#include <Wire.h>
#include <hd44780.h> // main hd44780 header
#include <hd44780ioClass/hd44780_I2Cexp.h> // i2c expander i/o class header
hd44780_I2Cexp lcd; // declare lcd object: auto locate & config exapander chip
// LCD geometry
const int LCD_COLS = 16;
const int LCD_ROWS = 2;
#include <Keypad.h>
const byte ROWS = 4; //four rows
const byte COLS = 4; //three columns
char keys[ROWS][COLS] =
{
{'1', '2', '3', 'A'},
{'4', '5', '6', 'B'},
{'7', '8', '9', 'C'},
{'*', '0', '#', 'D'}
};
byte rowPins[ROWS] = {6, 7, 8, 9}; //connect to the row pinouts of the keypad
byte colPins[COLS] = {5, 4, 12, 11}; //connect to the column pinouts of the keypad
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
bool a = true;
const unsigned long LongPress = 300;
bool j = true;
void setup()
{
Serial.begin(115200);
lcd.begin(LCD_COLS, LCD_ROWS);
lcd.setCursor(3, 0);
lcd.print(" PRIYA");
lcd.setCursor(3, 1);
lcd.print("ELECTRONICS");
delay(100);
for (int positionCounter = 0; positionCounter < 40; positionCounter++)
{
lcd.scrollDisplayLeft();
delay(120);
}
delay(800);
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Set Count:");
}
void SetCount()
{
const byte entryMaxSize = 5;
static char digits[entryMaxSize + 1];
static byte x; // index
char key = keypad.getKey();
if (key != NO_KEY) // Check for a valid key.
{
switch (key)
{
case 'A':
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Set Count:");
x = 0; // reset the counter
a = true;
break;
case 'D':
if (a)
{
if (x == 0)
{
invalidCount();
}
else
{
lcd.clear();
lcd.print("Count Set:");
for (byte i = 0; i < x; i++)
{
lcd.print(digits[i]);
a = false;
}
unsigned long count = atol(digits);
Serial.print(count);
}
}
break;
default:
if (a)
{
// if not 5 characters yet
if (x < entryMaxSize)
{
// add key to userinput array and increment counter
if ( key >= '0' && key <= '9' ) // key is of type char and has a value between 0 and 9 so do something with it.
{
digits[x++] = key;
digits[x] = '\0';
lcd.print( key ) ; // new print statement <<<<<<<<<<<<<<<<
//total = ((count[ 0 ] - '0') * 10000UL + (count[ 1 ] - '0') * 1000 + (count[ 2 ] - '0') * 100 + (count[3] - '0') * 10 + (count[4] - '0'));
}
}
else
{
countWarning();
}
}
break;
}
}
}
void invalidCount()
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Invalid Count!!");
lcd.setCursor(0, 1);
lcd.print("Press A"); // suggesting the user to enter the count again
a = false;
}
void countWarning()
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("5 Digits Only!!"); // warning for the user if more than permitted digits are entered
lcd.setCursor(0, 1);
lcd.print("Press A"); // suggesting the user to enter the count again
a = false;
}
void loop()
{
if (keypad.getKeys()) // check for keypad activity
{
// we won't handle multiple keypresses, just single ones, so just key index 0
const byte key = keypad.key[0].kchar;
const byte state = keypad.key[0].kstate; // IDLE, PRESSED, HOLD, RELEASED
switch (key)
{
case '#':
{
static unsigned long pressedTime; // static so the value is remembered like a global
if (state == PRESSED)
{
pressedTime = millis();
}
else if (state == RELEASED)
{
if (millis() - pressedTime > LongPress)
{
handleLongPress();
}
else
{
handleShortPress();
}
}
}
break;
case 'D':
{
if (!j)
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Timer Mode Set!");
}
else
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Sensor Mode Set!");
}
}
break;
}
}
}
void handleShortPress()
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Mode:");
lcd.setCursor(5, 0);
lcd.print("TimerBased");
j = false;
//Serial.println("short");
}
void handleLongPress()
{
lcd.clear();
lcd.setCursor(0, 0);
lcd.print("Mode:");
lcd.setCursor(5, 0);
lcd.print("SensorBased");
j = true;
//Serial.println("long");
}
I'm not able to set the count by entering the digits, the 'A' key is not working. The '#' key allows me to set the modes. The enter key 'D' displays the mode to be set. Nothing from the void SetCount is working.
