Search found 104 matches
- Sat Aug 05, 2017 6:47 pm
- Forum: ESP32 boards
- Topic: boot.py not executed
- Replies: 5
- Views: 4245
Re: boot.py not executed
Solved: SDA inadvertently shared with safe boot mode --> I2C pull-ups put firmware into safe boot mode that bypasses boot.py. Changed safe boot mode to different pin.
- Wed Aug 02, 2017 11:23 pm
- Forum: ESP32 boards
- Topic: boot.py not executed
- Replies: 5
- Views: 4245
boot.py not executed
boot.py and main.py are not executed on power up (or reset) after connecting an external part to the I2C bus of a HighLetgo ESP32 development board. Connecting through USB works, and I can then run boot.py manually without errors. Other than this boot issue, I2C communication works. Does someone hav...
- Wed Aug 02, 2017 11:16 pm
- Forum: ESP32 boards
- Topic: I2C pins on NodeMCU-32S
- Replies: 7
- Views: 6971
- Mon Jul 31, 2017 1:18 am
- Forum: ESP32 boards
- Topic: I2C pins on NodeMCU-32S
- Replies: 7
- Views: 6971
I2C pins on NodeMCU-32S
Anybody knows the pin numbers of the I2C bus on the NodeMCU-32S (probably identical to Espressiv Dev Board, but not sure)?
I expected
SCL on GPIO22 and
SCK on GPIO21
but scan does not find any devices I2C connected to these pins. This does work with the WiPy 2.0 (pins are different).
I expected
SCL on GPIO22 and
SCK on GPIO21
but scan does not find any devices I2C connected to these pins. This does work with the WiPy 2.0 (pins are different).