/programy/C/PIC_C/mereni/teplomer/ds1820.c |
---|
0,0 → 1,28 |
float ds1820_read() |
{ |
int8 busy=0, temp1, temp2; |
signed int16 temp3; |
float result; |
onewire_reset(); |
onewire_write(0xCC); |
onewire_write(0x44); |
while (busy == 0) |
busy = onewire_read(); |
onewire_reset(); |
onewire_write(0xCC); |
onewire_write(0xBE); |
temp1 = onewire_read(); |
temp2 = onewire_read(); |
temp3 = make16(temp2, temp1); |
result = (int) (temp3/16); //calculation pro DS18B20 with 0.1 deg C |
return(result); |
} |