USB-JTAG AT Command FW

GiulioDallaVecchia
Posts: 5
Joined: Mon Mar 07, 2022 8:01 am

USB-JTAG AT Command FW

Postby GiulioDallaVecchia » Tue Mar 08, 2022 1:18 pm

Hi espressif community,

I'm using esp32-C3-mini1. I flashed the official AT command firmware to the module, but after that I can't re-flash any other firmware using USB-JTAG build-in. When I try to connect with openocd I always receive an error.

I've already tried to do that with the "hello world" project and I don't receive any error when I try to connect the board with openocd after flashed the code. It seems that the AT command firmware reconfigure the GPIO that are used for USB-JTAG connection. Is it possibile?

Thanks a lot in andvance.

Giulio

ESP_Sprite
Posts: 9764
Joined: Thu Nov 26, 2015 4:08 am

Re: USB-JTAG AT Command FW

Postby ESP_Sprite » Wed Mar 09, 2022 2:21 am

Yes, I seme to recall it does that. A fix would be to pull GPIO9 low and reset the chip - that resets it into download mode, allowing you to send a new app.

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