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620 lines
19 KiB
620 lines
19 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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/** \file
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*
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* V2Protocol handler, to process V2 Protocol commands used in Atmel programmer devices.
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*/
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#define INCLUDE_FROM_V2PROTOCOL_C
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#include "V2Protocol.h"
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/** Master V2 Protocol packet handler, for received V2 Protocol packets from a connected host.
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* This routine decodes the issued command and passes off the handling of the command to the
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* appropriate function.
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*/
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void V2Protocol_ProcessCommand(void)
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{
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uint8_t V2Command = Endpoint_Read_Byte();
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switch (V2Command)
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{
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case CMD_SIGN_ON:
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V2Protocol_Command_SignOn();
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break;
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case CMD_SET_PARAMETER:
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case CMD_GET_PARAMETER:
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V2Protocol_Command_GetSetParam(V2Command);
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break;
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case CMD_LOAD_ADDRESS:
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V2Protocol_Command_LoadAddress();
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break;
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case CMD_RESET_PROTECTION:
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V2Protocol_Command_ResetProtection();
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break;
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case CMD_ENTER_PROGMODE_ISP:
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V2Protocol_Command_EnterISPMode();
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break;
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case CMD_LEAVE_PROGMODE_ISP:
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V2Protocol_Command_LeaveISPMode();
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break;
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case CMD_PROGRAM_FLASH_ISP:
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case CMD_PROGRAM_EEPROM_ISP:
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V2Protocol_Command_ProgramMemory(V2Command);
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break;
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case CMD_READ_FLASH_ISP:
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case CMD_READ_EEPROM_ISP:
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V2Protocol_Command_ReadMemory(V2Command);
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break;
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case CMD_CHIP_ERASE_ISP:
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V2Protocol_Command_ChipErase();
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break;
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case CMD_READ_FUSE_ISP:
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case CMD_READ_LOCK_ISP:
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case CMD_READ_SIGNATURE_ISP:
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case CMD_READ_OSCCAL_ISP:
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V2Protocol_Command_ReadFuseLockSigOSCCAL(V2Command);
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break;
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case CMD_PROGRAM_FUSE_ISP:
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case CMD_PROGRAM_LOCK_ISP:
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V2Protocol_Command_WriteFuseLock(V2Command);
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break;
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case CMD_SPI_MULTI:
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V2Protocol_Command_SPIMulti();
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break;
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default:
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V2Protocol_Command_Unknown(V2Command);
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break;
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}
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Endpoint_WaitUntilReady();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_OUT);
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}
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/** Handler for unknown V2 protocol commands. This discards all sent data and returns a
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* STATUS_CMD_UNKNOWN status back to the host.
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*
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* \param[in] V2Command Issued V2 Protocol command byte from the host
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*/
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static void V2Protocol_Command_Unknown(uint8_t V2Command)
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{
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/* Discard all incoming data */
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while (Endpoint_BytesInEndpoint() == AVRISP_DATA_EPSIZE)
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{
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Endpoint_ClearOUT();
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Endpoint_WaitUntilReady();
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}
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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Endpoint_Write_Byte(V2Command);
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Endpoint_Write_Byte(STATUS_CMD_UNKNOWN);
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Endpoint_ClearIN();
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}
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/** Handler for the CMD_SIGN_ON command, returning the programmer ID string to the host. */
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static void V2Protocol_Command_SignOn(void)
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{
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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Endpoint_Write_Byte(CMD_SIGN_ON);
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Endpoint_Write_Byte(STATUS_CMD_OK);
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Endpoint_Write_Byte(sizeof(PROGRAMMER_ID) - 1);
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Endpoint_Write_Stream_LE(PROGRAMMER_ID, (sizeof(PROGRAMMER_ID) - 1));
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Endpoint_ClearIN();
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}
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/** Handler for the CMD_SET_PARAMETER and CMD_GET_PARAMETER commands from the host, setting or
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* getting a device parameter's value from the parameter table.
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*
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* \param[in] V2Command Issued V2 Protocol command byte from the host
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*/
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static void V2Protocol_Command_GetSetParam(uint8_t V2Command)
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{
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uint8_t ParamID = Endpoint_Read_Byte();
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uint8_t ParamValue;
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if (V2Command == CMD_SET_PARAMETER)
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ParamValue = Endpoint_Read_Byte();
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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Endpoint_Write_Byte(V2Command);
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uint8_t ParamPrivs = V2Params_GetParameterPrivileges(ParamID);
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if ((V2Command == CMD_SET_PARAMETER) && (ParamPrivs & PARAM_PRIV_WRITE))
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{
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Endpoint_Write_Byte(STATUS_CMD_OK);
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V2Params_SetParameterValue(ParamID, ParamValue);
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}
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else if ((V2Command == CMD_GET_PARAMETER) && (ParamPrivs & PARAM_PRIV_READ))
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{
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Endpoint_Write_Byte(STATUS_CMD_OK);
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Endpoint_Write_Byte(V2Params_GetParameterValue(ParamID));
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}
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else
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{
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Endpoint_Write_Byte(STATUS_CMD_FAILED);
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}
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Endpoint_ClearIN();
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}
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/** Handler for the CMD_LOAD_ADDRESS command, loading the given device address into a
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* global storage variable for later use, and issuing LOAD EXTENDED ADDRESS commands
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* to the attached device as required.
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*/
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static void V2Protocol_Command_LoadAddress(void)
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{
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Endpoint_Read_Stream_BE(&CurrentAddress, sizeof(CurrentAddress));
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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if (CurrentAddress & (1UL << 31))
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V2Protocol_LoadExtendedAddress();
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Endpoint_Write_Byte(CMD_LOAD_ADDRESS);
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Endpoint_Write_Byte(STATUS_CMD_OK);
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Endpoint_ClearIN();
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}
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/** Handler for the CMD_RESET_PROTECTION command, currently implemented as a dummy ACK function
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* as no ISP short-circuit protection is currently implemented.
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*/
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static void V2Protocol_Command_ResetProtection(void)
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{
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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Endpoint_Write_Byte(CMD_RESET_PROTECTION);
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Endpoint_Write_Byte(STATUS_CMD_OK);
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Endpoint_ClearIN();
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}
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/** Handler for the CMD_ENTER_PROGMODE_ISP command, which attempts to enter programming mode on
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* the attached device, returning success or failure back to the host.
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*/
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static void V2Protocol_Command_EnterISPMode(void)
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{
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struct
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{
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uint8_t TimeoutMS;
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uint8_t PinStabDelayMS;
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uint8_t ExecutionDelayMS;
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uint8_t SynchLoops;
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uint8_t ByteDelay;
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uint8_t PollValue;
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uint8_t PollIndex;
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uint8_t EnterProgBytes[4];
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} Enter_ISP_Params;
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Endpoint_Read_Stream_LE(&Enter_ISP_Params, sizeof(Enter_ISP_Params));
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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uint8_t ResponseStatus = STATUS_CMD_FAILED;
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CurrentAddress = 0;
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V2Protocol_DelayMS(Enter_ISP_Params.ExecutionDelayMS);
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SPI_Init(V2Protocol_GetSPIPrescalerMask() | SPI_SCK_LEAD_RISING | SPI_SAMPLE_LEADING | SPI_MODE_MASTER);
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while (Enter_ISP_Params.SynchLoops-- && (ResponseStatus == STATUS_CMD_FAILED))
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{
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uint8_t ResponseBytes[4];
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V2Protocol_ChangeTargetResetLine(true);
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V2Protocol_DelayMS(Enter_ISP_Params.PinStabDelayMS);
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for (uint8_t RByte = 0; RByte < sizeof(ResponseBytes); RByte++)
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{
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V2Protocol_DelayMS(Enter_ISP_Params.ByteDelay);
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ResponseBytes[RByte] = SPI_TransferByte(Enter_ISP_Params.EnterProgBytes[RByte]);
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}
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/* Check if polling disabled, or if the polled value matches the expected value */
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if (!(Enter_ISP_Params.PollIndex) || (ResponseBytes[Enter_ISP_Params.PollIndex - 1] == Enter_ISP_Params.PollValue))
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{
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ResponseStatus = STATUS_CMD_OK;
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}
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else
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{
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V2Protocol_ChangeTargetResetLine(false);
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V2Protocol_DelayMS(Enter_ISP_Params.PinStabDelayMS);
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}
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}
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Endpoint_Write_Byte(CMD_ENTER_PROGMODE_ISP);
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Endpoint_Write_Byte(ResponseStatus);
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Endpoint_ClearIN();
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}
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/** Handler for the CMD_LEAVE_ISP command, which releases the target from programming mode. */
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static void V2Protocol_Command_LeaveISPMode(void)
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{
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struct
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{
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uint8_t PreDelayMS;
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uint8_t PostDelayMS;
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} Leave_ISP_Params;
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Endpoint_Read_Stream_LE(&Leave_ISP_Params, sizeof(Leave_ISP_Params));
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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V2Protocol_DelayMS(Leave_ISP_Params.PreDelayMS);
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V2Protocol_ChangeTargetResetLine(false);
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SPI_ShutDown();
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V2Protocol_DelayMS(Leave_ISP_Params.PostDelayMS);
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Endpoint_Write_Byte(CMD_LEAVE_PROGMODE_ISP);
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Endpoint_Write_Byte(STATUS_CMD_OK);
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Endpoint_ClearIN();
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}
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/** Handler for the CMD_PROGRAM_FLASH_ISP and CMD_PROGRAM_EEPROM_ISP commands, writing out bytes,
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* words or pages of data to the attached device.
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*
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* \param[in] V2Command Issued V2 Protocol command byte from the host
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*/
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static void V2Protocol_Command_ProgramMemory(uint8_t V2Command)
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{
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struct
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{
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uint16_t BytesToWrite;
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uint8_t ProgrammingMode;
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uint8_t DelayMS;
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uint8_t ProgrammingCommands[3];
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uint8_t PollValue1;
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uint8_t PollValue2;
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uint8_t ProgData[256]; // Note, the Jungo driver has a very short ACK timeout period, need to buffer the
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} Write_Memory_Params; // whole page and ACK the packet as fast as possible to prevent it from aborting
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Endpoint_Read_Stream_LE(&Write_Memory_Params, sizeof(Write_Memory_Params) - sizeof(Write_Memory_Params.ProgData));
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Write_Memory_Params.BytesToWrite = SwapEndian_16(Write_Memory_Params.BytesToWrite);
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if (Write_Memory_Params.BytesToWrite > sizeof(Write_Memory_Params.ProgData))
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{
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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Endpoint_Write_Byte(V2Command);
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Endpoint_Write_Byte(STATUS_CMD_FAILED);
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Endpoint_ClearIN();
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return;
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}
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Endpoint_Read_Stream_LE(&Write_Memory_Params.ProgData, Write_Memory_Params.BytesToWrite);
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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uint8_t ProgrammingStatus = STATUS_CMD_OK;
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uint16_t PollAddress = 0;
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uint8_t PollValue = (V2Command == CMD_PROGRAM_FLASH_ISP) ? Write_Memory_Params.PollValue1 :
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Write_Memory_Params.PollValue2;
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uint8_t* NextWriteByte = Write_Memory_Params.ProgData;
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if (Write_Memory_Params.ProgrammingMode & PROG_MODE_PAGED_WRITES_MASK)
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{
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uint16_t StartAddress = (CurrentAddress & 0xFFFF);
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/* Paged mode memory programming */
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for (uint16_t CurrentByte = 0; CurrentByte < Write_Memory_Params.BytesToWrite; CurrentByte++)
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{
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bool IsOddByte = (CurrentByte & 0x01);
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uint8_t ByteToWrite = *(NextWriteByte++);
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if (IsOddByte && (V2Command == CMD_PROGRAM_FLASH_ISP))
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Write_Memory_Params.ProgrammingCommands[0] |= READ_WRITE_HIGH_BYTE_MASK;
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else
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Write_Memory_Params.ProgrammingCommands[0] &= ~READ_WRITE_HIGH_BYTE_MASK;
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SPI_SendByte(Write_Memory_Params.ProgrammingCommands[0]);
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SPI_SendByte(CurrentAddress >> 8);
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SPI_SendByte(CurrentAddress & 0xFF);
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SPI_SendByte(ByteToWrite);
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if (!(PollAddress) && (ByteToWrite != PollValue))
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{
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if (IsOddByte && (V2Command == CMD_PROGRAM_FLASH_ISP))
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Write_Memory_Params.ProgrammingCommands[2] |= READ_WRITE_HIGH_BYTE_MASK;
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PollAddress = (CurrentAddress & 0xFFFF);
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}
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if (IsOddByte || (V2Command == CMD_PROGRAM_EEPROM_ISP))
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CurrentAddress++;
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}
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/* If the current page must be committed, send the PROGRAM PAGE command to the target */
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if (Write_Memory_Params.ProgrammingMode & PROG_MODE_COMMIT_PAGE_MASK)
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{
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SPI_SendByte(Write_Memory_Params.ProgrammingCommands[1]);
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SPI_SendByte(StartAddress >> 8);
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SPI_SendByte(StartAddress & 0xFF);
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SPI_SendByte(0x00);
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/* Check if polling is possible, if not switch to timed delay mode */
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if (!(PollAddress))
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{
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Write_Memory_Params.ProgrammingMode &= ~PROG_MODE_PAGED_VALUE_MASK;
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Write_Memory_Params.ProgrammingMode |= PROG_MODE_PAGED_TIMEDELAY_MASK;
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}
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ProgrammingStatus = V2Protocol_WaitForProgComplete(Write_Memory_Params.ProgrammingMode, PollAddress, PollValue,
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Write_Memory_Params.DelayMS, Write_Memory_Params.ProgrammingCommands[2]);
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}
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}
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else
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{
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/* Word/byte mode memory programming */
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for (uint16_t CurrentByte = 0; CurrentByte < Write_Memory_Params.BytesToWrite; CurrentByte++)
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{
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bool IsOddByte = (CurrentByte & 0x01);
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uint8_t ByteToWrite = *(NextWriteByte++);
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if (IsOddByte && (V2Command == CMD_READ_FLASH_ISP))
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Write_Memory_Params.ProgrammingCommands[0] |= READ_WRITE_HIGH_BYTE_MASK;
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else
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Write_Memory_Params.ProgrammingCommands[0] &= ~READ_WRITE_HIGH_BYTE_MASK;
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SPI_SendByte(Write_Memory_Params.ProgrammingCommands[0]);
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SPI_SendByte(CurrentAddress >> 8);
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SPI_SendByte(CurrentAddress & 0xFF);
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SPI_SendByte(ByteToWrite);
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if (ByteToWrite != PollValue)
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{
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if (IsOddByte && (V2Command == CMD_PROGRAM_FLASH_ISP))
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Write_Memory_Params.ProgrammingCommands[2] |= READ_WRITE_HIGH_BYTE_MASK;
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PollAddress = (CurrentAddress & 0xFFFF);
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}
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if (IsOddByte || (V2Command == CMD_PROGRAM_EEPROM_ISP))
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CurrentAddress++;
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ProgrammingStatus = V2Protocol_WaitForProgComplete(Write_Memory_Params.ProgrammingMode, PollAddress, PollValue,
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Write_Memory_Params.DelayMS, Write_Memory_Params.ProgrammingCommands[2]);
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if (ProgrammingStatus != STATUS_CMD_OK)
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break;
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}
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}
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Endpoint_Write_Byte(V2Command);
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Endpoint_Write_Byte(ProgrammingStatus);
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Endpoint_ClearIN();
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}
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/** Handler for the CMD_READ_FLASH_ISP and CMD_READ_EEPROM_ISP commands, reading in bytes,
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* words or pages of data from the attached device.
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*
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* \param[in] V2Command Issued V2 Protocol command byte from the host
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*/
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static void V2Protocol_Command_ReadMemory(uint8_t V2Command)
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{
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struct
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{
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uint16_t BytesToRead;
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uint8_t ReadMemoryCommand;
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} Read_Memory_Params;
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Endpoint_Read_Stream_LE(&Read_Memory_Params, sizeof(Read_Memory_Params));
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Read_Memory_Params.BytesToRead = SwapEndian_16(Read_Memory_Params.BytesToRead);
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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Endpoint_Write_Byte(V2Command);
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Endpoint_Write_Byte(STATUS_CMD_OK);
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for (uint16_t CurrentByte = 0; CurrentByte < Read_Memory_Params.BytesToRead; CurrentByte++)
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{
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bool IsOddByte = (CurrentByte & 0x01);
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if (IsOddByte && (V2Command == CMD_READ_FLASH_ISP))
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Read_Memory_Params.ReadMemoryCommand |= READ_WRITE_HIGH_BYTE_MASK;
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else
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Read_Memory_Params.ReadMemoryCommand &= ~READ_WRITE_HIGH_BYTE_MASK;
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SPI_SendByte(Read_Memory_Params.ReadMemoryCommand);
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SPI_SendByte(CurrentAddress >> 8);
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SPI_SendByte(CurrentAddress & 0xFF);
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Endpoint_Write_Byte(SPI_ReceiveByte());
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/* Check if the endpoint bank is currently full */
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if (!(Endpoint_IsReadWriteAllowed()))
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{
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Endpoint_ClearIN();
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Endpoint_WaitUntilReady();
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}
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if ((IsOddByte && (V2Command == CMD_READ_FLASH_ISP)) || (V2Command == CMD_READ_EEPROM_ISP))
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CurrentAddress++;
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}
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Endpoint_Write_Byte(STATUS_CMD_OK);
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bool IsEndpointFull = !(Endpoint_IsReadWriteAllowed());
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Endpoint_ClearIN();
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/* Ensure last packet is a short packet to terminate the transfer */
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if (IsEndpointFull)
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{
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Endpoint_WaitUntilReady();
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Endpoint_ClearIN();
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Endpoint_WaitUntilReady();
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}
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}
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/** Handler for the CMD_CHI_ERASE_ISP command, clearing the target's FLASH memory. */
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static void V2Protocol_Command_ChipErase(void)
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{
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struct
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{
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uint8_t EraseDelayMS;
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uint8_t PollMethod;
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uint8_t EraseCommandBytes[4];
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} Erase_Chip_Params;
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Endpoint_Read_Stream_LE(&Erase_Chip_Params, sizeof(Erase_Chip_Params));
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Endpoint_ClearOUT();
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Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
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uint8_t ResponseStatus = STATUS_CMD_OK;
|
|
|
|
for (uint8_t SByte = 0; SByte < sizeof(Erase_Chip_Params.EraseCommandBytes); SByte++)
|
|
SPI_SendByte(Erase_Chip_Params.EraseCommandBytes[SByte]);
|
|
|
|
if (!(Erase_Chip_Params.PollMethod))
|
|
V2Protocol_DelayMS(Erase_Chip_Params.EraseDelayMS);
|
|
else
|
|
ResponseStatus = V2Protocol_WaitWhileTargetBusy();
|
|
|
|
Endpoint_Write_Byte(CMD_CHIP_ERASE_ISP);
|
|
Endpoint_Write_Byte(ResponseStatus);
|
|
Endpoint_ClearIN();
|
|
}
|
|
|
|
/** Handler for the CMD_READ_FUSE_ISP, CMD_READ_LOCK_ISP, CMD_READ_SIGNATURE_ISP and CMD_READ_OSCCAL commands,
|
|
* reading the requested configuration byte from the device.
|
|
*
|
|
* \param[in] V2Command Issued V2 Protocol command byte from the host
|
|
*/
|
|
static void V2Protocol_Command_ReadFuseLockSigOSCCAL(uint8_t V2Command)
|
|
{
|
|
struct
|
|
{
|
|
uint8_t RetByte;
|
|
uint8_t ReadCommandBytes[4];
|
|
} Read_FuseLockSigOSCCAL_Params;
|
|
|
|
Endpoint_Read_Stream_LE(&Read_FuseLockSigOSCCAL_Params, sizeof(Read_FuseLockSigOSCCAL_Params));
|
|
|
|
Endpoint_ClearOUT();
|
|
Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
|
|
|
|
uint8_t ResponseBytes[4];
|
|
|
|
for (uint8_t RByte = 0; RByte < sizeof(ResponseBytes); RByte++)
|
|
ResponseBytes[RByte] = SPI_TransferByte(Read_FuseLockSigOSCCAL_Params.ReadCommandBytes[RByte]);
|
|
|
|
Endpoint_Write_Byte(V2Command);
|
|
Endpoint_Write_Byte(STATUS_CMD_OK);
|
|
Endpoint_Write_Byte(ResponseBytes[Read_FuseLockSigOSCCAL_Params.RetByte - 1]);
|
|
Endpoint_Write_Byte(STATUS_CMD_OK);
|
|
Endpoint_ClearIN();
|
|
}
|
|
|
|
/** Handler for the CMD_WRITE_FUSE_ISP and CMD_WRITE_LOCK_ISP commands, writing the requested configuration
|
|
* byte to the device.
|
|
*
|
|
* \param[in] V2Command Issued V2 Protocol command byte from the host
|
|
*/
|
|
static void V2Protocol_Command_WriteFuseLock(uint8_t V2Command)
|
|
{
|
|
struct
|
|
{
|
|
uint8_t WriteCommandBytes[4];
|
|
} Write_FuseLockSig_Params;
|
|
|
|
Endpoint_Read_Stream_LE(&Write_FuseLockSig_Params, sizeof(Write_FuseLockSig_Params));
|
|
|
|
Endpoint_ClearOUT();
|
|
Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
|
|
|
|
for (uint8_t SByte = 0; SByte < sizeof(Write_FuseLockSig_Params.WriteCommandBytes); SByte++)
|
|
SPI_SendByte(Write_FuseLockSig_Params.WriteCommandBytes[SByte]);
|
|
|
|
Endpoint_Write_Byte(V2Command);
|
|
Endpoint_Write_Byte(STATUS_CMD_OK);
|
|
Endpoint_Write_Byte(STATUS_CMD_OK);
|
|
Endpoint_ClearIN();
|
|
}
|
|
|
|
/** Handler for the CMD_SPI_MULTI command, writing and reading arbitrary SPI data to and from the attached device. */
|
|
static void V2Protocol_Command_SPIMulti(void)
|
|
{
|
|
struct
|
|
{
|
|
uint8_t TxBytes;
|
|
uint8_t RxBytes;
|
|
uint8_t RxStartAddr;
|
|
uint8_t TxData[255];
|
|
} SPI_Multi_Params;
|
|
|
|
Endpoint_Read_Stream_LE(&SPI_Multi_Params, sizeof(SPI_Multi_Params) - sizeof(SPI_Multi_Params.TxData));
|
|
Endpoint_Read_Stream_LE(&SPI_Multi_Params.TxData, SPI_Multi_Params.TxBytes);
|
|
|
|
Endpoint_ClearOUT();
|
|
Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
|
|
|
|
Endpoint_Write_Byte(CMD_SPI_MULTI);
|
|
Endpoint_Write_Byte(STATUS_CMD_OK);
|
|
|
|
uint8_t CurrTxPos = 0;
|
|
uint8_t CurrRxPos = 0;
|
|
|
|
/* Write out bytes to transmit until the start of the bytes to receive is met */
|
|
while (CurrTxPos < SPI_Multi_Params.RxStartAddr)
|
|
{
|
|
if (CurrTxPos < SPI_Multi_Params.TxBytes)
|
|
SPI_SendByte(SPI_Multi_Params.TxData[CurrTxPos]);
|
|
else
|
|
SPI_SendByte(0);
|
|
|
|
CurrTxPos++;
|
|
}
|
|
|
|
/* Transmit remaining bytes with padding as needed, read in response bytes */
|
|
while (CurrRxPos < SPI_Multi_Params.RxBytes)
|
|
{
|
|
if (CurrTxPos < SPI_Multi_Params.TxBytes)
|
|
Endpoint_Write_Byte(SPI_TransferByte(SPI_Multi_Params.TxData[CurrTxPos++]));
|
|
else
|
|
Endpoint_Write_Byte(SPI_ReceiveByte());
|
|
|
|
CurrRxPos++;
|
|
}
|
|
|
|
Endpoint_Write_Byte(STATUS_CMD_OK);
|
|
Endpoint_ClearIN();
|
|
}
|