palette_basic

/* palette_basic
 *
 * By: Andrew Tuline
 * 
 * Date: October, 2018
 *
 * Basic Palette Usage
 * 
 */

#include "FastLED.h"                                          // FastLED library.

#if FASTLED_VERSION < 3001000
#error "Requires FastLED 3.1 or later; check github for latest code."
#endif

// Fixed definitions cannot change on the fly.
#define LED_DT 12                                             // Data pin to connect to the strip.
#define LED_CK 11                                             // Clock pin for WS2801 or APA102.
#define COLOR_ORDER BGR                                       // It's GRB for WS2812 and BGR for APA102.
#define LED_TYPE APA102                                       // Using APA102, WS2812, WS2801. Don't forget to modify LEDS.addLeds to suit.
#define NUM_LEDS 30                                           // Number of LED's.

// Global variables can be changed on the fly.
uint8_t max_bright = 255;                                      // Overall brightness definition. It can be changed on the fly.
uint8_t thisdelay = 20;

struct CRGB leds[NUM_LEDS];                                   // Initialize our LED array.

DEFINE_GRADIENT_PALETTE( heatmap_gp ) {
  0,     0,  0,  0,   //black
128,   255,  0,  0,   //red
224,   255,255,  0,   //bright yellow
255,   255,255,255 }; //full white


CRGBPalette256 currentPalette(heatmap_gp);
TBlendType    currentBlending = LINEARBLEND;                                // NOBLEND or LINEARBLEND



void setup() {

  Serial.begin(57600);                                        // Initialize serial port for debugging.
  delay(1000);                                                // Soft startup to ease the flow of electrons.
 
  LEDS.addLeds<LED_TYPE, LED_DT, LED_CK, COLOR_ORDER>(leds, NUM_LEDS);  // Use this for WS2801 or APA102
//  LEDS.addLeds<LED_TYPE, LED_DT, COLOR_ORDER>(leds, NUM_LEDS);  // Use this for WS2812

  FastLED.setBrightness(max_bright);
  set_max_power_in_volts_and_milliamps(5, 500);               // FastLED Power management set at 5V, 500mA.
  
} // setup()


 
void loop() {
  fillIt();
  FastLED.show();
} // loop()



void fillIt() {
  for (int i=0; i< NUM_LEDS; i++) {
      leds[i] = ColorFromPalette(currentPalette, i*256/NUM_LEDS);
  }
} // fillIt()