/**
* @brief 保存一个BIN文件
* @param file 文件名
* @param magic 文件标识字
* @param buffer 缓存区指针
* @param len 缓存区长度
* @return 成功返回0, 否则失败
*/
int SaveBinFile(const char *file, unsigned long magic, const unsigned char *buffer, int len)
{
bin_filehead_t head;
FILE *pf;
unsigned char *headp;
//printf("open %s\n", file);
if((len <= 0) || (len > MAX_FILELEN)) {
ErrorLog("invalid len(%d)\n", len);
return 1;
}
AssertLogReturn(NULL==file, 1, "null file\n");
head.magic = magic;
head.len = len;
head.datacrc = CalculateCRC(buffer, len);
headp = (unsigned char *)&(head.datacrc);
head.headcrc = CalculateCRC(headp, sizeof(head)-2);
remove(file);
pf = fopen(file, "wb");
if(NULL == pf) {
ErrorLog("can not open %s for write\n", file);
return 1;
}
fwrite(&head, sizeof(head), 1, pf);
fwrite(buffer, len, 1, pf);
fclose(pf);
return 0;
}
int CSyncer::ProcessUnits(bool checksum)
{
if (!populated) {
//Populate the list of unit files to consider
files = CFileHandler::FindFiles("units/*.fbi");
populated = true;
}
if (files.size() == 0) {
return 0;
}
string curFile = files.back();
files.pop_back();
size_t len = curFile.find_last_of("/")+1;
string unitName = curFile.substr(len, curFile.size() - 4 - len);
transform(unitName.begin(), unitName.end(), unitName.begin(), (int (*)(int))tolower);
string perror("");
TdfParser *parser = new TdfParser();
try {
parser->LoadFile("units/" + unitName + ".fbi");
} catch (TdfParser::parse_error& pe) {
perror = unitName + " (" + string(pe.what()) + ")";
}
Unit u;
if (checksum) {
u.fbi = CalculateCRC("units/" + unitName + ".fbi");
u.cob = CalculateCRC("scripts/" + unitName + ".cob");
//The model filenames has to be figured out from the fbi file
string modelName = parser->SGetValueDef(unitName, "unitinfo\\Objectname");
string deadName = parser->SGetValueDef(unitName + "_dead", "unitinfo\\Corpse");
u.model = CalculateCRC("objects3d/" + modelName + ".3do");
u.model += CalculateCRC("objects3d/" + deadName + ".3do");
}
u.fullName = parser->SGetValueDef("unknown", "unitinfo\\Name");
if (perror.length() > 0)
u.fullName = perror;
units[unitName] = u;
delete parser;
//If we are done, map id numbers to names
if (files.size() == 0) {
MapUnitIds();
}
return (int)files.size();
}
/**
* @brief 读取一个BIN文件
* 与ReadBinFile不同的是,buffer内容在读取失败的情况下也有可能修改
* 因此需要应用程序分配专门的buffer
* 一般用来读取数据文件
* 操作比ReadBinFile少了内存分配操作, 但增加了数据不安全性, 使用时要小心
* @param file 文件名
* @param magic 文件标识字
* @param buffer Cache缓存区指针
* @param len 缓存区长度
* @return 成功返回实际读取长度,失败返回-1
*/
int ReadBinFileCache(const char *file, unsigned long magic, unsigned char *buffer, int len)
{
bin_filehead_t head;
FILE *pf;
unsigned short crc;
if((len <= 0) || (len > MAX_FILELEN)) {
ErrorLog("invalid len(%d)\n", len);
return -1;
}
AssertLogReturn(NULL==file, -1, "null file\n");
pf = fopen(file, "rb");
if(NULL == pf) return -1;
if(fread(&head, sizeof(head), 1, pf) <= 0) {
ErrorLog("%s file head too short\n", file);
goto mark_fail;
}
if(head.magic != magic) {
ErrorLog("%s magic invalid(0x%08X)\n", file, head.magic);
goto mark_fail;
}
if(head.len <= 0 || head.len > len) {
ErrorLog("%s len invalid(%d)\n", file, head.len);
goto mark_fail;
}
crc = CalculateCRC((unsigned char *)&(head.datacrc), sizeof(head)-2);
if(head.headcrc != crc) {
ErrorLog("%s head crc erorr(0x%04X, should be 0x%04X)\n", file, head.headcrc, crc);
goto mark_fail;
}
if(fread(buffer, head.len, 1, pf) <= 0) {
ErrorLog("%s len too long(%d)\n", file, head.len);
goto mark_fail;
}
crc = CalculateCRC(buffer, head.len);
if(head.datacrc != crc) {
ErrorLog("%s data crc erorr(0x%04X, should be 0x%04X)\n", file, head.datacrc, crc);
goto mark_fail;
}
if(len > head.len) len = head.len;
fclose(pf);
return len;
mark_fail:
fclose(pf);
return -1;
}
/**
* @brief 检查记录的合法性
* @param buf 缓存区指针
* @param len 缓存区长度
* @return 合法记录返回1, 非法记录返回0, 空记录返回-1
*/
static inline int ValidRecord(const unsigned char *buf, int len)
{
unsigned short crc;
rec_head_t *phead = (rec_head_t *)buf;
int i;
if(phead->magic != FLAT_MAGIC) {
if(phead->magic == 0xffff && phead->crc == 0xffff) goto mark_empty;
else return 0;
}
crc = CalculateCRC(buf+sizeof(rec_head_t), len-sizeof(rec_head_t));
if(crc != phead->crc) return 0;
return 1;
mark_empty:
buf += sizeof(rec_head_t);
len -= sizeof(rec_head_t);
for(i=0; i<len; i++) {
if(0xff != *buf++) return 0;
}
return -1;
}
/**
* @brief 写入FLAT文件数据
* @param sector 文件扇区号
* @param buf 缓存区指针
* @param len 缓存区长度
* @return 成功返回实际写入长度, 失败返回-1
*/
int WriteFlatFile(unsigned int sector, const unsigned char *buf, int len)
{
rec_head_t head;
int rtn = 0;
unsigned char memcache[BUFFER_SIZE];
unsigned char* pmem = memcache;
AssertLogReturn(FlatFid<0, -1, "invalid flat id(%d)\n", sector);
AssertLogReturn(sector >= MAX_SECTOR, -1, "invalid sector(%d)\n", sector);
AssertLogReturn(len <= 0, -1, "invalid len(%d:%d)\n", sector, len);
AssertLogReturn(len > REC_DATASIZE(sector), -1, "invalid record size(%d:%d)\n", sector, REC_DATASIZE(sector));
head.magic = FLAT_MAGIC;
head.crc = CalculateCRC(buf, len);
memset(pmem, 0x0, sizeof(memcache));
memcpy(pmem, (void*)&head, sizeof(head)); pmem += sizeof(head);
memcpy(pmem, buf, len);
FLAT_LOCK;
ioctl(FlatFid, 0, §or); //选择写入的扇区
rtn = write(FlatFid, memcache, sizeof(head)+len);
FLAT_UNLOCK;
//DebugPrint(0, "writeflat id is %d, rtn is %d\n", sector, rtn);
return rtn;
}
void parser(int type, unsigned char addr, unsigned char *data, int len){
if(CalculateCRC(data,len-2) != data[len-2] + data[len-1]*256){
printf("ERROR checking CRC!!\n");
int delay = 10000000 + rand()%10000000;
sleep(1);
while(delay > 0) delay -= 1;
return;
}
}
//--------------------------------------------------------------------------
// Module:
// VerifyCRCAtStart
//
/// This function executes the entire CRC test and verifies that
/// contents of the ROM are valid.
///
/// returns BOOLEAN - TRUE if test passed
///
//--------------------------------------------------------------------------
BOOLEAN VerifyCRCAtStart (void)
{
HexLEDUpdate (0xCB);
if (CalculateCRC (ROM_START, ROM_END, 0))
{
return FALSE;
}
else
{
return TRUE;
}
}
FLARM::FrameHeader
FLARM::PrepareFrameHeader(unsigned sequence_number, MessageType message_type,
const void *data, size_t length)
{
assert((data != NULL && length > 0) || (data == NULL && length == 0));
FrameHeader header;
header.SetLength(8 + length);
header.version = 0;
header.SetSequenceNumber(sequence_number++);
header.type = (uint8_t)message_type;
header.SetCRC(CalculateCRC(header, data, length));
return header;
}
/*
组包，包格式：
同步域 包计数域 数据长度域 数据域 校验域
4字节 1字节 2字节 n字节 2字节
输入参数：
data: 上层传递下来的数据
len: 数据的长度
输出参数：
outLen：返回值的长度
返回值：
按照以上格式组好的包
*/
BYTE* PackField(char* data,int len,int *outLen)
{
int bufLen = len + 9;
short crc;
BYTE *buf = NULL;
int offset = 0;
int dataLen = 0;
buf = (BYTE*)malloc(bufLen);
//buf = new BYTE[bufLen];
offset += PackSYNC(buf + offset);
offset += PackCount(buf + offset);
offset += PackLength(len,buf+offset);
dataLen = PackData(data,len,buf+offset);
// crc校验只需要校验数据域就行
crc = CalculateCRC(buf+offset,dataLen);
offset += dataLen;
offset += PackCRC(crc,buf+offset);
*outLen = offset;
return buf;
}
void SendFrame(uint8_t fr_nr)
{
// init frame to send
memcpy_P(&frame[0], &ec_frames[fr_nr], sizeof(modbus_head_t));
CalculateCRC(6); // add crc bytes to the end of frame starting form byte position 6
#if _DEBUG_>1
Serial.print(F("Sending EnergyCam frame:"));
for (byte i=0; i<8; i++) {
Serial.print(' ');
byte tmp = frame[i];
if ( tmp<16 ) Serial.print(0);
Serial.print(tmp, HEX);
}
Serial.println();
#endif
while ( (millis()-startDelay)<2 ) WDG_RST; // wait for frame delay
// prepare to send
#ifdef USE_RS485
RS485_ENABLE_TX;
delayMicroseconds(100);
// write RS485 header
Serial1.write(EC_ID);
Serial1.write(0xFF^EC_ID);
Serial1.write(frame, 8);
// prepare to receive the answer
Serial1.flush(); // wait till all data was sent
delayMicroseconds(300);
RS485_ENABLE_RX;
#else
ec_client.write((byte)0); // wake-up from sleep mode
delay(2); // frame delay
//frameSize = 8;
ec_client.write(frame, 8);
// wait till last byte was sent
// delayMicroseconds(frameDelay);
delay(2); // frame delay
#endif
Modbus_WaitForReply(); // wait one second long till complete reply frame is received
// return error_code;
}
//===============================================================================================
// FUNCTION: ValidateCRC
// PURPOSE: Validates the CRC in the FileInfo matches the CRC of the file.
//
BOOL CABF2ProtocolReader::ValidateCRC()
{
MEMBERASSERT();
if( m_pFH->nCRCEnable != ABF_CRC_ENABLED )
return TRUE;
// CRC checking required.
Read( 0 );
#if _DEBUG
// Get the total length of the file.
#ifdef _DEBUG
LONGLONG llFileLength = m_pFI->GetFileSize();
UINT uHeaderSize = sizeof( m_FileInfo );
ASSERT( llFileLength > uHeaderSize );
#endif // _DEBUG
#endif
// Keep expected CRC value from header and Zero the lFileCRC.
UINT uExpectedCRC = m_FileInfo.uFileCRC;
m_FileInfo.uFileCRC = 0;
UINT uFileCRC = CalculateCRC( &m_FileInfo, sizeof( m_FileInfo ) );
// Restore the original CRC.
m_FileInfo.uFileCRC = uExpectedCRC;
// Compare expected CRC with file CRC.
if ( uFileCRC != uExpectedCRC )
{
TRACE2( "File CRC Validation Failed: Expected %X, Calculated %X\n", uExpectedCRC, uFileCRC );
return FALSE;
}
TRACE1( "File CRC Validation OK: %X\n", uFileCRC);
return TRUE;
}
void quendi_send_data(int dsock, unsigned frame_size, int block_size)
{
int i;
char buffer[100];
unsigned short crc;
if (block_size > 0) {
snprintf(buffer, 100, "%i Frame Block Transfer Starting", block_size);
quendi_respond(QUENYA_RESPONSE_SENDING_DATA, buffer);
for (i = 0; i < block_size; ++i) {
if (write(dsock, quendi_input_buffer[i], frame_size) < 0)
berror(err, "failed to write to socket");
}
crc = CalculateCRC(CRC_SEED, quendi_input_buffer[0],
frame_size * block_size);
sprintf(buffer, "0x%04X Block CRC", crc);
quendi_respond(QUENYA_RESPONSE_BLOCK_CRC, buffer);
}
return;
}
/*****************************************
功能: 解出全部据数
本函数调用的函数清单: 无
调用本函数的函数清单: main
输入参数: *InDataBuf 采样值地址
lenth 总长度
startlen 开始的地方
MmobileType 手机类型
输出参数: *OutDataBuf 数据保存的地方
*endlen 解到哪点了
函数返回值说明: 0为出错，1为成功解出8位数据
使用的资源
******************************************/
BYTE GetAllData(BYTE *OutDataBuf, short *InDataBuf,unsigned long lenth,unsigned long *endlen,BYTE MobileType)
{
unsigned long i = *endlen - 1;//指向第i个点
unsigned long j = 0;//指向第j个解出的数据
unsigned long DataLenth = 0;//整个数据的长度，由数据前两字节表示
float LengthOfZorePassage = 0;//过零点之间宽度
float LastRatio = 0;///过零点上一次的比率
float RatioOfZorePassage = 0;//过零点这一次的比率
unsigned long datastart = 0;//当前在解的波的开始点
BYTE bit0flag = 0;//用于实现两个小波表示1
BYTE bitindex = 0;//解出来的数据的位数
unsigned short crc = 0;//用于校验
/************************************/
//下面的参数用于实现0 、1 幅度的对比//
unsigned short highest = 0;//每一位中，采样值的最高点//
unsigned long sum0 = 0;//0的总和
unsigned long sum1 = 0;// 1的总和
unsigned short number0 = 0;//0的个数
unsigned short number1 = 0;// 1的个数
unsigned long k = 0;//用于实现查找每一位中的最高采样率 等 普通循环
float RatioOf0b1 = 0;// 所有1 中最高采样之和 与 所有0中最高采样之和 的比率。
/************************************/
/************************************/
//下面的参数用于实现波形兼容性检查////
float MaxOf0Wide = 0;//0中宽度偏差之最
float MaxOf1Wide = 0;// 1中宽度偏差之最
/************************************/
for(;i<lenth ;)
{
datastart = i;//当前波的开始点
LastRatio = RatioOfZorePassage;//保存上一次的过零点比率
if(InDataBuf[i] >= 0)//如果采样值大于等于0
{
while(InDataBuf[i] >= 0)//直到采样值小于0
{
i++;//下一个采样点
}
}
else//如果采样值小于0
{
while(InDataBuf[i] < 0)//直到采样值大于0
{
i++;//下一个采样点
}
}
RatioOfZorePassage = ((float)(abs(InDataBuf[i]))) / ( (float)(abs(InDataBuf[i - 1])) + (float)(abs(InDataBuf[i])) );
if(i == 28036)
{
i = i;
}
//记下当前波过零点之间的宽度
LengthOfZorePassage =LastRatio + (i - datastart - 1) + (1 - RatioOfZorePassage);
if(( LengthOfZorePassage >= (3.0/ 2.0)*((float) MobileType+1.0) )
&&(LengthOfZorePassage<(12.0/ 3.0)*((float) MobileType+1.0))) //如果是大波
{
if(bit0flag == 1)//小波后面是大波就是出错了
{
printf("\ndata error,0after1 \n");
*endlen = i;
return 0;
}
/********************************************************/
highest = abs(InDataBuf[datastart]);//置初值
for(k = datastart+1;k < i;k++)//找出该位中的最高采样值
{
if( (abs(InDataBuf[k])) > highest )
{
highest = abs(InDataBuf[k]);
}
}
if(highest < 300)//最高采样值不应该比300还低
{
printf("\ndata error,0 smoll than 300 \n");
*endlen = i;
return 0;
}
number0++;//多少个0
sum0 += highest;//统计0的采样值之和
/********************************************************/
if( fabs(LengthOfZorePassage - (MobileType+1)*2) > fabs(MaxOf0Wide) )
{
MaxOf0Wide = (LengthOfZorePassage - (MobileType+1)*2);
}
/********************************************************/
OutDataBuf[j] &= ~(1<<(7-bitindex));
bitindex++;
}
else if((LengthOfZorePassage>= (1.0/3.0)*((float) MobileType+1.0))
&&(LengthOfZorePassage< (3.0/2.0)*((float) MobileType+1.0))&&(i != *endlen)) //如果是小波
{
/********************************************************/
if( fabs(LengthOfZorePassage - (MobileType+1)) > fabs(MaxOf1Wide) )
{
MaxOf1Wide = (LengthOfZorePassage - (MobileType+1));
}
/********************************************************/
if(bit0flag == 0)//如果是第一个小波
{
bit0flag = 1;
continue;
}
else//如果是第二个小波
{
/********************************************************/
highest = abs(InDataBuf[datastart]);//置初值
for(k = datastart+1;k < i;k++)//找出该位中的最高采样值
{
if( abs(InDataBuf[k]) > highest )
{
highest = abs(InDataBuf[k]);
}
}
if(highest < 300)//最高采样值不应该比300还低
{
printf("\ndata error,1 smoll than 300 \n");
*endlen = i;
return 0;
}
number1++;//多少个1
sum1 += highest;//统计1的采样值之和
/********************************************************/
OutDataBuf[j] |= 1<<(7-bitindex);
bitindex++;
bit0flag = 0;//两个小波为"1"
}
}
else
{
if(i == *endlen)//第一个波只取了一点，所以肯定是非常小的
{
continue;
}
printf("\ndata error,too long or small \n");
*endlen = i;
return 0;//出现其它的波，直接认为出错了
}
if( bitindex == 8 )//8位1字节
{
printf("%02x,", OutDataBuf[j]);//打印数据
j++;
bitindex = 0;
}
if((j == 1) && (bitindex == 0))// 一开始1个字节是计数器
g_cPackageCount = OutDataBuf[0];
if((j == 3)&&(bitindex == 0))// 接下来两个字节是数据长度
{
DataLenth = OutDataBuf[1] | (OutDataBuf[2] << 8);
}
//if(( j == 4)&&(bitindex == 0))
if(( j == DataLenth + 3 + 2) && (j >= 3))//全部解出来了
{
#if 0
MaxOf0Wide = (3*MaxOf0Wide/(MobileType + 1)/2);
MaxOf1Wide = (3*MaxOf1Wide/(MobileType + 1));
printf("\nMaxOf0Wide is %f%%\n",(3*MaxOf0Wide/(MobileType + 1)/2)*100);//打印
printf("\nMaxOf1Wide is %f%%\n",(3*MaxOf1Wide/(MobileType + 1))*100);//打印
for(k = 2; k < DataLenth+1; k++)//计算校验，除长度之外，全部异或
{
crc ^= OutDataBuf[k];
}
if(crc != OutDataBuf[DataLenth + 1])//如果校验通不过
{
printf("\n CRC error \n"); //打印校验出错
*endlen = i;
return 0;//校验出错
}
#endif
/*************************************************************************CRC16**/
crc = OutDataBuf[DataLenth + 3] | (OutDataBuf[DataLenth + 4] << 8);
/* BYTE OutDataBuf111[3000] = {0};
BYTE OutDataBuf1111[4] = {0x55,0x55,0x01,0x01};
memset(OutDataBuf111, 0,3000);
memcpy(OutDataBuf111,OutDataBuf1111,4);
memcpy(OutDataBuf111+4,OutDataBuf,DataLenth);*/
if(crc != CalculateCRC(OutDataBuf+3,DataLenth))//如果校验通不过
{
printf("\n CRC error \n"); //打印校验出错
*endlen = i;
return 0;//校验出错
}
/***********************************************************************************/
printf("\n end \n\n");
*endlen = i;
return 1;
}
}
printf("\ndata error,no data \n");
*endlen = i;
return 0;//没有数据
}
void go(){
struct termios tty;
int fd = open("/dev/ttyAMA0", O_RDWR);
if(fd<0){
fprintf(stderr, "Unable to open serial port\n");
return;
}else{
printf("ttyAMA0 opened!(%d)\n", fd);
}
memset(&tty,0,sizeof(tty));
if(tcgetattr(fd, &tty) != 0){
printf("Error: %d, from tcgetattr: %s\n",errno,strerror(errno));
return;
}
// Set Baud Rate
cfsetospeed (&tty, B9600);
cfsetispeed (&tty, B9600);
// 8 Bits, No Parity and 1 Stop bit settings
tty.c_cflag &= ~PARENB; // No Parity
tty.c_cflag &= ~CSTOPB; // 1 Stop Bit
tty.c_cflag &= ~CSIZE;
tty.c_cflag |= CS8; // 8 Bits
tty.c_cflag &= ~CRTSCTS; // no flow control
tty.c_cc[VMIN] = 1; // read doesn't block
tty.c_cc[VTIME] = 10; // 0.5 seconds read timeout
tty.c_cflag |= (CLOCAL | CREAD ); // turn on READ & ignore ctrl lines
// Make raw
cfmakeraw(&tty);
// Flush Port, then applies attributes
tcflush( fd, TCIFLUSH );
if ( tcsetattr ( fd, TCSANOW, &tty ) != 0)
{
printf("Error %d from tcsetattr %s\n",errno,strerror(errno));
return;
}
unsigned char cmd[8];
int crc;
int n_written, n;
int i,j;
unsigned char addr;
char buf [16];
cmd[0]=0x01;
cmd[1]=0x03;
cmd[2]=0x00;
cmd[4]=0x00;
cmd[5]=0x01;
for(addr = 0; addr < 10 ; addr += 1){
cmd[3]=addr;
crc = CalculateCRC(cmd,6);
cmd[6] = crc % 256;
cmd[7] = (crc / 256)%256;
memset (&buf, '\0', sizeof buf);
n_written = write( fd, cmd, 8);
printf("%d sent >> ",n_written);
for(i=0;i<sizeof cmd;i++){
printf("%d ",cmd[i]);
}
printf("\n");
fflush(stdout);
n = read( fd, &buf , sizeof buf );
/* Error Handling */
if(n<0){
printf("Error reading: (%d) %s\n",errno,strerror(errno));
break;
}
if(n>0){
/* Print what I read... */
printf("%d read << ",n);
for(i=0;i<n;i++){
printf("%d ",buf[i]);
}
printf("\n");
parser(3, addr, buf, n);
}
}
cmd[1]=0x04;
for(addr = 0; addr < 3 ; addr += 1){
cmd[3]=addr;
crc = CalculateCRC(cmd,6);
cmd[6] = crc % 256;
cmd[7] = (crc / 256)%256;
memset (&buf, '\0', sizeof buf);
n_written = write( fd, cmd, 8);
printf("%d sent >> ",n_written);
for(i=0;i<sizeof cmd;i++){
printf("%d ",cmd[i]);
}
printf("\n");
fflush(stdout);
n = read( fd, &buf , sizeof buf );
/* Error Handling */
if(n<0){
printf("Error reading: (%d) %s\n",errno,strerror(errno));
break;
}
if(n>0){
/* Print what I read... */
printf("%d read << ",n);
for(i=0;i<n;i++){
printf("%d ",buf[i]);
}
printf("\n");
parser(4, addr, buf, n);
}
}
close(fd);
}
void Modbus_WaitForReply(void)
{
#define MODBUS_TIMEOUT 1000 // millis
mb_state = RECEIVING_DATA;
buffer = 0;
timeout = millis(); // wait up to one second for reply
// if ( (*ModbusPort).available() ) // is there something to check?
while ( (millis()-timeout)<MODBUS_TIMEOUT && mb_state==RECEIVING_DATA )
{
while ( ec_client.available() )
{
WDG_RST; // avoid reset
// The maximum number of bytes is limited to the serial buffer size of BUFFER_SIZE.
// If more bytes is received than BUFFER_SIZE, the overflow flag will be set and
// the serial buffer will be flushed as long as the slave is still responding.
uint8_t mb_data = ec_client.read();
//Serial.println(mb_data,HEX); // debug
if ( mb_state==RECEIVING_DATA ) {
if ( buffer==0 && mb_data==0 ) continue; // workaround for leading '0'
// read and check data byte
if ( buffer>=BUFFER_SIZE )
ProcessError(BUFFER_OVERFLOW); // buffer size overflow
else if ( buffer==0 && mb_data!=frame[0] )
ProcessError(WRONG_ID); // wrong slave ID
else if ( buffer==1 && (mb_data!=frame[1] || (0x80&frame[1])) )
ProcessError(WRONG_FUNCTION); // wrong function code
else if ( buffer==2 && mb_data!=2*frame[5] )
ProcessError(WRONG_DATA_LEN); // wrong data lenght
}
if ( mb_state==RECEIVING_DATA ) // store data byte only if no error detected so far
{
frame[buffer++] = mb_data; // store data and increment index
// check frame length and CRC
if ( buffer>2 && (frame[2]+5)==buffer ) // last byte of frame received
{
*(uint16_t *)&frame[buffer] = *(uint16_t *)&frame[buffer-2]; // save received CRC
CalculateCRC(buffer-2); // overwrite received CRC with calculated value in the frame buffer
if ( *(uint16_t *)&frame[buffer] != *(uint16_t *)&frame[buffer-2] )
ProcessError(WRONG_CRC); // wrong CRCs
else
ProcessSuccess(); // complete and correct reply frame received
}
}
// insert inter character time out if no new data received yet
if ( !ec_client.available() )
delayMicroseconds(T1_5);
}
////////// END OF FRAME RECPTION //////////
WDG_RST; // avoid reset
// The minimum buffer size from a slave can be an exception response of 5 bytes.
// If the buffer was partially filled set a frame_error.
if ( buffer>0 )
ProcessError(WRONG_FRAME_LEN); // too few bytes received
}
WDG_RST; // avoid reset
if ( buffer==0 )
ProcessError(REPLY_TIMEOUT); // timeout error, no data received
startDelay = millis(); // starting delay
}
/**
* @brief 读取一个BIN文件
* @param file 文件名
* @param magic 文件标识字
* @param buffer 缓存区指针
* @param len 缓存区长度
* @return 成功返回实际读取长度,失败返回-1
*/
int ReadBinFile(const char *file, unsigned long magic, unsigned char *buffer, int len)
{
bin_filehead_t head;
FILE *pf;
unsigned short crc;
unsigned char *memcache = NULL;
int memlen, filelen;
if((len <= 0) || (len > MAX_FILELEN)) {
ErrorLog("invalid len(%d)\n", len);
return -1;
}
AssertLogReturn(NULL==file, -1, "null file\n");
pf = fopen(file, "rb");
if(NULL == pf) return -1;
if(fread(&head, sizeof(head), 1, pf) <= 0) {
ErrorLog("%s file head too short\n", file);
goto mark_fail;
}
if(head.magic != magic) {
ErrorLog("%s magic invalid(0x%08X)\n", file, head.magic);
goto mark_fail;
}
if(head.len <= 0 || head.len > MAX_FILELEN) {
ErrorLog("%s len invalid(%d)\n", file, head.len);
goto mark_fail;
}
crc = CalculateCRC((unsigned char *)&(head.datacrc), sizeof(head)-2);
if(head.headcrc != crc) {
ErrorLog("%s head crc erorr(0x%04X, should be 0x%04X)\n", file, head.headcrc, crc);
goto mark_fail;
}
if(head.len > MAX_MEMLEN) memlen = MAX_MEMLEN;
else memlen = head.len;
memcache = malloc(memlen);
if(NULL == memcache) {
ErrorLog("malloc %d bytes fail\n", head.len);
goto mark_fail;
}
crc = 0;
filelen = head.len;
while(filelen > 0) {
if(fread(memcache, memlen, 1, pf) <= 0) {
ErrorLog("%s len too long(%d)\n", file, head.len);
goto mark_fail;
}
CalculateCRCStep(memcache, memlen, &crc);
filelen -= memlen;
if(filelen > 0 && filelen < memlen) memlen = filelen;
}
if(head.datacrc != crc) {
ErrorLog("%s data crc erorr(0x%04X, should be 0x%04X)\n", file, head.datacrc, crc);
goto mark_fail;
}
if(len > head.len) len = head.len;
if(head.len > MAX_MEMLEN) {
fseek(pf, sizeof(head), SEEK_SET);
if(fread(buffer, len, 1, pf) <= 0) {
ErrorLog("read file error\n");
goto mark_fail;
}
}
else {
memcpy(buffer, memcache, len);
}
free(memcache);
fclose(pf);
return len;
mark_fail:
if(NULL != memcache) free(memcache);
fclose(pf);
return -1;
}