M5Stack ESP32 BLE tx power level

Gero Nimo

Hey guys,
This is my first post in this forum. I used the search but could not find a solution for my problem.

I would like to read the tx power level of BLE beacons with my M5Stack ESP32.
I get the rssi value but I would like to know the transmission power. I do not mean the 1Byte "transmitted/measured power" that you should receive on 1m range. I mean the power level that determines how strongly the beacon sends its broadcast (what the max. range should be).

I would like to read whether the beacon is configurated to send only at e.g. max. range of 2m or maybe 15m.

I use Arduino and PlatformIO with int8_t BLEAdvertisedDevice::getTXPower ()
http://www.neilkolban.com/esp32/docs/cpp_utils/html/class_b_l_e_advertised_device.html#a8c62ba653ba4f6fb904b6bc195620511

And I always get txPower: 0. using haveTXPower() returns false. But my smartphone with the usuals apps displays without and problems the txPower value (e.g. -20dBm that would indicate the ble beacon has only few meters max. range)

Did anyone had success with a M5Stack to read those txPower values?
Is there any code snippet that REALLY WORKS? There are planty online but they show 0 txPower and false on haveTxPower.

greetings

edit: further infos from platformIO
PLATFORM: Espressif 32 > M5Stack Core ESP32
HARDWARE: ESP32 240MHz 320KB RAM (4MB Flash)
Libs: M5Stack 0.2.5

Gero Nimo

so guys, any news or comments on this topic?

would appreciate it

ajb2k3

Sorry my friend but their seams to be an issue with bluetooth on the esp32.