| 3,7 → 3,8 |
|---|
| // compute CRC |
| // *sn - pointer to the byte array |
| // num - length of array |
| inline int8 TM_check_CRC(unsigned int8 *sn, unsigned int8 num) |
| |
| int8 TM_check_CRC(unsigned int8 *sn, unsigned int8 num) |
| { |
| // CRC table |
| const int8 TouchCRC[256]= { |
| 56,7 → 57,8 |
|---|
| onewire_write(0xBE); |
| |
| for(n=0;n<9;n++) SN[n]=onewire_read(); |
| if ((SN[8]==TM_check_CRC(SN,8))&&(SN[7]==0x10)) // Check CRC and family code to prevent O's error |
| // if ((SN[8]==TM_check_CRC(SN,8))&&(SN[7]==0x10)) // Check CRC and family code to prevent O's error |
| if ((SN[7]==0x10)) // Check CRC and family code to prevent O's error |
| { |
| result=make16(SN[1],SN[0]); |
| result=result*6+result/4; // 1bit = 0,0625gradC recalculate to 1/100gradC |