求高手帮我看看串口代码呀！！！！

熊丽萍

   实现很简单的串口通信，就是出不了结果！！！
   void USART_Configuration(void)

{

GPIO_InitTypeDef  GPIO_InitStructure;

USART_InitTypeDef USART_InitStructure;

RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOA|RCC_APB2Periph_GPIOD 

  |RCC_APB2Periph_USART1|RCC_APB2Periph_AFIO, ENABLE);

RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);

    /*USART1端口配置

 A9 TX 复用推挽输出 PA10 RX 浮空输入模式*/

GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_9 ;

GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOA, &GPIO_InitStructure); 

GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_10 ;

GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_IN_FLOATING;

GPIO_Init(GPIOA, &GPIO_InitStructure);

/*USART2端口配置

 D5 TX 复用推挽输出 PD6 RX 浮空输入模式*/

GPIO_PinRemapConfig(GPIO_Remap_USART2, ENABLE);

GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_5 ;

GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_AF_PP;

GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;

GPIO_Init(GPIOD, &GPIO_InitStructure); 

GPIO_InitStructure.GPIO_Pin   = GPIO_Pin_6 ;

GPIO_InitStructure.GPIO_Mode  = GPIO_Mode_IN_FLOATING;

GPIO_Init(GPIOD, &GPIO_InitStructure);

     

    /*--------------USART1 USART2配置-------------------*/

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(USART1, &USART_InitStructure);

USART_Init(USART2, &USART_InitStructure);

USART_Cmd(USART1, ENABLE);

USART_Cmd(USART2, ENABLE);

USART_ITConfig(USART1, USART_IT_RXNE, ENABLE);

USART_ITConfig(USART1, USART_IT_TXE, ENABLE);

}

中断部分：

   void USART1_IRQHandler(void)

{  

   u16 RX=0xff;

     

  if(USART_GetITStatus(USART1, USART_IT_TXE) != RESET)

  //接收到数据  //确认是否接收到数据

  //if((USART_GetITStatus(USART1, USART_IT_RXNE))!= RESET)

  {

   USART_ClearITPendingBit(USART1,   USART_IT_TXE);

  // USART_ClearITPendingBit(USART1,   USART_IT_RXNE);

  //RX=USART_ReceiveData(USART1);

  USART_SendData(USART1,RX) ;

   //将数据回送至超级终端

  // USART_SendData(USART1, USART_ReceiveData(USART1));

   //等待数据发送完毕

   while(USART_GetFlagStatus(USART1, USART_FLAG_TC) == RESET);

}

}

main函数：

int main(void)

{

 

  //extern uint16_t value;

  //USART_TypeDef*p= USART1;

  /* Setup STM32 system (clocks, Ethernet, GPIO, NVIC) and STM3210C-EVAL resources

  设置STM32系统(时钟,以太网,GPIO,NVIC)和STM3210C-EVAL资源 */

  System_Setup();       //这个函数就是完成上面的各种初始化，

  

 

             

  /* Initilaize the LwIP satck */

  //LwIP_Init();

//  value = ETH_ReadPHYRegister(0x00, PHY_BCR);

  

  /* Initilaize the HelloWorld module */

  /*服务器端初始化*/

 // HelloWorld_init();

  /* Initilaize the webserver module */

  /*网页服务初始化*/

 // httpd_init();

  /* Initialize the TFTP server */

  //tftpd_init();

/*串口初始化*/

 //USART_DeInit(p);

  /* Infinite loop */

  while (1)

  {    

/* Periodic tasks */

// System_Periodic_Handle();

USART_SendData(USART1,0xff) ;

  }

}

/////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

这就是  System_Setup 

void System_Setup(void)

{

  RCC_ClocksTypeDef RCC_Clocks;

  /* Setup STM32 clock, PLL and Flash configuration)设置STM32时钟,PLL和Flash配置 */

  SystemInit();

  /* Enable USART2 clock 使USART2时钟*/

  RCC_APB1PeriphClockCmd(RCC_APB1Periph_USART2, ENABLE);

  /* Enable ETHERNET clock  */

  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_ETH_MAC | RCC_AHBPeriph_ETH_MAC_Tx |

                        RCC_AHBPeriph_ETH_MAC_Rx, ENABLE);

  /* Enable GPIOs and ADC1 clocks */

  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB | RCC_APB2Periph_GPIOC |

                         RCC_APB2Periph_GPIOD | RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO |

RCC_APB2Periph_ADC1, ENABLE);

  

  /* NVIC configuration */

  NVIC_Configuration();  

  USART_Configuration();

  /* ADC configuration */

  ADC_Configuration();

  /* Configure the GPIO ports 配置*/

  GPIO_Configuration();

  /* Initialize the STM3210C-EVAL's LCD */

  //STM3210C_LCD_Init();

  GLCD_init();

  /* Initialize STM3210C-EVAL's LEDs */

  STM_EVAL_LEDInit(LED1);

  STM_EVAL_LEDInit(LED2);

  STM_EVAL_LEDInit(LED3);

  STM_EVAL_LEDInit(LED4);

  /* Turn on leds available on STM3210X-EVAL */

  STM_EVAL_LEDOn(LED1);

  STM_EVAL_LEDOn(LED2);

  STM_EVAL_LEDOn(LED3);

  STM_EVAL_LEDOn(LED4);

  /* Clear the LCD */

  GLCD_clear(White);

  /* Set the LCD Back Color */

  GLCD_setBackColor(White);

  /* Set the LCD Text Color */

  GLCD_setTextColor(Blue);

  /* Display message on the LCD*/

  GLCD_displayStringLn(Line0, MESSAGE1);

  GLCD_displayStringLn(Line1, MESSAGE2);

  GLCD_displayStringLn(Line2, MESSAGE3);

  GLCD_displayStringLn(Line3, MESSAGE4);

  /* Configure the Ethernet peripheral */

  Ethernet_Configuration();

  /* SystTick configuration: an interrupt every 10ms */

  RCC_GetClocksFreq(&RCC_Clocks);

  SysTick_Config(RCC_Clocks.SYSCLK_Frequency / 100);

  /* Update the SysTick IRQ priority should be higher than the Ethernet IRQ */

  /* The Localtime should be updated during the Ethernet packets processing */

  NVIC_SetPriority (SysTick_IRQn, 1);  

  

  /* Configure the Key button */ 

  STM_EVAL_PBInit(Button_KEY, Mode_GPIO);

}

熊丽萍

回复【楼主位】熊丽萍:
---------------------------------
对了，上面带颜色的部分是被注释掉的，刚接触STM32，有好心人请指教一下。

正点原子

建议你先看看别人的代码。

熊丽萍

回复【3楼】正点原子:
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也是，学艺不精！！！谢谢原子哥！

熊丽萍

回复【3楼】正点原子:
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原子哥。。。弄了半天还是没找到错误的地方，我觉得没错呀，这是为什么呢！！！！

liming1111114

我也想问一样的问题啊。。。