Measuring battery voltage on a adafruit feather esp32-s3 tft fails in circuitpython

[BeatArnet]

• IDE: Thonny (german)
• Device: adafruit esp32-s3 tft
• circuitpython from end of september 2022
• LipO WITH 2000mAh ist attached
• Using the code simpletest.py
• Libraries installed (including the latest versions of adafruit_lc709203f.pmy, adafruit_bus_device, adafruit_register)

Result:

LC709203F simple test Make sure LiPoly battery is plugged into the board! Zurückverfolgung (jüngste Aufforderung zuletzt): Datei "", Zeile 12, in Datei "/lib/adafruit_lc709203f.py", Zeile 132, in init Datei "/lib/adafruit_lc709203f.py", Zeile 136, in init_RSOC Datei "/lib/adafruit_lc709203f.py", Zeile 257, in _write_word OSError: [Errno 116] ETIMEDOUT

Measuring the distance with the VL53L4CX, air quality with the bme688 and luminance with the bh1750 on the same esp32 works fine. Detaching the sensors does not help.

[BeatArnet]

Meanwhile I have found an additional notice: The library adafruit_lc709203f reports, that there is no sensor at 0xb but I2C-Scan tells: I2C addresses found: ['0xb', '0x23', '0x29', '0x77']

[dhalbert]

The ESP32-S3 cannot use an LC709203F, because of an issue with its I2C implementation. The problem is specific to the S3.

https://github.com/adafruit/circuitpython/issues/6311 https://github.com/espressif/esp-idf/issues/8894#issuecomment-1125564756

This has been a very hard issue to diagnose. There is a problem deep in the ESP-IDF.

[BeatArnet]

@dhalbert Thanks for the answer. Therefore I have to find another solution with the ADC.

[dhalbert]

It works fine on the ESP32-S2, if you are willing to buy another board.

[vladak]

Unfortunately, this bug seems to be hitting ESP32 V2 (running CircuitPython 8.0.0-beta.4) as well: https://forums.adafruit.com/viewtopic.php?p=947702#p947702