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Dimitar Byalkov
2021-04-13 12:27:39 +03:00
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commit 07c6cc0cb9
1 changed files with 356 additions and 0 deletions
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meteo.ino Normal file
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#include <Adafruit_CCS811.h>
#include <LiquidCrystal.h>
#include <Adafruit_HTU21DF.h>
int lcd_key = 0;
int adc_key_in = 0;
float tempUpHold = 20.5;
float tempDownHold = -10.5;
float humiUpHold = 95.0;
float humiDownHold = 10.0;
int gasTreshold = 800;
#define btnRIGHT 0
#define btnUP 1
#define btnDOWN 2
#define btnLEFT 3
#define btnSELECT 4
#define btnNONE 5
LiquidCrystal lcd(8, 9, 4, 5, 6, 7); // lcd init
Adafruit_HTU21DF htu = Adafruit_HTU21DF(); // htu21d init
Adafruit_CCS811 ccs; // ccs811 init
// button handle method
int read_LCD_buttons() {
adc_key_in = analogRead(0); // read value from the sensor
// threshold manually adjusted
if (adc_key_in > 1000) return btnNONE;
if (adc_key_in < 50) return btnRIGHT;
if (adc_key_in < 250) return btnUP;
if (adc_key_in < 300) return btnDOWN;
if (adc_key_in < 500) return btnLEFT;
if (adc_key_in < 850) return btnSELECT;
return btnNONE;
}
void setup() {
Serial.begin(9600);
if (!ccs.begin()) {
while (1);
}
// gas sensor init
while (!ccs.available());
ccs.begin();
// htu init
htu.begin();
// lcd init (16x2)
lcd.begin(16, 2);
// splash screen
lcd.print(" METEO STATION ");
lcd.setCursor(0, 1);
lcd.print(" v0.0.4 Welcome ");
delay(2000);
lcd.clear();
Serial.println("Ready");
}
int selectedMenu = 0;
bool selectedOption = false; // because the display is only 16x2 I can get away
// with using just a bool variable
bool splashShown = false;
bool clearScreen = false;
bool exitSettings = false;
void readButtons() {
lcd_key = read_LCD_buttons(); // read the buttons
switch (lcd_key) { // depending on which button was pushed, we perform an action
case btnRIGHT: {
switch (selectedMenu) {
case 0: {
break;
}
case 1: {
if (selectedOption) {
tempDownHold += 0.5;
} else {
tempUpHold += 0.5;
}
break;
}
case 2: {
if (selectedOption) {
humiDownHold += 0.5;
} else {
humiUpHold += 0.5;
}
break;
}
case 3: {
if (!selectedOption) {
exitSettings = true;
}
break;
}
}
break;
}
case btnLEFT: {
switch (selectedMenu) {
case 0: {
break;
}
case 1: {
if (selectedOption) {
tempDownHold -= 0.5;
} else {
tempUpHold -= 0.5;
}
break;
}
case 2: {
if (selectedOption) {
humiDownHold -= 0.5;
} else {
humiUpHold -= 0.5;
}
break;
}
case 3: {
if (!selectedOption) {
exitSettings = false;
}
break;
}
}
break;
}
case btnUP: {
switch (selectedMenu) {
case 0: {
break;
}
case 1: {
if (selectedOption) {
selectedOption = false;
} else {
selectedOption = true;
}
break;
}
case 2: {
if (selectedOption) {
selectedOption = false;
} else {
selectedOption = true;
}
break;
}
case 3: {
selectedOption = false;
break;
}
}
break;
}
case btnDOWN: {
switch (selectedMenu) {
case 0: {
break;
}
case 1: {
if (selectedOption) {
selectedOption = false;
} else {
selectedOption = true;
}
break;
}
case 2: {
if (selectedOption) {
selectedOption = false;
} else {
selectedOption = true;
}
break;
}
case 3: {
selectedOption = false;
break;
}
}
break;
}
case btnSELECT: {
switch (selectedMenu) {
case 0: {
selectedMenu = 1;
splashShown = false;
break;
}
case 1: {
selectedMenu = 2;
splashShown = false;
break;
}
case 2: {
selectedMenu = 3;
splashShown = false;
break;
}
case 3: {
selectedMenu = 0;
splashShown = false;
clearScreen = true;
break;
}
}
break;
}
case btnNONE: {
break;
}
}
}
void selectionShow() {
lcd.setCursor(0, 0);
if (!selectedOption) {
lcd.print('>');
} else {
lcd.print(" ");
}
lcd.setCursor(0, 1);
if (selectedOption) {
lcd.print('>');
} else {
lcd.print(" ");
}
}
void status1() {
// gas sensor print
if (ccs.available()) {
if (!ccs.readData()) {
lcd.setCursor(0, 0);
lcd.print(ccs.geteCO2());
lcd.print("ppm");
lcd.setCursor(10, 0);
lcd.print(ccs.getTVOC());
}
}
float h = htu.readHumidity();
// Read temperature as Celsius
float t = htu.readTemperature();
lcd.setCursor(0, 1);
lcd.print(t, 1);
lcd.print(char(223));
lcd.print('C');
lcd.setCursor(10, 1);
lcd.print(h, 1);
lcd.print("%");
}
void settings1() {
selectionShow();
lcd.setCursor(1, 0);
lcd.print("T" + String(char(223)) + " UP ");
lcd.print(tempUpHold, 1);
lcd.print(String(char(223)) + "C");
lcd.setCursor(1, 1);
lcd.print("T" + String(char(223)) + " DOWN ");
lcd.print(tempDownHold, 1);
lcd.print(String(char(223)) + "C");
delay(150);
}
void settings2() {
selectionShow();
lcd.setCursor(1, 0);
lcd.print("H% UP ");
lcd.print(humiUpHold, 1);
lcd.setCursor(1, 1);
lcd.print("H% DOWN ");
lcd.print(humiDownHold, 1);
delay(150);
}
void settings3() {
selectionShow();
lcd.setCursor(0, 0);
lcd.print("Exit? ");
if (exitSettings) {
lcd.print("YES");
}
else {
lcd.print("NO");
}
lcd.setCursor(1, 1);
lcd.print("Press > to exit");
clearScreen = true;
delay(150);
}
void loop() {
readButtons();
if (exitSettings) {
selectedMenu = 0;
exitSettings = false;
}
switch (selectedMenu) {
case 0: {
if (clearScreen) {
lcd.clear();
clearScreen = false;
}
if ((millis() / 1000) % 4 == 0) {
status1();
}
break;
}
case 1: {
if (!splashShown) {
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Temperature");
lcd.setCursor(0, 1);
lcd.print("settings");
delay(1000);
lcd.clear();
splashShown = true;
}
settings1();
break;
}
case 2: {
if (!splashShown) {
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Humidity");
lcd.setCursor(0, 1);
lcd.print("settings");
delay(1000);
lcd.clear();
splashShown = true;
}
settings2();
break;
}
case 3: {
if (!splashShown) {
lcd.clear();
splashShown = true;
}
settings3();
break;
}
}
}