// Throttle manager with Parola display,4 distinct patterns, 3 Hall Sensors and 3 LEDs

#define HARDWARE_TYPE MD_MAX72XX::PAROLA_HW
#define MAX_DEVICES 4
#define CLK_PIN    13
#define DATA_PIN   11
#define CS_PIN     10
#define SEGs        4
#define rnd random
MD_MAX72XX   p=MD_MAX72XX(MD_MAX72XX::PAROLA_HW,CS_PIN,SEGs); 
byte Cols[]={8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7,23,22,21,20,19,18,17,16,31,30,29,28,27,26,25,24};
byte star[]={24,36,0,36,0,66,8,66,0,8,129,0,8,129,0,137,24,36,0,36,0,66,8,66,0,8,129,0,8,129,0,137};
byte allc[]={24,25,26,27,28,29,30,31,16,17,18,19,20,21,22,23,8,9,10,11,12,13,14,15,0,1,2,3,4,5,6,7};
byte dots[]={1,2,4,8,16,32,64,128}; 
int i,j,x=5,speed=0;

void setup() {p.begin();p.control(MD_MAX72XX::INTENSITY,1); p.clear();delay(1000); 
              pinMode(2,INPUT_PULLUP);pinMode(3,INPUT_PULLUP);pinMode(4,INPUT_PULLUP); // 3 Hall Sensors
              pinMode(5,OUTPUT);pinMode(6,OUTPUT);pinMode(7,OUTPUT); // 3 LEDs, one for each Hall Sensor
              for (j=1;j<7;j++){bars();p.clear();}}

void loop()  {
  for (j=2;j<5;j++){digitalWrite(j+3,LOW);if(digitalRead(j)==0){speed=j;}}
  digitalWrite(speed+3,HIGH);
  switch (speed) {
    case 4:  warp();  break;
    case 3:  stars(); break;
    case 2:  scan();  break;
    default: break;}}

void warp()  {for(i=0;i<16;i++){p.clear();p.setColumn(Cols[i],star[i]);
              p.setColumn(Cols[i+16],star[i+16]); p.update();delay(15);}}             

void stars() {p.setColumn(rnd(32),dots[rnd(9)]); p.setPoint(rnd(9),rnd(32),rnd(100) > 90);p.update();delay(50);}  

void scan()  {for (i=0;i<32;i++) {p.clear();p.setColumn(allc[i],255); p.update();if(digitalRead(2)){p.clear();return;}else{delay(50);}}
              for (i=31;i>-1;i--){p.clear();p.setColumn(allc[i],255); p.update();if(digitalRead(2)){p.clear();return;}else{delay(50);}}}

void bars()  {digitalWrite(x,HIGH);
              for (i=0;i<16;i++) {p.clear();p.setColumn(Cols[i],255); p.setColumn(Cols[i+16],255);p.update();delay(30);}
              digitalWrite(x,LOW); x++; if (x==8){x=5;} 
              digitalWrite(x,HIGH);
              for (i=15;i>-1;i--){p.clear();p.setColumn(Cols[i],255); p.setColumn(Cols[i+16],255);p.update();delay(30);}
              digitalWrite(x,LOW); x++; if (x==8){x=5;}
              }