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kecajtop / dtr0xx_io

MIT License
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Problem with Esphome firmware upload #3

Closed pacitzu closed 11 months ago

pacitzu commented 11 months ago

Which programmer do you use to upload the Esphome firmware? CP210x USB to UART converter? Ch340g USB to UART converter? Esp-prog JTAG Downloader?

I'm using the "web.esphome.io" site and a "CP210x USB to UART" converter. The Dingtian board is the developer version. A serial connection with the card begins but the firmware upload does not start. A suggestion? Thanks

kecajtop commented 11 months ago

The ESP32 will enter the serial bootloader when GPIO0 is held low on reset. Otherwise it will run the program in flash.

kecajtop commented 11 months ago

Also ESP32 is 3.3V device.

kecajtop commented 11 months ago

But in my case I did use ch340 and ftdi chip. It should'n make any difference which usb conveter you will be using as long is working.

pacitzu commented 11 months ago

Thank you very much. I solved. the problem was that GPIO0 was not kept low upon reset