A Radios

2060

if the value is larger than 127, subtract 256 (this is akin to treating the u8 as a s8)

B/G Radios

2050

• If the OFDM flag is set:

  • treat rssi as an s8 instead of u8 (if > 127 subtract 256)

  • if the 2050 radio RSSI adjustment flag is set, add 17, otherwise subtract 4
• if the OFDM flag is not set:

  • if the BFL_RSSI is set in BoardFlags

    • clamp rssi to a max value of 63, using it as an offset into the software NRSSILookupTable

    • Take the value from the software NRSSILookupTable, subtract it from 31, multiply the result by -131.

    • Divide that by 128 then subtract 67 from the result.
  • otherwise
    • subtract the value from 31, multiply the result by -149.
    • Divide that by 128 then subtract 68 from the result.
  • if the PHY is not a G PHY, return the value, otherwise add 20 if the RSSI adjustment flag is set.
  • depending on the LNA gain:
    • if it is 0, add 2
    • if it is 1, subtract 19
    • if it is 2, subtract 13
    • if it is 3, subtract 25
  • add 25

Others (only 2053 afaik)

• subtract 11 from the rssi value and multiply the result by 103.
• this is a value in Qx.6, so divide by 64 to get a good value
• if the 2053 radio RSSI adjustment flag is set subtract 109, otherwise subtract 83