zotan/esp32-co2-mhz19b
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Make timers more better, add uncrustify config

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This commit is contained in:
Laura Hausmann 2023-04-20 20:12:56 +02:00
parent 34f37b9dda
commit 91c21a02d5
Signed by: zotan
GPG key ID: D044E84C5BE01605
2 changed files with 3689 additions and 88 deletions
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3593
.uncrustify.cfg Normal file
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184
src/main.cpp
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@ -7,121 +7,129 @@ MHZ19 myMHZ19;
Adafruit_AHTX0 aht; Adafruit_AHTX0 aht;
LiquidCrystal_I2C LCD(0x27,2,1,0,4,5,6,7,3,POSITIVE); LiquidCrystal_I2C LCD(0x27,2,1,0,4,5,6,7,3,POSITIVE);
int greenpin = 25; #define PIN_LED_GREEN 25
int yellownpin = 33; #define PIN_LED_YELLOW 33
int redpin = 32; #define PIN_LED_RED 32
int backlightState = HIGH; int backlightState = HIGH;
int backlightUpdate = 0;
int update_ival = 0; volatile bool interruptFired = false;
int override = 0; unsigned long lastInterrupt = 0;
unsigned long lastUpdated = 0;
unsigned const int updateTimer = 5000;
unsigned const int interruptTimer = 500;
int ready = 0;
int cal_time = 5; //minutes int cal_time = 5; //minutes
void led(int red, int green, int yellow) void led(int red, int green, int yellow)
{ {
analogWrite(redpin, red); analogWrite(PIN_LED_RED, red);
analogWrite(greenpin, green); analogWrite(PIN_LED_GREEN, green);
analogWrite(yellownpin, yellow); analogWrite(PIN_LED_YELLOW, yellow);
} }
void IRAM_ATTR BacklightToggle() { void IRAM_ATTR BacklightToggle() {
backlightUpdate = true; if (!interruptFired)
interruptFired = true;
} }
void setup() void setup()
{ {
Serial.begin(9600); Serial.begin(9600);
Serial2.begin(9600, SERIAL_8N1, 16, 17); Serial2.begin(9600, SERIAL_8N1, 16, 17);
myMHZ19.begin(Serial2); myMHZ19.begin(Serial2);
myMHZ19.autoCalibration(); myMHZ19.autoCalibration();
myMHZ19.setRange(2000); myMHZ19.setRange(2000);
Serial.println("MHZ19 init:"); Serial.println("MHZ19 init:");
char myVersion[4]; char myVersion[4];
myMHZ19.getVersion(myVersion); myMHZ19.getVersion(myVersion);
Serial.print("\nFirmware Version: "); Serial.print("\nFirmware Version: ");
for(byte i = 0; i < 4; i++) for(byte i = 0; i < 4; i++)
{ {
Serial.print(myVersion[i]); Serial.print(myVersion[i]);
if(i == 1) if(i == 1)
Serial.print("."); Serial.print(".");
} }
Serial.println(""); Serial.println("");
Serial.print("Range: "); Serial.print("Range: ");
Serial.println(myMHZ19.getRange()); Serial.println(myMHZ19.getRange());
Serial.print("Background CO2: "); Serial.print("Background CO2: ");
Serial.println(myMHZ19.getBackgroundCO2()); Serial.println(myMHZ19.getBackgroundCO2());
Serial.print("Temperature Cal: "); Serial.print("Temperature Cal: ");
Serial.println(myMHZ19.getTempAdjustment()); Serial.println(myMHZ19.getTempAdjustment());
Serial.print("ABC Status: "); myMHZ19.getABC() ? Serial.println("ON") : Serial.println("OFF"); Serial.print("ABC Status: "); myMHZ19.getABC() ? Serial.println("ON") : Serial.println("OFF");
if (!aht.begin()) { if (!aht.begin()) {
Serial.println("Could not find AHT? Check wiring"); Serial.println("Could not find AHT? Check wiring");
while (true); while (true);
} }
LCD.begin(16, 2); LCD.begin(16, 2);
LCD.clear(); LCD.clear();
LCD.setBacklight(backlightState); LCD.setBacklight(backlightState);
pinMode(23, INPUT_PULLUP); pinMode(23, INPUT_PULLUP);
attachInterrupt(23, BacklightToggle, FALLING); attachInterrupt(23, BacklightToggle, FALLING);
} }
void loop() { void loop() {
if (backlightUpdate) { if (interruptFired) {
backlightState = !backlightState; if (millis() - lastInterrupt > interruptTimer || lastInterrupt == 0) {
backlightUpdate = false; backlightState = !backlightState;
Serial.printf("Setting backlight to %i \n", backlightState); Serial.printf("Setting backlight to %i \n", backlightState);
LCD.setBacklight(backlightState); LCD.setBacklight(backlightState);
} lastInterrupt = millis();
}
if (update_ival-- > 0) { interruptFired = false;
delay(1000); }
return;
}
update_ival = 5; //5sec if (millis() - lastUpdated > updateTimer || lastUpdated == 0) {
lastUpdated = millis();
} else {
return;
}
sensors_event_t humidity, temp; sensors_event_t humidity, temp;
aht.getEvent(&humidity, &temp); aht.getEvent(&humidity, &temp);
LCD.setCursor(0, 0); LCD.setCursor(0, 0);
LCD.print(temp.temperature, 1); LCD.print(temp.temperature, 1);
LCD.print(" C "); LCD.print(" C ");
LCD.setCursor(9, 0); LCD.setCursor(9, 0);
LCD.print(humidity.relative_humidity, 1); LCD.print(humidity.relative_humidity, 1);
LCD.print("%rH"); LCD.print("%rH");
if (millis() >= (cal_time * 60000) && !override) { if (millis() >= (cal_time * 60000) && !ready) {
LCD.setCursor(0, 1); LCD.setCursor(0, 1);
LCD.print(" Ready."); LCD.print(" Ready.");
override = true; ready = true;
} }
int co2 = myMHZ19.getCO2(false); int co2 = myMHZ19.getCO2(false);
if (myMHZ19.errorCode != RESULT_OK) { if (myMHZ19.errorCode != RESULT_OK) {
Serial.print("Error. Response Code: "); Serial.print("Error. Response Code: ");
Serial.println(myMHZ19.errorCode); Serial.println(myMHZ19.errorCode);
return; return;
} }
LCD.setCursor(0, 1); LCD.setCursor(0, 1);
LCD.print(co2); LCD.print(co2);
LCD.print("ppm "); LCD.print("ppm ");
if (co2 < 1000) if (co2 < 1000)
led(0, 1, 0); led(0, 1, 0);
else if (co2 < 1500) else if (co2 < 1500)
led(0, 0, 5); led(0, 0, 5);
else else
led(5, 0, 0); led(5, 0, 0);
if (millis() < (cal_time * 60000)) { if (millis() < (cal_time * 60000)) {
{ {
LCD.setCursor(8, 1); LCD.setCursor(8, 1);
LCD.printf("Cal..%2lum", ((cal_time * 60000) - millis()) / 60000); LCD.printf("Cal..%2lum", ((cal_time * 60000) - millis()) / 60000);
} }
} }
} }