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https://github.com/Eigenbaukombinat/ebk_co2ampel.git
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Merge branch 'main' of https://git.unhb.de/smash/ebk-unhb-co2ampel into main
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commit
2d6464fa7d
3 changed files with 78 additions and 1670 deletions
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@ -17,3 +17,4 @@ lib_deps =
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adafruit/Adafruit NeoPixel@^1.6.0
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wifwaf/MH-Z19@^1.5.2
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squix78/ESP8266_SSD1306@^4.1.0
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monitor_speed = 9600
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@ -2,13 +2,15 @@
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#include "MHZ19.h"
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#include "SSD1306Wire.h"
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#include <Adafruit_NeoPixel.h>
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#include "fonts-custom.h"
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#include <Preferences.h>
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// Maximum CO² levels for green and yellow, everything above is considered red.
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#define GREEN_CO2 800
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#define YELLOW_CO2 1000
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// Measurement interval in miliseconds
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#define INTERVAL 60000
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#define INTERVAL 15000
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// Pins for MH-Z19
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#define RX_PIN 16
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@ -24,6 +26,8 @@
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// number of LEDs connected
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#define NUMPIXELS 8
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Preferences preferences;
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MHZ19 myMHZ19;
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HardwareSerial mySerial(1);
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SSD1306Wire display(0x3c, SDA_PIN, SCL_PIN);
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@ -32,19 +36,76 @@ Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, LED_PIN, NEO_RGB + NEO_K
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unsigned long getDataTimer = 0;
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int lastvals[120];
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int dheight;
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String ampelversion = "0.1";
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int safezone = 1;
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int tocalibrateornot;
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void setup() {
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Serial.begin(9600);
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Serial.println("boot...");
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preferences.begin("co2", false);
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tocalibrateornot = preferences.getUInt("cal",69); // wir lesen unser flag ein, 23 = reboot vor safezone, wir wollen kalibrieren, 42 = reboot nach safezone, wir tun nichts
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preferences.putUInt("cal", 23); // wir sind gerade gestartet
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Serial.println(ampelversion);
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mySerial.begin(9600, SERIAL_8N1, RX_PIN, TX_PIN);
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myMHZ19.begin(mySerial);
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pixels.clear();
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display.init();
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display.setFont(Cousine_Regular_54);
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display.setContrast(255);
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delay(1000);
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delay(500);
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display.clear();
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display.flipScreenVertically();
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display.setTextAlignment(TEXT_ALIGN_CENTER);
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display.drawString(64 ,0 , String(ampelversion));
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display.display();
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dheight = display.getHeight();
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myMHZ19.autoCalibration();
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// myMHZ19.autoCalibration();
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Serial.print("read EEPROM value: ");
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Serial.println(tocalibrateornot);
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if (tocalibrateornot == 23){
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Serial.println("brace yourself, calibration starting! things either be better or all fucked up beyond this point...");
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display.drawString(64, 20, "CAL!");
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display.display();
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for(int i=60; i > 0; i--){
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display.clear();
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display.drawString(64, 0, String(i));
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display.display();
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delay(1000);
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}
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myMHZ19.setRange(5000);
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delay(500);
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myMHZ19.calibrateZero();
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delay(500);
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myMHZ19.autoCalibration(false);
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delay(500);
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display.clear();
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display.drawString(64, 0, "DONE");
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display.display();
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char myVersion[4];
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myMHZ19.getVersion(myVersion);
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Serial.print("\nFirmware Version: ");
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for(byte i = 0; i < 4; i++)
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{
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Serial.print(myVersion[i]);
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if(i == 1)
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Serial.print(".");
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}
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Serial.println("");
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Serial.print("Range: ");
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Serial.println(myMHZ19.getRange());
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Serial.print("Background CO2: ");
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Serial.println(myMHZ19.getBackgroundCO2());
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Serial.print("Temperature Cal: ");
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Serial.println(myMHZ19.getTempAdjustment());
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Serial.println("calibration done");
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Serial.print("ABC Status: "); myMHZ19.getABC() ? Serial.println("ON") : Serial.println("OFF");
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}
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else if (tocalibrateornot ==42){
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Serial.println("fake news, nobody has the intention to do calibration....");
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}
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// Fill array of last measurements with -1
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for (int x = 0; x <= 119; x = x + 1) {
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lastvals[x] = -1;
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@ -82,6 +143,14 @@ void set_led_color(int co2) {
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}
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void loop() {
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if (safezone == 1){
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if (millis() == 10000) {
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Serial.println(" safe zone, sensor stayed up longer than 10s");
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preferences.putUInt("cal", 42); // wir haben die safe zone erreicht, beim naechsten boot nicht kalibrieren!
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safezone = 0;
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}
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}
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if (millis() - getDataTimer >= INTERVAL) {
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// Get new CO² value.
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int CO2 = myMHZ19.getCO2();
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@ -111,7 +180,11 @@ void loop() {
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display.display();
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// Debug output
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Serial.print("CO2 (ppm): ");
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Serial.println(CO2);
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Serial.print(CO2);
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Serial.print(" Background CO2: ");
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Serial.print(myMHZ19.getBackgroundCO2());
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Serial.print(" uptime (seconds): ");
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Serial.println(millis()/1000);
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getDataTimer = millis();
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}
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}
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