Unverified Commit d11fc811 authored by Birte Kristina Friesel's avatar Birte Kristina Friesel
Browse files

lm75: correctly read out sub-zero temperatures

parent 5d3d59ce

src/driver/lm75.cc

+3 −1
Original line number Diff line number Diff line
@@ -10,6 +10,8 @@ 
#include "driver/soft_i2c.h"

#endif



#include <stdint.h>



float LM75::getTemp()

{

	txbuf[0] = 0;
@@ -17,7 +19,7 @@ float LM75::getTemp() 
	rxbuf[1] = 0;

	i2c.xmit(address, 1, txbuf, 2, rxbuf);



	return rxbuf[0] + (rxbuf[1] / 256.0);

	return (int8_t)rxbuf[0] + (rxbuf[1] / 256.0);

}



unsigned int LM75::getOS()