/设置接收回调函数/ rt_device_set_rx_indicate(serial, uart_input);/发送字符串/ rt_device_write(...
set_485_tx_rx_state(dev_485,1);//rt_thread_delay(2);if(UART_485_1_DEV_PTR == dev_485) { size = dev_485_1->write(dev_485_1,0, data, len); }elseif(UART_485_2_DEV_PTR == dev_485) { size = dev_485_2->write(dev_485_2,0, data, len); }elseif(UART_485_3_DEV_P...
rt_device_write的函数很简单的，断言，判断ref_count, 调用dev->write函数。代码如下所示：serial和can...