github/ebk_co2ampel
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Merge branch 'main' of https://git.unhb.de/smash/ebk-unhb-co2ampel into main

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Michael Biermann 2020-11-23 23:52:15 +01:00
commit 2d6464fa7d
3 changed files with 78 additions and 1670 deletions
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1666
include/OLEDDisplayFonts.h → include/fonts-custom.h
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1
platformio.ini
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@ -17,3 +17,4 @@ lib_deps =
adafruit/Adafruit NeoPixel@^1.6.0 adafruit/Adafruit NeoPixel@^1.6.0
wifwaf/MH-Z19@^1.5.2 wifwaf/MH-Z19@^1.5.2
squix78/ESP8266_SSD1306@^4.1.0 squix78/ESP8266_SSD1306@^4.1.0
monitor_speed = 9600

81
src/ebk_co2ampel.cpp
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@ -2,13 +2,15 @@
#include "MHZ19.h" #include "MHZ19.h"
#include "SSD1306Wire.h" #include "SSD1306Wire.h"
#include <Adafruit_NeoPixel.h> #include <Adafruit_NeoPixel.h>
#include "fonts-custom.h"
#include <Preferences.h>
// Maximum CO² levels for green and yellow, everything above is considered red. // Maximum CO² levels for green and yellow, everything above is considered red.
#define GREEN_CO2 800 #define GREEN_CO2 800
#define YELLOW_CO2 1000 #define YELLOW_CO2 1000
// Measurement interval in miliseconds // Measurement interval in miliseconds
#define INTERVAL 60000 #define INTERVAL 15000
// Pins for MH-Z19 // Pins for MH-Z19
#define RX_PIN 16 #define RX_PIN 16
@ -24,6 +26,8 @@
// number of LEDs connected // number of LEDs connected
#define NUMPIXELS 8 #define NUMPIXELS 8
Preferences preferences;
MHZ19 myMHZ19; MHZ19 myMHZ19;
HardwareSerial mySerial(1); HardwareSerial mySerial(1);
SSD1306Wire display(0x3c, SDA_PIN, SCL_PIN); SSD1306Wire display(0x3c, SDA_PIN, SCL_PIN);
@ -32,19 +36,76 @@ Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, LED_PIN, NEO_RGB + NEO_K
unsigned long getDataTimer = 0; unsigned long getDataTimer = 0;
int lastvals[120]; int lastvals[120];
int dheight; int dheight;
String ampelversion = "0.1";
int safezone = 1;
int tocalibrateornot;
void setup() { void setup() {
Serial.begin(9600); Serial.begin(9600);
Serial.println("boot...");
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
preferences.putUInt("cal", 23); // wir sind gerade gestartet
Serial.println(ampelversion);
mySerial.begin(9600, SERIAL_8N1, RX_PIN, TX_PIN); mySerial.begin(9600, SERIAL_8N1, RX_PIN, TX_PIN);
myMHZ19.begin(mySerial); myMHZ19.begin(mySerial);
pixels.clear(); pixels.clear();
display.init(); display.init();
display.setFont(Cousine_Regular_54);
display.setContrast(255); display.setContrast(255);
delay(1000); delay(500);
display.clear(); display.clear();
display.flipScreenVertically(); display.flipScreenVertically();
display.setTextAlignment(TEXT_ALIGN_CENTER);
display.drawString(64 ,0 , String(ampelversion));
display.display();
dheight = display.getHeight(); dheight = display.getHeight();
myMHZ19.autoCalibration(); // myMHZ19.autoCalibration();
Serial.print("read EEPROM value: ");
Serial.println(tocalibrateornot);
if (tocalibrateornot == 23){
Serial.println("brace yourself, calibration starting! things either be better or all fucked up beyond this point...");
display.drawString(64, 20, "CAL!");
display.display();
for(int i=60; i > 0; i--){
display.clear();
display.drawString(64, 0, String(i));
display.display();
delay(1000);
}
myMHZ19.setRange(5000);
delay(500);
myMHZ19.calibrateZero();
delay(500);
myMHZ19.autoCalibration(false);
delay(500);
display.clear();
display.drawString(64, 0, "DONE");
display.display();
char myVersion[4];
myMHZ19.getVersion(myVersion);
Serial.print("\nFirmware Version: ");
for(byte i = 0; i < 4; i++)
{
Serial.print(myVersion[i]);
if(i == 1)
Serial.print(".");
}
Serial.println("");
Serial.print("Range: ");
Serial.println(myMHZ19.getRange());
Serial.print("Background CO2: ");
Serial.println(myMHZ19.getBackgroundCO2());
Serial.print("Temperature Cal: ");
Serial.println(myMHZ19.getTempAdjustment());
Serial.println("calibration done");
Serial.print("ABC Status: "); myMHZ19.getABC() ? Serial.println("ON") : Serial.println("OFF");
}
else if (tocalibrateornot ==42){
Serial.println("fake news, nobody has the intention to do calibration....");
}
// Fill array of last measurements with -1 // 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;
@ -82,6 +143,14 @@ void set_led_color(int co2) {
} }
void loop() { void loop() {
if (safezone == 1){
if (millis() == 10000) {
Serial.println(" safe zone, sensor stayed up longer than 10s");
preferences.putUInt("cal", 42); // wir haben die safe zone erreicht, beim naechsten boot nicht kalibrieren!
safezone = 0;
}
}
if (millis() - getDataTimer >= INTERVAL) { if (millis() - getDataTimer >= INTERVAL) {
// Get new CO² value. // Get new CO² value.
int CO2 = myMHZ19.getCO2(); int CO2 = myMHZ19.getCO2();
@ -111,7 +180,11 @@ void loop() {
display.display(); display.display();
// Debug output // Debug output
Serial.print("CO2 (ppm): "); Serial.print("CO2 (ppm): ");
Serial.println(CO2); Serial.print(CO2);
Serial.print(" Background CO2: ");
Serial.print(myMHZ19.getBackgroundCO2());
Serial.print(" uptime (seconds): ");
Serial.println(millis()/1000);
getDataTimer = millis(); getDataTimer = millis();
} }
} }