RT-Thread STM32F4 串口打印乱码。。。

发布于 2015-01-14 16:28:57 浏览：6326 订阅该版

12 个回答

qq_哎 2015-01-14

这家伙很懒，什么也没写！

对比 STM32F10X的代码

```
USART_InitTypeDef USART_InitStructure;
	USART_ClockInitTypeDef USART_ClockInitStructure;

RCC_Configuration();

GPIO_Configuration();

NVIC_Configuration();

DMA_Configuration();

/* uart init */
#ifdef RT_USING_UART1
	USART_InitStructure.USART_BaudRate = 115200;
	USART_InitStructure.USART_WordLength = USART_WordLength_8b;
	USART_InitStructure.USART_StopBits = USART_StopBits_1;
	USART_InitStructure.USART_Parity = USART_Parity_No;
	USART_InitStructure.USART_HardwareFlowControl = USART_HardwareFlowControl_None;
	USART_InitStructure.USART_Mode = USART_Mode_Rx | USART_Mode_Tx;
	USART_ClockInitStructure.USART_Clock = USART_Clock_Disable;
	USART_ClockInitStructure.USART_CPOL = USART_CPOL_Low;
	USART_ClockInitStructure.USART_CPHA = USART_CPHA_2Edge;
	USART_ClockInitStructure.USART_LastBit = USART_LastBit_Disable;
	USART_Init(USART1, &USART_InitStructure);
	USART_ClockInit(USART1, &USART_ClockInitStructure);

/* register uart1 */
	rt_hw_serial_register(&uart1_device, "uart1",
		RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
		&uart1);

/* enable interrupt */
	USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);
```

发现少了USART_ClockInit(USART1, &USART_ClockInitStructure); ，但是加上之后依然不对，实在是找不到什么问题了。。。