Code

by Ruiz Brothers

Arduino Libraries

To use the Daftpunk BLE sketch you'll want to make sure you're using the latest version of the Arduino IDE (1.6.12 at the time of this writing).

If you're totally new to Arduino take a little time to go through some introductory tutorials like how to make a LED blink.  This will help you understand how to use the IDE, load a sketch, and upload code.

Next you'll need to make sure the libraries used by the sketch are installed.  With the latest Arduino IDE you can use its library manager to easily install libraries, or check out this guide on how to manually install a library.  You'll want to install the following libraries:

  • Adafruit BluefruitLE nRF51
  • Adafruit NeoPixel

Search for the libraries in the library manager and they should be easy to find and install.

Adafruit AVR Boards

Next, you'll need to install the Adafruit AVR boards package from the Boards Manager. Open the Boards Manager and search for Adafruit AVR. This includes all of the boards from Adafruit and will make Arduino compatabile with them. The Daftpunk BLE sketch was tested with version 1.4.0.

Uploading Sketch to Adafruit Feather BLE

This sketch will run the Bluetooth controlled LED program to the NeoPixel strips that are mounted to the front of the visor.

To load the sketch make sure the libraries above are installed, and the Arduino is connected to the computer through a USB cable.  Under the Tools -> Board menu make sure the Adafruit Feather 32u4 is selected, and under the Tools -> Port menu the serial port for the Adafruit Feather is selected.  

Then press the upload button or click the Sketch -> Upload item to send the code to the Arduino.  Woo-hoo the sketch should be running.

Connect Adafruit BLE Mobile App to Adafruit Feather BLE

Download the Adafruit BLE Connect app for iOS or Android. Under the peripherals list, tap theconnect button on the Adafruit Bluefruit LE item. Make sure the Feather board is powered on. Select "Controller" and choose either Control Pad or the Color Picker.

Control Pad

Buttons 1-4 will trigger an animation.

  1. larsonScanner
  2. color wipe
  3. rainbow gradient
  4. rainbow cycle

Color Picker

Here you can change the brightness or RGB value of the leds. 

Make sure to have a data cable and not a power only USB cable.

You'll want to update the number of neopixels to 60. 

Change this line to:

#define NUMPIXELS               60

Check the sketch below

Download: file 
      /*********************************************************************
 This is an example for our nRF51822 based Bluefruit LE modules

 Pick one up today in the adafruit shop!

 Adafruit invests time and resources providing this open source code,
 please support Adafruit and open-source hardware by purchasing
 products from Adafruit!

 MIT license, check LICENSE for more information
 All text above, and the splash screen below must be included in
 any redistribution
*********************************************************************/

#include <string.h>
#include <Arduino.h>
#include <SPI.h>
#if not defined (_VARIANT_ARDUINO_DUE_X_) && not defined (_VARIANT_ARDUINO_ZERO_)
  #include <SoftwareSerial.h>
#endif

#include "Adafruit_BLE.h"
#include "Adafruit_BluefruitLE_SPI.h"
#include "Adafruit_BluefruitLE_UART.h"

#include "BluefruitConfig.h"

#include <Adafruit_NeoPixel.h>

/*=========================================================================
    APPLICATION SETTINGS

    FACTORYRESET_ENABLE       Perform a factory reset when running this sketch
   
                              Enabling this will put your Bluefruit LE module
                              in a 'known good' state and clear any config
                              data set in previous sketches or projects, so
                              running this at least once is a good idea.
   
                              When deploying your project, however, you will
                              want to disable factory reset by setting this
                              value to 0.  If you are making changes to your
                              Bluefruit LE device via AT commands, and those
                              changes aren't persisting across resets, this
                              is the reason why.  Factory reset will erase
                              the non-volatile memory where config data is
                              stored, setting it back to factory default
                              values.
       
                              Some sketches that require you to bond to a
                              central device (HID mouse, keyboard, etc.)
                              won't work at all with this feature enabled
                              since the factory reset will clear all of the
                              bonding data stored on the chip, meaning the
                              central device won't be able to reconnect.
    PIN                       Which pin on the Arduino is connected to the NeoPixels?
    NUMPIXELS                 How many NeoPixels are attached to the Arduino?
    -----------------------------------------------------------------------*/
    #define FACTORYRESET_ENABLE     1

    #define PIN                     6
    #define NUMPIXELS               60
/*=========================================================================*/

Adafruit_NeoPixel pixel = Adafruit_NeoPixel(NUMPIXELS, 6); // NeoPixel Object for Visor Strips

// Create the bluefruit object, either software serial...uncomment these lines
/*
SoftwareSerial bluefruitSS = SoftwareSerial(BLUEFRUIT_SWUART_TXD_PIN, BLUEFRUIT_SWUART_RXD_PIN);

Adafruit_BluefruitLE_UART ble(bluefruitSS, BLUEFRUIT_UART_MODE_PIN,
                      BLUEFRUIT_UART_CTS_PIN, BLUEFRUIT_UART_RTS_PIN);
*/

/* ...or hardware serial, which does not need the RTS/CTS pins. Uncomment this line */
// Adafruit_BluefruitLE_UART ble(BLUEFRUIT_HWSERIAL_NAME, BLUEFRUIT_UART_MODE_PIN);

/* ...hardware SPI, using SCK/MOSI/MISO hardware SPI pins and then user selected CS/IRQ/RST */
Adafruit_BluefruitLE_SPI ble(BLUEFRUIT_SPI_CS, BLUEFRUIT_SPI_IRQ, BLUEFRUIT_SPI_RST);

/* ...software SPI, using SCK/MOSI/MISO user-defined SPI pins and then user selected CS/IRQ/RST */
//Adafruit_BluefruitLE_SPI ble(BLUEFRUIT_SPI_SCK, BLUEFRUIT_SPI_MISO,
//                             BLUEFRUIT_SPI_MOSI, BLUEFRUIT_SPI_CS,
//                             BLUEFRUIT_SPI_IRQ, BLUEFRUIT_SPI_RST);


// A small helper
void error(const __FlashStringHelper*err) {
  Serial.println(err);
  while (1);
}

// function prototypes over in packetparser.cpp
uint8_t readPacket(Adafruit_BLE *ble, uint16_t timeout);
float parsefloat(uint8_t *buffer);
void printHex(const uint8_t * data, const uint32_t numBytes);

// the packet buffer
extern uint8_t packetbuffer[];


/**************************************************************************/
/*!
    @brief  Sets up the HW an the BLE module (this function is called
            automatically on startup)
*/
/**************************************************************************/
//additional variables

//Color
    uint8_t red = 255;
    uint8_t green = 255;
    uint8_t blue = 255;
    uint8_t animationState = 1;

    int pos = 0, dir = 1; // Position, direction of "eye" for larson scanner animation

void setup(void)
{
  //while (!Serial);  // required for Flora & Micro
  delay(500);

  // turn off neopixel
  pixel.begin(); // This initializes the NeoPixel library.

  for(uint8_t i=0; i<NUMPIXELS; i++) {
    pixel.setPixelColor(i, pixel.Color(0,0,0)); // off
  }
  colorWipe(pixel.Color(255, 255, 255), 20); 
  colorWipe(pixel.Color(0, 0, 0), 20); 
  pixel.show();

  Serial.begin(115200);
  Serial.println(F("Adafruit Bluefruit Neopixel Color Picker Example"));
  Serial.println(F("------------------------------------------------"));

  /* Initialise the module */
  Serial.print(F("Initialising the Bluefruit LE module: "));

  if ( !ble.begin(VERBOSE_MODE) )
  {
    error(F("Couldn't find Bluefruit, make sure it's in CoMmanD mode & check wiring?"));
  }
  Serial.println( F("OK!") );

  if ( FACTORYRESET_ENABLE )
  {
    /* Perform a factory reset to make sure everything is in a known state */
    Serial.println(F("Performing a factory reset: "));
    if ( ! ble.factoryReset() ){
      error(F("Couldn't factory reset"));
    }
  }

  /* Disable command echo from Bluefruit */
  ble.echo(false);

  Serial.println("Requesting Bluefruit info:");
  /* Print Bluefruit information */
  ble.info();

  Serial.println(F("Please use Adafruit Bluefruit LE app to connect in Controller mode"));
  Serial.println(F("Then activate/use the sensors, color picker, game controller, etc!"));
  Serial.println();

  ble.verbose(false);  // debug info is a little annoying after this point!

  /* Wait for connection */
  while (! ble.isConnected()) {
      delay(500);
  }

  Serial.println(F("***********************"));

  // Set Bluefruit to DATA mode
  Serial.println( F("Switching to DATA mode!") );
  ble.setMode(BLUEFRUIT_MODE_DATA);

  Serial.println(F("***********************"));
}

/**************************************************************************/
/*!
    @brief  Constantly poll for new command or response data
*/
/**************************************************************************/
void loop(void) {
  /* Wait for new data to arrive */
  uint8_t len = readPacket(&ble, BLE_READPACKET_TIMEOUT);
  if (len == 0) return;

  /* Got a packet! */
  // printHex(packetbuffer, len);

  // Color
  if (packetbuffer[1] == 'C') {
    uint8_t red = packetbuffer[2];
    uint8_t green = packetbuffer[3];
    uint8_t blue = packetbuffer[4];
    Serial.print ("RGB #");
    if (red < 0x10) Serial.print("0");
    Serial.print(red, HEX);
    if (green < 0x10) Serial.print("0");
    Serial.print(green, HEX);
    if (blue < 0x10) Serial.print("0");
    Serial.println(blue, HEX);

    for(uint8_t i=0; i<NUMPIXELS; i++) {
      pixel.setPixelColor(i, pixel.Color(red,green,blue));
    }
    pixel.show(); // This sends the updated pixel color to the hardware.
  }

  // Buttons
  if (packetbuffer[1] == 'B') {
 
    uint8_t buttnum = packetbuffer[2] - '0';
    boolean pressed = packetbuffer[3] - '0';
    Serial.print ("Button "); Serial.print(buttnum);
    animationState = buttnum;
    if (pressed) {
      Serial.println(" pressed");
    } else {
      Serial.println(" released");
    }
    
  if (animationState == 1){
    for(uint16_t i=0; i<pixel.numPixels(); i++) {
      pixel.setPixelColor(i, pixel.Color(0,0,0));
  }
    larsonScanner(pixel.Color(255,0,0), 30);
    pixel.show(); // This sends the updated pixel color to the hardware.
  }
  
  if (animationState == 2){
    colorWipe(pixel.Color(100, 0, 0), 20);
    colorWipe(pixel.Color(0, 0, 0), 20);
    colorWipe(pixel.Color(100, 0, 0), 20);
    colorWipe(pixel.Color(0, 0, 0), 20);
    colorWipe(pixel.Color(100, 0, 0), 20);
    colorWipe(pixel.Color(0, 0, 0), 20);
    pixel.show(); // This sends the updated pixel color to the hardware.
  }

  if (animationState == 3){
    for(uint16_t i=0; i<pixel.numPixels(); i++) {
      pixel.setPixelColor(i, pixel.Color(0,0,0));
    }
    pixel.setBrightness(255);
    rainbow(10);
    pixel.show(); // This sends the updated pixel color to the hardware.
  }
  
  if (animationState == 4){
    for(uint16_t i=0; i<pixel.numPixels(); i++) {
      pixel.setPixelColor(i, pixel.Color(0,0,0));
    }
    pixel.setBrightness(255);
    rainbowCycle(10);
    pixel.show(); // This sends the updated pixel color to the hardware.
  }
 }
}


// Fill the dots one after the other with a color
void colorWipe(uint32_t c, uint8_t wait) {
  for(uint16_t i=0; i<pixel.numPixels(); i++) {
      pixel.setPixelColor(i, c);
      pixel.show();
      delay(wait);
  }
}

void larsonScanner(uint32_t c, uint8_t wait){
   int j;
   
 for(uint16_t i=0; i<pixel.numPixels()+5; i++) {
  // Draw 5 pixels centered on pos.  setPixelColor() will clip any
  // pixels off the ends of the strip, we don't need to watch for that.
  pixel.setPixelColor(pos - 2, 0x100000); // Dark red
  pixel.setPixelColor(pos - 1, 0x800000); // Medium red
  pixel.setPixelColor(pos , 0xFF3000); // Center pixel is brightest
  pixel.setPixelColor(pos + 1, 0x800000); // Medium red
  pixel.setPixelColor(pos + 2, 0x100000); // Dark red
  
  pixel.show();
  delay(wait);
 
  // Rather than being sneaky and erasing just the tail pixel,
  // it's easier to erase it all and draw a new one next time.
  for(j=-2; j<= 2; j++) pixel.setPixelColor(pos+j, 0);
 
  // Bounce off ends of strip
  pos += dir;
  if(pos < 0) {
    pos = 1;
    dir = -dir;
  } else if(pos >= pixel.numPixels()) {
    pos = pixel.numPixels() - 2;
    dir = -dir;
  } 
 } 
 //colorWipe(pixel.Color(0, 0, 0), 20);
}



void flashRandom(int wait, uint8_t howmany) {
 
  for(uint16_t i=0; i<howmany; i++) {
    // get a random pixel from the list
    int j = random(pixel.numPixels());
    
    // now we will 'fade' it in 5 steps
    for (int x=0; x < 5; x++) {
      int r = red * (x+1); r /= 5;
      int g = green * (x+1); g /= 5;
      int b = blue * (x+1); b /= 5;
      
      pixel.setPixelColor(j, pixel.Color(r, g, b));
      pixel.show();
      delay(wait);
    }
    // & fade out in 5 steps
    for (int x=5; x >= 0; x--) {
      int r = red * x; r /= 5;
      int g = green * x; g /= 5;
      int b = blue * x; b /= 5;
      
      pixel.setPixelColor(j, pixel.Color(r, g, b));
      pixel.show();
      delay(wait);
    }
  }
  // LEDs will be off when done (they are faded to 0)
}

void rainbow(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256; j++) {
    for(i=0; i<pixel.numPixels(); i++) {
      pixel.setPixelColor(i, Wheel((i+j) & 255));
    }
    pixel.show();
    delay(wait);
  }
}

// Slightly different, this makes the rainbow equally distributed throughout
void rainbowCycle(uint8_t wait) {
  uint16_t i, j;

  for(j=0; j<256*5; j++) { // 5 cycles of all colors on wheel
    for(i=0; i< pixel.numPixels(); i++) {
      pixel.setPixelColor(i, Wheel(((i * 256 / pixel.numPixels()) + j) & 255));
    }
    pixel.show();
    delay(wait);
  }
}

//Theatre-style crawling lights.
void theaterChase(uint32_t c, uint8_t wait) {
  for (int j=0; j<10; j++) {  //do 10 cycles of chasing
    for (int q=0; q < 3; q++) {
      for (int i=0; i < pixel.numPixels(); i=i+3) {
        pixel.setPixelColor(i+q, c);    //turn every third pixel on
      }
      pixel.show();

      delay(wait);

      for (int i=0; i < pixel.numPixels(); i=i+3) {
        pixel.setPixelColor(i+q, 0);        //turn every third pixel off
      }
    }
  }
}

//Theatre-style crawling lights with rainbow effect
void theaterChaseRainbow(uint8_t wait) {
  for (int j=0; j < 256; j++) {     // cycle all 256 colors in the wheel
    for (int q=0; q < 3; q++) {
      for (int i=0; i < pixel.numPixels(); i=i+3) {
        pixel.setPixelColor(i+q, Wheel( (i+j) % 255));    //turn every third pixel on
      }
      pixel.show();

      delay(wait);

      for (int i=0; i < pixel.numPixels(); i=i+3) {
        pixel.setPixelColor(i+q, 0);        //turn every third pixel off
      }
    }
  }
}

// Input a value 0 to 255 to get a color value.
// The colours are a transition r - g - b - back to r.
uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if(WheelPos < 85) {
    return pixel.Color(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  if(WheelPos < 170) {
    WheelPos -= 85;
    return pixel.Color(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return pixel.Color(WheelPos * 3, 255 - WheelPos * 3, 0);
}
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This guide was first published on Nov 01, 2016. It was last updated on Nov 01, 2016. This page (Code) was last updated on Nov 14, 2019.