Started implementing the low level PDI protocol in the AVRISP project, for XMEGA device programming.

Projects/AVRISP/AVRISP.c

@@ -70,7 +70,6 @@ void SetupHardware(void)
 	/* Hardware Initialization */
 	LEDs_Init();
 	USB_Init();
-	SerialStream_Init(9600, true);
 
 	#if defined(ADC)
 	/* Initialize the ADC converter for VTARGET level detection on supported AVR models */

Projects/AVRISP/AVRISP.h

@@ -47,7 +47,6 @@
 		#include <LUFA/Version.h>
 		#include <LUFA/Drivers/Board/LEDs.h>
 		#include <LUFA/Drivers/USB/USB.h>
-		#include <LUFA/Drivers/Peripheral/SerialStream.h>
 		
 		#if defined(ADC)
 			#include <LUFA/Drivers/Peripheral/ADC.h>

Projects/AVRISP/Lib/ISPProtocol.c

@@ -61,7 +61,7 @@ void ISPProtocol_EnterISPMode(void)
 	
 	CurrentAddress = 0;
 
-	V2Protocol_DelayMS(Enter_ISP_Params.ExecutionDelayMS);	  
+	V2Protocol_DelayMS(Enter_ISP_Params.ExecutionDelayMS); 
 	SPI_Init(ISPTarget_GetSPIPrescalerMask() | SPI_SCK_LEAD_RISING | SPI_SAMPLE_LEADING | SPI_MODE_MASTER);
 		
 	while (Enter_ISP_Params.SynchLoops-- && (ResponseStatus == STATUS_CMD_FAILED))

Projects/AVRISP/Lib/PDIProtocol.c

@@ -35,7 +35,7 @@
  *  PDI Protocol handler, to process V2 Protocol wrapped PDI commands used in Atmel programmer devices.
  */
 
-#define  INCLUDE_FROM_XPROG_C
+#define  INCLUDE_FROM_PDIPROTOCOL_C
 #include "PDIProtocol.h"
 
 uint32_t XPROG_Param_NVMBase;
@@ -91,6 +91,59 @@ void PDIProtocol_XPROG_Command(void)
 	}
 }
 
+static void PDIProtocol_EnterXPROGMode(void)
+{
+	uint8_t ReturnStatus = XPRG_ERR_OK;
+
+	Endpoint_ClearOUT();
+	Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+	
+	PDIDATA_LINE_DDR  |= PDIDATA_LINE_MASK;
+	PDICLOCK_LINE_DDR |= PDICLOCK_LINE_MASK;
+	
+	PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
+
+	_delay_us(1);
+	
+	for (uint8_t i = 0; i < 16; i++)
+	{
+		PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+		PDICLOCK_LINE_PORT ^= PDICLOCK_LINE_MASK;
+	}
+		
+	static const uint8_t NVMKey[8] = {0x12, 0x89, 0xAB, 0x45, 0xCD, 0xD8, 0x88, 0xFF};
+	
+	PDITarget_SendByte(PDI_CMD_KEY);	
+	for (uint8_t i = 0; i < 8; i++)
+	  PDITarget_SendByte(NVMKey[i]);
+
+	PDITarget_SendByte(PDI_CMD_LDCS | PD_STATUS_REG);	
+	if (!(PDITarget_ReceiveByte() & PDI_STATUS_NVM))
+	  ReturnStatus = XPRG_ERR_FAILED;
+	
+	Endpoint_Write_Byte(CMD_XPROG);
+	Endpoint_Write_Byte(XPRG_CMD_ENTER_PROGMODE);
+	Endpoint_Write_Byte(ReturnStatus);
+	Endpoint_ClearIN();
+}
+
+static void PDIProtocol_LeaveXPROGMode(void)
+{
+	Endpoint_ClearOUT();
+	Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
+	
+	PDIDATA_LINE_DDR   &= ~PDIDATA_LINE_MASK;
+	PDICLOCK_LINE_DDR  &= ~PDICLOCK_LINE_MASK;
+
+	PDIDATA_LINE_PORT  &= ~PDIDATA_LINE_MASK;
+	PDICLOCK_LINE_PORT &= ~PDICLOCK_LINE_MASK;
+	
+	Endpoint_Write_Byte(CMD_XPROG);
+	Endpoint_Write_Byte(XPRG_CMD_LEAVE_PROGMODE);
+	Endpoint_Write_Byte(XPRG_ERR_OK);
+	Endpoint_ClearIN();
+}
+
 static void PDIProtocol_EraseChip(void)
 {
 	uint8_t ReturnStatus = XPRG_ERR_OK;
@@ -209,34 +262,6 @@ static void PDIProtocol_ReadCRC(void)
 	Endpoint_ClearIN();	
 }
 
-static void PDIProtocol_EnterXPROGMode(void)
-{
-	uint8_t ReturnStatus = XPRG_ERR_OK;
-
-	Endpoint_ClearOUT();
-	Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-	
-	// TODO: Enter device programming mode here via PDI protocol
-	
-	Endpoint_Write_Byte(CMD_XPROG);
-	Endpoint_Write_Byte(XPRG_CMD_ENTER_PROGMODE);
-	Endpoint_Write_Byte(ReturnStatus);
-	Endpoint_ClearIN();
-}
-
-static void PDIProtocol_LeaveXPROGMode(void)
-{
-	Endpoint_ClearOUT();
-	Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-	
-	// TODO: Exit device programming mode here via PDI protocol
-
-	Endpoint_Write_Byte(CMD_XPROG);
-	Endpoint_Write_Byte(XPRG_CMD_LEAVE_PROGMODE);
-	Endpoint_Write_Byte(XPRG_ERR_OK);
-	Endpoint_ClearIN();
-}
-
 static void PDIProtocol_SetParam(void)
 {
 	uint8_t ReturnStatus = XPRG_ERR_OK;

Projects/AVRISP/Lib/PDIProtocol.h

@@ -41,6 +41,7 @@
 		#include <stdio.h>
 	
 		#include "V2Protocol.h"
+		#include "PDITarget.h"
 
 	/* Macros: */
 		#define XPRG_CMD_ENTER_PROGMODE             0x01
@@ -87,7 +88,7 @@
 		void PDIProtocol_XPROG_SetMode(void);
 		void PDIProtocol_XPROG_Command(void);
 		
-		#if defined(INCLUDE_FROM_XPROG_C)
+		#if defined(INCLUDE_FROM_PDIPROTOCOL_C)
 			static void PDIProtocol_EnterXPROGMode(void);
 			static void PDIProtocol_LeaveXPROGMode(void);
 			static void PDIProtocol_SetParam(void);

Projects/AVRISP/Lib/PDITarget.c

@@ -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

Projects/AVRISP/Lib/PDITarget.h

@@ -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

Projects/AVRISP/makefile

@@ -132,7 +132,7 @@ SRC = $(TARGET).c                                                 \
       Lib/ISPProtocol.c                                           \
       Lib/ISPTarget.c                                             \
 	  Lib/PDIProtocol.c                                           \
-	  $(LUFA_PATH)/LUFA/Drivers/Peripheral/SerialStream.c         \
+	  Lib/PDITarget.c                                             \
 	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/DevChapter9.c        \
 	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Endpoint.c           \
 	  $(LUFA_PATH)/LUFA/Drivers/USB/LowLevel/Host.c               \

Projects/XPLAINBridge/Lib/SoftUART.c

@@ -68,7 +68,7 @@ void SoftUART_Init(void)
 {
 	OCR2B  = TCNT2 + 1;						// force first compare
 	TCCR2A = (1 << COM2B1) | (1 << COM2B0);	// T1 mode 0
-	TCCR2B = (1 << FOC2B) | (1 << CS21); 	// CLK/8, T1 mode 0
+	TCCR2B = (1 << FOC2B)  | (1 << CS21); 	// CLK/8, T1 mode 0
 	TIMSK2 = (1 << OCIE2B);					// enable tx and wait for start
 	EICRA  = (1 << ISC01);					// -ve edge
 	EIMSK  = (1 << INT0);					// enable INT0 interrupt
@@ -76,7 +76,7 @@ void SoftUART_Init(void)
 	stx_count = 0;							// nothing to send
 	srx_done = 0;							// nothing received
 	STXPORT |= 1 << STX;					// TX output
-	STXDDR |= 1 << STX;						// TX output
+	STXDDR  |= 1 << STX;					// TX output
 	SRXPORT |= (1 << SRX);					// pullup on INT0
 }