github/ebk_co2ampel
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This commit is contained in:
Stefan H. 2020-11-26 16:07:29 +01:00
parent 529dc9b818
commit 94c47504e4
1 changed files with 44 additions and 37 deletions
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77
src/ebk_co2ampel.cpp
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@ -6,27 +6,28 @@
#include <Preferences.h> #include <Preferences.h>
#include "uptime_formatter.h" #include "uptime_formatter.h"
// Maximum CO² levels for green and yellow, everything above is considered red. // Grenzwerte für die CO2 Werte für grün und gelb, alles überhalb davon bedeutet rot
#define GREEN_CO2 800 #define GREEN_CO2 800
#define YELLOW_CO2 1000 #define YELLOW_CO2 1000
// Measurement interval in miliseconds // CO2 Messintervall in Milisekunden
#define INTERVAL 15000 #define INTERVAL 15*1000
#define CALINTERVAL 180000 // Dauer der Kalibrierungsphase in Milisekunden
#define CALINTERVAL 180*1000
// Pins for MH-Z19 // Pins für den MH-Z19b
#define RX_PIN 16 #define RX_PIN 16
#define TX_PIN 17 #define TX_PIN 17
// Pins for SD1306 // Pins für das SD1306 OLED-Display
#define SDA_PIN 21 #define SDA_PIN 21
#define SCL_PIN 22 #define SCL_PIN 22
// Pin for LED // Pin für den LED-Ring
#define LED_PIN 4 #define LED_PIN 4
// number of LEDs connected // Anzahl der angeschlossenen LEDs am Ring
#define NUMPIXELS 12 #define NUMPIXELS 8
Preferences preferences; Preferences preferences;
@ -49,17 +50,17 @@ void switchBootMode(int bm){
switch (bm){ switch (bm){
case 23: case 23:
preferences.putUInt("cal", 42); preferences.putUInt("cal", 42);
Serial.println("startmodus naechster reboot: messmodus"); Serial.println("Startmodus nächster Reboot: Messmodus");
break; break;
case 42: case 42:
preferences.putUInt("cal", 23); preferences.putUInt("cal", 23);
Serial.println("startmodus naechster reboot: kalibrierungsmodus"); Serial.println("Startmodus nächster Reboot: Kalibrierungsmodus");
break; break;
case 69: case 69:
Serial.println("EEPROM lesen war nicht moeglich!"); Serial.println("EEPROM lesen war nicht möglich!");
break; break;
default: default:
Serial.print("EEPROM lesen lieferte unerwarteten wert: "); Serial.print("EEPROM lesen lieferte unerwarteten Wert: ");
Serial.println(bm); Serial.println(bm);
break; break;
} }
@ -70,10 +71,22 @@ void setup() {
Serial.println("Starte..."); Serial.println("Starte...");
Serial.print("CO2-Ampel Firmware: ");Serial.println(ampelversion); Serial.print("CO2-Ampel Firmware: ");Serial.println(ampelversion);
// Ab hier Bootmodus initialisieren und festlegen
preferences.begin("co2", false); preferences.begin("co2", false);
tocalibrateornot = preferences.getUInt("cal",69); // wir lesen unser flag ein, 23 = reboot vor safezone, wir wollen kalibrieren, 42 = reboot nach safezone, wir tun nichts tocalibrateornot = preferences.getUInt("cal",69); // wir lesen unser flag ein,
// 23 = reboot vor safezone, wir wollen kalibrieren,
// 42 = reboot nach safezone, wir tun nichts
preferences.putUInt("cal", 23); // wir sind gerade gestartet preferences.putUInt("cal", 23); // wir sind gerade gestartet
switch(tocalibrateornot){
case 23:
Serial.println("Startmodus Aktuell: Kalibrierungsmodus");
break;
case 42:
Serial.println("Startmodus Aktuell: Messmodus");
break;
}
// Ab hier Display einrichten
display.init(); display.init();
display.setFont(Cousine_Regular_54); display.setFont(Cousine_Regular_54);
display.setContrast(255); display.setContrast(255);
@ -85,9 +98,10 @@ void setup() {
display.display(); display.display();
dheight = display.getHeight(); dheight = display.getHeight();
// Ab hier Sensor einrichten
mySerial.begin(9600, SERIAL_8N1, RX_PIN, TX_PIN); mySerial.begin(9600, SERIAL_8N1, RX_PIN, TX_PIN);
myMHZ19.begin(mySerial); myMHZ19.begin(mySerial);
myMHZ19.autoCalibration(false); // baseline calibration erstmal aus myMHZ19.autoCalibration(false); // "Automatic Baseline Calibration" (ABC) erstmal aus
char myVersion[4]; char myVersion[4];
myMHZ19.getVersion(myVersion); myMHZ19.getVersion(myVersion);
Serial.print("\nMH-Z19b Firmware Version: "); Serial.print("\nMH-Z19b Firmware Version: ");
@ -98,20 +112,12 @@ void setup() {
Serial.print("ABC Status: "); myMHZ19.getABC() ? Serial.println("ON") : Serial.println("OFF"); Serial.print("ABC Status: "); myMHZ19.getABC() ? Serial.println("ON") : Serial.println("OFF");
Serial.print("read EEPROM value: "); Serial.println(tocalibrateornot); Serial.print("read EEPROM value: "); Serial.println(tocalibrateornot);
switch(tocalibrateornot){ // Liste der Messwerte mit "-1" befüllen ("-1" wird beinm Graph nicht gezeichnet)
case 23:
Serial.println("startmodus aktuell: kalibrierungsmodus");
break;
case 42:
Serial.println("startmodus aktuell: messmodus");
break;
}
// Pre-Fill array of last measurements with -1
for (int x = 0; x <= 119; x = x + 1) { for (int x = 0; x <= 119; x = x + 1) {
lastvals[x] = -1; lastvals[x] = -1;
} }
// Ab hier LED-Ring konfigurien
pixels.begin(); pixels.begin();
pixels.clear(); pixels.clear();
for(int i=0; i<NUMPIXELS; i++) { for(int i=0; i<NUMPIXELS; i++) {
@ -119,7 +125,7 @@ void setup() {
pixels.show(); pixels.show();
} }
switchBootMode(tocalibrateornot); // beim naechsten boot im anderen modus starten switchBootMode(tocalibrateornot); // beim nächsten boot im anderen modus starten
} }
int calc_vpos_for_co2(int co2val, int display_height) { int calc_vpos_for_co2(int co2val, int display_height) {
@ -128,17 +134,18 @@ int calc_vpos_for_co2(int co2val, int display_height) {
void set_led_color(int co2) { void set_led_color(int co2) {
if (co2 < GREEN_CO2) { if (co2 < GREEN_CO2) {
// Green // Grün
pixels.
for(int i=0; i<NUMPIXELS; i++) { for(int i=0; i<NUMPIXELS; i++) {
pixels.setPixelColor(i, 30,0,0); pixels.setPixelColor(i, 30,0,0);
} }
} else if (co2 < YELLOW_CO2) { } else if (co2 < YELLOW_CO2) {
// Yellow // Gelb
for(int i=0; i<NUMPIXELS; i++) { for(int i=0; i<NUMPIXELS; i++) {
pixels.setPixelColor(i, 40,40,0); pixels.setPixelColor(i, 40,40,0);
} }
} else { } else {
// Red // Rot
for(int i=0; i<NUMPIXELS; i++) { for(int i=0; i<NUMPIXELS; i++) {
pixels.setPixelColor(i, 0,90,0); pixels.setPixelColor(i, 0,90,0);
} }
@ -177,15 +184,15 @@ void calibrateCO2(){
} }
void readco2(){ void readco2(){
if (millis() - getDataTimer >= INTERVAL) { if (millis() - getDataTimer >= INTERVAL) {
// Get new CO² value. // Neuen CO2 Wert lesen
int CO2 = myMHZ19.getCO2(); int CO2 = myMHZ19.getCO2();
// Shift entries in array back one position. // Alle Werte in der Messwertliste um eins verschieben
for (int x = 1; x <= 119; x = x + 1) { for (int x = 1; x <= 119; x = x + 1) {
lastvals[x - 1] = lastvals[x]; lastvals[x - 1] = lastvals[x];
} }
// Add new measurement at the end. // Aktuellen Messer am Ende einfügen
lastvals[119] = CO2; lastvals[119] = CO2;
// Clear display and redraw whole graph. // Display löschen und alles neu schreiben/zeichnen
display.clear(); display.clear();
for (int h = 1; h < 120; h = h + 1) { for (int h = 1; h < 120; h = h + 1) {
int curval = lastvals[h]; int curval = lastvals[h];
@ -195,7 +202,7 @@ void readco2(){
display.drawLine(h - 1, vpos_last, h, vpos); display.drawLine(h - 1, vpos_last, h, vpos);
} }
} }
// Set LED color and print value on display // Farbe des LED-Rings setzen
if (tocalibrateornot == 42) {set_led_color(CO2);} if (tocalibrateornot == 42) {set_led_color(CO2);}
//display.setLogBuffer(1, 30); //display.setLogBuffer(1, 30);
display.setFont(Cousine_Regular_54); display.setFont(Cousine_Regular_54);
@ -203,7 +210,7 @@ void readco2(){
display.drawString(64 ,0 , String(CO2)); display.drawString(64 ,0 , String(CO2));
//display.drawLogBuffer(0, 0); //display.drawLogBuffer(0, 0);
display.display(); display.display();
// Debug output // Ein wenig Debug-Ausgabe
Serial.print("CO2 (ppm): "); Serial.print("CO2 (ppm): ");
Serial.print(CO2); Serial.print(CO2);
Serial.print(" Background CO2: " + String(myMHZ19.getBackgroundCO2())); Serial.print(" Background CO2: " + String(myMHZ19.getBackgroundCO2()));