https://devzone.nordicsemi.com/f/nordic-q-a/2656/nrf51822-why-i-read-2-complemenr-rssi-valueHi sir In the Developed zone, I found how to read RSSI value as below. According to nRF51822 RM, RSSISAMPLE would be 0~ 127. Actual RSSI is – (RSSISAMPLE) dBm. But, I found the value I read out seems like a 2’s complement byte. The value I read isen-USTelligent Community 13Fri, 30 May 2014 21:41:43 GMThttps://devzone.nordicsemi.com/thread/10453?ContentTypeID=1Fri, 30 May 2014 21:41:43 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b99409e9-ddca-4f5b-b2c4-4cc289382bc6Dan Danknick<p>It&#39;s a signed 8-bit integer because it must support negative dB values (which is what you&#39;ll usually see).</p> <p>Dan</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/10452?ContentTypeID=1Fri, 30 May 2014 11:05:27 GMT137ad170-7792-4731-bb38-c0d22fbe4515:407b450f-e46b-4e38-824b-701ef05c7767P&#229;l H&#229;land<p>Hi Jeffery,</p> <p>The RSSI value should be a int8_t <a href="https://devzone.nordicsemi.com/documentation/nrf51/5.2.0/html/a00228.html">devzone.nordicsemi.com/.../a00228.html</a></p> <p>BR, Pål</p><div style="clear:both;"></div>