/*#include <LedControl.h>
int DIN = 11;
int CS1 = 10;
int CS2 = 9; 
int CLK = 13;
LedControl lc1=LedControl(DIN,CLK,CS1,1);
LedControl lc2=LedControl(DIN,CLK,CS2,1);

void setup(){
 lc1.shutdown(0,false);
 lc2.shutdown(0,false); 
 lc1.setIntensity(0,50);
 lc2.setIntensity(0,50);
 lc1.clearDisplay(0);
 lc2.clearDisplay(0);
}
void printByte1(byte character []){
  int i = 0;
  for(i=0;i<=8;i++){
    lc1.setRow(0,i,character[i]);
  }
}
void printByte2(byte character []){
  int i = 0;
  for(i=0;i<=8;i++){
    lc2.setRow(0,i,character[i]);
  }
}
void loop(){ 
  byte cero1[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
  byte cero2[8] = {0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
  int value = analogRead(A0); // to read potentiometer value
  if (value >= 500)
  {
    int scale = map(value, 500, 1000, 0, 10);
    for (int i=0;i<scale;i++)
    {
      cero1[i] = 0xff;
    }
  }
  else
  {
    int scale = map(value, 500, 0, 0, 10);
    for (int i=0;i<scale;i++)
    {
      cero2[i] = 0xff;
    }
  }

  printByte1(cero1);
  delay(100);
  printByte2(cero2);
  delay(100);
}*/

/*#include <LedControl.h>
int DIN = 11;
int CS =  10;
int CLK = 13;
LedControl lc = LedControl(DIN, CLK, CS, 4);

void setup() {
  Serial.begin(115200);
  lc.shutdown(0, false);
  lc.setIntensity(0, 50);
  lc.clearDisplay(0);
}

void printByte(byte character [], int panel) {
  int i = 0;
  for (i = 0; i < 8; i++) {
    lc.setRow(panel, i, character[i]);
  }
}

void loop() {
  int panel; // which panel to use
  byte cero[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
  int value = analogRead(A0); // read of potentiometer value
  int scale = map(value, 0, 1023, 0, 33); // 32 rows, plus one

  if (value < 256 && value > 0)
  {
    panel = 3;
    scale = 8 - scale;
  }else if (value < 512 && value > 256)
  {
    panel = 2;
    scale = 16 - scale;
  }else if (value < 768 && value > 512)
  {
    panel = 1;
    scale = scale - 16;
  }else
  {
    panel = 0;
    scale = scale - 24;
  }

  for (int i = 0; i < scale; i++) {
    cero[i] = 0xff;
  }
  printByte(cero, panel);
  // delay(100);
}*/

#include <LedControl.h>
int DIN = 11;
int CS =  10;
int CLK = 13;
LedControl lc = LedControl(DIN, CLK, CS, 2);

void setup() {
  Serial.begin(115200);
  lc.shutdown(0, false);
  lc.setIntensity(0, 50);
  lc.clearDisplay(0);
}

void printByte(byte character [], int panel) {
  int i = 0;
  for (i = 0; i < 8; i++) {
    lc.setRow(panel, i, character[i]);
  }
}

void loop() {
  int panel; // which panel to use
  byte cero[8] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
  int value = analogRead(A0); // read of potentiometer value
  int scale = map(value, 0, 1023, 0, 17); // 16 rows, plus one

  if (value > 512) { // if raw potentiometer is above middle, use panel 0, subtract 8 for row 
    panel = 0;
    scale = scale - 8;
  } else { // if raw potentiometer is below middle, use panel 1, subtract row from 8
    panel = 1;
    scale = 8 - scale;
  }
  for (int i = 0; i < scale; i++) {
    cero[i] = 0xff;
  }
  printByte(cero, panel);
  // delay(100);
}