hex value to rssi

[ponlakshmi]

In beacon example code the RSSI value is 0xc3 while converting to decimal it giving 195 and in comment line it is mentioned as dbm.when converting this 195dbm to milliwatts it giving some 17 digits value.Can anyone please give me conversion formula for this..Thanks in advance

[Petter Myhre]

It is a two's complement representation. 195-256 = -61 dBm.

[R2]

After reading this post and looking at the Nordic reference docs for RSSI, I discovered we had been using type uint8_t instead of the specified int8_t type in our project.
Changing the type to int8_t gave me sane RSSI values without performing two's complement.