ESP32 programming circuit not going into program mode automatically with UMH3N
Posted: Thu Aug 12, 2021 5:56 pm
I recently had a prototype made that used a FT232RLSSOP and UMH3N for Usb to serial and programming.
The circuit looks like this:
I thought this would be enough to automatically program the ESP32 for the arduino IDE, but I'm probably missing something.
I get the following error:
I also have a reset button on the board which just connects EN to GND. When I press that button (a few times) when I see "Connecting........_____", the programming actually starts and works.
Any idea where I'm going wrong?
The circuit looks like this:
- shot2.PNG (22.63 KiB) Viewed 3285 times
- SHOT1.PNG (3.44 KiB) Viewed 3285 times
I get the following error:
Code: Select all
esptool.py v2.6
Serial port COM8
Connecting........_____....._____....._____....._____....._____....._____....._____
A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet headerAny idea where I'm going wrong?