CC2640R2F: CC2640R2 RSSI

Hi Eli,

Do you want to get the magnitude of the number? If so you do a bitwise inversion and then add one.

Cheers,
Fredrik

In C code you don't need any conversion, as 2's complement is used for signed numbers. Just define your variable for holding the RSSI as a signed 8-bit number (int8_t, or signed char).

Where did you get the -97 number from?

Since the signed number is in reference to the sensitivity and in dB i think i had to add it to the SOC sensitivity which is -97 dbm.
So if i get a number representing 57 dB , i get -97 dBm + 57 dB = -40 dBm
And this is the input signal received in reference with the RSSI of 57dB.
Please check this.

The RSSI output from the radio is simply the input power level. If the number coming out of the radio is -57, then the input power is -57 dBm.