However, it did not work, and only after hours of troublehsooting my PCB layout and code, did I find that this new USB feature is not supported by Windows 7/8!
There seems to be a driver provided by your company, but it does not work either:
https://docs.espressif.com/projects/esp ... _jtag.html
On Windows 7 the ESP32-C3 simply does not show up on any COM port, and only shows up as a JTAG device. The above driver was a real headache to install using command-prompt, and did not fix the issue either. I also tried Zadig (https://zadig.akeo.ie/) which did not fix it.
I confirmed my board works fine and programs on Windows 10 and Linux machines.
To confirm:
- all my system drivers and installed and working
- all my other MCUs (arduino, regular ESP32 with UART bridge) work fine and show up as COM port
- this board with XH-C3F will show up as COM port and work fine on Win10 or Linux. Broken on Windows 7 machine (and likely Windows 8)
- device manager shows no errors, when plugged in it does not show COM port, only JTAG