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jacho |
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float ds1820_read() |
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{ |
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int8 busy=0, temp1, temp2; |
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signed int16 temp3; |
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float result; |
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onewire_reset(); |
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onewire_write(0xCC); |
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onewire_write(0x44); |
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while (busy == 0) |
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busy = onewire_read(); |
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onewire_reset(); |
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onewire_write(0xCC); |
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onewire_write(0xBE); |
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temp1 = onewire_read(); |
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temp2 = onewire_read(); |
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temp3 = make16(temp2, temp1); |
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result = (float) temp3 / 16.0; //calculation pro DS18B20 with 0.1 deg C |
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delay_ms(200); |
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return(result); |
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} |