X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/d4ca7fb44c7d326b96cf391f0275dc323dbe24de..03ee87b35abdb8b92e8b55ec040fa943f9a6786c:/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c?ds=inline

diff --git a/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c b/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c
index 0bdafc2ac..573f8fde5 100644
--- a/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c
+++ b/Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c
@@ -1,13 +1,13 @@
 /*
              LUFA Library
-     Copyright (C) Dean Camera, 2009.
+     Copyright (C) Dean Camera, 2010.
               
   dean [at] fourwalledcubicle [dot] com
       www.fourwalledcubicle.com
 */
 
 /*
-  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)
 
   Permission to use, copy, modify, distribute, and sell this 
   software and its documentation for any purpose is hereby granted
@@ -136,24 +136,18 @@ bool XMEGANVM_GetMemoryCRC(const uint8_t CRCCommand, uint32_t* const CRCDest)
 	if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
 	  return false;
 	
-	uint32_t MemoryCRC = 0;
-	
-	/* Read the first generated CRC byte value */
-	XPROGTarget_SendByte(PDI_CMD_LDS | (PDI_DATSIZE_4BYTES << 2));
+	/* Load the PDI pointer register with the DAT0 register start address */
+	XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_DIRECT << 2) | PDI_DATSIZE_4BYTES);
 	XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_DAT0);
-	MemoryCRC  = XPROGTarget_ReceiveByte();
-
-	/* Read the second generated CRC byte value */
-	XPROGTarget_SendByte(PDI_CMD_LDS | (PDI_DATSIZE_4BYTES << 2));
-	XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_DAT1);
-	MemoryCRC |= ((uint16_t)XPROGTarget_ReceiveByte() << 8);
 
-	/* Read the third generated CRC byte value */
-	XPROGTarget_SendByte(PDI_CMD_LDS | (PDI_DATSIZE_4BYTES << 2));
-	XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_DAT2);
-	MemoryCRC |= ((uint32_t)XPROGTarget_ReceiveByte() << 16);
+	/* Send the REPEAT command to grab the CRC bytes */
+	XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE);
+	XPROGTarget_SendByte(XMEGA_CRC_LENGTH - 1);
 	
-	*CRCDest = MemoryCRC;
+	/* Read in the CRC bytes from the target */
+	XPROGTarget_SendByte(PDI_CMD_LD | (PDI_POINTER_INDIRECT_PI << 2) | PDI_DATSIZE_1BYTE);
+	for (uint8_t i = 0; i < XMEGA_CRC_LENGTH; i++)
+	  ((uint8_t*)CRCDest)[i] = XPROGTarget_ReceiveByte();
 	
 	return true;
 }
@@ -196,12 +190,12 @@ bool XMEGANVM_ReadMemory(const uint32_t ReadAddress, uint8_t* ReadBuffer, uint16
 /** Writes byte addressed memory to the target's memory spaces.
  *
  *  \param[in]  WriteCommand  Command to send to the device to write each memory byte
- *  \param[in]  WriteAddress  Start address to write to within the target's address space
- *  \param[in]  WriteBuffer   Buffer to source data from
+ *  \param[in]  WriteAddress  Address to write to within the target's address space
+ *  \param[in]  Byte          Byte to write to the target
  *
  *  \return Boolean true if the command sequence complete successfully
  */
-bool XMEGANVM_WriteByteMemory(const uint8_t WriteCommand, const uint32_t WriteAddress, const uint8_t* WriteBuffer)
+bool XMEGANVM_WriteByteMemory(const uint8_t WriteCommand, const uint32_t WriteAddress, const uint8_t Byte)
 {
 	/* Wait until the NVM controller is no longer busy */
 	if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
@@ -215,7 +209,7 @@ bool XMEGANVM_WriteByteMemory(const uint8_t WriteCommand, const uint32_t WriteAd
 	/* Send new memory byte to the memory to the target */
 	XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
 	XMEGANVM_SendAddress(WriteAddress);
-	XPROGTarget_SendByte(*(WriteBuffer++));
+	XPROGTarget_SendByte(Byte);
 	
 	return true;
 }