Removing CP2104 from dev board causes crash in WiFi.begin()
Posted: Fri Jun 18, 2021 7:12 am
I have been banging my head on this for a few days now, and need some fresh perspective on this problem.
Basically, I am using a ESP32 D1 Mini dev board, and programming it using Arduino.
I removed the CP2104 UART module using a hot air gun to see how much power I can save without it.
After removing the module, I am able to program it using a FTDI programmer. I am also able to run some test codes on it, even ones involving ULP.
However, the moment I use WiFi.begin(), the board crashes. I have looked at the schematic for the board, and I can't figure out how removing the UART module will affect WiFi.
Any ideas? Thanks!
Basically, I am using a ESP32 D1 Mini dev board, and programming it using Arduino.
I removed the CP2104 UART module using a hot air gun to see how much power I can save without it.
After removing the module, I am able to program it using a FTDI programmer. I am also able to run some test codes on it, even ones involving ULP.
However, the moment I use WiFi.begin(), the board crashes. I have looked at the schematic for the board, and I can't figure out how removing the UART module will affect WiFi.
Any ideas? Thanks!