Rev 1767 Rev 1774
-   1 #include "1wire.c"
1   2  
2 float ds1820_read() 3 float ds1820_read()
3 { 4 {
4 int8 busy=0, temp1, temp2; 5 int8 busy=0, temp1, temp2;
5 signed int16 temp3; 6 signed int16 temp3;
6 float result; 7 float result;
7   8  
8 onewire_reset(); 9 onewire_reset();
9 onewire_write(0xCC); 10 onewire_write(0xCC);
10 onewire_write(0x44); 11 onewire_write(0x44);
11   12  
12 while (busy == 0) -  
13 busy = onewire_read(); 13 while (busy == 0) busy = onewire_read();
14   14  
15 onewire_reset(); 15 onewire_reset();
16 onewire_write(0xCC); 16 onewire_write(0xCC);
17 onewire_write(0xBE); 17 onewire_write(0xBE);
18 temp1 = onewire_read(); 18 temp1 = onewire_read();
19 temp2 = onewire_read(); 19 temp2 = onewire_read();
20 temp3 = make16(temp2, temp1); 20 temp3 = make16(temp2, temp1);
21   21  
22 result = (float) temp3 / 16.0; //calculation pro DS18B20 with 0.1 deg C 22 result = (float) temp3 / 16.0; //calculation pro DS18B20 with 0.1 deg C
23   23  
24   -  
25 delay_ms(200); -  
26 return(result); 24 return(result);
27   -  
28 } 25 }