why does esp32-c3 use SDA 19 and SCL 18 works perfectly, but when I try to swap SDA 18 and SCL 19 data is lost

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vietnhatthai
Posts: 1
Joined: Wed Oct 25, 2023 3:04 am

why does esp32-c3 use SDA 19 and SCL 18 works perfectly, but when I try to swap SDA 18 and SCL 19 data is lost

Postby vietnhatthai » Wed Oct 25, 2023 3:09 am

why does esp32-c3 use SDA 19 and SCL 18 works perfectly, but when I try to swap SDA 18 and SCL 19 data is lost
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ESP_Minatel
Posts: 364
Joined: Mon Jan 04, 2021 2:06 pm

Re: why does esp32-c3 use SDA 19 and SCL 18 works perfectly, but when I try to swap SDA 18 and SCL 19 data is lost

Postby ESP_Minatel » Thu Oct 26, 2023 8:04 am

Hi,

GPIO18 and GPIO19 are used for the USB Serial and JTAG (D- and D+ signals). Are you using USB serial from the ESP32-C3 for flashing and logging?
Can you give more details about the board you are using?
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