ESP32 Forum

I have a ESP32-P4-Function-EV-Board that I have been using to test/configure two 8x8 lidar matrix sensors using the Arduino 2.x IDE. Everything from the P4 has been working smoothly. Today I decided to connect an BN0085 IMU unit to the P4 to check the sensor before I add to the project. The test file uploaded correctly but I received no output on the serial monitor. All setting are the same as the previous testing. The code uploads correctly but no output. I hit reset and none of the typical startup text was displayed. I then uploaded a very simple heartbeat sketch and still nothing. I have through my daily limit of ChatGPT questions, and it was no help. Would appreciate any suggestions/ideas. This is an expensive module and I really can't buy another. Thanks

Make sure you connect to the JTAG USB port.
Set USB mode to Hardware CDC.
Enable USB-CDC on boot

Make sure you connect to the JTAG USB port - connected
Set USB mode to Hardware CDC - already set
Enable USB-CDC on boot - already set

I verified that the IDE is operating correctly with an ESP32-S3. I can upload a simple sketch with one println statement that repeats. Again, with the ESP32-P4 the sketch will upload but nothing prints to the serial monitor. When I turn off the power switch on the board I do get the "brownout" statement in the serial monitor.