bool HanResponse::checkChecksum() {
uint16_t *checksum = (uint16_t *) &frame[CHECKSUM];
if (*checksum == calculateChecksum()) {
return true;
}
return false;
}
SerialCommand flashDownloadStart(unsigned int totalSize,
unsigned int numberOfBlocks,
unsigned int blockSize,
unsigned int offset)
{
QByteArray data;
data.append(ByteArrayHelpers::uint32ToByteArrayLittle(totalSize));
data.append(ByteArrayHelpers::uint32ToByteArrayLittle(numberOfBlocks));
data.append(ByteArrayHelpers::uint32ToByteArrayLittle(blockSize));
data.append(ByteArrayHelpers::uint32ToByteArrayLittle(offset));
QByteArray command = buildCommand(Opcode_FlashDownloadStart, data, calculateChecksum(data));
QByteArray expectedResponse;
expectedResponse.append(0x01);
expectedResponse.append(Opcode_FlashDownloadStart);
expectedResponse.append(ByteArrayHelpers::uint16ToByteArrayLittle(2));
expectedResponse.append((char)0x07);
expectedResponse.append((char)0x07);
expectedResponse.append((char)0x12);
expectedResponse.append((char)0x20);
expectedResponse.append((char)0x00);
expectedResponse.append((char)0x00);
return SerialCommand("flashDownloadStart",
slipEncode(command),
slipEncode(expectedResponse));
}
/**
* @brief Checks CRC of frame
*
* @param buffer Buffer containing message to check
* @param msgLength Length of message in bytes
*
* @return success/failure
*/
sInt32_t rsi_validateFrame( uInt8_t *buffer, uInt16_t msgLength )
{
uInt8_t crcVal[CRC_SIZE]; // CRC value
sInt32_t retVal = STATUS_FAILURE; // Variable for Return value
//assume frame has CRC...
calculateCrc( buffer, msgLength-2, crcVal);
//uInt32_t crc = (crcVal[1] << 8) | crcVal[0];
//printf("expected crc = 0x%04x\n", crc);
if ((crcVal[CRC_LSB_INDEX] == buffer[msgLength - 2]) &&
(crcVal[CRC_MSB_INDEX] == buffer[msgLength - 1])) {
//printf("validate CRC: OK!\n");
retVal = STATUS_SUCCESS;
}
else { //frame must have 1-byte checksum...
uInt8_t checkSum = calculateChecksum( buffer, msgLength-1 );
if (checkSum == buffer[msgLength - 1]) {
//printf("validate checksum: OK!\n");
retVal = STATUS_SUCCESS;
}
else
printf("invalid RSI frame check sequence!\n");
}
//FIXME: validate RSD/ACP frame address here?
return retVal;
}
int sendACK(int seq_num, int sockfd,struct sockaddr *dest_addr,socklen_t addrlen){
char *ACK[sizeof(uint32_t)+sizeof(uint16_t)+3];
void *offset = ACK;
uint32_t seqOut = htonl((uint32_t)seq_num);
memcpy(offset,&seqOut,sizeof(uint32_t));
char *msg = "ACK";
uint16_t checkSum = calculateChecksum(&seqOut,sizeof(uint32_t));
checkSum += calculateChecksum(msg,3);
checkSum = 0xffff - checkSum;
offset+=sizeof(uint32_t);
memcpy(offset,&checkSum,sizeof(uint16_t));
offset+=sizeof(uint16_t);
memcpy(offset,msg,3);
int n = sendto(sockfd,ACK,sizeof(ACK),0,dest_addr,addrlen);
return n;
}
SerialCommand flashDownloadData(unsigned int sequence, QByteArray flashData)
{
QByteArray data;
data.append(ByteArrayHelpers::uint32ToByteArrayLittle(flashData.length()));
data.append(ByteArrayHelpers::uint32ToByteArrayLittle(sequence));
data.append(ByteArrayHelpers::uint32ToByteArrayLittle(0)); // Mystery value
data.append(ByteArrayHelpers::uint32ToByteArrayLittle(0)); // Mystery value
data.append(flashData);
QByteArray command = buildCommand(Opcode_FlashDownloadData, data, calculateChecksum(flashData));
QByteArray expectedResponse;
expectedResponse.append(0x01);
expectedResponse.append(Opcode_FlashDownloadData);
expectedResponse.append(ByteArrayHelpers::uint16ToByteArrayLittle(2));
expectedResponse.append((char)0x07);
expectedResponse.append((char)0x07);
expectedResponse.append((char)0x12);
expectedResponse.append((char)0x20);
expectedResponse.append((char)0x00);
expectedResponse.append((char)0x00);
return SerialCommand("flashDownloadData",
slipEncode(command),
slipEncode(expectedResponse));
}
//---------------------------------------------------------------------
StreamSerialiser::Chunk* StreamSerialiser::readChunkImpl()
{
Chunk *chunk = OGRE_NEW Chunk();
chunk->offset = static_cast<uint32>(mStream->tell());
read(&chunk->id);
read(&chunk->version);
read(&chunk->length);
uint32 checksum;
read(&checksum);
if (checksum != calculateChecksum(chunk))
{
// no good, this is an invalid chunk
uint32 off = chunk->offset;
OGRE_DELETE chunk;
OGRE_EXCEPT(Exception::ERR_INVALID_STATE,
"Corrupt chunk detected in stream " + mStream->getName() + " at byte "
+ StringConverter::toString(off),
"StreamSerialiser::readChunkImpl");
}
else
{
return chunk;
}
}
// ping message
void createPingMessage(Message* m, int length)
{
printf("%sMessage: PingRequest\n", KGRN);
configMessage(m, PingConfigurationObject, length);
uint16_t rv = calculateChecksum(m);
printf("Calculated checksum: %04x\n", rv);
}
// custom message with TX_GAIN=31 dB
void createCustomRequestMessage31dB(Message* m, int length)
{
printf("%sMessage: MIB_WriteRequest - TX_GAIN=31 dB\n", KGRN);
configMessage(m, CustomConfigurationObject31dB, length);
uint16_t rv = calculateChecksum(m);
printf("Calculated checksum: %04x\n", rv);
}
bool Frames::checkResFrame() {
uint16_t *location = (uint16_t *) &response[CHECKSUM];
if(*location != calculateChecksum(response)){
return false;
} else {
return true;
}
}
bool isChecksumOkIa6b(const uint8_t *ibusPacket, const uint8_t length)
{
uint16_t calculatedChecksum = calculateChecksum(ibusPacket, length);
// Note that there's a byte order swap to little endian here
return (calculatedChecksum >> 8) == ibusPacket[length - 1]
&& (calculatedChecksum & 0xFF) == ibusPacket[length - 2];
}
void closeMessage(char *message) {
size_t messageLength = strlen(message);
int checksum = calculateChecksum(&(message[1]), messageLength - 1);
message[messageLength++] = '*';
sprintf(&(message[messageLength]), "%02X", checksum);
messageLength += 2;
sprintf(&(message[messageLength]), "\r\n");
}
// physical message
void createPhysicalRequestMessage(Message* m, int length)
{
printf("%sMessage: MIB_WriteRequest\n", KGRN);
configMessage(m, PhysicalConfigurationObject, length);
uint16_t rv = calculateChecksum(m);
printf("Calculated checksum: %04x\n", rv);
}
bool writeEEPROM(void)
{
// Generate compile time error if the config does not fit in the reserved area of flash.
BUILD_BUG_ON(sizeof(master_t) > FLASH_TO_RESERVE_FOR_CONFIG);
FLASH_Status status = 0;
uint32_t wordOffset;
int8_t attemptsRemaining = 3;
bool changed;
// prepare checksum/version constants
masterConfig.version = EEPROM_CONF_VERSION;
masterConfig.size = sizeof(master_t);
masterConfig.magic_be = 0xBE;
masterConfig.magic_ef = 0xEF;
masterConfig.chk = 0; // erase checksum before recalculating
masterConfig.chk = calculateChecksum((const uint8_t *) &masterConfig, sizeof(master_t));
changed = (memcmp((const master_t *)CONFIG_START_FLASH_ADDRESS, &masterConfig, sizeof(master_t)) != 0);
// write it
if(changed) {
FLASH_Unlock();
while (attemptsRemaining--) {
#ifdef STM32F303
FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPERR);
#endif
#ifdef STM32F10X
FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
#endif
for (wordOffset = 0; wordOffset < sizeof(master_t); wordOffset += 4) {
if (wordOffset % FLASH_PAGE_SIZE == 0) {
status = FLASH_ErasePage(CONFIG_START_FLASH_ADDRESS + wordOffset);
if (status != FLASH_COMPLETE) {
break;
}
}
status = FLASH_ProgramWord(CONFIG_START_FLASH_ADDRESS + wordOffset,
*(uint32_t *) ((char *) &masterConfig + wordOffset));
if (status != FLASH_COMPLETE) {
break;
}
}
if (status == FLASH_COMPLETE) {
break;
}
}
FLASH_Lock();
// Flash write failed - just die now
if (status != FLASH_COMPLETE || !isEEPROMContentValid()) {
failureMode(10);
}
}
return changed;
}
void Frames::createRequest(const uint16_t *lockID, const uint32_t *userID, const uint16_t *pincode, const uint8_t *flags, const uint8_t *data) {
emptyFrame(request, sizeof(request));
setReqLockID(lockID);
setReqUserID(userID);
setReqPin(pincode);
setReqFlags(flags);
setReqData(data);
uint16_t *location = (uint16_t *) &request[CHECKSUM];
*location = calculateChecksum(request);
}
void createPingRequestMessage(Message* m, int length)
{
printf("Message: PingRequest\n");
m->stx = 0x02;
m->length = (uint8_t)PingRequest_Length;
m->command = PingRequest;
memcpy(m->data, dataPingRequest, sizeof(dataPingRequest));
calculateChecksum(m->length, m->command, m->data);
}
FILE* safeLoadFile(char* filename)
{
char checksum = calculateChecksum(filename);
FILE* fp = NULL;
if ( checksum != 0 || fopen_s(&fp, filename, "rbc") != 0 )
{
// uh-oh! file problem. is there a backup?
char bakFilename[256] = "backup/";
strcat_s(bakFilename, 256, filename);
checksum = calculateChecksum(bakFilename);
if ( checksum != 0 || fopen_s(&fp, bakFilename, "rbc") != 0 )
{
return NULL; // oh darn
}
}
return fp;
}
int isCorrupt(PacketData* packet)
{
unsigned short checksum = calculateChecksum(packet);
if (checksum != packet->checksum)
return 1;
return 0;
}
// request message with TX_GAIN=31 dB
void createMibWriteRequestMessage31dB(Message* m, int length)
{
printf("Message: MIB_WriteRequest - TX_GAIN=31 dB, Data=0x77\n");
m->stx = 0x02;
m->length = MIB_WriteRequest_Length;
m->command = MIB_WriteRequest;
memcpy(m->data, dataMibWriteRequest31dB, sizeof(dataMibWriteRequest31dB));
calculateChecksum(m->length, m->command, m->data);
}
// custom configuration, i.e TX_GAIN is a part of the message
void createDlDataRequestMessage31dB(Message* m, int length)
{
printf("Message: DL_DataRequest with Custom configuration of TX_GAIN=31 dB, Data=0x77\n");
m->stx = 0x02;
m->length = DL_DataRequest_LengthCustom;
m->command = DL_DataRequest;
memcpy(m->data, dataDlDataRequest_TxGain31, sizeof(dataDlDataRequest_TxGain31));
calculateChecksum(m->length, m->command, m->data);
}
// PHY configuration
void createDlDataRequestMessagePhy(Message* m, int length)
{
printf("Message: DL_DataRequest with PHY configuration of TX_GAIN\n");
m->stx = 0x02;
m->length = DL_DataRequest_LengthPhy;
m->command = DL_DataRequest;
memcpy(m->data, dataDlDataRequest_PHY, sizeof(dataDlDataRequest_PHY));
calculateChecksum(m->length, m->command, m->data);
}
static uint8_t transmitIbusPacket(uint8_t *ibusPacket, size_t payloadLength)
{
uint16_t checksum = calculateChecksum(ibusPacket, payloadLength + IBUS_CHECKSUM_SIZE);
for (size_t i = 0; i < payloadLength; i++) {
serialWrite(ibusSerialPort, ibusPacket[i]);
}
serialWrite(ibusSerialPort, checksum & 0xFF);
serialWrite(ibusSerialPort, checksum >> 8);
return payloadLength + IBUS_CHECKSUM_SIZE;
}
uint8_t updateNewConfig()
{
memset(&board_temp,0,sizeof(board_temp));
getInvariate(&board_temp,sizeof(board_temp)); //得到之前flash中的数据
if(calculateChecksum(&board_temp,sizeof(board_temp),18)
!= calculateChecksum(&board,sizeof(board),18)){ //判断两个board的检验和是否相同
//updateInvariate(&board,sizeof(board));
if(updateInvariate(&board,sizeof(board))){//向Flash中写入数据
//printf("update flash sucessful\n\r");
return 1;
} else{
//printf("update flash failed\n\r");
return 0;
}
}else{
//printf("not need update flash\n\r");
return 2;
}
//return Update_InVariate(&board,sizeof(BOARD));
}
void ClientAJAKumoTCP::parseIncoming(uint8_t *buffer, uint8_t len) {
if(buffer[0] == 0x01 && buffer[len-1] == 0x04) {
uint16_t checksum = calculateChecksum(buffer, len-3);
if(checksum == (buffer[len-3]<<8) | buffer[len-2]) {
if(buffer[3] == 'E' && buffer[4] == 'R') {
if(buffer[6] == '0' && buffer[7] == '0') {
if(_serialOutput > 1) {
Serial << "OK\n";
}
} else {
if(_serialOutput > 1) {
Serial << "Received error response from AJA KUMO\n";
}
}
} else {
char cmd[3];
char parameter[11];
char data[21];
memset(cmd, 0, 3);
memset(parameter, 0, 11);
memset(data, 0, 21);
cmd[0] = buffer[4];
cmd[1] = buffer[3];
uint8_t i = 5;
uint8_t pos = 0;
while(i++ < len-3) {
if(buffer[i] == 0x09 || pos++ == 10) {
strncpy(parameter, (char*)(buffer+i-pos), pos);
break;
}
}
strncpy(data, (char*)(buffer+i), len-i-4 > 20 ? 20 : len-i-4);
handleCmd(cmd, parameter, data);
}
} else {
if(_serialOutput > 1) {
Serial << "Checksum mismatch!\n";
}
}
} else {
if(_serialOutput > 1)
Serial << "ERROR: Malformed packet\n";
}
}
void getMoistureReading(char plant) {
if (plant < 0 || plant >= NUM_PLANTS) {
handleError('S', 1);
return;
}
char outStr[3] = {'M', plant, '0'};
outStr[2] = calculateChecksum(outStr, 2);
write(serial[activePort], outStr, 3);
printf("Requesting moisture reading... ");
awaitingMoistureResponse = TRUE;
forPlant = plant;
timeSentCommand = time(NULL);
}
void setDryLevel(char plant) {
if (plant != forPlant || plant < 0 || plant >= NUM_PLANTS) {
handleError('S', 2);
return;
}
char outStr[5] = {'D', plant, g_moisture & 0xFF, g_moisture >> 8, '0'};
outStr[4] = calculateChecksum(outStr, 4);
write(serial[activePort], outStr, 5);
printf("Sending dry level... ");
awaitingDryLevelAck = TRUE;
forPlant = plant;
timeSentCommand = time(NULL);
}
void sendConfiguration(char* buf) {
int i;
char outStr[CONFIG_BLOCK_SIZE+2];
for (i = 0; i < CONFIG_BLOCK_SIZE+1; i++) {
outStr[i] = buf[i];
}
outStr[CONFIG_BLOCK_SIZE+1] = calculateChecksum(outStr, CONFIG_BLOCK_SIZE+1);
//assert(validateChecksum(outStr, CONFIG_BLOCK_SIZE+2));
write(serial[activePort], outStr, CONFIG_BLOCK_SIZE+2);
printf("Sending configuration... ");
awaitingConfigurationAck = TRUE;
timeSentCommand = time(NULL);
}
int LedDeviceP9813::write(const std::vector<ColorRgb> &ledValues)
{
if (_ledCount != ledValues.size())
{
_ledBuf.resize(ledValues.size() * 4 + 8, 0x00);
_ledCount = ledValues.size();
}
uint8_t * dataPtr = _ledBuf.data();
for (const ColorRgb & color : ledValues)
{
*dataPtr++ = calculateChecksum(color);
*dataPtr++ = color.blue;
*dataPtr++ = color.green;
*dataPtr++ = color.red;
}
return writeBytes(_ledBuf.size(), _ledBuf.data());
}
void safeCloseFile(FILE* fp, char* filename)
{
fflush(fp);
fclose(fp);
// calculate the checksum and append it to the original file
FILE* oldfile = NULL;
char checksum = calculateChecksum(filename);
if ( fopen_s(&oldfile, filename, "a+b") != 0 ) // if an error happens while appending the checksum then the resulting file will be interpreted as corrupt later, bummer
{
TRACE("ERROR APPENDING CHECKSUM");
}
else
{
fprintf_s(oldfile, "%c", -checksum);
fclose(oldfile);
makeBackupFile(filename);
}
}
static int
writePacket (BrailleDisplay *brl, unsigned char code, const void *data, unsigned char length) {
MD_Packet packet;
unsigned char *byte = packet.fields.data.bytes;
packet.fields.soh = SOH;
packet.fields.stx = STX;
packet.fields.etx = ETX;
packet.fields.code = code;
packet.fields.length = length;
byte = mempcpy(byte, data, length);
uint16_t checksum = calculateChecksum(&packet.fields.stx, byte);
*byte++ = checksum & 0XFF;
*byte++ = checksum >> 8;
return writeBytes(brl, packet.bytes, byte-packet.bytes);
}
// FIXME: HAL for now this will only work for F4/F7 as flash layout is different
void writeEEPROM(void)
{
// Generate compile time error if the config does not fit in the reserved area of flash.
BUILD_BUG_ON(sizeof(master_t) > FLASH_TO_RESERVE_FOR_CONFIG);
HAL_StatusTypeDef status;
uint32_t wordOffset;
int8_t attemptsRemaining = 3;
suspendRxSignal();
// prepare checksum/version constants
masterConfig.version = EEPROM_CONF_VERSION;
masterConfig.size = sizeof(master_t);
masterConfig.magic_be = 0xBE;
masterConfig.magic_ef = 0xEF;
masterConfig.chk = 0; // erase checksum before recalculating
masterConfig.chk = calculateChecksum((const uint8_t *) &masterConfig, sizeof(master_t));
// write it
/* Unlock the Flash to enable the flash control register access *************/
HAL_FLASH_Unlock();
while (attemptsRemaining--)
{
/* Fill EraseInit structure*/
FLASH_EraseInitTypeDef EraseInitStruct = {0};
EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3; // 2.7-3.6V
EraseInitStruct.Sector = (FLASH_SECTOR_TOTAL-1);
EraseInitStruct.NbSectors = 1;
uint32_t SECTORError;
status = HAL_FLASHEx_Erase(&EraseInitStruct, &SECTORError);
if (status != HAL_OK)
{
continue;
}
else
{
for (wordOffset = 0; wordOffset < sizeof(master_t); wordOffset += 4)
{
status = HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, CONFIG_START_FLASH_ADDRESS + wordOffset, *(uint32_t *) ((char *) &masterConfig + wordOffset));
if(status != HAL_OK)
{
break;
}
}
}
if (status == HAL_OK) {
break;
}
}
HAL_FLASH_Lock();
// Flash write failed - just die now
if (status != HAL_OK || !isEEPROMContentValid()) {
failureMode(FAILURE_FLASH_WRITE_FAILED);
}
resumeRxSignal();
}
