点灯科技怎么连接esp8266（esp8266l298n控制电机连接天猫精灵）

arudino源码如下：

#include <ESP8266WiFi.h>//默认，加载WIFI头文件

#include "PubSubClient.h"//默认，加载MQTT库文件，mqtt库可以在库管理器直接下载

const char* ssid = "fangguanju"; //修改，修改为你的路由的WIFI名字

const char* password = "xxzxccgt"; //修改为你的WIFI密码

const char* mqtt_server = "bemfa.com"; //默认，MQTT服务器地址

const int mqtt_server_port = 9501; //默认，MQTT服务器端口

#define ID_MQTT "xxxxxxxx" //mqtt客户端ID，修改为你的开发者密钥

const char * dhttopic = "led002"; //主题名字，可在巴法云mqtt控制台创建，尾号002为灯

int B_led = LED_BUILTIN; //控制的led引脚

long timeval = 3 * 1000; //上传的传感器时间间隔，默认3秒

int ENV_D7 = D7 ; // L298N ENV gpio

int M_D1 = D1; // L298N_IN1 ESP_D1

int M_D2 = D2; // L298N_IN2 ESP_D2

String ledstatus = "off";//led状态默认off

long lastMsg = 0;//时间戳

//SimpleDHT11 dht11(pinDHT11);//dht11初始化

WiFiClient espClient;

PubSubClient client(espClient);//mqtt初始化

//灯光函数及引脚定义

void turnOnLed();

void turnOffLed();

void setup_wifi() {

delay(10);

Serial.println();

Serial.print("Connecting to ");

Serial.println(ssid);

WiFi.begin(ssid, password);

while (WiFi.status() != WL_CONNECTED) {

delay(500);

Serial.print(".");

}

Serial.println("");

Serial.println("WiFi connected");

Serial.println("IP address: ");

Serial.println(WiFi.localIP());

// 设置gpio 为输出模式

pinMode(ENV_D7,OUTPUT);

pinMode(M_D1, OUTPUT);

pinMode(M_D2, OUTPUT);

// 初始化引脚为低电平

digitalWrite(ENV_D7, LOW);

digitalWrite(M_D1, LOW);

digitalWrite(M_D2, LOW);

}

void turnup()

{

analogWrite(ENV_D7, 100);

digitalWrite(M_D1, HIGH);

digitalWrite(M_D2, LOW);

ledstatus="on";

String msg = "#" ledstatus; //数据封装#温度#湿度#开关状态#

client.publish(dhttopic, msg.c_str());//数据上传

}

void turndown()

{

analogWrite(ENV_D7, 100);

digitalWrite(M_D1, LOW);

digitalWrite(M_D2, HIGH);

ledstatus="off";

String msg = "#" ledstatus; //数据封装#温度#湿度#开关状态#

client.publish(dhttopic, msg.c_str());//数据上传

}

void callback(char* topic, byte* payload, unsigned int length) {

Serial.print("Message arrived [");

Serial.print(topic);

Serial.print("] ");

String Mqtt_Buff = "";

for (int i = 0; i < length; i ) {

Mqtt_Buff = (char)payload[i];

}

Serial.print(Mqtt_Buff);

Serial.println();

// Switch on the LED if an 1 was received as first character

if (Mqtt_Buff == "on") {//如果接收字符on，亮灯

//turnOnLed();//开灯函数

turnup();

} else if (Mqtt_Buff == "off") {//如果接收字符off，亮灯

//turnOffLed();//关灯函数

turndown();

} else if (Mqtt_Buff == "up") {//如果接收字符off，亮灯

turnup();//关灯函数

}

else if (Mqtt_Buff == "down") {//如果接收字符off，亮灯

turndown();//关灯函数

}

else if (Mqtt_Buff == "on#off") {//如果接收字符off，亮灯

turnup();//关灯函数

}

else if (Mqtt_Buff == "off#on") {//如果接收字符off，亮灯

turndown();//关灯函数

}

Mqtt_Buff = "";

}

void reconnect() {

// Loop until we're reconnected

while (!client.connected()) {

Serial.print("Attempting MQTT connection...");

// Attempt to connect

if (client.connect(ID_MQTT)) {//连接mqtt

Serial.println("connected");

client.subscribe(dhttopic);//修改，修改为你的主题

} else {

Serial.print("failed, rc=");

Serial.print(client.state());

Serial.println(" try again in 5 seconds");

// Wait 5 seconds before retrying

delay(5000);

}

}

}

void setup() {

pinMode(B_led, OUTPUT);

Serial.begin(115200);

setup_wifi();

client.setServer(mqtt_server, mqtt_server_port);

client.setCallback(callback);

digitalWrite(B_led, HIGH);

}

void loop() {

if (!client.connected()) {//判断mqtt是否连接

reconnect();

}

client.loop();//mqtt客户端

long now = millis();//获取当前时间戳

if (now - lastMsg > timeval) {//如果达到3s，进行数据上传

lastMsg = now;

String msg = "#" ledstatus; //数据封装#温度#湿度#开关状态#

client.publish(dhttopic, msg.c_str());//数据上传

}

}

//打开灯泡

void turnOnLed() {

ledstatus = "on";

Serial.println("turn on light");

digitalWrite(B_led, LOW);

String msg = "#" ledstatus; //数据封装#温度#湿度#开关状态#

client.publish(dhttopic, msg.c_str());//数据上传

}

//关闭灯泡

void turnOffLed() {

ledstatus = "off";

Serial.println("turn off light");

digitalWrite(B_led, HIGH);

analogWrite(ENV_D7, 0);

digitalWrite(M_D1, LOW);

digitalWrite(M_D2, LOW);

String msg = "#" ledstatus; //数据封装#温度#湿度#开关状态#

client.publish(dhttopic, msg.c_str());//数据上传

}

//源码结束

巴法云登录后可以创建mqtt云，创建主题后可以和esp8266通讯，在天猫精灵app中可以关联巴法云，里面就会有你建立的主题了。

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