Function esp_idf_svc::sys::uart_set_loop_back

source ยท 
pub unsafe extern "C" fn uart_set_loop_back(
    uart_num: u32,
    loop_back_en: bool,
) -> i32
Expand description

@brief Configure TX signal loop back to RX module, just for the test usage.

@param uart_num UART number @param loop_back_en Set ture to enable the loop back function, else set it false.

  • @return
    • ESP_OK on success
    • ESP_ERR_INVALID_ARG Parameter error
    • ESP_FAIL Driver not installed