rt_device_open(serial, RT_DEVICE_FLAG_INT_TX)串口打开失败

发布于 2019-02-23 16:03:53 浏览：3008 订阅该版

static void usart_slave_operation_thread_entry(void *parameter){	static rt_device_t serial;         //´®¿ÚÉè±¸¾ä±ú  struct serial_configure config=RT_SERIAL_CONFIG_DEFAULT;//ÏÈÉèÖÃÎªÄ¬ÈÏ²ÎÊýstruct serial_configure *config_p=&config;	serial = rt_device_find(WIRELESS_UART_NAME);//²éÕÒ´®¿ÚÉè±¸	if (!serial)	{			rt_kprintf("find %s failed! ", WIRELESS_UART_NAME);	}	result=rt_device_open(serial, RT_DEVICE_FLAG_INT_TX);//就这里串口打开失败，只要是发送的设置就打开失败，如<span style="background-color: rgb(248, 248, 248); color: rgb(153, 153, 153); font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", Courier, monospace; font-weight: 700; white-space: pre;">RT_DEVICE_FLAG_INT_TX、<span style="background-color: rgb(248, 248, 248); color: rgb(153, 153, 153); font-family: SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", Courier, monospace; font-weight: 700; white-space: pre;">RT_DEVICE_FLAG_DMA_TX	if(result!=RT_EOK)	{		rt_kprintf("open %s failed! ", WIRELESS_UART_NAME);	}	//ÅäÖÃ´®¿Ú²ÎÊý	config_p->baud_rate=BAUD_RATE_57600;	result= rt_device_control(serial, RT_DEVICE_CTRL_CONFIG, config_p);	if(result!=RT_EOK)	{		rt_kprintf("config %s failed! ", WIRELESS_UART_NAME);	}	rt_device_set_rx_indicate(serial, uart_slave_input);//ÉèÖÃ½ÓÊÕ»Øµ÷º¯Êý	rt_device_write( serial,0,&(rx_array_temp[0]),2 );	while(1)	{		rt_thread_mdelay(20);	}}int usart_slave_operation(void){	tid1 = rt_thread_create("usart_slave",													usart_slave_operation_thread_entry, RT_NULL,													USART_SLAVE_OPERATION_THREAD_STACK_SIZE,													USART_SLAVE_OPERATION_THREAD_PRIORITY, 													USART_SLAVE_OPERATION_THREAD_TIMESLICE);	if (tid1 != RT_NULL)    rt_thread_startup(tid1);	return 0;}