| /Designs/Measuring_instruments/AWS01A/SW/ds1820.c |
|---|
| 35,7 → 35,7 |
| float ds1820_read() |
| { |
| unsigned int1 busy=0; |
| unsigned int1 ready=0; |
| int8 SN[10]; |
| unsigned int8 n; |
| float result; |
| 44,7 → 44,12 |
| onewire_write(0xCC); |
| onewire_write(0x44); |
| while (busy == 0) busy = onewire_read(); |
| for(n=0;n<200;n++) // wait until sensor is busy or timeout will be over |
| { |
| ready = onewire_read(); |
| if(ready == TRUE) break; |
| delay_ms(1); |
| } |
| onewire_reset(); |
| onewire_write(0xCC); |
| 58,7 → 63,7 |
| } |
| else |
| { |
| result=-273.15; |
| result=-27315; |
| } |
| return(result); |
| } |