Fix to V2 Protocol for Fuse/Sig/Lock byte read -- off by one error on the array when writing back the response from the device.

FLASH/EEPROM reading and writing currently broken and unfinished, respectively.

Projects/Incomplete/AVRISP/AVRISP.c

@@ -34,6 +34,10 @@
  *  the project and is responsible for the initial application hardware configuration.
  */
 
+// TODO: Add reversed target connector checks
+// TODO: Add in software SPI for lower programming speeds below 125KHz
+// TODO: Add in VTARGET detection
+
 #include "AVRISP.h"
 
 /** Main program entry point. This routine contains the overall program flow, including initial
@@ -45,8 +49,6 @@ int main(void)
 
 	V2Params_LoadEEPROMParamValues();
 	
-	printf("AVRISP-MKII Clone\r\n");
-	
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 
 	for (;;)
@@ -68,7 +70,6 @@ void SetupHardware(void)
 	clock_prescale_set(clock_div_1);
 
 	/* Hardware Initialization */
-	SerialStream_Init(9600, false);
 	LEDs_Init();
 	USB_Init();
 }

Projects/Incomplete/AVRISP/AVRISP.h

@@ -46,7 +46,6 @@
 
 		#include <LUFA/Version.h>
 		#include <LUFA/Drivers/Board/LEDs.h>
-		#include <LUFA/Drivers/Peripheral/SerialStream.h>
 		#include <LUFA/Drivers/Peripheral/SPI.h>
 		#include <LUFA/Drivers/USB/USB.h>
 

Projects/Incomplete/AVRISP/AVRISP.txt

@@ -50,11 +50,19 @@
  *  \section SSec_Description Project Description: 
  *
  *  Firmware for an AVRStudio compatible AVRISP-MKII clone programmer. This project will enable the USB AVR series of
- *  microcontrollers to act as a clone of the official Atmel AVRISP-MKII programmer, usable within AVRStudio.
+ *  microcontrollers to act as a clone of the official Atmel AVRISP-MKII programmer, usable within AVRStudio. In its
+ *  most basic form, it allows for the programming of 5V AVRs from within AVRStudio with no special hardware other than
+ *  the USB AVR and the parts needed for the USB interface. If the user desires, more advanced circuits incorporating
+ *  level conversion can be made to allow for the programming of 3.3V AVR designs.
  *
  *  This device spoofs Atmel's official AVRISP-MKII device PID so that it remains compatible with Atmel's AVRISP-MKII
  *  drivers. When promted, direct your OS to install Atmel's AVRISP-MKII drivers provided with AVRStudio.
  *
+ *  Note that this design currently has several limitations:
+ *    - Minimum target clock speed of 500KHz due to hardware SPI used
+ *    - No VTARGET detection and notification
+ *    - No reversed/shorted target connector detection and notification
+ *
  *  \section SSec_Options Project Options
  *
  *  The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.

Projects/Incomplete/AVRISP/Lib/V2Protocol.c

@@ -264,7 +264,34 @@ static void V2Protocol_Command_ProgramMemory(uint8_t V2Command)
 	Endpoint_Read_Stream_LE(&Write_Memory_Params, sizeof(Write_Memory_Params));
 	Write_Memory_Params.BytesToWrite = SwapEndian_16(Write_Memory_Params.BytesToWrite);
 	
-	for (uint16_t CurrentByte = 0; CurrentByte < Write_Memory_Params.BytesToWrite; CurrentByte++)
+	if (Write_Memory_Params.ProgrammingMode & PROG_MODE_PAGED_WRITES_MASK)
+	{
+		for (uint16_t CurrentByte = 0; CurrentByte < Write_Memory_Params.BytesToWrite; CurrentByte++)
+		{
+			if ((V2Command == CMD_READ_FLASH_ISP) && (CurrentByte & 0x01))
+			  Write_Memory_Params.ProgrammingCommands[0] ^= READ_WRITE_ODD_BYTE_MASK;
+			  
+			SPI_SendByte(Write_Memory_Params.ProgrammingCommands[0]);
+			SPI_SendByte(CurrentAddress >> 8);
+			SPI_SendByte(CurrentAddress & 0xFF);
+			SPI_SendByte(Endpoint_Read_Byte());
+			
+			// TODO - Correct Polling
+
+			if (((V2Command == CMD_PROGRAM_FLASH_ISP) && (CurrentByte & 0x01)) || (V2Command == CMD_PROGRAM_EEPROM_ISP))
+			  CurrentAddress++;
+		}
+		
+		/* If the current page must be committed, send the PROGRAM PAGE command to the target */
+		if (Write_Memory_Params.ProgrammingMode & PROG_MODE_COMMIT_PAGE_MASK)
+		{
+			SPI_SendByte(Write_Memory_Params.ProgrammingCommands[1]);
+			SPI_SendByte(CurrentAddress >> 8);
+			SPI_SendByte(CurrentAddress & 0xFF);
+			SPI_SendByte(0x00);
+		}
+	}
+	else
 	{			
 		// TODO - Read in programming data, write to device		
 	}
@@ -312,7 +339,8 @@ static void V2Protocol_Command_ReadMemory(uint8_t V2Command)
 			Endpoint_WaitUntilReady();
 		}
 		
-		CurrentAddress++;
+		if (((V2Command == CMD_READ_FLASH_ISP) && (CurrentByte & 0x01)) || (V2Command == CMD_READ_EEPROM_ISP))
+		  CurrentAddress++;
 	}
 
 	Endpoint_Write_Byte(STATUS_CMD_OK);
@@ -377,7 +405,7 @@ static void V2Protocol_Command_ReadFuseLockSigOSCCAL(uint8_t V2Command)
 		
 	Endpoint_Write_Byte(V2Command);
 	Endpoint_Write_Byte(STATUS_CMD_OK);
-	Endpoint_Write_Byte(ResponseBytes[Read_FuseLockSigOSCCAL_Params.RetByte]);
+	Endpoint_Write_Byte(ResponseBytes[Read_FuseLockSigOSCCAL_Params.RetByte - 1]);
 	Endpoint_Write_Byte(STATUS_CMD_OK);
 	Endpoint_ClearIN();
 }

Projects/Incomplete/AVRISP/Lib/V2Protocol.h

@@ -45,10 +45,11 @@
 		#include "V2ProtocolTarget.h"
 
 	/* Macros: */
-		#define PROGRAMMER_ID             "AVRISP_MK2"
+		#define PROGRAMMER_ID                   "AVRISP_MK2"
 		
-		#define READ_WRITE_ODD_BYTE_MASK  (1 << 3)
+		#define READ_WRITE_ODD_BYTE_MASK        (1 << 3)
-		#define TARGET_MODE_PAGE_MASK     (1 << 0)
+		#define PROG_MODE_PAGED_WRITES_MASK     (1 << 0)
+		#define PROG_MODE_COMMIT_PAGE_MASK      (1 << 7)
 
 	/* Function Prototypes: */
 		void V2Protocol_ProcessCommand(void);

Projects/Incomplete/AVRISP/Lib/V2ProtocolParams.c

@@ -37,7 +37,7 @@
 #include "V2ProtocolParams.h"
 
 /* Non-Volatile Parameter Values for EEPROM storage */
-uint8_t EEMEM EEPROM_Rest_Polarity;
+uint8_t EEMEM EEPROM_Rest_Polarity = 0x00;
 
 /* Volatile Parameter Values for RAM storage */
 static ParameterItem_t ParameterTable[] = 
@@ -67,11 +67,11 @@ static ParameterItem_t ParameterTable[] =
 		  .ParamPrivellages = PARAM_PRIV_READ                    },
 
 		{ .ParamID          = PARAM_SCK_DURATION,
-		  .ParamValue       = 0xFF,
+		  .ParamValue       = 0x06,
 		  .ParamPrivellages = PARAM_PRIV_READ | PARAM_PRIV_WRITE },
 
 		{ .ParamID          = PARAM_RESET_POLARITY,
-		  .ParamValue       = 0x01,
+		  .ParamValue       = 0x00,
 		  .ParamPrivellages = PARAM_PRIV_WRITE                   },
 
 		{ .ParamID          = PARAM_STATUS_TGT_CONN,

Projects/Incomplete/AVRISP/Lib/V2ProtocolTarget.c

@@ -89,13 +89,13 @@ uint8_t V2Protocol_WaitWhileTargetBusy(void)
 	
 	do
 	{
-		V2Protocol_DelayMS(1);
-	
 		SPI_SendByte(0xF0);
 		SPI_SendByte(0x00);
 
 		SPI_SendByte(0x00);
 		ResponseByte = SPI_ReceiveByte();
+
+		V2Protocol_DelayMS(1);
 	}
 	while ((ResponseByte & 0x01) && (TimeoutMS--));
 

Projects/Incomplete/AVRISP/makefile

@@ -138,7 +138,6 @@ SRC = $(TARGET).c                                                 \
       Lib/V2Protocol.c                                            \
       Lib/V2ProtocolParams.c                                      \
       Lib/V2ProtocolTarget.c                                      \
-	  $(LUFA_PATH)/LUFA/Drivers/Peripheral/SerialStream.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               \