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Partial Commit: Move AVRISP project out of the Projects\Incomplete directory.

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Dean Camera 2009-08-25 13:21:19 +00:00
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608
Projects/AVRISP/Lib/V2Protocol.c Normal file
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/*
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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/*
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
*
* Header file for V2Protocol.c.
*/
#ifndef _V2_PROTOCOL_
#define _V2_PROTOCOL_
/* Includes: */
#include <LUFA/Drivers/USB/USB.h>
#include <LUFA/Drivers/Peripheral/SPI.h>
#include "../Descriptors.h"
#include "V2ProtocolConstants.h"
#include "V2ProtocolParams.h"
#include "V2ProtocolTarget.h"
/* Macros: */
/** Programmer ID string, returned to the host during the CMD_SIGN_ON command processing */
#define PROGRAMMER_ID "AVRISP_MK2"
/** Mask for the reading or writing of the high byte in a FLASH word when issuing a low-level programming command */
#define READ_WRITE_HIGH_BYTE_MASK (1 << 3)
#define PROG_MODE_PAGED_WRITES_MASK (1 << 0)
#define PROG_MODE_WORD_TIMEDELAY_MASK (1 << 1)
#define PROG_MODE_WORD_VALUE_MASK (1 << 2)
#define PROG_MODE_WORD_READYBUSY_MASK (1 << 3)
#define PROG_MODE_PAGED_TIMEDELAY_MASK (1 << 4)
#define PROG_MODE_PAGED_VALUE_MASK (1 << 5)
#define PROG_MODE_PAGED_READYBUSY_MASK (1 << 6)
#define PROG_MODE_COMMIT_PAGE_MASK (1 << 7)
/* Function Prototypes: */
void V2Protocol_ProcessCommand(void);
#if defined(INCLUDE_FROM_V2PROTOCOL_C)
static void V2Protocol_Command_Unknown(uint8_t V2Command);
static void V2Protocol_Command_SignOn(void);
static void V2Protocol_Command_GetSetParam(uint8_t V2Command);
static void V2Protocol_Command_LoadAddress(void);
static void V2Protocol_Command_ResetProtection(void);
static void V2Protocol_Command_EnterISPMode(void);
static void V2Protocol_Command_LeaveISPMode(void);
static void V2Protocol_Command_ProgramMemory(uint8_t V2Command);
static void V2Protocol_Command_ReadMemory(uint8_t V2Command);
static void V2Protocol_Command_ChipErase(void);
static void V2Protocol_Command_ReadFuseLockSigOSCCAL(uint8_t V2Command);
static void V2Protocol_Command_WriteFuseLock(uint8_t V2Command);
static void V2Protocol_Command_SPIMulti(void);
#endif
#endif

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/*
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
*
* Macros for the V2 Protocol Packet Commands and Responses.
*/
#ifndef _V2_PROTOCOL_CONSTANTS_
#define _V2_PROTOCOL_CONSTANTS_
/* Macros: */
#define CMD_SIGN_ON 0x01
#define CMD_SET_PARAMETER 0x02
#define CMD_GET_PARAMETER 0x03
#define CMD_OSCCAL 0x05
#define CMD_LOAD_ADDRESS 0x06
#define CMD_FIRMWARE_UPGRADE 0x07
#define CMD_RESET_PROTECTION 0x0A
#define CMD_ENTER_PROGMODE_ISP 0x10
#define CMD_LEAVE_PROGMODE_ISP 0x11
#define CMD_CHIP_ERASE_ISP 0x12
#define CMD_PROGRAM_FLASH_ISP 0x13
#define CMD_READ_FLASH_ISP 0x14
#define CMD_PROGRAM_EEPROM_ISP 0x15
#define CMD_READ_EEPROM_ISP 0x16
#define CMD_PROGRAM_FUSE_ISP 0x17
#define CMD_READ_FUSE_ISP 0x18
#define CMD_PROGRAM_LOCK_ISP 0x19
#define CMD_READ_LOCK_ISP 0x1A
#define CMD_READ_SIGNATURE_ISP 0x1B
#define CMD_READ_OSCCAL_ISP 0x1C
#define CMD_SPI_MULTI 0x1D
#define STATUS_CMD_OK 0x00
#define STATUS_CMD_TOUT 0x80
#define STATUS_RDY_BSY_TOUT 0x81
#define STATUS_SET_PARAM_MISSING 0x82
#define STATUS_CMD_FAILED 0xC0
#define STATUS_CMD_UNKNOWN 0xC9
#define STATUS_ISP_READY 0x00
#define STATUS_CONN_FAIL_MOSI 0x01
#define STATUS_CONN_FAIL_RST 0x02
#define STATUS_CONN_FAIL_SCK 0x04
#define STATUS_TGT_NOT_DETECTED 0x10
#define STATUS_TGT_REVERSE_INSERTED 0x20
#define PARAM_BUILD_NUMBER_LOW 0x80
#define PARAM_BUILD_NUMBER_HIGH 0x81
#define PARAM_HW_VER 0x90
#define PARAM_SW_MAJOR 0x91
#define PARAM_SW_MINOR 0x92
#define PARAM_VTARGET 0x94
#define PARAM_SCK_DURATION 0x98
#define PARAM_RESET_POLARITY 0x9E
#define PARAM_STATUS_TGT_CONN 0xA1
#define PARAM_DISCHARGEDELAY 0xA4
#endif

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/*
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 parameter handler, to process V2 Protocol device parameters.
*/
#define INCLUDE_FROM_V2PROTOCOL_PARAMS_C
#include "V2ProtocolParams.h"
/* Non-Volatile Parameter Values for EEPROM storage */
uint8_t EEMEM EEPROM_Rest_Polarity = 0x00;
/* Volatile Parameter Values for RAM storage */
static ParameterItem_t ParameterTable[] =
{
{ .ParamID = PARAM_BUILD_NUMBER_LOW,
.ParamValue = (LUFA_VERSION_INTEGER >> 8),
.ParamPrivellages = PARAM_PRIV_READ },
{ .ParamID = PARAM_BUILD_NUMBER_HIGH,
.ParamValue = (LUFA_VERSION_INTEGER & 0xFF),
.ParamPrivellages = PARAM_PRIV_READ },
{ .ParamID = PARAM_HW_VER,
.ParamValue = 0x00,
.ParamPrivellages = PARAM_PRIV_READ },
{ .ParamID = PARAM_SW_MAJOR,
.ParamValue = 0x01,
.ParamPrivellages = PARAM_PRIV_READ },
{ .ParamID = PARAM_SW_MINOR,
.ParamValue = 0x0C,
.ParamPrivellages = PARAM_PRIV_READ },
{ .ParamID = PARAM_VTARGET,
.ParamValue = 0x32,
.ParamPrivellages = PARAM_PRIV_READ },
{ .ParamID = PARAM_SCK_DURATION,
.ParamValue = (TOTAL_PROGRAMMING_SPEEDS - 1),
.ParamPrivellages = PARAM_PRIV_READ | PARAM_PRIV_WRITE },
{ .ParamID = PARAM_RESET_POLARITY,
.ParamValue = 0x00,
.ParamPrivellages = PARAM_PRIV_WRITE },
{ .ParamID = PARAM_STATUS_TGT_CONN,
.ParamValue = 0x00,
.ParamPrivellages = PARAM_PRIV_READ },
{ .ParamID = PARAM_DISCHARGEDELAY,
.ParamValue = 0x00,
.ParamPrivellages = PARAM_PRIV_WRITE },
};
/** Loads saved non-volatile parameter values from the EEPROM into the parameter table, as needed. */
void V2Params_LoadEEPROMParamValues(void)
{
/* Target RESET line polarity is a non-volatile value, retrieve current parameter value from EEPROM */
V2Params_GetParamFromTable(PARAM_RESET_POLARITY)->ParamValue = eeprom_read_byte(&EEPROM_Rest_Polarity);
}
/** Retrieves the host PC read/write privellages for a given parameter in the parameter table. This should
* be called before calls to \ref V2Params_GetParameterValue() or \ref V2Params_SetParameterValue() when
* getting or setting parameter values in response to requests from the host.
*
* \param ParamID Parameter ID whose privellages are to be retrieved from the table
*
* \return Privellages for the requested parameter, as a mask of PARAM_PRIV_* masks
*/
uint8_t V2Params_GetParameterPrivellages(uint8_t ParamID)
{
ParameterItem_t* ParamInfo = V2Params_GetParamFromTable(ParamID);
if (ParamInfo == NULL)
return 0;
return ParamInfo->ParamPrivellages;
}
/** Retrieves the current value for a given parameter in the parameter table.
*
* \param ParamID Parameter ID whose value is to be retrieved from the table
*
* \return Current value of the parameter in the table, or 0 if not found
*/
uint8_t V2Params_GetParameterValue(uint8_t ParamID)
{
ParameterItem_t* ParamInfo = V2Params_GetParamFromTable(ParamID);
if (ParamInfo == NULL)
return 0;
return ParamInfo->ParamValue;
}
/** Sets the value for a given parameter in the parameter table.
*
* \param ParamID Parameter ID whose value is to be set in the table
* \param Value New value to set the parameter to
*
* \return Pointer to the associated parameter information from the parameter table if found, NULL otherwise
*/
void V2Params_SetParameterValue(uint8_t ParamID, uint8_t Value)
{
ParameterItem_t* ParamInfo = V2Params_GetParamFromTable(ParamID);
if (ParamInfo == NULL)
return;
ParamInfo->ParamValue = Value;
/* The target RESET line polarity is a non-volatile parameter, save to EEPROM when changed */
if (ParamID == PARAM_RESET_POLARITY)
eeprom_write_byte(&EEPROM_Rest_Polarity, Value);
}
/** Retrieves a parameter entry (including ID, value and privellages) from the parameter table that matches the given
* parameter ID.
*
* \param ParamID Parameter ID to find in the table
*
* \return Pointer to the associated parameter information from the parameter table if found, NULL otherwise
*/
static ParameterItem_t* V2Params_GetParamFromTable(uint8_t ParamID)
{
/* Find the parameter in the parameter table if present */
for (uint8_t TableIndex = 0; TableIndex < (sizeof(ParameterTable) / sizeof(ParameterTable[0])); TableIndex++)
{
if (ParamID == ParameterTable[TableIndex].ParamID)
return &ParameterTable[TableIndex];
}
return NULL;
}

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/*
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
*
* Header file for V2ProtocolParams.c.
*/
#ifndef _V2_PROTOCOL_PARAMS_
#define _V2_PROTOCOL_PARAMS_
/* Includes: */
#include <avr/io.h>
#include <avr/eeprom.h>
#include <LUFA/Version.h>
#include "V2Protocol.h"
#include "V2ProtocolConstants.h"
/* Macros: */
/** Parameter privellage mask to allow the host PC to read the parameter's value */
#define PARAM_PRIV_READ (1 << 0)
/** Parameter privellage mask to allow the host PC to change the parameter's value */
#define PARAM_PRIV_WRITE (1 << 1)
/* Type Defines: */
/** Type define for a parameter table entry indicating a PC readable or writable device parameter. */
typedef struct
{
const uint8_t ParamID; /**< Parameter ID number to uniquely identify the parameter within the device */
uint8_t ParamValue; /**< Current parameter's value within the device */
uint8_t ParamPrivellages; /**< Parameter privellages to allow the host to read or write the parameter's value */
} ParameterItem_t;
/* Function Prototypes: */
void V2Params_LoadEEPROMParamValues(void);
uint8_t V2Params_GetParameterPrivellages(uint8_t ParamID);
uint8_t V2Params_GetParameterValue(uint8_t ParamID);
void V2Params_SetParameterValue(uint8_t ParamID, uint8_t Value);
#if defined(INCLUDE_FROM_V2PROTOCOL_PARAMS_C)
static ParameterItem_t* V2Params_GetParamFromTable(uint8_t ParamID);
#endif
#endif

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/*
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
*
* Target-related functions for the V2 Protocol decoder.
*/
#include "V2ProtocolTarget.h"
/** Current memory address for FLASH/EEPROM memory read/write commands */
uint32_t CurrentAddress;
/** Converts the given AVR Studio SCK duration parameter (set by a SET PARAM command from the host) to the nearest
* possible SPI clock prescaler mask for passing to the SPI_Init() routine.
*
* \return Nearest SPI prescaler mask for the given SCK frequency
*/
uint8_t V2Protocol_GetSPIPrescalerMask(void)
{
static const uint8_t SPIMaskFromSCKDuration[TOTAL_PROGRAMMING_SPEEDS] =
{
#if (F_CPU == 8000000)
SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 4MHz SPI
SPI_SPEED_FCPU_DIV_2, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI
SPI_SPEED_FCPU_DIV_4, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI
SPI_SPEED_FCPU_DIV_8, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI
SPI_SPEED_FCPU_DIV_16, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI
SPI_SPEED_FCPU_DIV_32, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI
SPI_SPEED_FCPU_DIV_64 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI
#if (F_CPU == 16000000)
SPI_SPEED_FCPU_DIV_2, // AVRStudio = 8MHz SPI, Actual = 8MHz SPI
SPI_SPEED_FCPU_DIV_4, // AVRStudio = 4MHz SPI, Actual = 4MHz SPI
SPI_SPEED_FCPU_DIV_8, // AVRStudio = 2MHz SPI, Actual = 2MHz SPI
SPI_SPEED_FCPU_DIV_16, // AVRStudio = 1MHz SPI, Actual = 1MHz SPI
SPI_SPEED_FCPU_DIV_32, // AVRStudio = 500KHz SPI, Actual = 500KHz SPI
SPI_SPEED_FCPU_DIV_64, // AVRStudio = 250KHz SPI, Actual = 250KHz SPI
SPI_SPEED_FCPU_DIV_128 // AVRStudio = 125KHz SPI, Actual = 125KHz SPI
#else
#error No SPI prescaler masks for chosen F_CPU speed.
#endif
};
uint8_t SCKDuration = V2Params_GetParameterValue(PARAM_SCK_DURATION);
if (SCKDuration >= sizeof(SPIMaskFromSCKDuration))
SCKDuration = (sizeof(SPIMaskFromSCKDuration) - 1);
return SPIMaskFromSCKDuration[SCKDuration];
}
/** Asserts or deasserts the target's reset line, using the correct polarity as set by the host using a SET PARAM command.
* When not asserted, the line is tristated so as not to intefere with normal device operation.
*
* \param ResetTarget Boolean true when the target should be held in reset, false otherwise
*/
void V2Protocol_ChangeTargetResetLine(bool ResetTarget)
{
if (ResetTarget)
{
RESET_LINE_DDR |= RESET_LINE_MASK;
if (!(V2Params_GetParameterValue(PARAM_RESET_POLARITY)))
RESET_LINE_PORT |= RESET_LINE_MASK;
}
else
{
RESET_LINE_PORT &= ~RESET_LINE_MASK;
RESET_LINE_DDR &= ~RESET_LINE_MASK;
}
}
/** Waits until the last issued target memory programming command has completed, via the check mode given and using
* the given parameters.
*
* \param ProgrammingMode Programming mode used and completion check to use, a mask of PROG_MODE_* constants
* \param PollAddress Memory address to poll for completion if polling check mode used
* \param PollValue Poll value to check against if polling check mode used
* \param DelayMS Milliseconds to delay before returning if delay check mode used
* \param ReadMemCommand Device low-level READ MEMORY command to send if value check mode used
*
* \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT or
* \ref STATUS_CMD_TOUT otherwise
*/
uint8_t V2Protocol_WaitForProgComplete(uint8_t ProgrammingMode, uint16_t PollAddress, uint8_t PollValue,
uint8_t DelayMS, uint8_t ReadMemCommand)
{
uint8_t ProgrammingStatus = STATUS_CMD_OK;
/* Determine method of Programming Complete check */
switch (ProgrammingMode & ~(PROG_MODE_PAGED_WRITES_MASK | PROG_MODE_COMMIT_PAGE_MASK))
{
case PROG_MODE_WORD_TIMEDELAY_MASK:
case PROG_MODE_PAGED_TIMEDELAY_MASK:
V2Protocol_DelayMS(DelayMS);
break;
case PROG_MODE_WORD_VALUE_MASK:
case PROG_MODE_PAGED_VALUE_MASK:
TCNT0 = 0;
do
{
SPI_SendByte(ReadMemCommand);
SPI_SendByte(PollAddress >> 8);
SPI_SendByte(PollAddress & 0xFF);
}
while ((SPI_TransferByte(0x00) != PollValue) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));
if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)
ProgrammingStatus = STATUS_CMD_TOUT;
break;
case PROG_MODE_WORD_READYBUSY_MASK:
case PROG_MODE_PAGED_READYBUSY_MASK:
ProgrammingStatus = V2Protocol_WaitWhileTargetBusy();
break;
}
return ProgrammingStatus;
}
/** Waits until the target has completed the last operation, by continuously polling the device's
* BUSY flag until it is cleared, or until the \ref TARGET_BUSY_TIMEOUT_MS timeout period has expired.
*
* \return V2 Protocol status \ref STATUS_CMD_OK if the no timeout occurred, \ref STATUS_RDY_BSY_TOUT otherwise
*/
uint8_t V2Protocol_WaitWhileTargetBusy(void)
{
TCNT0 = 0;
do
{
SPI_SendByte(0xF0);
SPI_SendByte(0x00);
SPI_SendByte(0x00);
}
while ((SPI_ReceiveByte() & 0x01) && (TCNT0 < TARGET_BUSY_TIMEOUT_MS));
if (TCNT0 >= TARGET_BUSY_TIMEOUT_MS)
return STATUS_RDY_BSY_TOUT;
else
return STATUS_CMD_OK;
}
/** Sends a low-level LOAD EXTENDED ADDRESS command to the target, for addressing of memory beyond the
* 64KB boundary. This sends the command with the correct address as indicated by the current address
* pointer variable set by the host when a SET ADDRESS command is issued.
*/
void V2Protocol_LoadExtendedAddress(void)
{
SPI_SendByte(0x4D);
SPI_SendByte(0x00);
SPI_SendByte((CurrentAddress & 0x00FF0000) >> 16);
SPI_SendByte(0x00);
}

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/*
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
*
* Header file for V2ProtocolTarget.c.
*/
#ifndef _V2_PROTOCOL_TARGET_
#define _V2_PROTOCOL_TARGET_
/* Includes: */
#include <avr/io.h>
#include <util/delay.h>
#include <LUFA/Drivers/USB/USB.h>
#include <LUFA/Drivers/Peripheral/SPI.h>
#include "../Descriptors.h"
#include "V2ProtocolConstants.h"
#include "V2ProtocolParams.h"
/* Macros: */
/** Total number of allowable ISP programming speeds supported by the device */
#define TOTAL_PROGRAMMING_SPEEDS 7
/** Timeout in milliseconds of target busy-wait loops waiting for a command to complete */
#define TARGET_BUSY_TIMEOUT_MS 150
/* External Variables: */
extern uint32_t CurrentAddress;
/* Inline Functions: */
/** Blocking delay for a given number of milliseconds, via a hardware timer.
*
* \param DelayMS Number of milliseconds to delay for
*/
static inline void V2Protocol_DelayMS(uint8_t DelayMS)
{
TCNT0 = 0;
while (TCNT0 < DelayMS);
}
/* Function Prototypes: */
uint8_t V2Protocol_GetSPIPrescalerMask(void);
void V2Protocol_ChangeTargetResetLine(bool ResetTarget);
void V2Protocol_DelayMS(uint8_t MS);
uint8_t V2Protocol_WaitForProgComplete(uint8_t ProgrammingMode, uint16_t PollAddress, uint8_t PollValue,
uint8_t DelayMS, uint8_t ReadMemCommand);
uint8_t V2Protocol_WaitWhileTargetBusy(void);
void V2Protocol_LoadExtendedAddress(void);
#endif