#include <MD_MAX72xx.h>

#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES  1

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

MD_MAX72XX mx = MD_MAX72XX(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

void scrollText(const char *p)
{
  uint8_t charWidth;
  uint8_t cBuf[8];  // this should be ok for all built-in fonts
  uint8_t tempWidth;

  while (*p != '\0')
  {
    charWidth = mx.getChar(*p++, sizeof(cBuf) / sizeof(cBuf[0]), cBuf);
    tempWidth += charWidth + 1; 

    for (uint8_t i = 0; i <= charWidth; i++) // allow space between characters
    {
      mx.transform(MD_MAX72XX::TSL);
      mx.setColumn(0, (i < charWidth) ? cBuf[i] : 0);
      delay(50);
    }
  }
}  



void setup() {

  Serial.begin(115200);
  
  mx.begin();
  mx.control(MD_MAX72XX::INTENSITY, 0);
  Serial.println("Hello, let's test...");

}

void loop() {
  Serial.println("Checking column pixels");
  for (uint8_t col = 0; col < 8; col ++) {

    for (uint16_t dot = 1; dot < 256; dot = dot * 2) {
      mx.setColumn(col, dot);
      Serial.print(col);
      Serial.print(",");
      Serial.println(dot);
      delay(200);
    }
    mx.setColumn(col,0);
  }
  Serial.println("Checking row pixels");
  for (uint8_t row = 0; row < 8; row ++) {

    for (uint16_t dot = 1; dot < 256; dot = dot * 2) {
      mx.setRow(row, dot);
      Serial.print(row);
      Serial.print(",");
      Serial.println(dot);
      delay(200);
    }
    mx.setRow(row,0);
  }
  for (uint8_t i = 0; i < 8; i ++) {
    mx.setColumn(i,255);
  }
  delay(1000);
  mx.clear();
  delay(1000);

  scrollText("Test Complete   ");
  delay(1000);
}