5 Lan8720发送数据中断，断言报错。

发布于 2022-04-24 18:19:50 浏览：963 订阅该版

3 个回答

你的名字 2022-04-24

这家伙很懒，什么也没写！

tcpclient_sample.c文件的tcpclient函数修改如下：
```
void tcpclient(int argc, char **argv)
{
    int ret;
    char *recv_data;
    struct hostent *host;
    int sock, bytes_received;
    struct sockaddr_in server_addr;
    const char *url;
    int port;
    int16_t send_count = 2;
    //uint8_t send_data_count = 0;

if (argc < 3)
    {
        rt_kprintf("Usage: tcpclient URL PORT\n");
        rt_kprintf("Like: tcpclient 192.168.12.44 5000\n");
        return ;
    }

#if 0
    for (send_data_count = 0; send_data_count < SEND_DATA_SIZE; send_data_count++)
    {
        send_data_buf[send_data_count] = send_data_count;

}
#endif

url = argv[1];
    port = strtoul(argv[2], 0, 10);

/* 通过函数入口参数url获得host地址（如果是域名，会做域名解析） */
    host = gethostbyname(url);

/* 分配用于存放接收数据的缓冲 */
    recv_data = rt_malloc(BUFSZ);
    if (recv_data == RT_NULL)
    {
        rt_kprintf("No memory\n");
        return;
    }

/* 创建一个socket，类型是SOCKET_STREAM，TCP类型 */
    if ((sock = socket(AF_INET, SOCK_STREAM, 0)) == -1)
    {
        /* 创建socket失败 */
        rt_kprintf("Socket error\n");

/* 释放接收缓冲 */
        rt_free(recv_data);
        return;
    }

/* 初始化预连接的服务端地址 */
    server_addr.sin_family = AF_INET;
    server_addr.sin_port = htons(port);
    server_addr.sin_addr = *((struct in_addr *)host->h_addr);
    rt_memset(&(server_addr.sin_zero), 0, sizeof(server_addr.sin_zero));

/* 连接到服务端 */
    if (connect(sock, (struct sockaddr *)&server_addr, sizeof(struct sockaddr)) == -1)
    {
        /* 连接失败 */
        rt_kprintf("Connect fail!\n");
        closesocket(sock);

/*释放接收缓冲 */
        rt_free(recv_data);
        return;
    }
    else
    {
        /* 连接成功 */
        rt_kprintf("Connect successful\n");
    }

//rt_thread_mdelay(1000);

phy_read_register();

#if 1
    while (1)
    {
        // 标志为1，说明STM32H750的数据准备好。
        if (spi_adc_flag == 1)
        {
            ret = send(sock, adc_data_buffer, ADC_DATA_SPI_SEND, 0);
            // 标志位缺省
            spi_adc_flag = 0;
            rt_kprintf("ret = %d tcp_send_count = %d\r\n", ret, ++tcp_send_count);
        }
        
        rt_thread_mdelay(10);
    }
#endif
}
```