// IMPORTANTE instalar drivers especiales para Digispark ATTINY85, gestor de tarjetas y tarjeta
// https://kawaii-tech.com/instalando-drivers-para-digispark-2/
// https://www.digilogic.es/digispark-attiny-usb-un-arduino-en-miniatura/

//Codigo modificado tomado de: 
/* Arduino code to communicate with xbox 360 RF module.
Original work by (yaywoop) / additional ideas from Alexander Martinez - modified by dilandou (www.dilandou.com, www.diru.org/wordpress)
First sends LED initialisation code followed by LED startup animation code, then sleeps until a button press for sync command.
RF module must be powered with 3.3V, two diodes in series with USB 5v will do. Connect the USB wires to a host computer, and the data and serial wires to Arduino.
of course, make sure to have a common ground */

//#include <avr/sleep.h> 
/*Al utilizar la tarjeta Digispark Attiny85 las interrupciones no funcionan bien, asi que no las utilizo, posiblemente por conflicto con el bootloader.
Pudiera suceder lo mismo con Arduino Leonardo o cualquier otro que tenga bootloader integrado con USB nativo.*/

#define sync_pin 2 //power button repurposed for sync button (pin 5 on the module)
#define data_pin 1 //data line (pin 6 on the module)
#define clock_pin 0 //clock line (pin 7 on module) 

int led_cmd[10] =  {0,0,1,0,0,0,0,1,0,0}; //Activates/initialises the LEDs, leaving the center LED lit.
int anim_cmd[10] = {0,0,1,0,0,0,0,1,0,1}; //Makes the startup animation on the ring of light.
int sync_cmd[10] = {0,0,0,0,0,0,0,1,0,0}; //Initiates the sync process.
//int all_red[10] = {0,0,1,0,1,1,1,1,1,1};
//int all_orange[10] = {0,0,1,1,1,0,0,0,0,0};
int CLEAR_ERROR[10] = {0,0,1,1,0,0,0,0,0,0};
volatile boolean sync_enable = 0;

void setup() {
  pinMode(sync_pin, INPUT_PULLUP);
  digitalWrite(sync_pin,HIGH);
  pinMode(data_pin, INPUT);
  pinMode(clock_pin, INPUT);
  delay(2000);

  initLEDs();
//  sendData(sync_cmd);
}

void sendData(int cmd_do[]) {
  pinMode(data_pin, OUTPUT);
  digitalWrite(data_pin, LOW);    //start sending data.
  int prev = 1;
  for(int i = 0; i < 10; i++){

    while (prev == digitalRead(clock_pin)){} //detects change in clock
    prev = digitalRead(clock_pin);
      // should be after downward edge of clock, so send bit of data now
    digitalWrite(data_pin, cmd_do[i]);

    while (prev == digitalRead(clock_pin)){} //detects upward edge of clock
    prev = digitalRead(clock_pin);
  }
  digitalWrite(data_pin, HIGH);
 // pinMode(data_pin, INPUT);
}

void initLEDs(){
  sendData(led_cmd);
  delay(50);
  sendData(anim_cmd);
  delay(50);
  sendData(CLEAR_ERROR);
  delay(50);
}

//void clr_errors(){
//  sendData(CLEAR_ERROR);
//  delay(50);
//  sendData(led_cmd);
//  delay(50);
//  sendData(anim_cmd);
//  delay(50);
//}

void loop(){
  sync_enable = !digitalRead(sync_pin);
  if(sync_enable==1) {
    sendData(sync_cmd);
    sync_enable = 0;
    delay(10000);
    digitalWrite(sync_pin,HIGH);
  }
}