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295 lines
8.8 KiB
295 lines
8.8 KiB
/*
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LUFA Library
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Copyright (C) Dean Camera, 2009.
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dean [at] fourwalledcubicle [dot] com
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www.fourwalledcubicle.com
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*/
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/*
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Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, and distribute this software
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and its documentation for any purpose and without fee is hereby
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granted, provided that the above copyright notice appear in all
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copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaim all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#if defined(ENABLE_XPROG_PROTOCOL)
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#warning PDI Programming Protocol support is incomplete and not currently suitable for use.
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/** \file
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*
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* PDI Protocol handler, to process V2 Protocol wrapped PDI commands used in Atmel programmer devices.
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*/
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#define INCLUDE_FROM_PDIPROTOCOL_C
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#include "PDIProtocol.h"
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uint32_t XPROG_Param_NVMBase;
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uint32_t XPROG_Param_EEPageSize;
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/** Handler for the CMD_XPROG_SETMODE command, which sets the programmer-to-target protocol used for PDI
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* XMEGA programming (either PDI or JTAG). Only PDI programming is supported.
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*/
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void PDIProtocol_XPROG_SetMode(void)
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{
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struct
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{
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uint8_t Protocol;
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} SetMode_XPROG_Params;
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Endpoint_Read_Stream_LE(&SetMode_XPROG_Params, sizeof(SetMode_XPROG_Params));
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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Endpoint_Write_Byte(CMD_XPROG_SETMODE);
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Endpoint_Write_Byte(SetMode_XPROG_Params.Protocol ? STATUS_CMD_FAILED : STATUS_CMD_OK);
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Endpoint_ClearIN();
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}
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/** Handler for the CMD_XPROG command, which wraps up XPROG commands in a V2 wrapper which need to be
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* removed and processed so that the underlying XPROG command can be handled.
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*/
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void PDIProtocol_XPROG_Command(void)
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{
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uint8_t XPROGCommand = Endpoint_Read_Byte();
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switch (XPROGCommand)
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{
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case XPRG_CMD_ENTER_PROGMODE:
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PDIProtocol_EnterXPROGMode();
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break;
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case XPRG_CMD_LEAVE_PROGMODE:
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PDIProtocol_LeaveXPROGMode();
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break;
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case XPRG_CMD_ERASE:
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PDIProtocol_Erase();
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break;
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case XPRG_CMD_WRITE_MEM:
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PDIProtocol_WriteMemory();
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break;
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case XPRG_CMD_READ_MEM:
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PDIProtocol_ReadMemory();
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break;
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case XPRG_CMD_CRC:
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PDIProtocol_ReadCRC();
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break;
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case XPRG_CMD_SET_PARAM:
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PDIProtocol_SetParam();
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break;
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}
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}
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/** Handler for the XPROG ENTER_PROGMODE command to establish a PDI connection with the attached device. */
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static void PDIProtocol_EnterXPROGMode(void)
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{
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uint8_t ReturnStatus = XPRG_ERR_OK;
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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PDIDATA_LINE_DDR |= PDIDATA_LINE_MASK;
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PDICLOCK_LINE_DDR |= PDICLOCK_LINE_MASK;
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/* Must hold DATA line high for at least 90nS to enable PDI interface */
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PDIDATA_LINE_PORT |= PDIDATA_LINE_MASK;
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_delay_us(1);
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/* Toggle CLOCK line 16 times within 100uS of the original 90nS timeout to keep PDI interface enabled */
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for (uint8_t i = 0; i < 16; i++)
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TOGGLE_PDI_CLOCK;
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/* Enable access to the XPROG NVM bus by sending the documented NVM access key to the device */
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PDITarget_SendByte(PDI_CMD_KEY);
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for (uint8_t i = 0; i < 8; i++)
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PDITarget_SendByte(PDI_NVMENABLE_KEY[i]);
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/* Read out the STATUS register to check that NVM access was successfully enabled */
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PDITarget_SendByte(PDI_CMD_LDCS | PD_STATUS_REG);
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if (!(PDITarget_ReceiveByte() & PDI_STATUS_NVM))
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ReturnStatus = XPRG_ERR_FAILED;
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Endpoint_Write_Byte(CMD_XPROG);
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Endpoint_Write_Byte(XPRG_CMD_ENTER_PROGMODE);
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Endpoint_Write_Byte(ReturnStatus);
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Endpoint_ClearIN();
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}
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/** Handler for the XPROG LEAVE_PROGMODE command to terminate the PDI programming connection with
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* the attached device.
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*/
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static void PDIProtocol_LeaveXPROGMode(void)
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{
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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/* Set DATA and CLOCK lines to inputs */
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PDIDATA_LINE_DDR &= ~PDIDATA_LINE_MASK;
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PDICLOCK_LINE_DDR &= ~PDICLOCK_LINE_MASK;
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/* Tristate DATA and CLOCK lines */
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PDIDATA_LINE_PORT &= ~PDIDATA_LINE_MASK;
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PDICLOCK_LINE_PORT &= ~PDICLOCK_LINE_MASK;
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Endpoint_Write_Byte(CMD_XPROG);
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Endpoint_Write_Byte(XPRG_CMD_LEAVE_PROGMODE);
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Endpoint_Write_Byte(XPRG_ERR_OK);
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Endpoint_ClearIN();
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}
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/** Handler for the XPRG ERASE command to erase a specific memory address space in the attached device. */
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static void PDIProtocol_Erase(void)
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{
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uint8_t ReturnStatus = XPRG_ERR_OK;
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struct
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{
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uint8_t MemoryType;
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uint32_t Address;
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} Erase_XPROG_Params;
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Endpoint_Read_Stream_LE(&Erase_XPROG_Params, sizeof(Erase_XPROG_Params));
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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// TODO: Send erase command here via PDI protocol
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Endpoint_Write_Byte(CMD_XPROG);
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Endpoint_Write_Byte(XPRG_CMD_ERASE);
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Endpoint_Write_Byte(ReturnStatus);
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Endpoint_ClearIN();
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}
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/** Handler for the XPROG WRITE_MEMORY command to write to a specific memory space within the attached device. */
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static void PDIProtocol_WriteMemory(void)
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{
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uint8_t ReturnStatus = XPRG_ERR_OK;
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struct
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{
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uint8_t MemoryType;
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uint32_t Address;
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uint16_t Length;
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uint8_t ProgData[256];
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} WriteMemory_XPROG_Params;
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Endpoint_Read_Stream_LE(&WriteMemory_XPROG_Params, (sizeof(WriteMemory_XPROG_Params) -
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sizeof(WriteMemory_XPROG_Params).ProgData));
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WriteMemory_XPROG_Params.Address = SwapEndian_32(WriteMemory_XPROG_Params.Address);
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WriteMemory_XPROG_Params.Length = SwapEndian_16(WriteMemory_XPROG_Params.Length);
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Endpoint_Read_Stream_LE(&WriteMemory_XPROG_Params.ProgData, WriteMemory_XPROG_Params.Length);
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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// TODO: Send program command here via PDI protocol
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Endpoint_Write_Byte(CMD_XPROG);
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Endpoint_Write_Byte(XPRG_CMD_READ_MEM);
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Endpoint_Write_Byte(ReturnStatus);
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Endpoint_ClearIN();
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}
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/** Handler for the XPROG READ_MEMORY command to read data from a specific address space within the
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* attached device.
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*/
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static void PDIProtocol_ReadMemory(void)
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{
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uint8_t ReturnStatus = XPRG_ERR_OK;
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struct
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{
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uint8_t MemoryType;
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uint32_t Address;
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uint16_t Length;
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} ReadMemory_XPROG_Params;
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Endpoint_Read_Stream_LE(&ReadMemory_XPROG_Params, sizeof(ReadMemory_XPROG_Params));
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ReadMemory_XPROG_Params.Address = SwapEndian_32(ReadMemory_XPROG_Params.Address);
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ReadMemory_XPROG_Params.Length = SwapEndian_16(ReadMemory_XPROG_Params.Length);
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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// TODO: Send read command here via PDI protocol
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Endpoint_Write_Byte(CMD_XPROG);
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Endpoint_Write_Byte(XPRG_CMD_READ_MEM);
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Endpoint_Write_Byte(ReturnStatus);
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Endpoint_ClearIN();
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}
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/** Handler for the XPROG CRC command to read a specific memory space's CRC value for comparison between the
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* attached device's memory and a data set on the host.
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*/
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static void PDIProtocol_ReadCRC(void)
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{
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uint8_t ReturnStatus = XPRG_ERR_OK;
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uint8_t CRCType = Endpoint_Read_Byte();
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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uint32_t MemoryCRC = 0;
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// TODO: Read device CRC for desired memory via PDI protocol
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Endpoint_Write_Byte(CMD_XPROG);
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Endpoint_Write_Byte(XPRG_CMD_CRC);
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Endpoint_Write_Byte(ReturnStatus);
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if (ReturnStatus == XPRG_ERR_OK)
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{
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Endpoint_Write_Byte(MemoryCRC >> 16);
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Endpoint_Write_Word_LE(MemoryCRC & 0xFFFF);
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}
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Endpoint_ClearIN();
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}
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/** Handler for the XPROG SET_PARAM command to set a PDI parameter for use when communicating with the
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* attached device.
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*/
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static void PDIProtocol_SetParam(void)
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{
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uint8_t ReturnStatus = XPRG_ERR_OK;
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uint8_t XPROGParam = Endpoint_Read_Byte();
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if (XPROGParam == XPRG_PARAM_NVMBASE)
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XPROG_Param_NVMBase = Endpoint_Read_DWord_LE();
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else if (XPROGParam == XPRG_PARAM_EEPPAGESIZE)
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XPROG_Param_EEPageSize = Endpoint_Read_Word_LE();
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else
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ReturnStatus = XPRG_ERR_FAILED;
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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Endpoint_Write_Byte(CMD_XPROG);
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Endpoint_Write_Byte(XPRG_CMD_SET_PARAM);
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Endpoint_Write_Byte(ReturnStatus);
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Endpoint_ClearIN();
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}
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#endif
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