DP83848與STM32F4進行網絡通信原理圖源程序

ID:587294 · 發表于 2019-10-12 15:18

DP83848與STM32F4進行網絡通信電路原理圖如下：

單片機源程序如下:

/* Includes ------------------------------------------------------------------*/
#include "stm32f4x7_eth.h"
#include "netconf.h"
#include "main.h"
#include "lwip/tcp.h"
#include "serial_debug.h"
#include "udp_echoclient.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
#define SYSTEMTICK_PERIOD_MS 10
/*--------------- LCD Messages ---------------*/
//#if defined (STM32F40XX)
//#define MESSAGE1 " STM32F40/41x "
//#elif defined (STM32F427X)
//#define MESSAGE1 " STM32F427x "
//#endif
//#define MESSAGE2 " STM32F-4 Series "
//#define MESSAGE3 " UDP echoclient Demo"
//#define MESSAGE4 " "
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
__IO uint32_t LocalTime = 0; /* this variable is used to create a time reference incremented by 10ms */
uint32_t timingdelay;
/* Private function prototypes -----------------------------------------------*/
//void LCD_LED_BUTTON_Init(void);
/* Private functions ---------------------------------------------------------*/
/**
* @brief Main program.
* @param None
* @retval None
*/
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
*/
NVIC_PriorityGroupConfig(NVIC_PriorityGroup_4);
//#ifdef SERIAL_DEBUG
// DebugComPort_Init();
//#endif
// /*Initialize LCD and Leds */
// LCD_LED_BUTTON_Init();
/* Configure ethernet (GPIOs, clocks, MAC, DMA) */
ETH_BSP_Config();
/* Initilaize the LwIP stack */
LwIP_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);
udp_echoclient_connect();
}
}
/**
* @brief Inserts a delay time.
* @param nCount: number of 10ms periods to wait for.
* @retval None
*/
void Delay(uint32_t nCount)
{
/* Capture the current local time */
timingdelay = LocalTime + nCount;
/* wait until the desired delay finish */
while(timingdelay > LocalTime)
{
}
}
/**
* @brief Updates the system local time
* @param None
* @retval None
*/
void Time_Update(void)
{
LocalTime += SYSTEMTICK_PERIOD_MS;
}
///**
// * @brief Initializes STM324xG-EVAL's LCD, LEDs and push-buttons resources.
// * @param None
// * @retval None
// */
//void LCD_LED_BUTTON_Init(void)
//{
//#ifdef USE_LCD
// /* Initialize the STM324xG-EVAL's LCD */
// STM324xG_LCD_Init();
//#endif
// /* Initialize STM324xG-EVAL's LEDs */
// STM_EVAL_LEDInit(LED1);
// STM_EVAL_LEDInit(LED2);
// STM_EVAL_LEDInit(LED3);
// STM_EVAL_LEDInit(LED4);
// /* Leds on */
// STM_EVAL_LEDOn(LED1);
// STM_EVAL_LEDOn(LED2);
// STM_EVAL_LEDOn(LED3);
// STM_EVAL_LEDOn(LED4);
//#ifdef USE_LCD
// /* Clear the LCD */
// LCD_Clear(Black);
// /* Set the LCD Back Color */
// LCD_SetBackColor(Black);
// /* Set the LCD Text Color */
// LCD_SetTextColor(White);
// /* Display message on the LCD*/
// LCD_DisplayStringLine(Line0, (uint8_t*)MESSAGE1);
// LCD_DisplayStringLine(Line1, (uint8_t*)MESSAGE2);
// LCD_DisplayStringLine(Line2, (uint8_t*)MESSAGE3);
// LCD_DisplayStringLine(Line3, (uint8_t*)MESSAGE4);
//#endif
//
// STM_EVAL_PBInit(BUTTON_KEY, BUTTON_MODE_EXTI);
//}
//#ifdef USE_FULL_ASSERT
///**
// * @brief Reports the name of the source file and the source line number
// * where the assert_param error has occurred.
// * @param file: pointer to the source file name
// * @param line: assert_param error line source number
// * @retval None
// */
//void assert_failed(uint8_t* file, uint32_t line)
//{
// /* User can add his own implementation to report the file name and line number,
// ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
// /* Infinite loop */
// while (1)
// {}
//}
//#endif
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/