这里我附上了我的代码集。这就是我在代码中使用函数01的方式。功能齐全。对于函数1,我用它的屏幕截图来获得错误。我还尝试了MCC生成的CRC硬件检查,但它不起作用。有人可以在CODRESIALL DATA()中使用这些CRC函数,是我在中断中调用的函数。我正在检查MasaGeS01 01、00、00、00、31、FDD、DRXBUF[0 ]=01//设备ID ALWAXRXXBUF[1 ]=01//函数CODRESXBUF[2 ]=00//更高字节的起始AdvestRSXBUF[OUT] =起始/地址的Buff[S]的起始/地址寄存器BUF[y]=/ /更高字节的结束AddiSRSXBUF[y]=Ey//Load字节结尾的AdvestRSXBUF[y]=FD/CRC1RXBUF(7)=DE//CRC2第一次检查CRC1和CRC2是否有效,如果ValueTrrxBuf(0)=01与设备ID匹配,则TrxBuf(1)=01与函数代码匹配,然后计算长度分配起始地址和长度存储值并检查CRC。tion
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以下为原文
Here i have attached my code sets.
This is How i am using function 01 in my code. For Function3 its working fine. FOr function 1 i used to get error attached their screen shot.
I also Tried MCC generated CRC hardware Check but it not working. Can someone guide using these CRC function in code
Serial_Data()
Is function i am calling in interrupt. I am checking first 8 byte of messages 01 01 00 00 00 31 fd de
rxbuf[0]= 01 //device Id always
rxbuf[1]= 01 //Functional code
rxbuf[2]= 00 //higher byte of start address
rxbuf[3]= 00 //Lower byte of start address
rxbuf[4]= 00 //higher byte of end address
rxbuf[5]= 31 //Lower byte of end address
rxbuf[6]= FD //CRC1
rxbuf[7]= DE //CRC2
First i will check CRC1 & CRC2 is Valid or not if valid
Get rxbuf[0]= 01 match with device ID then
rxbuf[1]= 01 match with function code
Then calculate length assign start address & length
Store the values & check CRC again.
#define READ_REG 1
static const unsigned long crc16_tab[] = {
0x0000, 0xC0C1, 0xC181, 0x0140, 0xC301, 0x03C0, 0x0280, 0xC241,
0xC601, 0x06C0, 0x0780, 0xC741, 0x0500, 0xC5C1, 0xC481, 0x0440,
0xCC01, 0x0CC0, 0x0D80, 0xCD41, 0x0F00, 0xCFC1, 0xCE81, 0x0E40,
0x0A00, 0xCAC1, 0xCB81, 0x0B40, 0xC901, 0x09C0, 0x0880, 0xC841,
0xD801, 0x18C0, 0x1980, 0xD941, 0x1B00, 0xDBC1, 0xDA81, 0x1A40,
0x1E00, 0xDEC1, 0xDF81, 0x1F40, 0xDD01, 0x1DC0, 0x1C80, 0xDC41,
0x1400, 0xD4C1, 0xD581, 0x1540, 0xD701, 0x17C0, 0x1680, 0xD641,
0xD201, 0x12C0, 0x1380, 0xD341, 0x1100, 0xD1C1, 0xD081, 0x1040,
0xF001, 0x30C0, 0x3180, 0xF141, 0x3300, 0xF3C1, 0xF281, 0x3240,
0x3600, 0xF6C1, 0xF781, 0x3740, 0xF501, 0x35C0, 0x3480, 0xF441,
0x3C00, 0xFCC1, 0xFD81, 0x3D40, 0xFF01, 0x3FC0, 0x3E80, 0xFE41,
0xFA01, 0x3AC0, 0x3B80, 0xFB41, 0x3900, 0xF9C1, 0xF881, 0x3840,
0x2800, 0xE8C1, 0xE981, 0x2940, 0xEB01, 0x2BC0, 0x2A80, 0xEA41,
0xEE01, 0x2EC0, 0x2F80, 0xEF41, 0x2D00, 0xEDC1, 0xEC81, 0x2C40,
0xE401, 0x24C0, 0x2580, 0xE541, 0x2700, 0xE7C1, 0xE681, 0x2640,
0x2200, 0xE2C1, 0xE381, 0x2340, 0xE101, 0x21C0, 0x2080, 0xE041,
0xA001, 0x60C0, 0x6180, 0xA141, 0x6300, 0xA3C1, 0xA281, 0x6240,
0x6600, 0xA6C1, 0xA781, 0x6740, 0xA501, 0x65C0, 0x6480, 0xA441,
0x6C00, 0xACC1, 0xAD81, 0x6D40, 0xAF01, 0x6FC0, 0x6E80, 0xAE41,
0xAA01, 0x6AC0, 0x6B80, 0xAB41, 0x6900, 0xA9C1, 0xA881, 0x6840,
0x7800, 0xB8C1, 0xB981, 0x7940, 0xBB01, 0x7BC0, 0x7A80, 0xBA41,
0xBE01, 0x7EC0, 0x7F80, 0xBF41, 0x7D00, 0xBDC1, 0xBC81, 0x7C40,
0xB401, 0x74C0, 0x7580, 0xB541, 0x7700, 0xB7C1, 0xB681, 0x7640,
0x7200, 0xB2C1, 0xB381, 0x7340, 0xB101, 0x71C0, 0x7080, 0xB041,
0x5000, 0x90C1, 0x9181, 0x5140, 0x9301, 0x53C0, 0x5280, 0x9241,
0x9601, 0x56C0, 0x5780, 0x9741, 0x5500, 0x95C1, 0x9481, 0x5440,
0x9C01, 0x5CC0, 0x5D80, 0x9D41, 0x5F00, 0x9FC1, 0x9E81, 0x5E40,
0x5A00, 0x9AC1, 0x9B81, 0x5B40, 0x9901, 0x59C0, 0x5880, 0x9841,
0x8801, 0x48C0, 0x4980, 0x8941, 0x4B00, 0x8BC1, 0x8A81, 0x4A40,
0x4E00, 0x8EC1, 0x8F81, 0x4F40, 0x8D01, 0x4DC0, 0x4C80, 0x8C41,
0x4400, 0x84C1, 0x8581, 0x4540, 0x8701, 0x47C0, 0x4680, 0x8641,
0x8201, 0x42C0, 0x4380, 0x8341, 0x4100, 0x81C1, 0x8081, 0x4040
};
unsigned short crc16(char * buf, unsigned short size)
{
unsigned int crc = 0;
while (size--)
crc = (crc << 8) ^ crc16_tab[(crc >> 8) ^ * buf++];
return crc;
}
void Serial_Data()
{
unsigned int address,crc1,crc2;
unsigned char length,i;
unsigned char Data_Len_Count;
crc2=crc16(&rxbuf[0],6); // check first 6 byte.
__delay_ms(10);
if((rxbuf[6]==(unsigned char)(crc2))&&(rxbuf[7]==((unsigned char)(crc2>>8))))
{
if(rxbuf[0]==Device_ID)// Checking Serial Data first byte match with Device Id or not
{
if(rxbuf[1]==READ_REG)// Checking Serial Data first byte match with Function code
{
// assigning start Address
address=(((unsigned int)(rxbuf[2]<<8))+((unsigned int)(rxbuf[3])));
if(rxbuf[5]>=1)
{
length=rxbuf[5];
address=0X01;
ser_data[0]=Device_ID;
ser_data[1]=rxbuf[1];
ser_data[2]=length;
ser_data[3]=00;// Put higher byte address Here
ser_data[4]=01;// Put Lower byte address Here
ser_data[5]=00;
ser_data[6]=04;
ser_data[7]=00;
ser_data[8]=05;
ser_data[9]=00;
ser_data[10]=06;
ser_data[11]=00;
ser_data[12]=07;
ser_data[13]=00;
// Response message will start from Here
crc_data[0]=Device_ID;
crc_data[1]=rxbuf[1];
crc_data[2]=length;
j=3;
for(i=address;i<((address+length));i++)
{
crc_data[j++]=ser_data[i+3];
}
crc1 =crc16(&crc_data[0],(length+3)); //crc function for response protocol from the device
Serial_1_Send_byte(ser_data[0]);
Serial_1_Send_byte(rxbuf[1]);
Serial_1_Send_byte(ser_data[2]);
for(i=address;i<((address+length));i++)
{
Serial_1_Send_byte(ser_data[i+3]);
}
Serial_1_Send_byte((unsigned char)crc1);
Serial_1_Send_byte((unsigned char)(crc1>>8));
Serial_1_Send_byte(crc_m***);
Serial_1_Send_byte(crc_l***);
for(i=0;i<30;i++)
{
Serial_1_Send_byte(0);
}
}
}
__delay_ms(5);
}
}
}
earlier code look like below crc check function
unsigned int crc_fn(unsigned char *dpacket,unsigned int len) // CRC Function(Error calcualtion)
{
unsigned int crc = 0xffff,poly = 0xa001;
unsigned int i=0;
for(i=0;i
{
crc^= dpacket
;
for(j=0;j<8;j++)
{
if(crc & 0x01)
{
crc >>= 1;
crc ^= poly;
}
else
crc >>= 1;
}
}
return (crc);
}
Attached Image(s)