RT-Thread-STM32F205RG RX問題RT-Thread问答社区

STM32F205RG RX問題

发布于 2014-04-03 18:21:07 浏览：1565 订阅该版

各位好
我使用STM32F205RG 寫UART 串口程式
tx 有信號輸出
當有rx信號輸入時,中斷没有發生,rx資料要如何讀取,請有什麼要修改(用uart6)

程式如下
```static void RCC_Configuration(void)
{
#ifdef RT_USING_UART1
	/* Enable USART1 and GPIOA clocks */
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART1, ENABLE);
#endif

#ifdef RT_USING_UART6
	/* Enable USART6 and GPIOC clocks */
	RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOC, ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_USART6, ENABLE);
#endif
}

static void GPIO_Configuration(void)
{
	GPIO_InitTypeDef GPIO_InitStruct;

#ifdef RT_USING_UART1
	GPIO_InitStruct.GPIO_Mode=GPIO_Mode_AF;
	GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;
	GPIO_InitStruct.GPIO_OType=GPIO_OType_PP;
	GPIO_InitStruct.GPIO_PuPd=GPIO_PuPd_UP;

GPIO_InitStruct.GPIO_Pin=GPIO_Pin_9|GPIO_Pin_10;
	GPIO_Init(GPIOA,&GPIO_InitStruct);

GPIO_PinAFConfig(GPIOA, GPIO_PinSource9, GPIO_AF_USART1);
	GPIO_PinAFConfig(GPIOA, GPIO_PinSource10, GPIO_AF_USART1);
#endif

#ifdef RT_USING_UART6
	GPIO_InitStruct.GPIO_Mode=GPIO_Mode_AF;
	GPIO_InitStruct.GPIO_Speed=GPIO_Speed_50MHz;
	GPIO_InitStruct.GPIO_OType=GPIO_OType_PP;
	GPIO_InitStruct.GPIO_PuPd=GPIO_PuPd_UP;

GPIO_InitStruct.GPIO_Pin=UART6_GPIO_TX|UART6_GPIO_RX;
	GPIO_Init(UART6_GPIO,&GPIO_InitStruct);

GPIO_PinAFConfig(UART6_GPIO, GPIO_PinSource6, GPIO_AF_USART6);
	GPIO_PinAFConfig(UART6_GPIO, GPIO_PinSource7, GPIO_AF_USART6);
#endif
}

static void NVIC_Configuration(void)
{
	NVIC_InitTypeDef NVIC_InitStructure;

#ifdef RT_USING_UART1
	/* Enable the USART1 Interrupt */
	NVIC_InitStructure.NVIC_IRQChannel = USART1_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);
#endif

#ifdef RT_USING_UART6
	/* Enable the USART1 Interrupt */
	NVIC_InitStructure.NVIC_IRQChannel = USART6_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_Init(&NVIC_InitStructure);
#endif
}

void rt_hw_usart_init()
{
	USART_InitTypeDef USART_InitStructure;

RCC_Configuration();

GPIO_Configuration();

NVIC_Configuration();

/* uart init */
#ifdef RT_USING_UART1
	USART_DeInit(USART1);
	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_Init(USART1, &USART_InitStructure);

/* 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);
	/* Enable USART1 */
	USART_Cmd(USART1, ENABLE);
	USART_ClearFlag(USART1,USART_FLAG_TXE);
#endif

/* uart init */
#ifdef RT_USING_UART6
	USART_DeInit(USART6);
	USART_InitStructure.USART_BaudRate            = 9600;
	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_Init(USART6, &USART_InitStructure);

/* register uart1 */
	rt_hw_serial_register(&uart6_device, "uart6",
		RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_INT_RX | RT_DEVICE_FLAG_STREAM,
		&uart6);
	/* enable interrupt */
	USART_ITConfig(USART6, USART_IT_RXNE, ENABLE);
	/* Enable USART6 */
	USART_Cmd(USART6, ENABLE);
	USART_ClearFlag(USART6,USART_FLAG_TXE);
#endif
}

#ifdef RT_USING_UART1
void USART1_IRQHandler()
{
    /* enter interrupt */
    rt_interrupt_enter();
    rt_hw_serial_isr(&uart1_device);
    /* leave interrupt */
    rt_interrupt_leave();
}
#endif

#ifdef RT_USING_UART6
void USART6_IRQHandler()
{
    /* enter interrupt */
    rt_interrupt_enter();
    rt_hw_serial_isr(&uart6_device);
    /* leave interrupt */
    rt_interrupt_leave();
}
#endif

void mian()
{
 rt_device_t device;
 rt_hw_usart_init();
 device = rt_device_find("uart6");
 delay_time = rt_tick_from_millisecond(2000);

TxBuffer1[0]=49;
 TxBuffer1[1]=50;
 TxBuffer1[2]=51;
 TxBuffer1[3]=52;
 TxBuffer1[4]=53;
 TxBuffer1[5]=54;
 TxBuffer1[6]=55;
 TxBuffer1[7]=56;
 TxBuffer1[8]=57;
  while(1)     
  {
      rt_device_write(device, 0, &TxBuffer1[0], sizeof(TxBuffer1));	
      rt_thread_delay(delay_time);	
   }
}```