ESP32C3 UART Have no Output
Posted: Wed Sep 21, 2022 4:38 am
by Dr. 水文学家
I designed two functions of type-c, When I switch to USB-CDC it can download normally, But When I switch to UART, it outputs nothing. what's wrong with my design?
- QQ截图20220921113210.jpg (24.07 KiB) Viewed 2080 times
Re: ESP32C3 UART Have no Output
Posted: Wed Sep 21, 2022 4:40 am
by Dr. 水文学家
Also, The auto download didn't work properly.[
- QQ截图20220921124019.jpg (20.96 KiB) Viewed 2078 times
Re: ESP32C3 UART Have no Output
Posted: Wed Sep 21, 2022 9:13 am
by ESP_LJH
From your schematic, you have switched UART0 two times.
Please be noted GPIO8 should be high, GPIO9 should be low, then UART download could work.
Please add 24 nH inductor at XTAL_P line.
It is suggested to read ESP32-C3 hardware design guideline to find a standard schematic of C3.
Re: ESP32C3 UART Have no Output
Posted: Wed Sep 21, 2022 2:25 pm
by Dr. 水文学家
