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标题: STM32F407的UDP发送数据 [打印本页]

作者: yuyang911220 时间: 2015-3-27 23:17 标题: STM32F407的UDP发送数据

探究WaveShare的F407的板子好几天了，这两天一直止步于网卡模块的udp发包，因为截包工具总是收不到我代码里面发出去的数据包，我的要求是只发特定数据，不管收到的数据包

记录下整个测试过程，以便以后翻阅

使用开发板自带的例程，udp_echo_server的例子，在此基础上修改，main函数是

int main(void)
{
  /*!< At this stage the microcontroller clock setting is already configured to
   168 MHz, this is done through SystemInit() function which is called from
   startup file (startup_stm32f4xx.s) before to branch to application main.
   To reconfigure the default setting of SystemInit() function, refer to
   system_stm32f4xx.c file
   */
#ifdef SERIAL_DEBUG
  DebugComPort_Init();
#endif


  /*Initialize LCD and Leds */
  LCD_LED_Init();

  /* configure ethernet */
  ETH_BSP_Config();

  /* Initilaize the LwIP stack */
  LwIP_Init();

  /* UDP echoserver */
  udp_echoserver_init();


  /* Infinite loop */
  while (1)
  {

/* check if any packet received */
if (ETH_CheckFrameReceived())
{
   /* process received ethernet packet */
   LwIP_Pkt_Handle();
}
/* handle periodic timers for LwIP */
LwIP_Periodic_Handle(LocalTime);
  }
}

我发现串口不能用，可能是其初始化方式有些问题，我做了些修改
将DebugComPort_Init函数改成下面两个函数
  USART_Configuration();

USART_NVIC_Config();

串口1就可以正常使用了
void USART_Configuration(void)
{

  GPIO_InitTypeDef GPIO_InitStructure;
  USART_InitTypeDef USART_InitStructure;

  RCC_AHB1PeriphClockCmd(Open_USART_TX_GPIO_CLK,ENABLE);
  RCC_AHB1PeriphClockCmd(Open_USART_RX_GPIO_CLK,ENABLE);

  #ifdef
USART1_OPEN

RCC_APB2PeriphClockCmd(Open_USART_CLK,ENABLE);
  #else

RCC_APB1PeriphClockCmd(Open_USART_CLK,ENABLE);
  #endif

  GPIO_PinAFConfig(Open_USART_TX_GPIO_PORT, Open_USART_TX_SOURCE, Open_USART_TX_AF);
  GPIO_PinAFConfig(Open_USART_RX_GPIO_PORT, Open_USART_RX_SOURCE, Open_USART_RX_AF);

  /*
  *  Open_USART_TX -> PA9 , Open_USART_RX -PA10
  */
  GPIO_InitStructure.GPIO_Pin = Open_USART_TX_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AF;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_PP;

  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_UP;
  GPIO_Init(Open_USART_TX_GPIO_PORT, &GPIO_InitStructure);

  GPIO_InitStructure.GPIO_Pin = Open_USART_RX_PIN;
  GPIO_InitStructure.GPIO_OType = GPIO_OType_OD;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(Open_USART_RX_GPIO_PORT, &GPIO_InitStructure);

/*

USARTx configured as follow:
      - BaudRate = 115200 baud

- Word Length = 8 Bits
      - One Stop Bit
      - No parity
      - Hardware flow control disabled (RTS and CTS signals)
      - Receive and transmit
*/

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