// /*
// What is CLK, DIN,
//  CS pin on LED Dot Matrix 
//  like Max7219 8x32 ...
// CS is the chip select.
//  It tells the chip whether the incoming data is for that chip or not.
//   Din is the serial data bits being sent. 
// CLK is the serial clock that shifts the bits into the shift register*/



#include "LedControl.h"


// Define joystick pins
const int xAxisPin = A0;  // Connect joystick x-axis to A0
const int yAxisPin = A1;  // Connect joystick y-axis to A1

// Define LED dot matrix parameters
const int dataPin = 11;   // Connect to the DIN pin of the MAX7219 module
const int clockPin = 13;  // Connect to the CLK pin of the MAX7219 module
const int loadPin = 10;   // Connect to the CS pin of the MAX7219 module
const int numberOfDevices = 1;  // Number of MAX7219 devices

LedControl lc = LedControl(dataPin, clockPin, loadPin, numberOfDevices);

void setup() {
  Serial.begin(9600);
  lc.shutdown(0, false);  // Wake up the MAX7219
  lc.setIntensity(0, 8);  // Set the brightness level (adjust as needed)
  lc.clearDisplay(0);     // Clear the display
}

void loop() {
  // Read analog values from joystick
  int xValue = analogRead(xAxisPin);
  int yValue = analogRead(yAxisPin);

  // Determine joystick direction
  if (xValue > 800) {
    displayText("_");
  } else if (xValue < 200) {
    displayText("Left");
  } else if (yValue < 200) {
    displayText("Top");
  } else if (yValue > 800) {
    displayText("Bottom");
  } else {
    displayText("Neutral");
  }

  delay(100);  // Adjust delay based on your requirements
}

void displayText(const char *text) {
  lc.clearDisplay(0);  // Clear the display
  int textLength = strlen(text);

  // Display each character in the text
  for (int i = 0; i < textLength; ++i) {
    lc.setChar(0, i, text[i], false);
  }
}



































// #include <MD_Parola.h>
// #include <MD_MAX72xx.h>
// #include <SPI.h>

// // set to 1 if we are implementing the user interface pot, switch, etc
// #define USE_UI_CONTROL 0

// #if USE_UI_CONTROL
// #include <MD_UISwitch.h>
// #endif

// // Turn on debug statements to the serial output
// #define DEBUG 0

// #if DEBUG
// #define PRINT(s, x) { Serial.print(F(s)); Serial.print(x); }
// #define PRINTS(x) Serial.print(F(x))
// #define PRINTX(x) Serial.println(x, HEX)
// #else
// #define PRINT(s, x)
// #define PRINTS(x)
// #define PRINTX(x)
// #endif

// // Define the number of devices we have in the chain and the hardware interface
// // NOTE: These pin numbers will probably not work with your hardware and may
// // need to be adapted
// #define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
// #define MAX_DEVICES 8
// #define CLK_PIN   13
// #define DATA_PIN  11
// #define CS_PIN    10

// // HARDWARE SPI
// MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
// // SOFTWARE SPI
// //MD_Parola P = MD_Parola(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

// // Scrolling parameters
// #if USE_UI_CONTROL
// const uint8_t SPEED_IN = A5;
// const uint8_t DIRECTION_SET = 9;  // change the effect
// const uint8_t INVERT_SET = 8;     // change the invert

// const uint8_t SPEED_DEADBAND = 5;
// #endif // USE_UI_CONTROL

// uint8_t scrollSpeed = 50;    // default frame delay value
// textEffect_t scrollEffect = PA_SCROLL_LEFT;

// textPosition_t scrollAlign = PA_LEFT;
// uint16_t scrollPause = 1500; // in milliseconds

// // Global message buffers shared by Serial and Scrolling functions
// #define	BUF_SIZE 100
// char curMessage[BUF_SIZE] = { "IOT Course" };
// char newMessage[BUF_SIZE] = { "DTU" };


// bool newMessageAvailable = false;



// #if USE_UI_CONTROL

// MD_UISwitch_Digital uiDirection(DIRECTION_SET);
// MD_UISwitch_Digital uiInvert(INVERT_SET);

// void doUI(void)
// {
//   // set the speed if it has changed
//   {
//     int16_t speed = map(analogRead(SPEED_IN), 0, 1023, 10, 150);

//     if ((speed >= ((int16_t)P.getSpeed() + SPEED_DEADBAND)) ||
//       (speed <= ((int16_t)P.getSpeed() - SPEED_DEADBAND)))
//     {
//       P.setSpeed(speed);
//       scrollSpeed = speed;
//       PRINT("\nChanged speed to ", P.getSpeed());
//     }
//   }

//   if (uiDirection.read() == MD_UISwitch::KEY_PRESS) // SCROLL DIRECTION
//   {
//     PRINTS("\nChanging scroll direction");
//     scrollEffect = (scrollEffect == PA_SCROLL_LEFT ? PA_SCROLL_RIGHT : PA_SCROLL_LEFT);
//     P.setTextEffect(scrollEffect, scrollEffect);
//     P.displayClear();
//     P.displayReset();
//   }

//   if (uiInvert.read() == MD_UISwitch::KEY_PRESS)  // INVERT MODE
//   {
//     PRINTS("\nChanging invert mode");
//     P.setInvert(!P.getInvert());
//   }
// }
// #endif // USE_UI_CONTROL

// void readSerial(void)
// {
//   static char *cp = newMessage;

//   while (Serial.available())
//   {
//     *cp = (char)Serial.read();
//     if ((*cp == '\n') || (cp - newMessage >= BUF_SIZE-2)) // end of message character or full buffer
//     {
//       *cp = '\0'; // end the string
//       // restart the index for next filling spree and flag we have a message waiting
//       cp = newMessage;
//       newMessageAvailable = true;
//     }
//     else  // move char pointer to next position
//       cp++;
//   }
// }

// void setup()
// {
//   Serial.begin(57600);
//   Serial.print("\n[Parola Scrolling Display]\nType a message for the scrolling display\nEnd message line with a newline");

// #if USE_UI_CONTROL
//   uiDirection.begin();
//   uiInvert.begin();
//   pinMode(SPEED_IN, INPUT);

//   doUI();
// #endif // USE_UI_CONTROL

//   P.begin();
//   P.displayText(curMessage, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);
// }

// void loop()
// {
// #if USE_UI_CONTROL
//   doUI();
// #endif // USE_UI_CONTROL

//   if (P.displayAnimate())
//   {
//     if (newMessageAvailable)
//     {
//       strcpy(curMessage, newMessage);
//       newMessageAvailable = false;
//     }
//     P.displayReset();
    
//   }
//   readSerial();
// }