diff options
Diffstat (limited to 'Projects/Incomplete/AVRISP/Lib/V2Protocol.c')
| -rw-r--r-- | Projects/Incomplete/AVRISP/Lib/V2Protocol.c | 608 |
1 files changed, 0 insertions, 608 deletions
diff --git a/Projects/Incomplete/AVRISP/Lib/V2Protocol.c b/Projects/Incomplete/AVRISP/Lib/V2Protocol.c deleted file mode 100644 index 248c50d24..000000000 --- a/Projects/Incomplete/AVRISP/Lib/V2Protocol.c +++ /dev/null @@ -1,608 +0,0 @@ -/*
- LUFA Library
- Copyright (C) Dean Camera, 2009.
-
- dean [at] fourwalledcubicle [dot] com
- www.fourwalledcubicle.com
-*/
-
-/*
- Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
-
- Permission to use, copy, modify, and distribute this software
- and its documentation for any purpose and without fee is hereby
- granted, provided that the above copyright notice appear in all
- copies and that both that the copyright notice and this
- permission notice and warranty disclaimer appear in supporting
- documentation, and that the name of the author not be used in
- advertising or publicity pertaining to distribution of the
- software without specific, written prior permission.
-
- The author disclaim all warranties with regard to this
- software, including all implied warranties of merchantability
- and fitness. In no event shall the author be liable for any
- special, indirect or consequential damages or any damages
- whatsoever resulting from loss of use, data or profits, whether
- in an action of contract, negligence or other tortious action,
- arising out of or in connection with the use or performance of
- this software.
-*/
-
-/** \file
- *
- * V2Protocol handler, to process V2 Protocol commands used in Atmel programmer devices.
- */
-
-#define INCLUDE_FROM_V2PROTOCOL_C
-#include "V2Protocol.h"
-
-/** Master V2 Protocol packet handler, for receieved V2 Protocol packets from a connected host.
- * This routine decodes the issued command and passes off the handling of the command to the
- * appropriate function.
- */
-void V2Protocol_ProcessCommand(void) -{ - uint8_t V2Command = Endpoint_Read_Byte();
-
- switch (V2Command)
- {
- case CMD_SIGN_ON:
- V2Protocol_Command_SignOn();
- break;
- case CMD_SET_PARAMETER:
- case CMD_GET_PARAMETER:
- V2Protocol_Command_GetSetParam(V2Command);
- break;
- case CMD_LOAD_ADDRESS:
- V2Protocol_Command_LoadAddress();
- break;
- case CMD_RESET_PROTECTION:
- V2Protocol_Command_ResetProtection();
- break;
- case CMD_ENTER_PROGMODE_ISP:
- V2Protocol_Command_EnterISPMode();
- break;
- case CMD_LEAVE_PROGMODE_ISP:
- V2Protocol_Command_LeaveISPMode();
- break;
- case CMD_PROGRAM_FLASH_ISP:
- case CMD_PROGRAM_EEPROM_ISP:
- V2Protocol_Command_ProgramMemory(V2Command);
- break;
- case CMD_READ_FLASH_ISP:
- case CMD_READ_EEPROM_ISP:
- V2Protocol_Command_ReadMemory(V2Command);
- break;
- case CMD_CHIP_ERASE_ISP:
- V2Protocol_Command_ChipErase();
- break;
- case CMD_READ_FUSE_ISP:
- case CMD_READ_LOCK_ISP:
- case CMD_READ_SIGNATURE_ISP:
- case CMD_READ_OSCCAL_ISP:
- V2Protocol_Command_ReadFuseLockSigOSCCAL(V2Command);
- break;
- case CMD_PROGRAM_FUSE_ISP:
- case CMD_PROGRAM_LOCK_ISP:
- V2Protocol_Command_WriteFuseLock(V2Command);
- break;
- case CMD_SPI_MULTI:
- V2Protocol_Command_SPIMulti();
- break;
- default:
- V2Protocol_Command_Unknown(V2Command);
- break;
- }
-
- Endpoint_WaitUntilReady();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_OUT); -} -
-/** Handler for unknown V2 protocol commands. This discards all sent data and returns a
- * STATUS_CMD_UNKNOWN status back to the host.
- *
- * \param V2Command Issued V2 Protocol command byte from the host
- */
-static void V2Protocol_Command_Unknown(uint8_t V2Command)
-{
- /* Discard all incomming data */
- while (Endpoint_BytesInEndpoint() == AVRISP_DATA_EPSIZE)
- {
- Endpoint_ClearOUT();
- Endpoint_WaitUntilReady();
- }
-
- Endpoint_ClearOUT();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-
- Endpoint_Write_Byte(V2Command);
- Endpoint_Write_Byte(STATUS_CMD_UNKNOWN);
- Endpoint_ClearIN();
-}
-
-/** Handler for the CMD_SIGN_ON command, returning the programmer ID string to the host. */ -static void V2Protocol_Command_SignOn(void)
-{
- Endpoint_ClearOUT();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-
- Endpoint_Write_Byte(CMD_SIGN_ON);
- Endpoint_Write_Byte(STATUS_CMD_OK);
- Endpoint_Write_Byte(sizeof(PROGRAMMER_ID) - 1);
- Endpoint_Write_Stream_LE(PROGRAMMER_ID, (sizeof(PROGRAMMER_ID) - 1));
- Endpoint_ClearIN();
-}
-
-/** Handler for the CMD_SET_PARAMETER and CMD_GET_PARAMETER commands from the host, setting or
- * getting a device parameter's value from the parameter table.
- *
- * \param V2Command Issued V2 Protocol command byte from the host
- */
-static void V2Protocol_Command_GetSetParam(uint8_t V2Command)
-{
- uint8_t ParamID = Endpoint_Read_Byte();
- uint8_t ParamValue;
-
- if (V2Command == CMD_SET_PARAMETER)
- ParamValue = Endpoint_Read_Byte();
-
- Endpoint_ClearOUT();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-
- Endpoint_Write_Byte(V2Command);
-
- uint8_t ParamPrivs = V2Params_GetParameterPrivellages(ParamID);
-
- if ((V2Command == CMD_SET_PARAMETER) && (ParamPrivs & PARAM_PRIV_WRITE))
- {
- Endpoint_Write_Byte(STATUS_CMD_OK);
- V2Params_SetParameterValue(ParamID, ParamValue);
- }
- else if ((V2Command == CMD_GET_PARAMETER) && (ParamPrivs & PARAM_PRIV_READ))
- {
- Endpoint_Write_Byte(STATUS_CMD_OK);
- Endpoint_Write_Byte(V2Params_GetParameterValue(ParamID));
- }
- else
- {
- Endpoint_Write_Byte(STATUS_CMD_FAILED);
- }
-
- Endpoint_ClearIN();
-}
-
-/** Handler for the CMD_LOAD_ADDRESS command, loading the given device address into a
- * global storage variable for later use, and issuing LOAD EXTENDED ADDRESS commands
- * to the attached device as required.
- */
-static void V2Protocol_Command_LoadAddress(void)
-{
- Endpoint_Read_Stream_BE(&CurrentAddress, sizeof(CurrentAddress));
-
- Endpoint_ClearOUT();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-
- if (CurrentAddress & (1UL << 31))
- V2Protocol_LoadExtendedAddress();
-
- Endpoint_Write_Byte(CMD_LOAD_ADDRESS);
- Endpoint_Write_Byte(STATUS_CMD_OK);
- Endpoint_ClearIN();
-}
-
-/** Handler for the CMD_RESET_PROTECTION command, currently implemented as a dummy ACK function
- * as no ISP short-circuit protection is currently implemented.
- */
-static void V2Protocol_Command_ResetProtection(void)
-{
- Endpoint_ClearOUT();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-
- Endpoint_Write_Byte(CMD_RESET_PROTECTION);
- Endpoint_Write_Byte(STATUS_CMD_OK);
- Endpoint_ClearIN();
-}
-
-/** Handler for the CMD_ENTER_PROGMODE_ISP command, which attempts to enter programming mode on
- * the attached device, returning success or failure back to the host.
- */
-static void V2Protocol_Command_EnterISPMode(void)
-{
- struct
- {
- uint8_t TimeoutMS;
- uint8_t PinStabDelayMS;
- uint8_t ExecutionDelayMS;
- uint8_t SynchLoops;
- uint8_t ByteDelay;
- uint8_t PollValue;
- uint8_t PollIndex;
- uint8_t EnterProgBytes[4];
- } Enter_ISP_Params;
-
- Endpoint_Read_Stream_LE(&Enter_ISP_Params, sizeof(Enter_ISP_Params));
-
- Endpoint_ClearOUT();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-
- uint8_t ResponseStatus = STATUS_CMD_FAILED;
-
- CurrentAddress = 0;
-
- V2Protocol_DelayMS(Enter_ISP_Params.ExecutionDelayMS);
- SPI_Init(V2Protocol_GetSPIPrescalerMask() | SPI_SCK_LEAD_RISING | SPI_SAMPLE_LEADING | SPI_MODE_MASTER);
-
- while (Enter_ISP_Params.SynchLoops-- && (ResponseStatus == STATUS_CMD_FAILED))
- {
- uint8_t ResponseBytes[4];
-
- V2Protocol_ChangeTargetResetLine(true);
- V2Protocol_DelayMS(Enter_ISP_Params.PinStabDelayMS);
-
- for (uint8_t RByte = 0; RByte < sizeof(ResponseBytes); RByte++)
- {
- V2Protocol_DelayMS(Enter_ISP_Params.ByteDelay);
- ResponseBytes[RByte] = SPI_TransferByte(Enter_ISP_Params.EnterProgBytes[RByte]);
- }
-
- /* Check if polling disabled, or if the polled value matches the expected value */
- if (!(Enter_ISP_Params.PollIndex) || (ResponseBytes[Enter_ISP_Params.PollIndex - 1] == Enter_ISP_Params.PollValue))
- {
- ResponseStatus = STATUS_CMD_OK;
- }
- else
- {
- V2Protocol_ChangeTargetResetLine(false);
- V2Protocol_DelayMS(Enter_ISP_Params.PinStabDelayMS);
- }
- }
-
- Endpoint_Write_Byte(CMD_ENTER_PROGMODE_ISP);
- Endpoint_Write_Byte(ResponseStatus);
- Endpoint_ClearIN();
-}
-
-/** Handler for the CMD_LEAVE_ISP command, which releases the target from programming mode. */
-static void V2Protocol_Command_LeaveISPMode(void)
-{
- struct
- {
- uint8_t PreDelayMS;
- uint8_t PostDelayMS;
- } Leave_ISP_Params;
-
- Endpoint_Read_Stream_LE(&Leave_ISP_Params, sizeof(Leave_ISP_Params));
-
- Endpoint_ClearOUT();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-
- V2Protocol_DelayMS(Leave_ISP_Params.PreDelayMS);
- V2Protocol_ChangeTargetResetLine(false);
- SPI_ShutDown();
- V2Protocol_DelayMS(Leave_ISP_Params.PostDelayMS);
-
- Endpoint_Write_Byte(CMD_LEAVE_PROGMODE_ISP);
- Endpoint_Write_Byte(STATUS_CMD_OK);
- Endpoint_ClearIN();
-}
-
-/** Handler for the CMD_PROGRAM_FLASH_ISP and CMD_PROGRAM_EEPROM_ISP commands, writing out bytes,
- * words or pages of data to the attached device.
- *
- * \param V2Command Issued V2 Protocol command byte from the host
- */
-static void V2Protocol_Command_ProgramMemory(uint8_t V2Command)
-{
- struct
- {
- uint16_t BytesToWrite;
- uint8_t ProgrammingMode;
- uint8_t DelayMS;
- uint8_t ProgrammingCommands[3];
- uint8_t PollValue1;
- uint8_t PollValue2;
- uint8_t ProgData[512];
- } Write_Memory_Params;
-
- uint8_t* NextWriteByte = Write_Memory_Params.ProgData;
-
- Endpoint_Read_Stream_LE(&Write_Memory_Params, sizeof(Write_Memory_Params) - sizeof(Write_Memory_Params.ProgData));
- Write_Memory_Params.BytesToWrite = SwapEndian_16(Write_Memory_Params.BytesToWrite);
- Endpoint_Read_Stream_LE(&Write_Memory_Params.ProgData, Write_Memory_Params.BytesToWrite);
-
- Endpoint_ClearOUT();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-
- uint8_t ProgrammingStatus = STATUS_CMD_OK;
- uint16_t PollAddress = 0;
- uint8_t PollValue = (V2Command == CMD_PROGRAM_FLASH_ISP) ? Write_Memory_Params.PollValue1 :
- Write_Memory_Params.PollValue2;
- if (Write_Memory_Params.ProgrammingMode & PROG_MODE_PAGED_WRITES_MASK)
- {
- uint16_t StartAddress = (CurrentAddress & 0xFFFF);
-
- /* Paged mode memory programming */
- for (uint16_t CurrentByte = 0; CurrentByte < Write_Memory_Params.BytesToWrite; CurrentByte++)
- {
- bool IsOddByte = (CurrentByte & 0x01);
- uint8_t ByteToWrite = *(NextWriteByte++);
-
- if (IsOddByte && (V2Command == CMD_PROGRAM_FLASH_ISP))
- Write_Memory_Params.ProgrammingCommands[0] |= READ_WRITE_HIGH_BYTE_MASK;
- else
- Write_Memory_Params.ProgrammingCommands[0] &= ~READ_WRITE_HIGH_BYTE_MASK;
-
- SPI_SendByte(Write_Memory_Params.ProgrammingCommands[0]);
- SPI_SendByte(CurrentAddress >> 8);
- SPI_SendByte(CurrentAddress & 0xFF);
- SPI_SendByte(ByteToWrite);
-
- if (!(PollAddress) && (ByteToWrite != PollValue))
- {
- if (IsOddByte && (V2Command == CMD_PROGRAM_FLASH_ISP))
- Write_Memory_Params.ProgrammingCommands[2] |= READ_WRITE_HIGH_BYTE_MASK;
-
- PollAddress = (CurrentAddress & 0xFFFF);
- }
-
- if (IsOddByte || (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(StartAddress >> 8);
- SPI_SendByte(StartAddress & 0xFF);
- SPI_SendByte(0x00);
-
- /* Check if polling is possible, if not switch to timed delay mode */
- if (!(PollAddress))
- {
- Write_Memory_Params.ProgrammingMode &= ~PROG_MODE_PAGED_VALUE_MASK;
- Write_Memory_Params.ProgrammingMode |= PROG_MODE_PAGED_TIMEDELAY_MASK;
- }
-
- ProgrammingStatus = V2Protocol_WaitForProgComplete(Write_Memory_Params.ProgrammingMode, PollAddress, PollValue,
- Write_Memory_Params.DelayMS, Write_Memory_Params.ProgrammingCommands[2]);
- }
- }
- else
- {
- /* Word/byte mode memory programming */
- for (uint16_t CurrentByte = 0; CurrentByte < Write_Memory_Params.BytesToWrite; CurrentByte++)
- {
- bool IsOddByte = (CurrentByte & 0x01);
- uint8_t ByteToWrite = *(NextWriteByte++);
-
- if (IsOddByte && (V2Command == CMD_READ_FLASH_ISP))
- Write_Memory_Params.ProgrammingCommands[0] |= READ_WRITE_HIGH_BYTE_MASK;
- else
- Write_Memory_Params.ProgrammingCommands[0] &= ~READ_WRITE_HIGH_BYTE_MASK;
-
- SPI_SendByte(Write_Memory_Params.ProgrammingCommands[0]);
- SPI_SendByte(CurrentAddress >> 8);
- SPI_SendByte(CurrentAddress & 0xFF);
- SPI_SendByte(ByteToWrite);
-
- if (ByteToWrite != PollValue)
- {
- if (IsOddByte && (V2Command == CMD_PROGRAM_FLASH_ISP))
- Write_Memory_Params.ProgrammingCommands[2] |= READ_WRITE_HIGH_BYTE_MASK;
-
- PollAddress = (CurrentAddress & 0xFFFF);
- }
-
- if (IsOddByte || (V2Command == CMD_PROGRAM_EEPROM_ISP))
- CurrentAddress++;
-
- ProgrammingStatus = V2Protocol_WaitForProgComplete(Write_Memory_Params.ProgrammingMode, PollAddress, PollValue,
- Write_Memory_Params.DelayMS, Write_Memory_Params.ProgrammingCommands[2]);
-
- if (ProgrammingStatus != STATUS_CMD_OK)
- break;
- }
- }
-
- Endpoint_Write_Byte(V2Command);
- Endpoint_Write_Byte(ProgrammingStatus);
-
- Endpoint_ClearIN();
-}
-
-/** Handler for the CMD_READ_FLASH_ISP and CMD_READ_EEPROM_ISP commands, reading in bytes,
- * words or pages of data from the attached device.
- *
- * \param V2Command Issued V2 Protocol command byte from the host
- */
-static void V2Protocol_Command_ReadMemory(uint8_t V2Command)
-{
- struct
- {
- uint16_t BytesToRead;
- uint8_t ReadMemoryCommand;
- } Read_Memory_Params;
-
- Endpoint_Read_Stream_LE(&Read_Memory_Params, sizeof(Read_Memory_Params));
- Read_Memory_Params.BytesToRead = SwapEndian_16(Read_Memory_Params.BytesToRead);
-
- Endpoint_ClearOUT();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-
- Endpoint_Write_Byte(V2Command);
- Endpoint_Write_Byte(STATUS_CMD_OK);
-
- for (uint16_t CurrentByte = 0; CurrentByte < Read_Memory_Params.BytesToRead; CurrentByte++)
- {
- bool IsOddByte = (CurrentByte & 0x01);
-
- if (IsOddByte && (V2Command == CMD_READ_FLASH_ISP))
- Read_Memory_Params.ReadMemoryCommand |= READ_WRITE_HIGH_BYTE_MASK;
- else
- Read_Memory_Params.ReadMemoryCommand &= ~READ_WRITE_HIGH_BYTE_MASK;
-
- SPI_SendByte(Read_Memory_Params.ReadMemoryCommand);
- SPI_SendByte(CurrentAddress >> 8);
- SPI_SendByte(CurrentAddress & 0xFF);
- Endpoint_Write_Byte(SPI_ReceiveByte());
-
- /* Check if the endpoint bank is currently full */
- if (!(Endpoint_IsReadWriteAllowed()))
- {
- Endpoint_ClearIN();
- Endpoint_WaitUntilReady();
- }
-
- if ((IsOddByte && (V2Command == CMD_READ_FLASH_ISP)) || (V2Command == CMD_READ_EEPROM_ISP))
- CurrentAddress++;
- }
-
- Endpoint_Write_Byte(STATUS_CMD_OK);
-
- bool IsEndpointFull = !(Endpoint_IsReadWriteAllowed());
- Endpoint_ClearIN();
-
- /* Ensure last packet is a short packet to terminate the transfer */
- if (IsEndpointFull)
- {
- Endpoint_WaitUntilReady();
- Endpoint_ClearIN();
- Endpoint_WaitUntilReady();
- }
-}
-
-/** Handler for the CMD_CHI_ERASE_ISP command, clearing the target's FLASH memory. */
-static void V2Protocol_Command_ChipErase(void)
-{
- struct
- {
- uint8_t EraseDelayMS;
- uint8_t PollMethod;
- uint8_t EraseCommandBytes[4];
- } Erase_Chip_Params;
-
- Endpoint_Read_Stream_LE(&Erase_Chip_Params, sizeof(Erase_Chip_Params));
-
- Endpoint_ClearOUT();
- Endpoint_SetEndpointDirection(ENDPOINT_DIR_IN);
-
- 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 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 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();
-}
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