https://devzone.nordicsemi.com/f/nordic-q-a/17981/can-anyone-explain-this-functionHi i have to read some data from a temperature sensor. twi_temp_read((int8_t *)&amp;temperature); this below what do? temperature = ((temperature &gt;&gt; 12) &amp; 0x000F) | (temperature &lt;&lt; 4); if((temperature &amp; 0x0800) != 0){ // minus temperatureen-USTelligent Community 13Fri, 25 Nov 2016 14:00:17 GMThttps://devzone.nordicsemi.com/thread/69330?ContentTypeID=1Fri, 25 Nov 2016 14:00:17 GMT137ad170-7792-4731-bb38-c0d22fbe4515:824e41b5-cad7-44f3-b41b-2275343f140fRoberto<p>Hi Jorgen exact!is a tmp102! thanks</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/69329?ContentTypeID=1Fri, 25 Nov 2016 12:21:41 GMT137ad170-7792-4731-bb38-c0d22fbe4515:96637ef8-04e8-45f6-908e-090d1a9bc9ffJ&#248;rgen Holmefjord<p>Hi,</p> <p>Where did you get this code from? Which sensor are you reading?</p> <p>It looks like the code does conversion from binary to decimal temperature and stores this value in a string. For instance the <a href="http://www.ti.com.cn/cn/lit/ds/symlink/tmp102.pdf">TI TMP102 I2C temperature sensor</a> has a resolution of 0.0625°C, and you would have to use a function like this to convert the binary value read over I2C if you want to display the value as decimal number.</p> <p>Best regards,</p> <p>Jørgen</p><div style="clear:both;"></div>