Problem modifying code
Posted: Sun Nov 10, 2019 11:30 amDear All,
I am using NodeMCU in Arduino IDE
The code works well with Onewire and ds18b20 temprature sensor
I am trying to modify a code I received to add the DTH21 to connect to Cayenne MQTT
Can someone help me put it rightly? I am a novice in coding anything.
I am using NodeMCU in Arduino IDE
The code works well with Onewire and ds18b20 temprature sensor
I am trying to modify a code I received to add the DTH21 to connect to Cayenne MQTT
Can someone help me put it rightly? I am a novice in coding anything.
Code: Select all
#define CAYENNE_PRINT Serial // Comment this out to disable prints and save space
#include <OneWire.h>
#include <DallasTemperature.h>
#include <CayenneMQTTESP8266.h>
#include <ESP8266WiFi.h>
#include <Adafruit_Sensor.h>
#include <DHT.h>
#include <DHT_U.h>
// WiFi network info.
char ssid[] = "HImac";
char wifiPassword[] = "rat22";
// Cayenne authentication info. This should be obtained from the Cayenne Dashboard.
char username[] = "xxxxxxx";
char password[] = "xxxxxxxxxxx";
char clientID[] = "xxxxx";
#define SENSOR_PIN D3 // Digital pin connected to the Sump Temp sensor
#define VIRTUAL_CHANNEL 1
#define DHTPIN D2 // D2 // Digital pin connected to the DTH sensor
#define VIRTUAL_CHANNEL 2
#define DHTTYPE DHT21 // DHT21 (AM2301)
OneWire oneWire(SENSOR_PIN);
DallasTemperature sensors(&oneWire);
DHT_Unified dht(DHTPIN, DHTTYPE);
uint32_t delayMS;
void setup()
{
Serial.begin(9600);
Cayenne.begin(username, password, clientID);
sensors.begin();
// Initialize device
dht.begin();
// Print humidity sensor details
sensor_t sensor;
//dht.temperature().getSensor(&sensor);
dht.humidity().getSensor(&sensor);
// Set delay between sensor readings based on sensor details.
delayMS = sensor.min_delay / 1000;
}
void loop()
{
Cayenne.loop();
}
// This function is called at intervals to send sensor data to Cayenne.
CAYENNE_OUT(VIRTUAL_CHANNEL)
{
// Send the command to get temperatures.
sensors.requestTemperatures();
// This command writes the temperature in Celsius to the Virtual Channel.
Cayenne.celsiusWrite(VIRTUAL_CHANNEL, sensors.getTempCByIndex(0));
// To send the temperature in Fahrenheit use the corresponding code below.
//Cayenne.fahrenheitWrite(VIRTUAL_CHANNEL, sensors.getTempFByIndex(0));
// Send the command to get Humidity
//
// This command writes the Humidity in percentage to the Virtual Channel.
}