smash/ebk-unhb-co2ampel
2
1
Fork 0
forked from github/ebk_co2ampel
Code Issues 1 Pull requests Projects Releases 1 Wiki Activity

experimental feature: calibration when rebootet before 10s uptime

Browse source
This commit is contained in:
smash 2020-11-23 22:50:05 +01:00
parent 822429e456
commit 9830ad9984
1 changed files with 39 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

42
src/ebk_co2ampel.cpp
View file

@ -3,6 +3,7 @@
#include "SSD1306Wire.h"
#include <Adafruit_NeoPixel.h>
#include "fonts-custom.h"
#include <Preferences.h>
// Maximum CO² levels for green and yellow, everything above is considered red.
#define GREEN_CO2 800
@ -25,6 +26,7 @@
// number of LEDs connected
#define NUMPIXELS 12
Preferences preferences;
MHZ19 myMHZ19;
HardwareSerial mySerial(1);
@ -34,21 +36,47 @@ Adafruit_NeoPixel pixels = Adafruit_NeoPixel(NUMPIXELS, LED_PIN, NEO_RGB + NEO_K
unsigned long getDataTimer = 0;
int lastvals[120];
int dheight;
String ampelversion = "smash20201117-01";
String ampelversion = "0.1";
int safezone = 1;
int tocalibrateornot;
void setup() {
Serial.begin(9600);
Serial.println("boot...");
preferences.begin("co2", false);
tocalibrateornot = preferences.getUInt("cal",13); // 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);
myMHZ19.begin(mySerial);
pixels.clear();
display.init();
display.setContrast(255);
delay(1000);
delay(500);
display.clear();
display.flipScreenVertically();
display.setTextAlignment(TEXT_ALIGN_CENTER);
display.drawString(64 ,0 , String(ampelversion));
display.display();
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, "Calibration!");
display.display();
myMHZ19.setRange(2000);
myMHZ19.calibrateZero();
myMHZ19.setSpan(2000);
myMHZ19.autoCalibration(false);
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
for (int x = 0; x <= 119; x = x + 1) {
lastvals[x] = -1;
@ -89,6 +117,14 @@ void set_led_color(int co2) {
}
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) {
// Get new CO² value.
int CO2 = myMHZ19.getCO2();