#include "Adafruit_TLC5947.h"
#define NUM_TLC5974 2

#define data   4
#define clock   5
#define latch   6

Adafruit_TLC5947 tlc = Adafruit_TLC5947(NUM_TLC5974, clock, data, latch);

int inByte = 0;
int i = 0;
int grey = 0;
int value[48];

void setup() {
  Serial.begin(115200);
      tlc.begin();
      for (int i = 0; i < 48; i++) {
        tlc.setPWM(i,0); // 0 = LED OFF
        tlc.write();
  }
  delay(1000);
        Serial.print('K');
}

void loop() {
  while(Serial.available() > 0) {
    inByte = Serial.read();
    if (inByte == 'S') {
      delay(1);
      grey = Serial.read();
      grey = map(grey,0,255,0,4096);
      value[i] = grey;
      //tlc.setPWM(i,grey);
      i++;
    }
    if (inByte == 'E') {
      i = 0;
      for (int i = 0; i < 48; i++) {
              tlc.setPWM(i,value[i]);
      }

      tlc.write();
      delay(500);
       for (int i = 0; i < 48; i++) {
        tlc.setPWM(i,0); // 0 = LED OFF

  }
          tlc.write();

      Serial.print('K');
    }
  }
}