Function esp_idf_sys::uart_wait_tx_done

pub unsafe extern "C" fn uart_wait_tx_done(
    uart_num: uart_port_t, 
    ticks_to_wait: TickType_t
) -> esp_err_t

@brief Wait until UART TX FIFO is empty.

@param uart_num UART_NUM_0, UART_NUM_1 or UART_NUM_2 @param ticks_to_wait Timeout, count in RTOS ticks

@return - ESP_OK Success - ESP_FAIL Parameter error - ESP_ERR_TIMEOUT Timeout