stm32如何利用esp8266-01s上云，指令代码是什么？

要利用ESP8266-01S将STM32连接到云上，需要进行以下步骤：

1. 在STM32上配置串口通信，将STM32与ESP8266-01S连接起来。

2. 在ESP8266-01S上配置WiFi连接，将ESP8266-01S连接到互联网。

3. 在ESP8266-01S上配置MQTT协议，将ESP8266-01S连接到MQTT服务器。

4. 在STM32上编写代码，利用MQTT协议将数据上传到MQTT服务器。

以下是STM32代码示例，可以通过MQTT协议将温度数据上传到MQTT服务器：

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "MQTTClient.h"

#define ADDRESS     "tcp://mqtt.server.com:1883"
#define CLIENTID    "STM32_MQTT_Client"
#define TOPIC       "temperature"
#define QOS         1
#define TIMEOUT     10000L

int main(int argc, char* argv[])
{
    int temperature = 25;   // 温度数据

    Network network;
    MQTTClient client;
    MQTTClient_connectOptions conn_opts = MQTTClient_connectOptions_initializer;
    MQTTClient_message pubmsg = MQTTClient_message_initializer;
    MQTTClient_deliveryToken token;
    int rc = 0;

    NetworkInit(&network);
    MQTTClientInit(&client, &network, 10000, NULL, 0, NULL, 0);

    conn_opts.keepAliveInterval = 20;
    conn_opts.cleansession = 1;

    if ((rc = NetworkConnect(&network, ADDRESS, 1883)) != 0)
    {
        printf("Failed to connect to MQTT server, return code %d\n", rc);
        exit(-1);
    }

    if ((rc = MQTTClientConnect(&client, &conn_opts)) != MQTTCLIENT_SUCCESS)
    {
        printf("Failed to connect to MQTT server, return code %d\n", rc);
        exit(-1);
    }

    pubmsg.payload = (void *)&temperature;
    pubmsg.payloadlen = sizeof(temperature);
    pubmsg.qos = QOS;
    pubmsg.retained = 0;

    MQTTClient_publishMessage(client, TOPIC, &pubmsg, &token);
    rc = MQTTClient_waitForCompletion(client, token, TIMEOUT);

    MQTTClientDisconnect(client);
    NetworkDisconnect(&network);

    return 0;
}

以上代码仅供参考，实际应用中需要根据具体情况进行调整。