LED Matrix w Backpack NOT WORKING with Arduino (HELP!)

Development Boards MicroMod
1

Hi! I’m a student who doesn’t know much about electronics and I’m working on some Arduino project which uses two Sparkfun Matrix with serial interface (w Backpack).

The first one (LED Matrix - Serial Interface - Red/Green/Blue) works perfectly with this code:

#define BLACK  0
#define RED  0xE0
#define GREEN  0x1C
#define BLUE  0x03
#define ORANGE  RED|GREEN
#define MAGENTA  RED|BLUE
#define TEAL  BLUE|GREEN
#define WHITE (RED|GREEN|BLUE)-0xA0

#define DATAOUT 11//MOSI - DI
#define SPICLOCK  13//sck - SCK
#define SLAVESELECT 10//ss - CS

char image [64] =
{
  RED,RED,RED,RED,RED,RED,RED,RED,
  GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,
  RED,RED,RED,RED,RED,RED,RED,RED,
  GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,
  RED,RED,RED,RED,RED,RED,RED,RED,
  GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,
  RED,RED,RED,RED,RED,RED,RED,RED,
  GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,GREEN,GREEN
};

void setup()
{
  SPCR = (1<<SPE)|(1<<MSTR)|(1<<SPR1);//Activate SPI HW, Master Mode, diviser Clock par 16

  pinMode(DATAOUT, OUTPUT);
  pinMode(SPICLOCK,OUTPUT);
  pinMode(SLAVESELECT,OUTPUT);

  digitalWrite(SLAVESELECT,HIGH);

  Serial.begin(9600);
}

void loop()
{
  transfer(image);
}

char spi_transfer(volatile char data)
{
  SPDR = data;
  while (!(SPSR & (1<<SPIF)))
  {
  };
  return SPDR;
}

void transfer(char myData[64]) {
  digitalWrite(SLAVESELECT, LOW);
  for(int i=0; i<64; i++){
    spi_transfer(myData[i]);
  }
  digitalWrite(SLAVESELECT, HIGH);
  delayMicroseconds(500);
}

But the second one (LED Matrix - Serial Interface - Red/Green), doesn’t work at all! For this one I used this code:

#define DATAOUT 11//MOSI - DI
#define SPICLOCK  13//sck - SCK
#define SLAVESELECT 10//ss - CS

char image [64] =
{
  1,1,1,1,1,1,1,1,
  1,1,1,1,1,1,1,1,
  1,1,1,1,1,1,1,1,
  1,1,1,1,1,1,1,1,
  1,1,1,1,1,1,1,1,
  1,1,1,1,1,1,1,1,
  1,1,1,1,1,1,1,1,
  1,1,1,1,1,1,1,1
};

void setup()
{
  SPCR = (1<<SPE)|(1<<MSTR)|(1<<SPR1);//Activate SPI HW, Master Mode, diviser Clock par 16

  pinMode(DATAOUT, OUTPUT);
  pinMode(SPICLOCK,OUTPUT);
  pinMode(SLAVESELECT,OUTPUT);

  digitalWrite(SLAVESELECT,HIGH);

  Serial.begin(9600);
}

void loop()
{
  transfer(image);
}

char spi_transfer(volatile char data)
{
  SPDR = data;
  while (!(SPSR & (1<<SPIF)))
  {
  };
  return SPDR;
}

void transfer(char myData[64]) {
  digitalWrite(SLAVESELECT, LOW);
  for(int i=0; i<64; i++){
    spi_transfer(myData[i]);
  }
  digitalWrite(SLAVESELECT, HIGH);
  delayMicroseconds(500);
}

The thing is, when I first connected the RG Matrix, it displayed a welcoming animation (lines of different colors) and then stopped on an image of a happy looking face, a smiley of sorts. Now it displays only the welcoming animation then goes black.

I would really appreciate any help, it drives me crazy, I wonder if I somehow managed to mess up the firmware…

Then again, I’ve no idea how to re-upload the firmware to the backpack using Arduino

Anyway, I have to mention that I also pressed the RESET button on the Backpack the first time I used it…

If this button resets the firmware I’m totally screwed :?

Anyway, I’d like to know if its somehow broken or it needs a different code.