单片机 STM32F407开发板DMF407电机开发板平台keil V5.31HSE 为8MHZHSI为16MHZ主函数int main(void) { HAL_Init(); /* 初始化HAL库 */ sys_stm32_clock_init(336, 8, 2, 7); /* 设置时钟,168Mhz */ delay_init(168); /* 延时初始化 */ usart_init(115200); /* 串口初始化为115200 */ usmart_dev.init(84); /* 初始化USMART */ led_init(); /* 初始化LED */ lcd_init(); /* 初始化LCD */ key_init(); /* 初始化按键 */ my_mem_init(SRAMIN); /* 初始化内部SRAM内存池 */ my_mem_init(SRAMCCM); /* 初始化内部SRAMCCM内存池 */ freertos_demo(); /* 创建lwIP的任务函数 */ }void freertos_demo(void) { /* start_task任务 */ xTaskCreate((TaskFunction_t )start_task, (const char * )start_task, (uint16_t )START_STK_SIZE, (void * )NULL, (UBaseType_t )START_TASK_PRIO, (TaskHandle_t * )StartTask_Handler); vTaskStartScheduler(); /* 开启任务调度 */ }void start_task(void *pvParameters) { pvParameters pvParameters; g_lwipdev.lwip_display_fn lwip_test_ui; lwip_test_ui(1); /* 加载后前部分UI */ while (lwip_comm_init() ! 0) { lcd_show_string(30, 110, 200, 16, 16, lwIP Init failed!!, RED); delay_ms(500); lcd_fill(30, 50, 200 30, 50 16, WHITE); lcd_show_string(30, 110, 200, 16, 16, Retrying... , RED); delay_ms(500); LED1_TOGGLE(); } while (!ethernet_read_phy(PHY_SR)) /* 检查MCU与PHY芯片是否通信成功 */ { printf(MCU与PHY芯片通信失败请检查电路或者源码\r\n); } while ((g_lwipdev.dhcpstatus ! 2)(g_lwipdev.dhcpstatus ! 0XFF)) /* 等待DHCP获取成功/超时溢出 */ { vTaskDelay(5); } taskENTER_CRITICAL(); /* 进入临界区 */ g_display_queue xQueueCreate(DISPLAYMSG_Q_NUM,200); /* 创建消息Message_Queue,队列项长度是200长度 */ /* 创建lwIP任务 */ xTaskCreate((TaskFunction_t )lwip_demo_task, (const char* )lwip_demo_task, (uint16_t )LWIP_DMEO_STK_SIZE, (void* )NULL, (UBaseType_t )LWIP_DMEO_TASK_PRIO, (TaskHandle_t* )LWIP_Task_Handler); /* key任务 */ xTaskCreate((TaskFunction_t )key_task, (const char * )key_task, (uint16_t )KEY_STK_SIZE, (void * )NULL, (UBaseType_t )KEY_TASK_PRIO, (TaskHandle_t * )KEYTask_Handler); /* LED测试任务 */ xTaskCreate((TaskFunction_t )led_task, (const char* )led_task, (uint16_t )LED_STK_SIZE, (void* )NULL, (UBaseType_t )LED_TASK_PRIO, (TaskHandle_t* )LEDTask_Handler); /* 显示任务 */ xTaskCreate((TaskFunction_t )display_task, (const char* )display_task, (uint16_t )DISPLAY_STK_SIZE, (void* )NULL, (UBaseType_t )DISPLAY_TASK_PRIO, (TaskHandle_t* )DISPLAYTask_Handler); vTaskDelete(StartTask_Handler); /* 删除开始任务 */ taskEXIT_CRITICAL(); /* 退出临界区 */ }void lwip_demo_task(void *pvParameters) { pvParameters pvParameters; lwip_demo(); /* lwip测试代码 */ while (1) { vTaskDelay(5); } }void lwip_demo(void) { BaseType_t lwip_err; char *tbuf; lwip_data_send(); /* 创建发送数据线程 */ memset(g_local_info, 0, sizeof(struct sockaddr_in)); /* 将服务器地址清空 */ g_local_info.sin_len sizeof(g_local_info); g_local_info.sin_family AF_INET; /* IPv4地址 */ g_local_info.sin_port htons(LWIP_DEMO_PORT); /* 设置端口号 */ g_local_info.sin_addr.s_addr htons(INADDR_ANY); /* 设置本地IP地址 */ g_sock_fd socket(AF_INET, SOCK_DGRAM, 0); /* 建立一个新的socket连接 */ tbuf mymalloc(SRAMIN, 200); /* 申请内存 */ sprintf((char *)tbuf, Port:%d, LWIP_DEMO_PORT); /* 客户端端口号 */ lcd_show_string(5, 150, 200, 16, 16, tbuf, BLUE); /* 建立绑定 */ bind(g_sock_fd, (struct sockaddr *)g_local_info, sizeof(struct sockaddr_in)); while (1) { memset(g_lwip_demo_recvbuf, 0, sizeof(g_lwip_demo_recvbuf)); recv(g_sock_fd, (void *)g_lwip_demo_recvbuf, sizeof(g_lwip_demo_recvbuf), 0); lwip_err xQueueSend(g_display_queue,g_lwip_demo_recvbuf,0); if (lwip_err errQUEUE_FULL) { printf(队列Key_Queue已满数据发送失败!\r\n); } } }测试结果二、广播实验主函数int main(void) { HAL_Init(); /* 初始化HAL库 */ sys_stm32_clock_init(336, 8, 2, 7); /* 设置时钟,168Mhz */ delay_init(168); /* 延时初始化 */ usart_init(115200); /* 串口初始化为115200 */ usmart_dev.init(84); /* 初始化USMART */ led_init(); /* 初始化LED */ lcd_init(); /* 初始化LCD */ key_init(); /* 初始化按键 */ my_mem_init(SRAMIN); /* 初始化内部SRAM内存池 */ my_mem_init(SRAMCCM); /* 初始化内部SRAMCCM内存池 */ freertos_demo(); /* 创建lwIP的任务函数 */ }demovoid freertos_demo(void) { /* start_task任务 */ xTaskCreate((TaskFunction_t )start_task, (const char * )start_task, (uint16_t )START_STK_SIZE, (void * )NULL, (UBaseType_t )START_TASK_PRIO, (TaskHandle_t * )StartTask_Handler); vTaskStartScheduler(); /* 开启任务调度 */ }void start_task(void *pvParameters) { pvParameters pvParameters; g_lwipdev.lwip_display_fn lwip_test_ui; lwip_test_ui(1); /* 加载后前部分UI */ while (lwip_comm_init() ! 0) { lcd_show_string(30, 110, 200, 16, 16, lwIP Init failed!!, RED); delay_ms(500); lcd_fill(30, 50, 200 30, 50 16, WHITE); lcd_show_string(30, 110, 200, 16, 16, Retrying... , RED); delay_ms(500); LED1_TOGGLE(); } while (!ethernet_read_phy(PHY_SR)) /* 检查MCU与PHY芯片是否通信成功 */ { printf(MCU与PHY芯片通信失败请检查电路或者源码\r\n); } while ((g_lwipdev.dhcpstatus ! 2) (g_lwipdev.dhcpstatus ! 0XFF)) /* 等待DHCP获取成功/超时溢出 */ { vTaskDelay(5); } taskENTER_CRITICAL(); /* 进入临界区 */ /* 创建lwIP任务 */ xTaskCreate((TaskFunction_t )lwip_demo_task, (const char* )lwip_demo_task, (uint16_t )LWIP_DMEO_STK_SIZE, (void* )NULL, (UBaseType_t )LWIP_DMEO_TASK_PRIO, (TaskHandle_t* )LWIP_Task_Handler); /* LED测试任务 */ xTaskCreate((TaskFunction_t )led_task, (const char* )led_task, (uint16_t )LED_STK_SIZE, (void* )NULL, (UBaseType_t )LED_TASK_PRIO, (TaskHandle_t* )LEDTask_Handler); vTaskDelete(StartTask_Handler); /* 删除开始任务 */ taskEXIT_CRITICAL(); /* 退出临界区 */ }void lwip_demo_task(void *pvParameters) { pvParameters pvParameters; lwip_demo(); /* lwip测试代码 */ while (1) { vTaskDelay(5); } }/* UDP广播测试 */ void lwip_demo(void) { struct link_socjet_info *socket_info; socket_info mem_malloc(sizeof(struct link_socjet_info)); socket_info-optval 1; /* 创建socket UDP通信 */ socket_info-sfd socket(AF_INET, SOCK_DGRAM, 0); setsockopt(socket_info-sfd, SOL_SOCKET, SO_BROADCAST, socket_info-optval, sizeof(socket_info-optval)); socket_info-client_addr.sin_family AF_INET; socket_info-client_addr.sin_port htons(9090); socket_info-client_addr.sin_addr.s_addr inet_addr(255.255.255.255); socket_info-client_addr_len sizeof(struct sockaddr_in); /* 设置接收和发送缓冲区 */ socket_info-recv.buf g_lwip_demo_recvbuf; socket_info-recv.size sizeof(g_lwip_demo_recvbuf); socket_info-send.buf g_lwip_demo_sendbuf; socket_info-send.size sizeof(g_lwip_demo_sendbuf); sys_thread_new(lwip_send_thread, lwip_recv_thread, (void *)socket_info, 512, LWIP_SEND_THREAD_PRIO ); while (1) { /* 发送广播数据 */ sendto(socket_info-sfd, socket_info-send.buf, socket_info-send.size, 0, (struct sockaddr *)socket_info-client_addr, socket_info-client_addr_len); vTaskDelay(1000); } }测试结果void freertos_demo(void) { /* start_task任务 */ xTaskCreate((TaskFunction_t )start_task, (const char * )start_task, (uint16_t )START_STK_SIZE, (void * )NULL, (UBaseType_t )START_TASK_PRIO, (TaskHandle_t * )StartTask_Handler); vTaskStartScheduler(); /* 开启任务调度 */ }三、组播实验int main(void) { HAL_Init(); /* 初始化HAL库 */ sys_stm32_clock_init(336, 8, 2, 7); /* 设置时钟,168Mhz */ delay_init(168); /* 延时初始化 */ usart_init(115200); /* 串口初始化为115200 */ usmart_dev.init(84); /* 初始化USMART */ led_init(); /* 初始化LED */ lcd_init(); /* 初始化LCD */ key_init(); /* 初始化按键 */ my_mem_init(SRAMIN); /* 初始化内部SRAM内存池 */ my_mem_init(SRAMCCM); /* 初始化内部SRAMCCM内存池 */ freertos_demo(); /* 创建lwIP的任务函数 */ }void start_task(void *pvParameters) { pvParameters pvParameters; g_lwipdev.lwip_display_fn lwip_test_ui; lwip_test_ui(1); /* 加载后前部分UI */ while (lwip_comm_init() ! 0) { lcd_show_string(30, 110, 200, 16, 16, lwIP Init failed!!, RED); delay_ms(500); lcd_fill(30, 50, 200 30, 50 16, WHITE); lcd_show_string(30, 110, 200, 16, 16, Retrying... , RED); delay_ms(500); LED1_TOGGLE(); } while (!ethernet_read_phy(PHY_SR)) /* 检查MCU与PHY芯片是否通信成功 */ { printf(MCU与PHY芯片通信失败请检查电路或者源码\r\n); } while ((g_lwipdev.dhcpstatus ! 2) (g_lwipdev.dhcpstatus ! 0XFF)) /* 等待DHCP获取成功/超时溢出 */ { vTaskDelay(5); } taskENTER_CRITICAL(); /* 进入临界区 */ /* 创建lwIP任务 */ xTaskCreate((TaskFunction_t )lwip_demo_task, (const char* )lwip_demo_task, (uint16_t )LWIP_DMEO_STK_SIZE, (void* )NULL, (UBaseType_t )LWIP_DMEO_TASK_PRIO, (TaskHandle_t* )LWIP_Task_Handler); /* LED测试任务 */ xTaskCreate((TaskFunction_t )led_task, (const char* )led_task, (uint16_t )LED_STK_SIZE, (void* )NULL, (UBaseType_t )LED_TASK_PRIO, (TaskHandle_t* )LEDTask_Handler); vTaskDelete(StartTask_Handler); /* 删除开始任务 */ taskEXIT_CRITICAL(); /* 退出临界区 */ }void lwip_demo_task(void *pvParameters) { pvParameters pvParameters; lwip_demo(); /* lwip测试代码 */ while (1) { vTaskDelay(5); } }void lwip_demo(void) { struct link_socjet_info *socket_info; struct ip_mreq_t *mreq_info; socket_info mem_malloc(sizeof(struct link_socjet_info)); mreq_info mem_malloc(sizeof(struct ip_mreq_t)); socket_info-sfd socket(AF_INET, SOCK_DGRAM, 0); if (socket_info-sfd 0) { printf(socket failed!\n); } socket_info-client_addr.sin_family AF_INET; socket_info-client_addr.sin_addr.s_addr htonl(INADDR_ANY); /* 待与 socket 绑定的本地网络接口 IP */ socket_info-client_addr.sin_port htons(9999); /* 待与 socket 绑定的本地端口号 */ socket_info-client_addr_len sizeof(socket_info-client_addr); /* 设置接收和发送缓冲区 */ socket_info-recv.buf g_lwip_demo_recvbuf; socket_info-recv.size sizeof(g_lwip_demo_recvbuf); socket_info-send.buf g_lwip_demo_sendbuf; socket_info-send.size sizeof(g_lwip_demo_sendbuf); /* 将 Socket 与本地某网络接口绑定 */ int ret bind(socket_info-sfd, (struct sockaddr*)socket_info-client_addr, socket_info-client_addr_len); if (ret 0) { printf( bind error!\n ); } mreq_info-mreq.imr_multiaddr.s_addr inet_addr(GROUP_IP); /* 多播组 IP 地址设置 */ mreq_info-mreq.imr_interface.s_addr htonl(INADDR_ANY); /* 待加入多播组的 IP 地址 */ mreq_info-mreq_len sizeof(struct ip_mreq); /* 添加多播组成员该语句之前socket 只与 某单播IP地址相关联 执行该语句后 将与多播地址相关联 */ ret setsockopt(socket_info-sfd,IPPROTO_IP,IP_ADD_MEMBERSHIP,mreq_info-mreq,mreq_info-mreq_len); if (ret 0) { printf(setsockopt failed !); } else { printf(setsockopt success\n); } int length 0; struct sockaddr_in sender; int sender_len sizeof(sender); sys_thread_new(lwip_send_thread, lwip_send_thread, (void *)socket_info, 512, LWIP_SEND_THREAD_PRIO ); while(1) { length recvfrom(socket_info-sfd,socket_info-recv.buf,socket_info-recv.size,0,(struct sockaddr*)sender,(socklen_t *)sender_len); socket_info-recv.buf[length]\0; printf(%s %d : %s\n, inet_ntoa(sender.sin_addr), ntohs(sender.sin_port), socket_info-recv.buf); vTaskDelay(10); } }测试结果