AT组件 socket

AT socket组建怎么连接收发消息

发布于 2021-12-13 16:46:08 浏览：1223 订阅该版

Assert 2021-12-14

这家伙很懒，什么也没写！

crystal266 2021-12-14

嵌入式

Assert 2021-12-14

这家伙很懒，什么也没写！

crystal266 2021-12-14

嵌入式

Assert 2021-12-15

这家伙很懒，什么也没写！

@lzj 如果只是简单的网络连接，使用AT指令透传，不需要使用AT组件，自己写解析函数，EC200的透传网络连接参考如下:
```c
//AT测试指令
    for (i = 0; i < retry_num; i++)
    {
        if (gprs_send_cmd_wait_response((u8*) "AT", 2, TRUE, (u8*) "OK", 1000) == RETURN_OK)
        {
            ret = RETURN_OK;
            break;
        }
        if (i == 4)  //5次没正确响应尝试发送+++切换模式
        {
            rt_thread_mdelay(1000);
            gprs_send_cmd_wait_response((u8*) "+++", 3, FALSE, (u8*) "OK", 2000);
            rt_thread_mdelay(1000);
        }
    }
    if (i == retry_num)
    {
        ret = RETURN_ERR;
        return ret;
    }

//关闭回显
    gprs_send_cmd_wait_response((u8*) "ATE0", 4, TRUE, (u8*) "OK", 500);

//打印模组信息
    gprs_send_cmd_wait_response((u8*) "ATI", 3, TRUE, (u8*) "OK", 500);

//SIM卡检测
    for (i = 0; i < retry_num; i++)
    {
        if (gprs_send_cmd_wait_response((u8*) "AT+CPIN?", 8, TRUE, (u8*) "OK", 1000) == RETURN_OK)
        {
            ret = RETURN_OK;
            break;
        }
    }
    if (i == retry_num)
    {
        ret = RETURN_ERR;
        return ret;
    }

//查询信号强度
    for (i = 0; i < retry_num; i++)
    {
        if (gprs_send_cmd_wait_response((u8*) "AT+CSQ", 6, TRUE, (u8*) "OK", 1000) == RETURN_OK)
        {
            ret = RETURN_OK;
            break;
        }
    }
    if (i == retry_num)
    {
        ret = RETURN_ERR;
        return ret;
    }

//查询网络注册状态
    for (i = 0; i < retry_num; i++)
    {
        if (gprs_send_cmd_wait_response((u8*) "AT+CREG?", 8, TRUE, (u8*) "OK", 1000) == RETURN_OK)
        {
            ret = RETURN_OK;
            break;
        }
    }
    if (i == retry_num)
    {
        ret = RETURN_ERR;
        return ret;
    }

//查询GPRS附着状态
    for (i = 0; i < retry_num; i++)
    {
        if (gprs_send_cmd_wait_response((u8*) "AT+CGATT?", 9, TRUE, (u8*) "OK", 1000) == RETURN_OK)
        {
            ret = RETURN_OK;
            break;
        }
    }
    if (i == retry_num)
    {
        ret = RETURN_ERR;
        return ret;
    }

//关闭移动场景
    for (i = 0; i < retry_num; i++)
    {
        if (gprs_send_cmd_wait_response((u8*) "AT+QIDEACT=1", 12, TRUE, (u8*) "OK", 1000) == RETURN_OK)
        {
            ret = RETURN_OK;
            break;
        }
    }
    if (i == retry_num)
    {
        ret = RETURN_ERR;
        return ret;
    }

//APN场景配置  AT+QICSGP=1,1,"CMNET","","",1      "AT+QICSGP=1,1,\"CMNET\","","",1\r\n"
    gprs_send_cmd_wait_response((u8*) "AT+QICSGP=1", 11, TRUE, (u8*) "OK", 2000);

//激活移动场景
    for (i = 0; i < retry_num; i++)
    {
        if (gprs_send_cmd_wait_response((u8*) "AT+QIACT=1", 10, TRUE, (u8*) "OK", 2000) == RETURN_OK)
        {
            ret = RETURN_OK;
            break;
        }
    }
    if (i == retry_num)
    {
        ret = RETURN_ERR;
        return ret;
    }

//查询分配的IP地址
    gprs_send_cmd_wait_response((u8*) "AT+CGPADDR=1", 12, TRUE, (u8*) "OK", 2000);
    /////////////////////////////
    
    //"AT+QIOPEN=1,0,\"TCP\",\"112.125.89.8\",33381,0,2\r\n"
    //"AT+QIOPEN=1,0,"TCP","180.097.081.180",51246,0,2"
    //将ip字符数组转换为字符串ip_addr
    for (i = 0; i < 15; i++)
    {
        ip_addr[i] = ip[i];
    }
    ip_addr[i] = '\0';
    ///////////////////////////////////////////////////

send_len = rt_snprintf((char*) send_cmd, sizeof(send_cmd), "%s%s%c%d%s", "AT+QIOPEN=1,0,\"TCP\",", ip_addr, ',',
            port, ",0,2");
    if (send_len > 0)
    {
        rt_kprintf("%s\r\n", send_cmd);
        //建立TCP连接
        for (i = 0; i < retry_num; i++)
        {
            if (gprs_send_cmd_wait_response(send_cmd, send_len, TRUE, (u8*) "CONNECT", 2000) == RETURN_OK)
            {
                ret = RETURN_OK;
                break;
            }
        }
        if (i == retry_num)
        {
            ret = RETURN_ERR;
            return ret;
        }
        /////////////////////////////
    }
    ////////////////////////////////
```