LINE_DDR RESET_LINE_DDR
|
||||
#define PDICLOCK_LINE_MASK RESET_LINE_MASK
|
||||
|
||||
#define PDI_CMD_LDS 0x00
|
||||
#define PDI_CMD_LD 0x20
|
||||
#define PDI_CMD_STS 0x40
|
||||
#define PDI_CMD_ST 0x60
|
||||
#define PDI_CMD_LDCS 0x80
|
||||
#define PDI_CMD_REPEAT 0xA0
|
||||
#define PDI_CMD_STCS 0xC0
|
||||
#define PDI_CMD_KEY 0xE0
|
||||
|
||||
#define PD_STATUS_REG 0
|
||||
#define PD_RESET_REG 1
|
||||
#define PD_CTRL_REG 2
|
||||
|
||||
#define PDI_STATUS_NVM (1 << 1)
|
||||
#define PDI_RESET_KEY 0x59
|
||||
|
||||
|
||||
/* Function Prototypes: */
|
||||
void PDITarget_SendByte(uint8_t Byte);
|
||||
uint8_t PDITarget_ReceiveByte(void);
|
||||
|
||||
#endif
|
||||
Loading…
Reference in new issue