Use ESP32 Board to Program Another EPS32

[Phisatho]

Hi,
I am about to buy a new ESP32 board which does not have CP2102 interface. I will have to buy a USB to TTL serial adaptor. My question is - Can I use an ESP32 board with the UART-USB pass-through example https://docs.micropython.org/en/latest/ ... rough.html instead of a serial adaptor to program the new board?

[jimmo]

I am about to buy a new ESP32 board which does not have CP2102 interface. I will have to buy a USB to TTL serial adaptor. My question is - Can I use an ESP32 board with the UART-USB pass-through example https://docs.micropython.org/en/latest/ ... rough.html instead of a serial adaptor to program the new board?

Potentially yes, but it will be much more convenient to get a USB/UART adaptor (e.g. FTDI), and just a handy thing to have in your electronics toolbox.

One thing the ESP32 boards with built-in CP2102 (or equivalent) do is use the RTS/CTS lines to toggle the bootloader. This will not be possible using an ESP32 as an adaptor.

[Phisatho]

I have a couple of adaptors in my drawer where I live. At the moment, I am in my home country.

So, to use ESP32 as the adaptor to flash micropython, will pressing the boot button before flashing do the job?

[jimmo]

So, to use ESP32 as the adaptor to flash micropython, will pressing the boot button before flashing do the job?

I haven't tried it, but yes I would imagine this should be possible.

[Phisatho]

Thanks. I will give it a try and report later.