ESP32 Forum

I follow the following link:
https://docs.espressif.com/projects/esp ... the-device

For Automatic bootloader, I wonder the behavior of DTR/RTS will same as FT232(FTDI)?
I try to use the FT232 and also apply the transistor and RC delay circuit, but still can not get flash_download_tool works.
Which part should I need to check if use FT232 instead of CP2012?
The 2.12.36.4 is the version of FTDI driver I used in windows 10.

When I press boot and then RST, the console shows following:
ESP-ROM:esp32c3-api1-20210207
Build:Feb 7 2021
rst:0x1 (POWERON),boot:0x4 (DOWNLOAD(USB/UART0/1))
waiting for download

Is that means the C3 get into download mode just like the automatic bootloader do?

Hello @tommyliu0804

maybe this document helps? Check out section `Strapping Pins`.

https://www.espressif.com/sites/default ... eet_en.pdf

Thanks
Felix

When you use flash download tool, what is the error log? sync error? If yes, you could modify RC values to match to the correct sequence.

Hello

Where do you see this printout on the console?
How did you connect your ESP32-C3 to the computer? By UART0 interface?

I think you only see the ROM messages during the boot up. See also on the bottom of Table 4 in the datasheet.
https://www.espressif.com/sites/default ... eet_en.pdf

You can disable this printout by changing the eFuse field EFUSE_UART_PRINT_CONTROL. For this check the technical reference manual
https://www.espressif.com/sites/default ... ual_en.pdf

Best regards