【BW16】和小安派的联动

[i=s] 本帖最后由 noonezero 于 2024-4-4 22:03 编辑 [/i]<br /> <br /> # 前言 #### 本次项目使用BW16作为受控端，接收MQTT指令，操作继电器实现控制电器的目的 #### 首先需要BW16烧录代码 #### 其次，安装MQTT客户端，我这里使用MQTTX #### 具体效果请看下方演示 # 代码 ```cpp #include <WiFi.h> #include <PubSubClient.h> #define GPIO_sw1 PA26 // 定义继电器引脚 #define GPIO_sw2 PA27 #define ON LOW // 开关对应电平高低 char ssid[] = "wh5"; // wifi账号 char pass[] = "noonezero"; // wifi密码 int status = WL_IDLE_STATUS; // wifi状态 char mqttServer[] = "test.mosquitto.org"; // 测试MQTT服务器 char clientId[] = "noonezeroamebaClient"; // 客户端ID char topic_sw1[] = "topic_sw1"; // 订阅开关主题 char topic_sw2[] = "topic_sw2"; WiFiClient wifiClient; // 实例化Wifi PubSubClient client(wifiClient); // 创建一个MQTT客户端 // 订阅主题收到消息回调 void callback(char* topic, byte* payload, unsigned int length) { // 用于和收到的命令进行对比 char cmd_on[] = "1"; char cmd_off[] = "0"; // 主题1操作 if (strcmp(topic, topic_sw1) == 0) { // 开关操作 if (memcmp((char*)payload, cmd_on, strlen(cmd_on)) == 0) { digitalWrite(GPIO_sw1, ON); } else if (memcmp((char*)payload, cmd_off, strlen(cmd_off)) == 0) { digitalWrite(GPIO_sw1, !ON); } } else if (strcmp(topic, topic_sw2) == 0) { if (memcmp((char*)payload, cmd_on, strlen(cmd_on)) == 0) { digitalWrite(GPIO_sw2, ON); } else if (memcmp((char*)payload, cmd_off, strlen(cmd_off)) == 0) { digitalWrite(GPIO_sw2, !ON); } } Serial.print("Message arrived ["); Serial.print(topic); Serial.print("] "); for (int i = 0; i < length; i++) { Serial.print((char)(payload[i])); } Serial.print(" -> sw1: "); Serial.print(digitalRead(GPIO_sw1)); Serial.print(" sw2: "); Serial.print(digitalRead(GPIO_sw2)); Serial.println(" Receive subscribe."); } void reconnect() { // 连接MQTT 订阅主题 while (!(client.connected())) { Serial.print("Attempting MQTT connection..."); // Attempt to connect if (client.connect(clientId)) { Serial.println("connected"); // Once connected, publish an announcement... // ... and resubscribe client.subscribe(topic_sw1); // 订阅主题 client.subscribe(topic_sw2); } 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() { Serial.begin(115200); // 初始化串口 pinMode(GPIO_sw1, OUTPUT); // 初始化引脚 digitalWrite(GPIO_sw1, !ON); pinMode(GPIO_sw2, OUTPUT); digitalWrite(GPIO_sw2, !ON); // 连接wifi while (status != WL_CONNECTED) { Serial.print("Attempting to connect to SSID: "); Serial.println(ssid); // Connect to WPA/WPA2 network. Change this line if using open or WEP network: status = WiFi.begin(ssid, pass); // wait 10 seconds for connection: delay(10000); } // 设置MQTT服务器url和端口 client.setServer(mqttServer, 1883); // 设置回调 client.setCallback(callback); // Allow the hardware to sort itself out delay(1500); } void loop() { if (!(client.connected())) { reconnect(); } client.loop(); } ``` # MQTT客户端安装 #### 建议搜索MQTTX，免费还好用 # 演示效果 #### SW1演示  #### SW2演示  # 使用安信可小安派实现 #### 之前使用小安派做了一个MQTT控制器 #### 这次使用那个小安派来控制BW16 <iframe src="https://player.bilibili.com/player.html?aid=1202710804&bvid=BV1cf421Z7za&cid=1493949045&p=1" scrolling="no" border="0" frameborder="no" framespacing="0" allowfullscreen="true"> </iframe>

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