Electronic – LSM303C temperature sensor

memstemperature

I'm trying to read the temperature sensor from the LSM303C. I have enabled the sensor and can see the values move when the temperature is changed. But, the format of the sensor data is not provided by any data sheet or resource I can find on the web. Does anyone have this information?

Thanks in advance.

Best Answer

From the datasheet:

It's 16 bits, as you can see from 8.38, and 2's complement.

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It's in °C and the radix point is left of the 3rd bit, which you can tell from 2.2 enter image description here

So 25.0 degrees C is 0x00C8

and -40.0 degrees C is 0xFEC0

Edit: From actual experiment (see comments from OP) the °C temperature is offset so +25 must be added to get the correct temperature. That does not contradict the datasheet but adds an unexpected bias that contradicts assumptions.

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