oliver-keypad-thing/keypad/keypad.ino

#include <Arduino.h>

// Define pin mappings for the switch matrix
const int switchRowPins[] = {50, 48, 46, 44}; // Switch Rows
const int switchColPins[] = {40, 38, 36, 34, 32, 30, 28, 26, 24, 22}; // Switch Columns

// Define the pin arrays for the LED matrix
const int LEDRowPins[] = {51, 49, 47, 45}; // LED Rows (Anodes)
const int LEDColPins[] = {41, 39, 37, 35, 33, 31, 29, 27, 25, 23}; // LED Columns (Cathodes)

const int NUM_SLIDERS = 6;
const int analogInputs[NUM_SLIDERS] = {A2, A3, A4, A5, A7, A9};

#define ROWS 4
#define COLS 10
int keyState[ROWS][COLS] = {0}; // Holds the state of each key

// State definitions for key states
#define NONE 0
#define PRESSED 1
#define HELD 2

bool buttonBuffer[ROWS][COLS] = {
  {false, false, false, false, false, false, false, false, false, false},
  {false, false, false, false, false, false, false, false, false, false},
  {false, false, false, false, false, false, false, false, false, false},
  {false, false, false, false, false, false, false, false, false, false}
};

bool litButtons[ROWS][COLS] = {
  {false, false, false, false, false, false, false, false, false, false},
  {false, false, false, false, false, false, false, false, false, false},
  {false, false, false, false, false, false, false, false, false, false},
  {false, false, false, false, false, false, false, false, false, false}
};


void setup() {
    Serial.begin(9600);
    for (int pin : switchRowPins) {
        pinMode(pin, OUTPUT);
        digitalWrite(pin, HIGH);
    }
    for (int pin : switchColPins) {
        pinMode(pin, INPUT_PULLUP);
    }
    for (int pin : LEDRowPins) {
        pinMode(pin, OUTPUT);
        digitalWrite(pin, LOW);
    }
    for (int pin : LEDColPins) {
        pinMode(pin, OUTPUT);
        digitalWrite(pin, HIGH);
    }
    for (int i = 0; i < NUM_SLIDERS; i++) {
      pinMode(analogInputs[i], INPUT);
    }

    // for(int y = 0; y < litButtons.length; y++){
    //   for(int x = 0; x < litButtons[y].length; x++){
    //     litButtons
    //   }
    // }
}

// bool arrayIsFalse(bool arr[]){
//   for(bool b : arr){
//     if(!b){return false;}
//   }
//   return true;
// }

// bool array2dIsFalse(bool arr[][]){
//   for(bool b[] : arr){
//     if(!arrayIsFalse(b)){return false;}
//   }
//   return true;
// }

void updateLights(){

  // Find next enabled light
  // while(true){
    for (int row = 0; row < ROWS; row++) {

        digitalWrite(LEDRowPins[row], HIGH);  // Activate row
        for (int col = 0; col < COLS; col++) {
            if (buttonBuffer[row][col]) {

              // Serial.print(row);
              // Serial.print(", ");
              // Serial.println(col);
              
              digitalWrite(LEDColPins[col], LOW);
              delay(1);
              digitalWrite(LEDColPins[col], HIGH);
              
                // digitalWrite(LEDRowPins[row], HIGH);
                // digitalWrite(LEDColPins[col], LOW);
                // Serial.print("Button pressed at row ");
                // Serial.print(row);
                // Serial.print(", col ");
                // Serial.println(col);
                // delay(1000);  // Keep the LED on for a second
                // digitalWrite(LEDRowPins[row], LOW);
                // digitalWrite(LEDColPins[col], HIGH);
            }
        }
      // for(int col = 0; col < COLS; col++){
      //   digitalWrite(LEDColPins[col], HIGH);
      // }
      
      digitalWrite(LEDRowPins[row], LOW);  // Deactivate row
    }
  // }

}

void loop() {
  updateLights();

    for (int row = 0; row < ROWS; row++) {
        digitalWrite(switchRowPins[row], LOW);  // Activate row
        for (int col = 0; col < COLS; col++) {
            if (digitalRead(switchColPins[col]) == LOW) {
                // digitalWrite(LEDRowPins[row], HIGH);
                // digitalWrite(LEDColPins[col], LOW);

                litButtons[row][col] = true;

                // delay(1000);  // Keep the LED on for a second
                // digitalWrite(LEDRowPins[row], LOW);
                // digitalWrite(LEDColPins[col], HIGH);
            }
        }
        digitalWrite(switchRowPins[row], HIGH);  // Deactivate row
    }
}

// #include <Arduino.h>


// void setup() {
//   //Test serial out
//   Serial.begin(115200);
//   delay(10000);
//   Serial.print("Test");
// }

// void loop() {
// }