arduino code for special effects for LEDs attached to an arduino. "arduino due" necessary when using PWM on lots of output pins

led_toy

int PIN_BASE=2;
int PINS_TO_USE=10;



#define STANDARD  0x0
#define INSTANT   0x1  // not &0x1 ? then standard speed

#define LEAVE_OFF 0x2
#define LEAVE_ON  0x3
// if neither LEAVE, then on off
// maybe if both LEAVE, then off/on??

#define RIGHTWARD 0x2 // 01? 
#define LEFTWARD  0x4 // 10?
#define CENTEROUT 0x6 // 11?

#define SOLO       0x10
#define NEIGHBOR   0x20
#define SPAN       0x30
#define FADE_MASK 0x30 // though instant implies no fade

#define MAXVAL    0xff
#define MIDVAL    0x7f
#define MINVAL    0x00


const int DELAY_BASE=25;
int currentDelay = DELAY_BASE;
void setup() {

  // initialize digital pin 2 (base) to (base+count) as output:
 
  for (int i = PIN_BASE; i <= PIN_BASE+PINS_TO_USE; i++) {
    pinMode(i, OUTPUT);
  }  
  randomSeed(analogRead(0));
}

void loop(){
  blinky(100);

  run_the_line(PIN_BASE, PIN_BASE+PINS_TO_USE, 6, STANDARD);

  grow(7,6,SOLO);
  delay(250);
  grow(7,6,LEAVE_ON);
  delay(250);
  grow(7,6,LEAVE_OFF);
  delay(250);

  blinky(100);
}

void blinky(int count) {
  int i=0;
  for (i = PIN_BASE; i < PIN_BASE+PINS_TO_USE; i++) {
    digitalWrite(i, HIGH);
  }  
  delay(DELAY_BASE);
  
  for (i=0; i < count; i++) {
    digitalWrite(random(PIN_BASE,PIN_BASE+PINS_TO_USE), random(LOW,HIGH+1) );
    delay(random(1,3)* DELAY_BASE);
  }
  for (i = PIN_BASE; i < PIN_BASE+PINS_TO_USE; i++) {
    digitalWrite(i, LOW);
    delay(DELAY_BASE);
  }  
}

/* 
mode 0x11___ delay/fade  00 standard delay 01 fade around 1 10 fade around by 2 11 instant all
mode 0x1___ fade
*/
void run_the_line(int first, int last, int passCount, byte mode) {
  int thisDelay = 2*DELAY_BASE;
  //if (mode & INSTANT == INSTANT) 
  //  thisDelay=0;
    
  int i=0;
  for (i = first; i <= last; i++) {
    digitalWrite(i, LOW);
    delay(thisDelay);
  }
  int pass=1; 
  while (pass <= passCount) {   
    for (i = first; i <= last; i++) {
      digitalWrite(i, HIGH);
      delay(thisDelay);
      digitalWrite(i, LOW);
    }
    pass++;
    if (pass > passCount)
       return;
    for (i = last-1; i > first; i--) {
      digitalWrite(i, HIGH);
      delay(thisDelay);
      digitalWrite(i, LOW);
    }
    pass++;
  }
}

/*
* from - starting pin
* count - number to act on
*/

void grow(int from, int num, byte mode) {
  int thisDelay = 3*DELAY_BASE;
//  if (mode & INSTANT == INSTANT) 
//    thisDelay=0;
    

  int i=0;
//  if (mode & SOLO==SOLO) {
    for (i = 0; i < num; i++) {
      // unless mode is LEAVE_OFF, turn on
//      if (!(mode&LEAVE_OFF)==LEAVE_OFF) {
        digitalWrite(from-i, HIGH);
        digitalWrite(from+i, HIGH);
        delay(thisDelay);
//      }
//      if (!(mode&LEAVE_ON)==LEAVE_ON) {
        digitalWrite(from-i, LOW);
        digitalWrite(from+i, LOW);
        delay(thisDelay);
//      }
    }
//  }
  
}