/Designs/Measuring_instruments/AWS01A/SW/ds1820.c |
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0,0 → 1,25 |
#include "1wire.c" |
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 = (float) temp3 / 16.0; //calculation pro DS18B20 with 0.1 deg C |
return(result); |
} |