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我不是一個編碼器，所以我問你們，如果你知道我怎麼能解決我的問題。 在arduino中，我用DS18B20傳感器編寫了第一個程序，該程序通過MQTT網絡程序在openHAB中顯示溫度。 第二個程序是同樣的東西（openhab，mqtt）只是開關燈，這意味着當我按下開關時，燈或LED通過Arduino中的回調函數打開或關閉。 另外這兩個程序工作得很好，但是當我試圖將它們連接在一起時，它不起作用，因爲我想。在我看來，問題在於循環功能。當我按下開關ON或OFF時，有時（很少）我可以打開或關閉指示燈。所以我的問題是...什麼是錯的？循環是否有問題，因爲arduino不能同時在循環中處理兩件事情？它可以解決，我真的不知道下一步該怎麼做。請幫助我，並提前致謝！arduino循環不能使用兩個進程
#include <OneWire.h>
#include <DallasTemperature.h>
#include <SPI.h>
#include <PubSubClient.h>
#include "WiFiEsp.h"
// Emulate Serial1 on pins 3/2 if not present
#ifndef HAVE_HWSERIAL1
#include "SoftwareSerial.h"
SoftwareSerial Serial1(3, 2); // RX, TX
#endif
char ssid[] = "SSID; // your network SSID (name)
char pwd[] = "password"; // your network password
float temp = 0;
byte server[] = { 192, 168, 1, 71 }; // IP Address of your MQTT Server
WiFiEspClient espClient;
PubSubClient client(espClient);
#define ONE_WIRE_BUS 4
// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
OneWire oneWire(ONE_WIRE_BUS);
// Pass our oneWire reference to Dallas Temperature.
DallasTemperature sensors(&oneWire);
void callback(char* topic, byte* payload, unsigned int length) {
Serial.println("Callback");
Serial.println(topic);
Serial.println(length);
Serial.write(payload,length);
Serial.println();
if (strcmp(topic,"home/luc")==0) {
if (payload[0] == '0')
{
digitalWrite(7, LOW);
delay(100);
client.publish("home/luc/state","OFF");
}
else if (payload[0] == '1')
{
digitalWrite(7, HIGH);
delay(100);
client.publish("home/luc/state","ON");
}
}
}
void temperaturni_senzor()
{
sensors.requestTemperatures();
temp = sensors.getTempCByIndex(0);
Serial.print("Temperatura je: ");
Serial.println(temp); // Why "byIndex"? You can have more than one IC on the same bus. 0 refers to the first IC on the wire
//Update value every 1 sec.
client.publish("home/temperature", String(temp).c_str(),TRUE);
delay(50);
}
void reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
Serial.print("connecting to mqtt...");
// Attempt to connect
if (client.connect("ESP8266 client")) {
Serial.println("connection good");
// ... and subscribe to topic
client.subscribe("home/luc");
} 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()
{
Serial1.begin(9600);
Serial.begin(9600); //Begin serial communication
WiFi.init(&Serial1);
WiFi.begin(ssid, pwd);
client.setServer(server, 1883);
client.setCallback(callback);
if (client.connect("arduinoClient"))
{
Serial.println ("mqqt is connected");
client.publish("outTopic","hsubscribello world");
client.subscribe("home/luc"); // Subscribe to all messages for this device
client.subscribe("home/temperature");
}
pinMode(7, OUTPUT);
digitalWrite(7, LOW);
sensors.begin();
}
void loop()
{
client.loop();
if (!client.connected())
{
reconnect();
}
temperaturni_senzor();
}
}
編輯的問題，包括你的代碼，所以我們不必猜測 – hardillb
有沒有** **過程中的Arduino。 *你的意思是「arduino不能在同一時間在循環中處理兩件事情」*？ Arduino按照您指定的順序依次執行每個事件**。 –