Function esp_idf_sys::uart_set_rts

pub unsafe extern "C" fn uart_set_rts(
    uart_num: uart_port_t, 
    level: c_int
) -> esp_err_t

@brief Manually set the UART RTS pin level. @note UART must be configured with hardware flow control disabled.

@param uart_num UART_NUM_0, UART_NUM_1 or UART_NUM_2 @param level 1: RTS output low (active); 0: RTS output high (block)

@return - ESP_OK Success - ESP_FAIL Parameter error