charlieplex_dice_using_delays

/*
 *  LED's DICE USING CHARLIE--PLEXING and delay()'s no millis()
 *  7 x LED's on just 4 x DIGITAL OUTPUT's
 *
 *            LED2        LED3
 *            LED4  LED1  LED4
 *            LED3        LED2
 *
 * common anode and cathode (parallel) for LEDs 2 3 & 4
 * Use an ADC pin for the randomSeed
 *
 * BY R NcCleery
 * 10th FEBRUARY 2021
 *
 */
#define Z (uint8_t)0
#define II (uint8_t)2
#define III (uint8_t)3
#define IV (uint8_t)4
#define V (uint8_t)5
uint8_t leds[]{II,III,V,IV};
int button(A0);

uint8_t diceVal[][4]{
    {0,0,0,0},
    {1,0,0,0}, //One
    {0,1,0,0}, //Two
    {1,0,1,0}, //Three
    {0,1,1,0}, //Four
    {1,1,1,0}, //Five
    {0,1,1,1}, //Six
};

#define I (uint8_t)1
#define VII (uint8_t)7
#define XX (uint8_t)20
//#define LX (uint8_t)60

bool throwDice = true;
uint8_t  count = Z, diceNUM = Z;

void setup(){
      pinMode(button, INPUT_PULLUP);
      for(uint8_t i = Z; i < IV; i++){
        pinMode(leds[i], OUTPUT);
        digitalWrite(leds[i], diceVal[diceNUM][i]);
      }
      uint8_t randomSeed(analogRead(button));
}

void loop(){

      uint8_t trigger = digitalRead(button);

      if(trigger == LOW){
          throwDice = true;
      }

      if(throwDice){
          if(count > XX){
              count = Z;
              diceNUM = random(I, VII);
              throwDice = false;
          }else{
              for(uint8_t i = Z; i < IV; i++){
              count++;
              diceNUM = Z;
              delay(XX);
              digitalWrite(leds[i],I);
              delay(XX);
              diceNUM = Z;
              delay(XX);
              digitalWrite(leds[i],I);
              delay(XX);
              }
          }
      }
        for(uint8_t i = Z; i < IV; i++){
              digitalWrite(leds[i], diceVal[diceNUM][i]);
     }
}