#include <MD_Parola.h>
#include <MD_MAX72xx.h>
#include <SPI.h>
#define USE_UI_CONTROL 0
#if USE_UI_CONTROL
#include <MD_UISwitch.h>
#endif
#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 HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 8
#define CLK_PIN   13
#define DATA_PIN  11
#define CS_PIN    10
MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
#if USE_UI_CONTROL
const uint8_t SPEED_IN = A5;
const uint8_t DIRECTION_SET = 9; 
const uint8_t INVERT_SET = 8;     
const uint8_t SPEED_DEADBAND = 5;
#endif // USE_UI_CONTROL
uint8_t scrollSpeed = 25;    
textEffect_t scrollEffect = PA_SCROLL_LEFT;
textPosition_t scrollAlign = PA_LEFT;
uint16_t scrollPause = 1500; 
#define	BUF_SIZE 100
char curMessage[BUF_SIZE] = { "NARZULLAYEV JAHONGIR // JUMAYEV YUNUS" };
char newMessage[BUF_SIZE] = { "BY RIGN GROUP" };
bool newMessageAvailable = false;
#if USE_UI_CONTROL
MD_UISwitch_Digital uiDirection(DIRECTION_SET);
MD_UISwitch_Digital uiInvert(INVERT_SET);
void doUI(void)
{
  {
    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)
  {
    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) 
  {
    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))
    {
      *cp = '\0'; 
     
      cp = newMessage;
      newMessageAvailable = true;
    }
    else  
      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();
}