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Joachim Hummel
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CO2-Ampel-MQTT-BME680-SCD30-7Segement.ino
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298
CO2-Ampel-MQTT-BME680-SCD30-7Segement.ino
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/* Disclaimer IoT-Werkstatt CC 4.0 BY NC SA
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. For Ardublock see the
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GNU General Public License for more details. */
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#include <ESP8266WiFi.h>
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#include <PubSubClient.h>
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#include <SparkFun_SCD30_Arduino_Library.h>
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#include <Wire.h>
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#include <bsec.h>
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#include <Ticker.h>
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#include <Adafruit_GFX.h>
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#include <Adafruit_LEDBackpack.h>
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#include <Adafruit_NeoPixel.h>
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String matrixausgabe_text = " "; // Ausgabetext als globale Variable
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volatile int matrixausgabe_index = 0;// aktuelle Position in Matrix
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IPAddress myOwnIP; // ownIP for mDNS
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//-------------- definition mqtt-object ueber WiFi
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WiFiClient espClient;
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PubSubClient mqttclient(espClient);
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//--------- list of mqtt callback functions
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#define MAX_MQTT_SUB 10 // maximal 10 subscriptions erlaubt
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typedef void (*mqtthandle) (byte*,unsigned int);
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typedef struct { // Typdeklaration Callback
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String topic; // mqtt-topic
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mqtthandle fun; // callback function
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}
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subscribe_type;
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subscribe_type mqtt_sub[MAX_MQTT_SUB];
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int mqtt_sub_count=0;
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String MQTT_Rx_Payload = "" ;
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//--------- mqtt callback function
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void mqttcallback(char* to, byte* pay, unsigned int len) {
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String topic = String(to);
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String payload = String((char*)pay);
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MQTT_Rx_Payload=payload.substring(0,len);
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Serial.println("\ncallback topic:" + topic + ", payload:" + MQTT_Rx_Payload);
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for (int i=0;i<mqtt_sub_count;i++) { // durchsuche alle subscriptions, bis topic passt
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if (topic==mqtt_sub[i].topic)
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mqtt_sub[i].fun(pay,len); // Aufruf der richtigen callback-Funktion
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}
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}
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//------------ reconnect mqtt-client
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void mqttreconnect() { // Loop until we're reconnected
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if (!mqttclient.connected()) {
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while (!mqttclient.connected()) {
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Serial.print("Attempting MQTT connection...");
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if (mqttclient.connect("IoTHackathon" , "xxxxx", "xxxxxx" )) {
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Serial.println("connected");
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for (int i=0;i<mqtt_sub_count;i++) { // subscribe topic
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mqttclient.subscribe(mqtt_sub[i].topic.c_str());
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Serial.println("\nsubscribe");
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Serial.print(mqtt_sub[i].topic);
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}
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}
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else {
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Serial.print("failed, rc=");
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Serial.print(mqttclient.state());
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Serial.println(" try again in 5 seconds");
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delay(5000);
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}
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}
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}
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else {
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mqttclient.loop();
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}
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}
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int CO2 = 0 ;
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//Reading CO2, humidity and temperature from the SCD30 By: Nathan Seidle SparkFun Electronics
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//https://github.com/sparkfun/SparkFun_SCD30_Arduino_Library
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SCD30 airSensorSCD30; // Objekt SDC30 Umweltsensor
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int TEMP = 0 ;
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/*
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Bosch BSEC Lib, https://github.com/BoschSensortec/BSEC-Arduino-library
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The BSEC software is only available for download or use after accepting the software license agreement.
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By using this library, you have agreed to the terms of the license agreement:
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https://ae-bst.resource.bosch.com/media/_tech/media/bsec/2017-07-17_ClickThrough_License_Terms_Environmentalib_SW_CLEAN.pdf */
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Bsec iaqSensor; // Create an object of the class Bsec
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Ticker Bsec_Ticker; // schedule cyclic update via Ticker
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const uint8_t bsec_config_iaq[] = {
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#include "config/generic_33v_3s_28d_2d_iaq_50_200/bsec_iaq.txt"
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};
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// ------------------------ Helper functions Bosch Bsec - Lib
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void checkIaqSensorStatus(void)
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{
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String output;
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if (iaqSensor.status != BSEC_OK) {
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if (iaqSensor.status < BSEC_OK) {
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output = "BSEC error code : " + String(iaqSensor.status);
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for (;;) {
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Serial.println(output);
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delay(500);
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} // Halt in case of failure
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}
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else {
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output = "BSEC warning code : " + String(iaqSensor.status);
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Serial.println(output);
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}
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}
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if (iaqSensor.bme680Status != BME680_OK) {
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if (iaqSensor.bme680Status < BME680_OK) {
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output = "BME680 error code : " + String(iaqSensor.bme680Status);
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for (;;){
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Serial.println(output);
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delay(500);
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} // Halt in case of failure
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}
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else {
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output = "BME680 warning code : " + String(iaqSensor.bme680Status);
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Serial.println(output);
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}
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}
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}
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// Housekeeping: scheduled update using ticker-lib
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void iaqSensor_Housekeeping(){ // get new data
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iaqSensor.run();
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}
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int LUFTDRUCK = 0 ;
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int FEUCHTE = 0 ;
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// Adafruit Feather 7 Segment https://learn.adafruit.com/adafruit-7-segment-led-featherwings/overview
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Adafruit_7segment matrix7Seg = Adafruit_7segment(); // 7Segment Feather
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Adafruit_NeoPixel pixels = Adafruit_NeoPixel(2,13,NEO_GRBW + NEO_KHZ800);
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void setup(){ // Einmalige Initialisierung
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Serial.begin(115200);
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//----------------------------------MQTT-Client
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mqttclient.setServer("mqtt.unixweb.eu", 1883);
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mqttclient.setCallback(mqttcallback);
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Wire.begin(); // ---- Initialisiere den I2C-Bus
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if (Wire.status() != I2C_OK) Serial.println("Something wrong with I2C");
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if (airSensorSCD30.begin() == false) {
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Serial.println("The SCD30 did not respond. Please check wiring.");
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while(1) {
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yield();
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delay(1);
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}
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}
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airSensorSCD30.setAutoSelfCalibration(false); // Sensirion no auto calibration
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airSensorSCD30.setMeasurementInterval(2); // CO2-Messung alle 2 s
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iaqSensor.begin(BME680_I2C_ADDR_PRIMARY, Wire);
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String output = "\nBSEC library version " + String(iaqSensor.version.major) + "." + String(iaqSensor.version.minor) + "." + String(iaqSensor.version.major_bugfix) + "." + String(iaqSensor.version.minor_bugfix);
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Serial.println(output);
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iaqSensor.setConfig(bsec_config_iaq);
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checkIaqSensorStatus();
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bsec_virtual_sensor_t sensorList[10] = {
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BSEC_OUTPUT_RAW_TEMPERATURE,
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BSEC_OUTPUT_RAW_PRESSURE,
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BSEC_OUTPUT_RAW_HUMIDITY,
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BSEC_OUTPUT_RAW_GAS,
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BSEC_OUTPUT_IAQ,
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BSEC_OUTPUT_STATIC_IAQ,
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BSEC_OUTPUT_CO2_EQUIVALENT,
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BSEC_OUTPUT_BREATH_VOC_EQUIVALENT,
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BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_TEMPERATURE,
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BSEC_OUTPUT_SENSOR_HEAT_COMPENSATED_HUMIDITY,
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};
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iaqSensor.updateSubscription(sensorList, 10, BSEC_SAMPLE_RATE_LP);
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checkIaqSensorStatus();
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iaqSensor_Housekeeping();
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Bsec_Ticker.attach_ms(3000, iaqSensor_Housekeeping);
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Serial.println();
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matrix7Seg.begin(0x70); // ---- Initialisiere 7Segment Matrix
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matrix7Seg.clear(); //
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matrix7Seg.writeDisplay();
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pixels.begin();//-------------- Initialisierung Neopixel
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delay(1);
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pixels.show();
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pixels.setPixelColor(0,0,0,0,0); // alle aus
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pixels.setPixelColor(1,0,0,0,0);
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pixels.show(); // und anzeigen
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//------------ WLAN initialisieren
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WiFi.disconnect();
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WiFi.persistent(false);
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WiFi.mode(WIFI_STA);
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delay(100);
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Serial.print ("\nWLAN connect to:");
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Serial.print("WLAN-24");
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WiFi.begin("WLAN-24","111111111");
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while (WiFi.status() != WL_CONNECTED) { // Warte bis Verbindung steht
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delay(500);
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Serial.print(".");
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};
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Serial.println ("\nconnected, meine IP:"+ WiFi.localIP().toString());
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matrixausgabe_text = " Meine IP:" + WiFi.localIP().toString();
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myOwnIP = WiFi.localIP();
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matrixausgabe_index=0;
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Wire.setClock(100000L); // 100 kHz SCD30
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Wire.setClockStretchLimit(200000L);// CO2-SCD30
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}
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void loop() { // Kontinuierliche Wiederholung
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CO2 = airSensorSCD30.getCO2() ;
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TEMP = iaqSensor.temperature ;
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LUFTDRUCK = (iaqSensor.pressure/100.) ;
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FEUCHTE = iaqSensor.humidity ;
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mqttreconnect();
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{
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String pay=String(String(CO2));
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mqttclient.publish("Octopus/CO2",pay.c_str());
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Serial.print("\nmqtt publish: ");
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Serial.print(pay);
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};
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mqttreconnect();
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{
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String pay=String(String(TEMP));
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mqttclient.publish("Octopus/Temp",pay.c_str());
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Serial.print("\nmqtt publish: ");
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Serial.print(pay);
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};
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mqttreconnect();
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{
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String pay=String(String(LUFTDRUCK));
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mqttclient.publish("Octopus/Luftdruck",pay.c_str());
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Serial.print("\nmqtt publish: ");
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Serial.print(pay);
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};
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mqttreconnect();
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{
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String pay=String(String(FEUCHTE));
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mqttclient.publish("Octopus/Feuchte",pay.c_str());
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Serial.print("\nmqtt publish: ");
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Serial.print(pay);
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};
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Serial.print("CO2:"+String(String(CO2)));
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Serial.println();
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matrix7Seg.print(TEMP);
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matrix7Seg.writeDigitNum(0,1,true);
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matrix7Seg.writeDisplay();
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delay( 2000 );
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matrix7Seg.print(LUFTDRUCK);
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matrix7Seg.writeDigitNum(0,2,true);
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matrix7Seg.writeDisplay();
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delay( 2000 );
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matrix7Seg.print(FEUCHTE);
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matrix7Seg.writeDigitNum(0,3,true);
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matrix7Seg.writeDisplay();
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delay( 2000 );
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matrix7Seg.print(CO2);
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matrix7Seg.writeDisplay();
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if (( ( CO2 ) < ( 1000 ) ))
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{
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Serial.print("green");
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Serial.println();
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pixels.setPixelColor(0,0,30,0,0);
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pixels.show();
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pixels.setPixelColor(1,0,30,0,0);
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pixels.show();
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}
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else
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{
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if (( ( CO2 ) < ( 1400 ) ))
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{
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pixels.setPixelColor(0,30,30,0,0);
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pixels.show();
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pixels.setPixelColor(1,30,30,0,0);
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pixels.show();
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Serial.print("yellow");
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Serial.println();
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}
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else
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{
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pixels.setPixelColor(0,40,0,0,0);
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pixels.show();
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pixels.setPixelColor(1,40,0,0,0);
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pixels.show();
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Serial.print("red");
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Serial.println();
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}
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}
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delay( 6000 );
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} //end loop
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@ -23,10 +23,10 @@
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* https://www.umwelt-campus.de/forschung/projekte/iot-werkstatt/ideen-zur-corona-krise
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* WICHTIG Kalibrierung des Sensor https://www.youtube.com/watch?v=od_XsBE6hU4
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