#include <MD_MAX72xx.h>
#include <SPI.h>
#include "font_data.h"

#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 16

//Original ARDUINO
#define CLK_PIN   13  // or SCK
#define DATA_PIN  11  // or MOSI
#define CS_PIN    10  // or SS

//Original ESp32
//#define CLK_PIN   D5 // VSPI_SCK
//#define DATA_PIN  D7 // VSPI_MOSI
//#define CS_PIN    D6  // VSPI_SS

// SPI hardware interface
MD_MAX72XX mx = MD_MAX72XX(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);
// Arbitrary pins
//MD_MAX72XX mx = MD_MAX72XX(HARDWARE_TYPE, DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);

// Text parameters
#define CHAR_SPACING  1 // pixels between characters
#define USE_LOCAL_FONT 1
// Global message buffers shared by Serial and Scrolling functions
#define BUF_SIZE  75
char message[BUF_SIZE] =  "    000        60";
//char message[BUF_SIZE] = "P 000  0030";
int x=60;
int y=0;

void printText(uint8_t modStart, uint8_t modEnd, char *pMsg)
// Print the text string to the LED matrix modules specified.
// Message area is padded with blank columns after printing.
{
  uint8_t   state = 0;
  uint8_t   curLen;
  uint16_t  showLen;
  uint8_t   cBuf[8];
  int16_t   col = ((modEnd + 1) * COL_SIZE) - 1;

  mx.control(modStart, modEnd, MD_MAX72XX::UPDATE, MD_MAX72XX::OFF);

  do     // finite state machine to print the characters in the space available
  {
    switch(state)
    {
      case 0: // Load the next character from the font table
        // if we reached end of message, reset the message pointer
        if (*pMsg == '\0')
        {
          showLen = col - (modEnd * COL_SIZE);  // padding characters
          state = 2;
          break;
        }

        // retrieve the next character form the font file
        showLen = mx.getChar(*pMsg++, sizeof(cBuf)/sizeof(cBuf[0]), cBuf);
        curLen = 0;
        state++;
        // !! deliberately fall through to next state to start displaying

      case 1: // display the next part of the character
        mx.setColumn(col--, cBuf[curLen++]);

        // done with font character, now display the space between chars
        if (curLen == showLen)
        {
          showLen = CHAR_SPACING;
          state = 2;
        }
        break;

      case 2: // initialize state for displaying empty columns
        curLen = 0;
        state++;
        // fall through

      case 3:  // display inter-character spacing or end of message padding (blank columns)
        mx.setColumn(col--, 0);
        curLen++;
        if (curLen == showLen)
          state = 0;
        break;

      default:
        col = -1;   // this definitely ends the do loop
    }
  } while (col >= (modStart * COL_SIZE));

  mx.control(modStart, modEnd, MD_MAX72XX::UPDATE, MD_MAX72XX::ON);
}

void setup() {
  // put your setup code here, to run once:
 mx.begin();
  mx.setFont(numeric7Seg);
  Serial.begin(9600);
  
}

void loop() {
  // put your main code here, to run repeatedly:
//printText(0, MAX_DEVICES-1, "    000        60");
printText(0, MAX_DEVICES-1,message);


delay(1000);
//unidadSegundos=
//message[4]=unidadSegundos;
//itoa (10,message,10);
//sprintf_P(message, (PGM_P)F("%02d:%02d:%02d"), 0, 29, 20);
x--;
y++;
sprintf_P(message, (PGM_P)F("    %03d        %02d        Char:%c"),y, x, y);
}