search

h2zero / NimBLE-Arduino

A fork of the NimBLE library structured for compilation with Arduino, for use with ESP32, nRF5x.
https://h2zero.github.io/NimBLE-Arduino/
Apache License 2.0
670 stars 138 forks source link

NimBLEDevice::setPower(int dbm) not working as expected (NRF52840) #599

Closed lilindian16 closed 5 days ago

lilindian16 commented 8 months ago

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 debugtool = 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 commented 8 months ago

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

j45p41 commented 4 months ago

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 debugtool = 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 commented 5 days ago

Fixed in #679