我遇到了我的家庭自动化项目的一些问题。我从aliexpress买了一个节点MCUU v3,我想控制我的百叶窗。与节点MCU复现的代理消息
这是我正在使用它的代码。我使用Arduino IDE将此代码推送到节点MCUU。
#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <SimpleTimer.h>
// MQTT Server
const char* ssid = "****";
const char* password = "****";
const char* mqtt_server = "****";
char message_buff[100];
int photoValue = 0;
int rainValue = 0;
int photo = A0;
int rain = D6;
int relayUp = D7;
int relayDown= D8;
long interval = 10000;
long previousMillis = 0;
WiFiClient espClient;
PubSubClient client(espClient);
void setup_wifi() {
delay(10);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED) {
delay(500);
}
}
void setup() {
pinMode(photo, INPUT);
pinMode(rain, INPUT);
pinMode(relayUp, OUTPUT);
pinMode(relayDown, OUTPUT);
digitalWrite(relayUp ,LOW);
digitalWrite(relayDown, LOW);
setup_wifi();
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
}
void reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
if (client.connect("ESP8266Client")) {
client.subscribe("home/relayBlinds");
} else {
delay(5000);
}
}
}
void loop() {
if (!client.connected()) {
// Connect (or reconnect) to mqtt broker on the openhab server
reconnect();
}
// Read Photo- and Rain-sensors
photoValue = analogRead(photo);
rainValue = analogRead(rain);
// publish Temperature reading every 10 seconds
unsigned long currentMillis = millis();
if (currentMillis - previousMillis > interval) {
previousMillis = currentMillis;
// publish Photo
String pubStringPhoto = String(photoValue);
pubStringPhoto.toCharArray(message_buff, pubStringPhoto.length()+1);
client.publish("home/photo", message_buff);
// publish Rain
String pubStringRain = String(rainValue);
pubStringRain.toCharArray(message_buff, pubStringRain.length()+1);
client.publish("home/rain", message_buff);
}
client.loop();
}
void callback(char* topic, byte* payload, unsigned int length) {
// MQTT inbound Messaging
int i = 0;
// create character buffer with ending null terminator (string)
for(i=0; i<length; i++) {
message_buff[i] = payload[i];
}
message_buff[i] = '\0';
String msgString = String(message_buff);
if (msgString == "BLINDSUP") {
digitalWrite(relayUp ,HIGH);
delay(5000);
digitalWrite(relayUp ,LOW);
} else if (msgString == "BLINDSDOWN") {
digitalWrite(relayDown ,HIGH);
delay(5000);
digitalWrite(relayDown ,LOW);
}
}
该计划是有一个树莓派与openHAB作为控制器。我已经使用了几个指南来设置mosquitto和openHAB,并且我总是得到相同的结果。
所以这就是发生了什么:nodeMCU连接到我的Wifi并发布雨和照片值。我可以在openHAB GUI中阅读它们,没有任何问题。
当我按下在openHAB激活按钮来发布BLINDSUP或BLINDSDOWN消息到达没有任何问题,我可以看到我mosquitto终端上的消息。现在是当意想不到的结果开始发生时。相同的消息被多次传递给我的节点MCU,而没有它出现在蚊子终端中。
我一直在试图找出为什么会这样的行为,我认为这是因为该行:
if (!client.connected()) {
是假的和nodeMCU重新连接并以某种方式得到了同样的信息。但它始终是第一条信息。如果我发送BLINDSUP然后BLINDSDOWN它将只注册BLINDSUP永远。
我真的没有想法如何解决这个问题,并会感谢任何帮助,谢谢。
URL到nodeMCU是否有帮助,无论如何:nodeMCU