Ollo/HomieRoomSensor
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Initial version of BME688

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Ollo 2021-11-19 22:59:34 +01:00
parent 4d161fe711
commit bb0e0b4086
2 changed files with 37 additions and 19 deletions
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3
platformio.ini
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@ -17,5 +17,4 @@ build_flags = -D PIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY
lib_deps = https://github.com/homieiot/homie-esp8266.git#develop lib_deps = https://github.com/homieiot/homie-esp8266.git#develop
EspSoftwareSerial EspSoftwareSerial
NeoPixel NeoPixel
adafruit/Adafruit BMP280 Library @ ^2.4.2 adafruit/Adafruit BME680 Library @ ^2.0.1

53
src/main.cpp
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@ -18,7 +18,7 @@
#include <Adafruit_NeoPixel.h> #include <Adafruit_NeoPixel.h>
#include <Wire.h> #include <Wire.h>
#include <Adafruit_Sensor.h> #include <Adafruit_Sensor.h>
#include <Adafruit_BMP280.h> #include "Adafruit_BME680.h"
/****************************************************************************** /******************************************************************************
* DEFINES * DEFINES
@ -34,8 +34,8 @@
#define PM1006_MQTT_UPDATE 5000 /**< Check the sensor every 10 seconds; New measurement is done every 20seconds by the sensor */ #define PM1006_MQTT_UPDATE 5000 /**< Check the sensor every 10 seconds; New measurement is done every 20seconds by the sensor */
#define PIXEL_COUNT 3 #define PIXEL_COUNT 3
#define GPIO_BUTTON SENSOR_PM1006_RX /**< Button and software serial share one pin on Witty board */ #define GPIO_BUTTON SENSOR_PM1006_RX /**< Button and software serial share one pin on Witty board */
#define SENSOR_I2C_SCK D5 /**< GPIO14 - I2C clock pin */ #define SENSOR_I2C_SCK D1 /**< GPIO14 - I2C clock pin */
#define SENSOR_I2C_SDI D1 /**< GPIO5 - I2C data pin */ #define SENSOR_I2C_SDI D5 /**< GPIO5 - I2C data pin */
#define PM1006_BIT_RATE 9600 #define PM1006_BIT_RATE 9600
#define PM1006_MQTT_UPDATE 5000 /**< Check the sensor every 10 seconds; New measurement is done every 20seconds by the sensor */ #define PM1006_MQTT_UPDATE 5000 /**< Check the sensor every 10 seconds; New measurement is done every 20seconds by the sensor */
@ -62,6 +62,9 @@
#define NODE_TEMPERATUR "temp" #define NODE_TEMPERATUR "temp"
#define NODE_PRESSURE "pressure" #define NODE_PRESSURE "pressure"
#define NODE_ALTITUDE "altitude" #define NODE_ALTITUDE "altitude"
#define NODE_GAS "gas"
#define NODE_HUMIDITY "humidity"
/****************************************************************************** /******************************************************************************
* TYPE DEFS * TYPE DEFS
******************************************************************************/ ******************************************************************************/
@ -83,12 +86,14 @@ HomieNode particle(NODE_PARTICE, "particle", "Particle"); /**< Measuret in micro
HomieNode temperatureNode(NODE_TEMPERATUR, "Room Temperature", "Room Temperature"); HomieNode temperatureNode(NODE_TEMPERATUR, "Room Temperature", "Room Temperature");
HomieNode pressureNode(NODE_PRESSURE, "Pressure", "Room Pressure"); HomieNode pressureNode(NODE_PRESSURE, "Pressure", "Room Pressure");
HomieNode altitudeNode(NODE_ALTITUDE, "Altitude", "Room altitude"); HomieNode altitudeNode(NODE_ALTITUDE, "Altitude", "Room altitude");
HomieNode gasNode(NODE_GAS, "Gas", "Room gas");
HomieNode humidityNode(NODE_HUMIDITY, "Humidity", "Room humidity");
HomieSetting<bool> i2cEnable("i2c", "BMP280 sensor present"); HomieSetting<bool> i2cEnable("i2c", "BME280 sensor present");
HomieSetting<bool> rgbTemp("rgbTemp", "Show temperatur via red (>20 °C) and blue (< 20°C)"); HomieSetting<bool> rgbTemp("rgbTemp", "Show temperatur via red (>20 °C) and blue (< 20°C)");
static SoftwareSerial pmSerial(SENSOR_PM1006_RX, SENSOR_PM1006_TX); static SoftwareSerial pmSerial(SENSOR_PM1006_RX, SENSOR_PM1006_TX);
Adafruit_BMP280 bmp; // connected via I2C Adafruit_BME680 bme(&Wire); // connected via I2C
Adafruit_NeoPixel strip(PIXEL_COUNT, GPIO_WS2812, NEO_GRB + NEO_KHZ800); Adafruit_NeoPixel strip(PIXEL_COUNT, GPIO_WS2812, NEO_GRB + NEO_KHZ800);
@ -176,11 +181,20 @@ void onHomieEvent(const HomieEvent &event)
} }
void bmpPublishValues() { void bmpPublishValues() {
temperatureNode.setProperty(NODE_TEMPERATUR).send(String(bmp.readTemperature())); // Tell BME680 to begin measurement.
pressureNode.setProperty(NODE_PRESSURE).send(String(bmp.readPressure() / 100.0F)); unsigned long endTime = bme.beginReading();
altitudeNode.setProperty(NODE_ALTITUDE).send(String(bmp.readAltitude(SEALEVELPRESSURE_HPA))); if (endTime == 0) {
return;
}
temperatureNode.setProperty(NODE_TEMPERATUR).send(String(bme.readTemperature()));
pressureNode.setProperty(NODE_PRESSURE).send(String(bme.readPressure() / 100.0F));
altitudeNode.setProperty(NODE_ALTITUDE).send(String(bme.readAltitude(SEALEVELPRESSURE_HPA)));
gasNode.setProperty(NODE_GAS).send(String((bme.gas_resistance / 1000.0)));
humidityNode.setProperty(NODE_HUMIDITY).send(String(bme.humidity));
if (rgbTemp.get()) { if (rgbTemp.get()) {
if (bmp.readTemperature() < TEMPBORDER) { if (bme.readTemperature() < TEMPBORDER) {
strip.setPixelColor(0, strip.Color(0,0,255)); strip.setPixelColor(0, strip.Color(0,0,255));
} else { } else {
strip.setPixelColor(0, strip.Color(255,0,0)); strip.setPixelColor(0, strip.Color(255,0,0));
@ -262,6 +276,12 @@ void setup()
altitudeNode.advertise(NODE_ALTITUDE).setName("Altitude") altitudeNode.advertise(NODE_ALTITUDE).setName("Altitude")
.setDatatype("float") .setDatatype("float")
.setUnit("m"); .setUnit("m");
gasNode.advertise(NODE_GAS).setName("Gas")
.setDatatype("float")
.setUnit(" KOhms");
humidityNode.advertise(NODE_HUMIDITY).setName("Humidity")
.setDatatype("float")
.setUnit("%");
strip.begin(); strip.begin();
@ -276,18 +296,17 @@ void setup()
strip.fill(strip.Color(0,128,0)); strip.fill(strip.Color(0,128,0));
strip.show(); strip.show();
/* Extracted from library's example */ /* Extracted from library's example */
if (!bmp.begin()) { if (!bme.begin()) {
Serial.println(F("Could not find a valid BMP280 sensor, check wiring or " Serial.println(F("Could not find a valid BME680 sensor, check wiring or "
"try a different address!")); "try a different address!"));
while (1) delay(10); while (1) delay(10);
} }
/* Default settings from datasheet. */ bme.setTemperatureOversampling(BME680_OS_8X);
bmp.setSampling(Adafruit_BMP280::MODE_NORMAL, /* Operating Mode. */ bme.setHumidityOversampling(BME680_OS_2X);
Adafruit_BMP280::SAMPLING_X2, /* Temp. oversampling */ bme.setPressureOversampling(BME680_OS_4X);
Adafruit_BMP280::SAMPLING_X16, /* Pressure oversampling */ bme.setIIRFilterSize(BME680_FILTER_SIZE_3);
Adafruit_BMP280::FILTER_X16, /* Filtering. */ bme.setGasHeater(320, 150); // 320*C for 150 ms
Adafruit_BMP280::STANDBY_MS_500); /* Standby time. */
} }
strip.fill(strip.Color(0,0,0)); strip.fill(strip.Color(0,0,0));
for (int i=0;i < (PIXEL_COUNT / 2); i++) { for (int i=0;i < (PIXEL_COUNT / 2); i++) {