I am made a project with ESP32-C3-MINI-1-H4 module in the past and it works great. I could program it directly from USB out of the box. But for a newer project I used ESP32-C3-MINI-1-N4 variant. As per the datasheet,
. However after making the PCB I can't program it directly from USB.The ESP32-C3FN4 chip and the ESP32-C3FH4 chip vary only in the ambient temperature
So I pull the GPIO 9 LOW to put it into boot mode and when I compare it with the previous board that I have I found, in the serial monitor my previous board (based on ESP32-C3FH4 chip) shows
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ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x15 (USB_UART_CHIP_RESET),boot:0x0 (USB_BOOT)
Saved PC:0x400462e2
wait usb download
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ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x15 (USB_UART_CHIP_RESET),boot:0x2 (UART0_BOOT)
Saved PC:0x400462e2
wait uart0 download
How can I change this boot mode to make the ESP32-C3-MINI-1-N4 module program over USB since I didn't break out the UART pins.
Please help!
Thanks