我不是一个程序员，所以我问你们，如果你们知道我怎么能解决我的问题。 在arduino中，我用DS18B20传感器编写了第一个程序，它通过MQTT procotol在openHAB中显示温度。 第二个程序是同一件事（openhab，mqtt）只是开关灯，这意味着当我按下开关时，灯或LED在Arduino的回调功能上打开或关闭。 另外两个程序都运行得很好，但是当我试图将它们连接在一起时，它并不像我想的那样工作。在我看来，问题在于循环功能。当我按下开关ON或OFF时，有时（很少）我可以打开或关闭灯。所以我的问题是......出了什么问题？它是循环问题，因为arduino不能同时在循环中处理两件事吗？可以解决，我真的不知道接下来该做什么。请帮助我，并提前致谢！
#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 ();
}
}
答案 0 :(得分：0)
您是否有串行输出样本？
同样对于你的reconnect（）函数，我认为你的ESP8266输出的Serial应该是Serial1，因为你在设置中使用了WiFi.init（＆amp; Serial1）。
在循环中，你有
if (!client.connected())
{
reconnect();
}
循环查看客户端是否已连接，如果没有则尝试重新连接。在重新连接时，它会尝试连接，如果它无法在每次连接时等待5秒。这可能是你的问题。
你有两个分开的程序的代码吗？
答案 1 :(得分：0)
这是DS18B20的代码，它可以正常工作
#include <OneWire.h>
#include <DallasTemperature.h>
#include <SPI.h>
#include <PubSubClient.h>
#include "WiFiEsp.h"
#ifndef HAVE_HWSERIAL1
#include "SoftwareSerial.h"
SoftwareSerial Serial1(3, 2); // RX, TX
#endif
byte server[] = { 192, 168, 1, 71 }; // IP Address of your MQTT Server
WiFiEspClient espClient;
PubSubClient client(espClient);
float temp = 0;
char ssid[] = "SSID"; // your network SSID (name)
char pwd[] = "password"; // your network password
#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 reconnect() {
// Loop until we're reconnected
while (!client.connected()) {
Serial.print("Attempting MQTT connection...");
// Attempt to connect
if (client.connect("arduinoClient_temperature_sensor")) {
Serial.println("connected");
} 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);
sensors.begin();
}
void temp_senz ()
{
sensors.requestTemperatures();
temp = sensors.getTempCByIndex(0);
Serial.print("Temperatura je: ");
Serial.println(temp);
client.publish("home/temperature", String(temp).c_str(),TRUE);
delay(1000);
}
void loop()
{
{
if (!client.connected()) {
reconnect();
}
client.loop();
temp_senz ();
}
}
这适用于灯泡，也可以使用。
#include <OneWire.h>
#include <DallasTemperature.h>
#include <SPI.h>
#include <PubSubClient.h>
#include "WiFiEsp.h"
// Emulate Serial1 on pins 7/6 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
byte server[] = { 192, 168, 1, 71 }; // IP Address of your MQTT Server
WiFiEspClient espClient;
PubSubClient client(espClient);
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 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 je konektan");
client.publish("outTopic","hsubscribello world");
client.subscribe("home/luc"); // Subscribe to all messages for this device
}
pinMode(7, OUTPUT);
digitalWrite(7, LOW);
}
void loop() {
client.loop();
}
