Fixed broken PDI EEPROM Section Erase functionality in the AVRISP-MKII project.

LUFA/ManPages/ChangeLog.txt

@@ -33,6 +33,7 @@
   *  - Fixed incorrect signature for the ATMEGA32U2 in the DFU bootloader (thanks to Axel Rohde)
   *  - Fixed internal device serial not being accessible on the ATMEGAXXU2 AVRs (thanks to Axel Rohde)
   *  - Fixed void pointer arithmetic in ConfigDescriptor.h breaking C++ compatibility (thanks to Michael Hennebry)
+  *  - Fixed broken PDI EEPROM Section Erase functionality in the AVRISP-MKII project
   *
   *  \section Sec_ChangeLog100513 Version 100513
   *  <b>New:</b>

LUFA/ManPages/FutureChanges.txt

@@ -33,7 +33,6 @@
   *      -# Finish StandaloneProgrammer project
   *      -# Finish MIDIToneGenerator project
   *      -# Correct mishandling of error cases in Mass Storage demos
-  *      -# Fix AVRISP-MKII clone project's XMEGA EEPROM section erase command
   *  - Ports
   *      -# AVR32 UC3B series microcontrollers
   *      -# Atmel ARM7 series microcontrollers

Projects/AVRISP-MKII/Lib/XPROG/XMEGANVM.c

@@ -325,21 +325,70 @@ bool XMEGANVM_EraseMemory(const uint8_t EraseCommand, const uint32_t Address)
 	if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
 	  return false;
 
+	/* EEPROM and Chip erasures are triggered differently to FLASH section erasures */
+	if (EraseCommand == XMEGA_NVM_CMD_CHIPERASE)
+	{
 		/* Send the memory erase command to the target */
 		XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
 		XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
 		XPROGTarget_SendByte(EraseCommand);
 	
-	/* Chip erase is handled separately, since it's procedure is different to other erase types */
-	if (EraseCommand == XMEGA_NVM_CMD_CHIPERASE)
+		/* Set CMDEX bit in NVM CTRLA register to start the erase sequence */
+		XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
+		XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CTRLA);
+		XPROGTarget_SendByte(1 << 0);	
+	}
+	else if (EraseCommand == XMEGA_NVM_CMD_ERASEEEPROM)
 	{
-		/* Set CMDEX bit in NVM CTRLA register to start the chip erase */
+		/* Send the EEPROM page buffer erase command to the target */
+		XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
+		XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
+		XPROGTarget_SendByte(XMEGA_NVM_CMD_ERASEEEPROMPAGEBUFF);
+
+		/* Set CMDEX bit in NVM CTRLA register to start the buffer erase */
+		XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
+		XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CTRLA);
+		XPROGTarget_SendByte(1 << 0);
+
+		/* Wait until the NVM controller is no longer busy */
+		if (!(XMEGANVM_WaitWhileNVMControllerBusy()))
+		  return false;
+
+		/* Send the EEPROM memory buffer write command to the target */
+		XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
+		XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
+		XPROGTarget_SendByte(XMEGA_NVM_CMD_LOADEEPROMPAGEBUFF);
+
+		/* Load the PDI pointer register with the EEPROM page start address */
+		XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_DIRECT << 2) | PDI_DATSIZE_4BYTES);
+		XMEGANVM_SendAddress(Address);
+
+		/* Send the REPEAT command with the specified number of bytes to write */
+		XPROGTarget_SendByte(PDI_CMD_REPEAT | PDI_DATSIZE_1BYTE);
+		XPROGTarget_SendByte(XPROG_Param_EEPageSize - 1);
+			
+		/* Send a ST command with indirect access and post-increment to tag each byte in the EEPROM page buffer */
+		XPROGTarget_SendByte(PDI_CMD_ST | (PDI_POINTER_INDIRECT_PI << 2) | PDI_DATSIZE_1BYTE);
+		for (uint8_t PageByte = 0; PageByte < XPROG_Param_EEPageSize; PageByte++)
+		  XPROGTarget_SendByte(0x00);
+	
+		/* Send the memory erase command to the target */
+		XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
+		XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
+		XPROGTarget_SendByte(EraseCommand);
+	
+		/* Set CMDEX bit in NVM CTRLA register to start the EEPROM erase sequence */
 		XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
 		XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CTRLA);
 		XPROGTarget_SendByte(1 << 0);		
 	}
 	else
 	{
+		/* Send the memory erase command to the target */
+		XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
+		XMEGANVM_SendNVMRegAddress(XMEGA_NVM_REG_CMD);
+		XPROGTarget_SendByte(EraseCommand);
+	
 		/* Other erase modes just need us to address a byte within the target memory space */
 		XPROGTarget_SendByte(PDI_CMD_STS | (PDI_DATSIZE_4BYTES << 2));
 		XMEGANVM_SendAddress(Address);

Projects/AVRISP-MKII/Lib/XPROG/XPROGProtocol.c

@@ -41,13 +41,13 @@
 uint32_t XPROG_Param_NVMBase       = 0x010001C0;
 
 /** Size in bytes of the target's EEPROM page */
-uint16_t XPROG_Param_EEPageSize;
+uint16_t XPROG_Param_EEPageSize    = 32;
 
 /** Address of the TPI device's NVMCMD register for TPI programming */
-uint8_t  XPROG_Param_NVMCMDRegAddr;
+uint8_t  XPROG_Param_NVMCMDRegAddr = 0x33;
 
 /** Address of the TPI device's NVMCSR register for TPI programming */
-uint8_t  XPROG_Param_NVMCSRRegAddr;
+uint8_t  XPROG_Param_NVMCSRRegAddr = 0x32;
 
 /** Currently selected XPROG programming protocol */
 uint8_t  XPROG_SelectedProtocol    = XPRG_PROTOCOL_PDI;