478 lines
8.9 KiB
C++
478 lines
8.9 KiB
C++
#include <Adafruit_CCS811.h>
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#include <LiquidCrystal.h>
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#include <Adafruit_HTU21DF.h>
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int lcd_key = 0;
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int adc_key_in = 0;
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float tempUpHold = 44.5;
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float tempDownHold = -10.5;
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float humiUpHold = 95.0;
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float humiDownHold = 10.0;
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int gasUpHold = 9000;
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int gasDownHold = 0;
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#define btnRIGHT 0
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#define btnUP 1
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#define btnDOWN 2
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#define btnLEFT 3
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#define btnSELECT 4
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#define btnNONE 5
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LiquidCrystal lcd(8, 9, 4, 5, 6, 7); // lcd init
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Adafruit_HTU21DF htu = Adafruit_HTU21DF(); // htu21d init
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Adafruit_CCS811 ccs; // ccs811 init
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// button handle method
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int read_LCD_buttons() {
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adc_key_in = analogRead(0); // read value from the sensor
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// threshold manually adjusted
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if (adc_key_in > 1000) return btnNONE;
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if (adc_key_in < 50) return btnRIGHT;
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if (adc_key_in < 250) return btnUP;
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if (adc_key_in < 300) return btnDOWN;
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if (adc_key_in < 500) return btnLEFT;
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if (adc_key_in < 850) return btnSELECT;
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return btnNONE;
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}
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void setup() {
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Serial.begin(9600);
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if (!ccs.begin()) {
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while (1);
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}
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// gas sensor init
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while (!ccs.available());
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ccs.begin();
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// htu init
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htu.begin();
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// lcd init (16x2)
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lcd.begin(16, 2);
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// splash screen
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lcd.print(" METEO STATION ");
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lcd.setCursor(0, 1);
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lcd.print(" v1.0.0 Welcome ");
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delay(2000);
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lcd.clear();
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Serial.println("Ready");
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}
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int selectedMenu = 0;
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bool selectedOption = false; // because the display is only 16x2 I can get away
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// with using just a bool variable
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bool splashShown = false;
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bool clearScreen = false;
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bool exitSettings = false;
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String typeAlert = " ";
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bool tempAlert = false;
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bool humiAlert = false;
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bool gasAlert = false;
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bool alertOverride = false;
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int alertStart = 0;
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int alertLength = 10;
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void readButtons() {
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lcd_key = read_LCD_buttons(); // read the buttons
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switch (lcd_key) { // depending on which button was pushed, we perform an action
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case btnRIGHT: {
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if (gasAlert) {
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gasAlert = false;
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alertOverride = true;
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alertStart = millis() / 1000;
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}
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if (humiAlert) {
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humiAlert = false;
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alertOverride = true;
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alertStart = millis() / 1000;
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}
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if (tempAlert) {
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tempAlert = false;
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alertOverride = true;
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alertStart = millis() / 1000;
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}
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switch (selectedMenu) {
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case 0: {
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break;
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}
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case 1: {
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if (selectedOption) {
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tempDownHold += 0.5;
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} else {
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tempUpHold += 0.5;
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}
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break;
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}
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case 2: {
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if (selectedOption) {
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humiDownHold += 0.5;
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} else {
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humiUpHold += 0.5;
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}
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break;
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}
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case 3: {
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if (selectedOption) {
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gasDownHold += 1;
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} else {
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gasUpHold += 1;
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}
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break;
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}
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case 4: {
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if (!selectedOption) {
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exitSettings = true;
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}
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break;
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}
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}
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break;
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}
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case btnLEFT: {
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switch (selectedMenu) {
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case 0: {
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break;
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}
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case 1: {
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if (selectedOption) {
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tempDownHold -= 0.5;
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} else {
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tempUpHold -= 0.5;
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}
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break;
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}
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case 2: {
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if (selectedOption) {
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humiDownHold -= 0.5;
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} else {
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humiUpHold -= 0.5;
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}
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break;
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}
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case 3: {
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if (selectedOption) {
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gasDownHold -= 1;
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} else {
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gasUpHold -= 1;
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}
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break;
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}
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case 4: {
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if (!selectedOption) {
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exitSettings = false;
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}
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break;
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}
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}
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break;
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}
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case btnUP: {
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switch (selectedMenu) {
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case 0: {
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break;
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}
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case 1: {
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if (selectedOption) {
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selectedOption = false;
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} else {
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selectedOption = true;
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}
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break;
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}
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case 2: {
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if (selectedOption) {
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selectedOption = false;
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} else {
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selectedOption = true;
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}
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break;
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}
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case 3: {
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if (selectedOption) {
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selectedOption = false;
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} else {
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selectedOption = true;
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}
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break;
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}
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case 4: {
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selectedOption = false;
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break;
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}
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}
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break;
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}
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case btnDOWN: {
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switch (selectedMenu) {
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case 0: {
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break;
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}
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case 1: {
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if (selectedOption) {
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selectedOption = false;
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} else {
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selectedOption = true;
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}
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break;
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}
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case 2: {
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if (selectedOption) {
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selectedOption = false;
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} else {
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selectedOption = true;
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}
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break;
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}
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case 3: {
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if (selectedOption) {
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selectedOption = false;
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} else {
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selectedOption = true;
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}
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break;
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}
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case 4: {
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selectedOption = false;
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break;
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}
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}
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break;
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}
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case btnSELECT: {
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switch (selectedMenu) {
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case 0: {
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selectedMenu = 1;
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splashShown = false;
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break;
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}
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case 1: {
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selectedMenu = 2;
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splashShown = false;
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break;
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}
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case 2: {
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selectedMenu = 3;
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splashShown = false;
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break;
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}
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case 3: {
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selectedMenu = 4;
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splashShown = false;
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break;
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}
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case 4: {
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selectedMenu = 0;
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splashShown = false;
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clearScreen = true;
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break;
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}
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}
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break;
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}
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case btnNONE: {
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break;
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}
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}
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}
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void selectionShow() {
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lcd.setCursor(0, 0);
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if (!selectedOption) {
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lcd.print('>');
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} else {
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lcd.print(" ");
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}
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lcd.setCursor(0, 1);
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if (selectedOption) {
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lcd.print('>');
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} else {
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lcd.print(" ");
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}
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}
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void status1() {
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// gas sensor print
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if (!ccs.readData()) {
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lcd.setCursor(0, 0);
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lcd.print(ccs.geteCO2());
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lcd.print("ppm");
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lcd.setCursor(10, 0);
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lcd.print(ccs.getTVOC());
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}
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float h = htu.readHumidity();
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// Read temperature as Celsius
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float t = htu.readTemperature();
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lcd.setCursor(0, 1);
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lcd.print(t, 1);
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lcd.print(char(223));
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lcd.print('C');
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lcd.setCursor(10, 1);
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lcd.print(h, 1);
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lcd.print("%");
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}
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void alertChecker() {
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if (ccs.geteCO2() > gasUpHold || ccs.geteCO2() < gasDownHold) {
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gasAlert = true;
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typeAlert += "Gas ";
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}
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if (htu.readHumidity() > humiUpHold || htu.readHumidity() < humiDownHold) {
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humiAlert = true;
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typeAlert += "Hum. ";
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}
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if (htu.readTemperature() > tempUpHold || htu.readTemperature() < tempDownHold) {
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tempAlert = true;
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typeAlert += "Temp. ";
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}
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if (alertOverride && alertStart + alertLength == millis() / 1000) {
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alertOverride = false;
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alertStart = 0;
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typeAlert = " ";
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}
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}
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void alert() {
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lcd.setCursor(0, 0);
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lcd.print(typeAlert);
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lcd.setCursor(0, 1);
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lcd.print("Alert! > to clr");
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}
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void settings1() {
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selectionShow();
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lcd.setCursor(1, 0);
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lcd.print("T" + String(char(223)) + " UP ");
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lcd.print(tempUpHold, 1);
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lcd.print(String(char(223)) + "C");
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lcd.setCursor(1, 1);
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lcd.print("T" + String(char(223)) + " DOWN ");
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lcd.print(tempDownHold, 1);
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lcd.print(String(char(223)) + "C");
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delay(150);
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}
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void settings2() {
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selectionShow();
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lcd.setCursor(1, 0);
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lcd.print("H% UP ");
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lcd.print(humiUpHold, 1);
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lcd.setCursor(1, 1);
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lcd.print("H% DOWN ");
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lcd.print(humiDownHold, 1);
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delay(150);
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}
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void settings3() {
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selectionShow();
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lcd.setCursor(1, 0);
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lcd.print("Gas UP ");
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lcd.print(gasUpHold, 1);
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lcd.setCursor(1, 1);
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lcd.print("Gas DOWN ");
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lcd.print(gasDownHold, 1);
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delay(150);
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}
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void settings4() {
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selectionShow();
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lcd.setCursor(0, 0);
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lcd.print("Exit? ");
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/*
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if (exitSettings) {
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lcd.print("YES");
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}
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else {
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lcd.print("NO");
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}
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*/
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lcd.setCursor(1, 1);
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lcd.print("Press > to exit");
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clearScreen = true;
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delay(150);
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}
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void loop() {
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readButtons();
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alertChecker();
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if (exitSettings) {
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selectedMenu = 0;
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exitSettings = false;
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}
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if ((gasAlert || tempAlert || humiAlert) && !alertOverride) {
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alert();
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clearScreen = true;
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typeAlert = "";
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} else {
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switch (selectedMenu) {
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case 0: {
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if (clearScreen) {
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lcd.clear();
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clearScreen = false;
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}
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if ((millis() / 1000) % 4 == 0) {
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status1();
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}
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break;
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}
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case 1: {
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if (!splashShown) {
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("Temperature");
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lcd.setCursor(0, 1);
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lcd.print("settings");
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delay(1000);
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lcd.clear();
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splashShown = true;
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}
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settings1();
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break;
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}
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case 2: {
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if (!splashShown) {
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("Humidity");
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lcd.setCursor(0, 1);
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lcd.print("settings");
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delay(1000);
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lcd.clear();
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splashShown = true;
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}
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settings2();
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break;
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}
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case 3: {
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if (!splashShown) {
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lcd.clear();
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lcd.setCursor(0, 0);
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lcd.print("Gas");
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lcd.setCursor(0, 1);
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lcd.print("settings");
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delay(1000);
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lcd.clear();
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splashShown = true;
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}
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settings3();
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break;
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}
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case 4: {
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if (!splashShown) {
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lcd.clear();
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splashShown = true;
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selectedOption = false;
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}
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settings4();
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break;
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}
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}
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}
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}
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