Is there a way to invert the DTR/RTS UART signal for esp32 upload?

PlatformIO IDE
1

I made a mistake when wiring a custom esp32 board I’m making. I used NPN transistors as a switching circuit between both DTR → GPIO0 and RTS->RESET.

But cp2102 dtr/rts outputs are active low. So by default, it’s high, which pulls my reset and gpio0 low, which activates them. Because of this I can’t upload to my board.

Is there a way to invert the cp2102 signal in software so that it’s default low instead of high, and then pulses high to send the signals to the gpio0 and reset pins?

2

Overlaps with https://github.com/espressif/esptool/issues/513. esptoolpy can accept options from a config file to set a custom reset sequence. You can enter your inverted sequence there.