#define CLK sr1:Q1
#define OE  sr1:Q2
#define LAT sr1:Q3

#define A   sr1:Q4
#define B   sr1:Q5
#define C   sr1:Q6
#define D   sr1:Q7

#define R1 sr2:Q1
#define G1 sr2:Q2
#define B1 sr2:Q3
#define R2 sr2:Q4
#define G2 sr2:Q5
#define B2 sr2:Q6



const int datapin    =  2;//DS SER Serial Data Input [data]
const int latchpin  =  3;//SHCP SRCLK Shift Register Clock Input [latch]
const int clockpin  =  4;//STCP RCK Storage Register Clock Input [clock]

#define LED_WIDTH 64
#define LED_HEIGHT 32

/*
74hc595:1 send data bytes is b1
74hc595:2 send data bytes is b2

b1=B00000010 mean only hub75:clock is on
b1=B00000100 mean only hub75:OE    is on
b1=B00001000 mean only hub75:LAT   is on

b1=B00010000 mean only hub75:A     is on
b1=B00100000 mean only hub75:B     is on
b1=B01000000 mean only hub75:C     is on
b1=B10000000 mean only hub75:D     is on

b2=B00000010 mean only hub75:R1    is on
b2=B00000100 mean only hub75:G1    is on
b2=B00001000 mean only hub75:B1    is on
b2=B00010000 mean only hub75:R2    is on
b2=B00100000 mean only hub75:G2    is on
b2=B01000000 mean only hub75:B2    is on
*/
void setup() {

    pinMode(datapin, OUTPUT);
    pinMode(latchpin, OUTPUT);
    pinMode(clockpin, OUTPUT);
    digitalWrite(datapin, LOW);
    digitalWrite(latchpin, LOW);
    digitalWrite(clockpin, LOW);
  Serial.begin(115200);

}

uint8_t address = 0;

void write595(byte b1,byte b2){
  //digitalWrite(latchpin, HIGH);
  //digitalWrite(latchpin, LOW);
  digitalWrite(latchpin, LOW);
  shiftOut(datapin, clockpin, LSBFIRST, b2);
  shiftOut(datapin, clockpin, LSBFIRST, b1);
  digitalWrite(latchpin, HIGH);
  //Serial.println(b1);
}

byte hub75_setting_data(bool clk,bool oe,bool lat,bool a,bool b,bool c,bool d) 
{
  byte data=B11111110;
  byte cmp;
  cmp=(d<<7)|(c<<6)|(b<<5)|(a<<4)|(lat<<3)|(oe<<2)|(clk<<1);
  //data=data&cmp;
  //Serial.println(cmp);
  return cmp;
}

byte hub75_dot_data(bool r1,bool r2,bool g1,bool g2,bool b1,bool b2) 
{
  byte data=B11111110;
  byte cmp=B00000000;
  cmp=(b2<<6)|(b1<<5)|(g2<<4)|(g1<<3)|(r2<<2)|(r1<<1);
  //data=data&cmp;
  return cmp;
}

void loop() {
  byte data1;
  byte data2;
  bool r1=0;
  bool g1=0;
  bool b1=0;
  bool r2=0;
  bool g2=0;
  bool b2=0;  
  bool clk=0;
  bool oe=0;
  bool lat=0;
  bool a=0;
  bool b=0;
  bool c=0;
  bool d=0;

  //oe=1;
  //write595(B0000100, 0);//OE OFF by HIGH

for (int j = 0; j < LED_HEIGHT; j++ ){
  lat=1;//latch on
  clk=0;
  r1=1;
  g1=1;
  b1=0;
  //data1=hub75_setting_data(clk,oe,lat,a,b,c,d);
  data2=hub75_dot_data(r1,r2,g1,g2,b1,b2);
  //write595(data1,data2);
  for(int i=0; i<LED_WIDTH; i++) {
  //send clock pulse
  clk=1;  
  data1=hub75_setting_data(clk,oe,lat,a,b,c,d);
  write595(data1,data2);//clock on
  clk=0;
  data1=hub75_setting_data(clk,oe,lat,a,b,c,d);
  write595(data1,data2);//clock off
  //write595(data1&B11110111,data2);//latch on
  }
// LED を消灯する (データ転送時のちらつきを防ぐ)
  oe=1;//OE OFF by HIGH
  data1=hub75_setting_data(clk,oe,lat,a,b,c,d);
  write595(data1,data2);

  if(address == 0b1111) {
    address = 0;
  } else {
    address++;
  }
  a=address & 0b0001;
  b=address & 0b0010;
  c=address & 0b0100;
  d=address & 0b1000;
// 4bit で指定した列に RGB データを転送する
  lat=1;//latch off
  data1=hub75_setting_data(clk,oe,lat,a,b,c,d);
  data2=hub75_dot_data(r1,r2,g1,g2,b1,b2);
  write595(data1,data2);
  lat=0;//latch off
  oe=0;//OE ON by LOW
  data1=hub75_setting_data(clk,oe,lat,a,b,c,d);
  write595(data1,data2);
}
  //Serial.println(data1);
  delay(100);

}