analog_buttons2

//*************************************************************************
//  Name     : analog_buttons2                                            *
//  Author   : Tarilayefa Edward                                          *
//  Notice   : Tari Electronics & Embedded Systems (TEES), 2018.          *
//           : tarielectronics@yahoo.com                                  *
//           : tarielect.edward@gmail.com                                 *
//           : +23408184754883,+23408062251186, Nigeria.                  *
//           : https//:web.facebook.com/groups/teestraining/              *
//           : https//:web.facebook.com/groups/picarduino/                *
//  Date     : 17/07/2018                                                 *
//  Version  : 1.0                                                        *
//  Notes    : A program to use 6 push buttons on one analog input pin.   *
//           : Each analog push button toggles an arduino pin, displays   *
//           : the analog value on serial monitor & lcd.                  *
//  Reference: xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx         *
//  Compiler : avrgcc                                                     *
//  IDE      : Arduino 1.8.5                                              *
//  Target   : Atmega 328, Arduino Uno, Nano.                             *
//*************************************************************************
# include <LiquidCrystal.h>
LiquidCrystal lcd(7,6,5,4,3,2); //(data,clk)
//-----------------------------------------------------------------------
int analogIn = A0;
int t1 = 100; //initialize debounce value
//-----------------------------------------------------------------------
int led1 = 8; //led1 pin
int led2 = 9;
int led3 = 10;
int led4 = 11;
int led5 = 12;
int led6 = 13;
//-----------------------------------------------------------------------
int pins[6] = {8,9,10,11,12,13}; //led pins
//-----------------------------------------------------------------------
int analogVal;  //adc variable
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
void setup() //setup function
{
    for (int x = 0; x < 6; x++){
        pinMode(pins[x], 1); //set pins to output mode
    }
    for (int y = 0; y <6; y++){
        digitalWrite(pins[y], 0); //turn off pins
    }
    lcd.begin(16,2); //initialize a 16x2 char lcd
    lcd.clear(); //clear lcd
    delay(100); //wait for 100ms
    lcd.print("Analog Buttons2 ");
    Serial.begin(9600); //initialize serial communication
    Serial.println("Analog Buttons2");
    delay(2000);
}
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
void loop() //main loop function
{
    analogButtons();
}
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
void analogButtons(){ //analog button function
    //-----------------------------------------------------------------------
    analogVal = analogRead(A0);//get the analog value
    //-----------------------------------------------------------------------
    lcd.setCursor(0,1);
    lcd.print("A0=");
    lcd.print(analogVal);
    lcd.print("  ");
    Serial.print("Analog value = ");
    Serial.println(analogVal);
    //------------------------------------------------------------------
    //Ranges of analog value if button is pressed
    if ((analogVal >= 0) && (analogVal < 200)){ //if btn1 pressed
        delay(t1); //analog button debounce
        if ((analogVal >= 0) && (analogVal < 20)){ //if btn1 still pressed
            delay(t1); //analog button debounce
            Serial.println("Analog btn1 pressed");
            digitalWrite(led1, !digitalRead(led1)); //toggle pin
            lcd.setCursor(8,1);
            lcd.print("btn1");
            lcd.print("     ");
        }
    }
    //------------------------------------------------------------------
    if ((analogVal >= 200) && (analogVal < 400)){ //if btn2 pressed
        delay(t1);
        if ((analogVal >= 200) && (analogVal < 400)){//if btn2 still pressed
            delay(t1);
            Serial.println("Analog btn2 pressed");
            digitalWrite(led2, !digitalRead(led2));
            lcd.setCursor(8,1);
            lcd.print("btn2");
            lcd.print("     ");
        }
    }
    //-------------------------------------------------------------
    if ((analogVal >= 400) && (analogVal < 460)){ //if btn3 pressed
        delay(t1);
        if ((analogVal >= 400) && (analogVal < 460)){//if btn3 still pressed
            delay(t1);
            Serial.println("Analog btn3 pressed");
            digitalWrite(led3, !digitalRead(led3));
            lcd.setCursor(8,1);
            lcd.print("btn3");
            lcd.print("     ");
        }
    }
    //-------------------------------------------------------------
    if ((analogVal >= 460) && (analogVal < 480)){ //if btn4 pressed
        delay(t1);
        if ((analogVal >= 460) && (analogVal < 480)){//if btn4 still pressed
            delay(t1);
            Serial.println("Analog btn4 pressed");
            digitalWrite(led4, !digitalRead(led4));
            lcd.setCursor(8,1);
            lcd.print("btn4");
            lcd.print("     ");
        }
    }
    //-------------------------------------------------------------
    if ((analogVal >= 480) && (analogVal < 500)){ //if btn5 pressed
        delay(t1);
        if ((analogVal >= 480) && (analogVal < 500)){//if btn5 still pressed
            delay(t1);
            Serial.println("Analog btn5 pressed");
            digitalWrite(led5, !digitalRead(led5));
            lcd.setCursor(8,1);
            lcd.print("btn5");
            lcd.print("     ");
        }
    }
    //-------------------------------------------------------------
    if ((analogVal >= 500) && (analogVal < 530)){ //if btn6 pressed
        delay(t1);
        if ((analogVal >= 500) && (analogVal < 530)){//if btn6 still pressed
            delay(t1);
            Serial.println("Analog btn6 pressed");
            digitalWrite(led6, !digitalRead(led6));
            lcd.setCursor(8,1);
            lcd.print("btn6");
            lcd.print("     ");
        }
    }
    //-------------------------------------------------------------
    //delay(200);
}
//-------------------------------------------------------------