NimBLEDevice::setPower(int dbm) not working as expected (NRF52840)

[lilindian16]

NRF52840-QIAA n-able core version = 1.0.0 NimBLE-Arduino version = 1.4.1

platformio.ini config: platform = https://github.com/h2zero/platform-n-able.git#1.0.0 framework = arduino lib_deps = h2zero/NimBLE-Arduino@^1.4.0 upload_protocol = jlink board = generic_nrf52840 debug_tool = jlink

Using NimBLEDevice::setPower(int dbm) seems to not change the tx power from what I can tell.

Iterating through the following dbm values shows no change using LightBlue to read RSSI: {RADIO_TXPOWER_TXPOWER_Neg4dBm, RADIO_TXPOWER_TXPOWER_0dBm, RADIO_TXPOWER_TXPOWER_Pos3dBm, RADIO_TXPOWER_TXPOWER_Pos4dBm} Reading RSSI on LightBlue app shows no change between all four settings

The workaround I have used so far is changing nimconfig MYNEWT_VAL_BLE_LL_TX_PWR_DBM=0 to MYNEWT_VAL_BLE_LL_TX_PWR_DBM=4 with platformio build flag build_flags = -DMYNEWT_VAL_BLE_LL_TX_PWR_DBM=4 Reading RSSI on LightBlue shows immediate change after device is flashed with new config

[h2zero]

Interesting, do you see any change if you use the numerical values instead of the macros, i.e -4 etc?

[j45p41]

NRF52840-QIAA n-able core version = 1.0.0 NimBLE-Arduino version = 1.4.1

platformio.ini config: platform = https://github.com/h2zero/platform-n-able.git#1.0.0 framework = arduino lib_deps = h2zero/NimBLE-Arduino@^1.4.0 upload_protocol = jlink board = generic_nrf52840 debug_tool = jlink

Using NimBLEDevice::setPower(int dbm) seems to not change the tx power from what I can tell.

Iterating through the following dbm values shows no change using LightBlue to read RSSI: {RADIO_TXPOWER_TXPOWER_Neg4dBm, RADIO_TXPOWER_TXPOWER_0dBm, RADIO_TXPOWER_TXPOWER_Pos3dBm, RADIO_TXPOWER_TXPOWER_Pos4dBm} Reading RSSI on LightBlue app shows no change between all four settings

The workaround I have used so far is changing nimconfig MYNEWT_VAL_BLE_LL_TX_PWR_DBM=0 to MYNEWT_VAL_BLE_LL_TX_PWR_DBM=4 with platformio build flag build_flags = -DMYNEWT_VAL_BLE_LL_TX_PWR_DBM=4 Reading RSSI on LightBlue shows immediate change after device is flashed with new config

hi @lilindian16 I used your suggestion and it increased power to 4dbm - did you ever get it to 8dbm? if so can you share pls?

[h2zero]

Fixed in #679