Question

What are the valid values for txPower?

Answer

On EM2xx platform, valid PHY power range of the radio is -43 dBm to 3 dBm. Any integer power level that falls within this range will be rounded to the nearest supported setting.

Supported Settings: -43, -26, -20, -17, -14, -12, -11, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5

Note: txPower values 4 and 5 dBm are available only in boost mode (which will increase power consumption significantly, thus reducing battery life).

On EM35x platform, valid PHY power range of the radio is -43 dBm to 8 dBm. Any integer power level that falls within this range will be rounded down to nearest supported setting

Supported Settings: -43, -26, -20, -17, -14, -12, -11, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, 4, 5, 6, 7, 8

Note: txPower values 4 through 8 dBm are available only in boost mode (which will increase power consumption significantly, thus reducing battery life).

For information on valid txPower values in EFR32 devices, see What are the valid values for txPower in EFR32 devices?