// This #include statement was automatically added by the Particle IDE.
#include "Adafruit_BME280/Adafruit_BME280.h"
/***************************************************************************
This is a library for the BME280 humidity, temperature & pressure sensor
Designed specifically to work with the Adafruit BME280 Breakout
----> http://www.adafruit.com/products/2650
These sensors use I2C or SPI to communicate, 2 or 4 pins are required
to interface.
Adafruit invests time and resources providing this open source code,
please support Adafruit andopen-source hardware by purchasing products
from Adafruit!
Written by Limor Fried & Kevin Townsend for Adafruit Industries.
BSD license, all text above must be included in any redistribution
This file was modified by Markus Haack (https://github.com/mhaack)
in order to work with Particle Photon & Core.
***************************************************************************/
#define BME_SCK D4
#define BME_MISO D3
#define BME_MOSI D2
#define BME_CS D5
#define SEALEVELPRESSURE_HPA (1013.25)
//This Sketch measure differential pressure across the air filter in the house HVAC
/* +-----+
* +----------| USB |----------+
* | +-----+ * |
* | [ ] VIN 3V3 [ ] |
* | [ ] GND RST [ ] |
* | [ ] TX VBAT [ ] |
* | [ ] RX [S] [R] GND [ ] |
* | [ ] WKP D7 [*] |
* | [ ] DAC +-------+ D6 [*] |
* | [ ] A5 | * | D5 [*] |
* | [ ] A4 |Photon | D4 [*] |P1 PWR
* | [ ] A3 | | D3 [*] |P2 PWR
* | [ ] A2 +-------+ D2 [*] |
* P1 | [*] A1 D1 [*] |SCL BME 0x76
* P2 | [*] A0 D0 [*] |SDA BME 0x76
* | |
* \ [] [______] /
* \_______________________/
*
*
*/
/*
This sample code demonstrates the normal use of a BME280 connected to Thingspeak
*/
Adafruit_BME280 bme; // I2C
//Adafruit_BME280 bme(BME_CS); // hardware SPI
//Adafruit_BME280 bme(BME_CS, BME_MOSI, BME_MISO, BME_SCK);
Timer timer(10000, checkEnvironment); // call this function every 10 seconds
Timer timer2(10000, serialDebug); // call this function every 10 seconds
Timer timer3(15000, updateThingspeak);
Timer timer4(5000, garagestatus);
//global Vars
int caladdress = 0;
int warm = 0;
double bme280temp = 0;
double bme280baro = 0;
double bme280humidity = 0;
double bme280altitude = 0;
double garageTemp = 0;
float analog1 = 0;
float analog2 = 0;
float analog3 = 0;
int count = 0;
const String key = "HTVK4BJ0XAUMVZV5"; //thingspeak write key
//ApplicationWatchdog wd(5000, System.reset); //5 second application watchdog
SYSTEM_MODE(SEMI_AUTOMATIC);
ApplicationWatchdog wd(60000, System.reset);
void setup() {
Serial.begin(230400);
Serial.println(F("BME280 test"));
/*if (!bme.begin(0x76)) { //0x76 is the i2c address of the sensor
Serial.println("Could not find a valid BME280 sensor, check wiring!");
while (1);
}*/
Particle.publish("DEBUG", "starting...");
if (bme.begin(0x76)) { //0x76 is the i2c address of the sensor
Particle.publish("DEBUG", "starting the environment timer...");
timer.start(); //initialize timer
timer2.start();//initialize timer2
timer3.start();//initialize timer2
}
else {
Particle.publish("WARN", "Could not find a valid BMP280 sensor, check wiring!");
}
Particle.publish("DEBUG", "started!");
Particle.connect();
Particle.variable("bme280temp", bme280temp);
Particle.variable("bme280hum", bme280humidity);
Particle.variable("bme280bar", bme280baro);
Particle.variable("bme280alt", bme280altitude);
}
void loop() {
digitalWrite(D7,!digitalRead(D7)); //blink D7
wd.checkin(); //watchdog checkin
if (System.buttonPushed() > 2000) { //trigger a wifi disconnect if you hold for over 2 seconds.
//RGB.color(255, 255, 0); // YELLOW
if (Particle.connected() == false) { //if not connected, delay, 5000ms before attempting reconnect. without delay was causing gps to fail.
Serial.println("Connecting to wifi");
Particle.connect();
delay(1000);
} else {
//Particle.disconnect();
WiFi.off();
delay(1000);
}
}
//garagestatus();
analog1 = analogRead(A0);
analog2 = analogRead(A1);
analog3 = analogRead(A2);
}
void garagestatus(){
if (bme280temp>=70){
warm=1;
}
else{
warm=0;
}
Particle.publish("Temp_143_garage", (warm));
delay(5000);
}
void serialDebug() {
Serial.print("Temperature = ");
Serial.print(bme.readTemperature());
Serial.println(" *C");
Serial.print("Pressure = ");
Serial.print(bme.readPressure() / 100.0F);
Serial.println(" hPa");
Serial.print("Approx. Altitude = ");
Serial.print(bme.readAltitude(SEALEVELPRESSURE_HPA));
Serial.println(" m");
Serial.print("Humidity = ");
Serial.print(bme.readHumidity());
Serial.println(" %");
Serial.println();
}
void checkEnvironment() {
Particle.publish("RSSI", String(WiFi.RSSI()));
//Particle.publish("DEBUG", "checking the environment...");
//read sensor
bme280temp = cToF(bme.readTemperature());
bme280baro = pToHg(bme.readPressure());
bme280altitude = bme.readAltitude(SEALEVELPRESSURE_HPA);
bme280humidity = bme.readHumidity();
//publish data
//commented out to not overload particle publish. only 4 allowed in a burst
//Particle.publish("environment/temperature2", String(bme280temp));
//Particle.publish("environment/pressure2", String(bme280baro));
//Particle.publish("environment/altitude2", String(bme280altitude));
//Particle.publish("environment/humidity2", String(bme280humidity));
}
float cToF(float c) {
return c * 9/5 + 32;
}
float pToHg(float p) {
return p/3389.39;
}
/*******************************************************************************
* Function Name : updateThingspeak
* Description : sends variables to ts
* Input : doorstatus global variables
* Output : sends data to ts
* Return : void
*******************************************************************************/
bool updateThingspeak()
{
//delay (2000);
count++;
Serial.print("Updating Thingspeak:");
Serial.print(count);
int rssival = WiFi.RSSI();
//sprintf(publishString,"%d",rssival);
//bool success = Particle.publish("RSSI",publishString);
//sprintf(publishString, "%1.4f", checkbattery());
bool success = Particle.publish("thingSpeakWrite_All", +
"{ \"1\": \"" + String(rssival) + "\"," +
"\"2\": \"" + String(bme280temp) + "\"," +
"\"3\": \"" + String(bme280humidity) + "\"," +
"\"4\": \"" + String(bme280baro) + "\"," +
"\"5\": \"" + String(bme280altitude) + "\"," +
"\"6\": \"" + String(analog1) + "\"," +
"\"7\": \"" + String(analog2) + "\"," +
"\"8\": \"" + String(analog3) + "\"," +
"\"k\": \"" + key + "\" }", 60, PRIVATE);
return success; //if sent, then turn of the send flag, otherwise let it try again.
}
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