#include <LiquidCrystal_I2C.h>
LiquidCrystal_I2C lcd(0x27, 16, 2);
#define CLK 25
#define DT 33
#define SW 32
int currentStateCLK;
int lastStateCLK;
unsigned long lastButtonPress = 0;
int leds[] = { 13, 12, 14, 27 };
unsigned int menu = 0;
int ledStatus[5] = { 0 };
int timer = 1000;
void setup() {
Serial.begin(115200);
lcd.init();
lcd.backlight();
lcd.clear();
pinMode(CLK, INPUT);
pinMode(DT, INPUT);
pinMode(SW, INPUT_PULLUP);
for (int i = 0; i < 4; i++) {
pinMode(leds[i], OUTPUT);
}
menu = 0;
updateMenu();
}
void loop() {
currentStateCLK = digitalRead(CLK);
if (currentStateCLK != lastStateCLK && currentStateCLK == 1) {
if (digitalRead(DT) != currentStateCLK) {
menu--;
updateMenu();
} else {
menu++;
updateMenu();
}
}
lastStateCLK = currentStateCLK;
int btnState = digitalRead(SW);
if (btnState == LOW) {
if (millis() - lastButtonPress > 50) {
executeAction();
updateMenu();
}
lastButtonPress = millis();
}
delay(1);
}
void printlcd() {
lcd.clear();
lcd.setCursor(1, 0);
lcd.print("LED Controller");
lcd.setCursor(0, 1);
}
void updateMenu() {
switch (menu) {
case 0:
menu = 0;
break;
case 1:
printlcd();
lcd.print(" Led 1>");
break;
case 2:
printlcd();
lcd.print(" <Led 2>");
break;
case 3:
printlcd();
lcd.print(" <Led 3>");
break;
case 4:
printlcd();
lcd.print(" <Led 4");
break;
case 5:
menu = 4;
break;
}
}
void executeAction() {
switch (menu) {
case 1:
action1();
break;
case 2:
action2();
break;
case 3:
action3();
break;
case 4:
action4();
break;
}
}
void action1() {
if (ledStatus[menu] != 0) {
ledStatus[menu] = 0;
lcd.clear();
lcd.print("> LED 1 OFF...");
digitalWrite(leds[menu - 1], ledStatus[menu]);
delay(timer);
} else {
ledStatus[menu] = 1;
lcd.clear();
lcd.print("> LED 1 ON...");
digitalWrite(leds[menu - 1], ledStatus[menu]);
delay(timer);
}
}
void action2() {
if (ledStatus[menu] != 0) {
ledStatus[menu] = 0;
lcd.clear();
lcd.print("> LED 2 OFF...");
digitalWrite(leds[menu - 1], ledStatus[menu]);
delay(timer);
} else {
ledStatus[menu] = 1;
lcd.clear();
lcd.print("> LED 2 ON...");
digitalWrite(leds[menu - 1], ledStatus[menu]);
delay(timer);
}
}
void action3() {
if (ledStatus[menu] != 0) {
ledStatus[menu] = 0;
lcd.clear();
lcd.print("> LED 3 OFF...");
digitalWrite(leds[menu - 1], ledStatus[menu]);
delay(timer);
} else {
ledStatus[menu] = 1;
lcd.clear();
lcd.print("> LED 3 ON...");
digitalWrite(leds[menu - 1], ledStatus[menu]);
delay(timer);
}
}
void action4() {
if (ledStatus[menu] != 0) {
ledStatus[menu] = 0;
lcd.clear();
lcd.print("> LED 4 OFF...");
digitalWrite(leds[menu - 1], ledStatus[menu]);
delay(timer);
} else {
ledStatus[menu] = 1;
lcd.clear();
lcd.print("> LED 4 ON...");
digitalWrite(leds[menu - 1], ledStatus[menu]);
delay(timer);
}
}