使用
STM32CubeIDE 1.17.0生成和编辑的STM32H743XIH6代码，使用了FreeRTOS+lwip，sockets实现的TCP客户端，对服务器端发送超过128个字节会卡死，进入硬件错误中断，参考的例子如下链接STM32H750+CubeIDE+FreeRTOS+ETH(LAN8720A)+LWIP_stm32h750 lan8720a-
请问这个例子是否正确？或者说有什么教程可以正确的参考吗
#include "tcpclient.h"#include "lwip/sockets.h"#include "ctype.h"#include "FreeRTOS.h"#include "task.h"#include "lwip/netdb.h"#include #include #include #include #include #include "lwip/opt.h"#include "lwip/sys.h"#include "lwip/api.h"#include "usb_device.h"//struct sockaddr_in serverAddr;int client_socket = -1;// 定义一个标志变量来控制重连次数int reconnect_attempts = 0;void myDelay(int ms) { vTaskDelay(pdMS_TO_
tiCKS(ms));}bool is_connected = false;bool isConnected() { return is_connected;}void tcp_client_init(void) { struct sockaddr_in serverAddr; int enable = 1; client_socket = socket(AF_INET, SOCK_STREAM, 0);//AF_INET:IPV4,SOCK_STREAM:协议类型为TCP if (client_socket < 0) { usb_printf("创建socket失败n"); return; } // 设置 socket 选项 setsockopt(client_socket, SOL_SOCKET, SO_REUSEADDR, &enable, sizeof(enable));//允许本地地址重用 // 设置读取超时 struct timeval timeout; timeout.tv_sec = 5; // 5秒超时 timeout.tv_usec = 0; setsockopt(client_socket, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout)); //连接的服务器 serverAddr.sin_family = AF_INET; serverAddr.sin_port = htons(TCP_CLIENT_PORT); serverAddr.sin_addr.s_addr = inet_addr(SERVER_IP); int ret = connect(client_socket, (struct sockaddr*)&serverAddr, sizeof(serverAddr)); // 连接到服务器 if (ret < 0) { usb_printf("连接服务器失败n"); lwip_close(client_socket); client_socket = -1; is_connected = false; } else { usb_printf("TCP 连接成功n"); is_connected = true; reconnect_attempts = 0; // 重置重连次数 }}// 读取数据void tcp_read_data(void) { char buffer[1024]; ssize_t bytes_read; // 读取数据 bytes_read = lwip_recv(client_socket, buffer, sizeof(buffer) - 1, 0); if (bytes_read > 0) { buffer[bytes_read] = '�'; usb_printf("读取的数据: %sn", buffer); } else if (bytes_read == 0) { usb_printf("服务器关闭连接n"); lwip_close(client_socket); client_socket = -1; is_connected = false; } else { if (errno == EAGAIN || errno == EWOULDBLOCK) { usb_printf("读取超时n"); } else { usb_printf("数据读取失败: %dn", errno); lwip_close(client_socket); client_socket = -1; is_connected = false; } }}// 发送数据void tcp_send_data(const char *data) { if (is_connected) { ssize_t bytes_sent =lwip_send(client_socket, data, strlen(data), 0); if (bytes_sent < 0) { usb_printf("数据发送失败: %dn", errno); lwip_close(client_socket);//断开连接 client_socket = -1; is_connected = false; } else { // usb_printf("发送数据: %sn", data); } } else { usb_printf("未连接，无法发送数据n"); }}
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