I did not know that. I changed it from "#define BRIGHTNESS" to float "BRIGHTNESS = z1;". I was hoping that I could just set z1=some value when I wanted to change the brightness but it didn't work.
#include<FastLED.h>
#define CLOCK_PIN 5
#define DATA_PIN 4
#define LED_TYPE APA102
#define COLOR_ORDER BGR
const uint8_t kMatrixWidth = 16;
const uint8_t kMatrixHeight = 16;
const bool kMatrixSerpentineLayout = true;
float z1 = 20; //sets the brightnes value
float BRIGHTNESS = z1;
#define NUM_LEDS (kMatrixWidth * kMatrixHeight)
#define MAX_DIMENSION ((kMatrixWidth>kMatrixHeight) ? kMatrixWidth : kMatrixHeight)
// The leds
CRGB leds[kMatrixWidth * kMatrixHeight];
// The 16 bit version of our coordinates
static uint16_t x;
static uint16_t y;
static uint16_t z;
// We're using the x/y dimensions to map to the x/y pixels on the matrix. We'll
// use the z-axis for "time". speed determines how fast time moves forward. Try
// 1 for a very slow moving effect, or 60 for something that ends up looking like
// water.
uint16_t speed = 20; // speed is set dynamically once we've started up
// Scale determines how far apart the pixels in our noise matrix are. Try
// changing these values around to see how it affects the motion of the display. The
// higher the value of scale, the more "zoomed out" the noise iwll be. A value
// of 1 will be so zoomed in, you'll mostly see solid colors.
uint16_t scale = 30; // scale is set dynamically once we've started up
// This is the array that we keep our computed noise values in
uint8_t noise[MAX_DIMENSION][MAX_DIMENSION];
CRGBPalette16 currentPalette( PartyColors_p );
uint8_t colorLoop = 1;
void setup() {
delay(3000);
FastLED.addLeds<APA102, DATA_PIN, CLOCK_PIN, BGR>(leds, NUM_LEDS);
LEDS.setBrightness(BRIGHTNESS);
// Initialize our coordinates to some random values
x = random16();
y = random16();
z = random16();
}
// Fill the x/y array of 8-bit noise values using the inoise8 function.
void fillnoise8() {
// If we're runing at a low "speed", some 8-bit artifacts become visible
// from frame-to-frame. In order to reduce this, we can do some fast data-smoothing.
// The amount of data smoothing we're doing depends on "speed".
uint8_t dataSmoothing = 0;
if ( speed < 50) {
dataSmoothing = 200 - (speed * 4);
}
for (int i = 0; i < MAX_DIMENSION; i++) {
int ioffset = scale * i;
for (int j = 0; j < MAX_DIMENSION; j++) {
int joffset = scale * j;
uint8_t data = inoise8(x + ioffset, y + joffset, z);
// The range of the inoise8 function is roughly 16-238.
// These two operations expand those values out to roughly 0..255
// You can comment them out if you want the raw noise data.
data = qsub8(data, 16);
data = qadd8(data, scale8(data, 39));
if ( dataSmoothing ) {
uint8_t olddata = noise[i][j];
uint8_t newdata = scale8( olddata, dataSmoothing) + scale8( data, 256 - dataSmoothing);
data = newdata;
}
noise[i][j] = data;
}
}
z += speed;
// apply slow drift to X and Y, just for visual variation.
x += speed / 8;
y -= speed / 16;
}
void mapNoiseToLEDsUsingPalette()
{
static uint8_t ihue = 0;
for (int i = 0; i < kMatrixWidth; i++) {
for (int j = 0; j < kMatrixHeight; j++) {
// We use the value at the (i,j) coordinate in the noise
// array for our brightness, and the flipped value from (j,i)
// for our pixel's index into the color palette.
uint8_t index = noise[j][i];
uint8_t bri = noise[i][j];
// if this palette is a 'loop', add a slowly-changing base value
if ( colorLoop) {
index += ihue;
}
// brighten up, as the color palette itself often contains the
// light/dark dynamic range desired
if ( bri > 127 ) {
bri = 255;
} else {
bri = dim8_raw( bri * 2);
}
CRGB color = ColorFromPalette( currentPalette, index, bri);
leds[XY(i, j)] = color;
}
}
ihue += 1;
}
void loop() {
// Periodically choose a new palette, speed, and scale
ChangePaletteAndSettingsPeriodically();
// generate noise data
fillnoise8();
// convert the noise data to colors in the LED array
// using the current palette
mapNoiseToLEDsUsingPalette();
LEDS.show();
}
#define HOLD_PALETTES_X_TIMES_AS_LONG 1
void ChangePaletteAndSettingsPeriodically()
{
uint8_t secondHand = ((millis() / 1000) / HOLD_PALETTES_X_TIMES_AS_LONG) % 60;
static uint8_t lastSecond = 99;
if ( lastSecond != secondHand) {
lastSecond = secondHand;
if ( secondHand == 0) {
currentPalette = RainbowColors_p;
speed = 20;
scale = 30;
colorLoop = 1;
}
if ( secondHand == 5) {
SetupPurpleAndGreenPalette();
speed = 10;
scale = 50;
colorLoop = 1;
}
z1 = 10; //sets the brightnes value
if ( secondHand == 7) {
SetupBlackAndWhiteStripedPalette();
speed = 20;
scale = 30;
colorLoop = 1;
}
z1 = 50; //sets the brightnes value
if ( secondHand == 9) {
SetupBlackAndWhiteStripedPalette();
speed = 30;
scale = 30;
colorLoop = 1;
}
z1 = 10; //sets the brightnes value
/* if( secondHand == 15) { currentPalette = ForestColors_p; speed = 8; scale =120; colorLoop = 0; }*/
if ( secondHand == 12) {
currentPalette = CloudColors_p;
speed = 5;
scale = 30;
colorLoop = 1;
}
/* if( secondHand == 25) { currentPalette = LavaColors_p; speed = 8; scale = 50; colorLoop = 0; }
if( secondHand == 30) { currentPalette = OceanColors_p; speed = 20; scale = 90; colorLoop = 0; }
if( secondHand == 35) { currentPalette = PartyColors_p; speed = 20; scale = 30; colorLoop = 1; }
if( secondHand == 40) { SetupRandomPalette(); speed = 20; scale = 20; colorLoop = 1; }
if( secondHand == 45) { SetupRandomPalette(); speed = 50; scale = 50; colorLoop = 1; }*/
if ( secondHand == 50) {
SetupRandomPalette();
speed = 90;
scale = 90;
colorLoop = 1;
}
if ( secondHand == 55) {
currentPalette = RainbowStripeColors_p;
speed = 30;
scale = 20;
colorLoop = 1;
}
}
}
// This function generates a random palette that's a gradient
// between four different colors. The first is a dim hue, the second is
// a bright hue, the third is a bright pastel, and the last is
// another bright hue. This gives some visual bright/dark variation
// which is more interesting than just a gradient of different hues.
void SetupRandomPalette()
{
currentPalette = CRGBPalette16(
CHSV( random8(), 255, 32),
CHSV( random8(), 255, 255),
CHSV( random8(), 128, 255),
CHSV( random8(), 255, 255));
}
// This function sets up a palette of black and white stripes,
// using code. Since the palette is effectively an array of
// sixteen CRGB colors, the various fill_* functions can be used
// to set them up.
void SetupBlackAndWhiteStripedPalette()
{
// 'black out' all 16 palette entries...
fill_solid( currentPalette, 16, CRGB::Black);
// and set every fourth one to white.
currentPalette[0] = CRGB::White;
currentPalette[4] = CRGB::White;
currentPalette[8] = CRGB::White;
currentPalette[12] = CRGB::White;
}
// This function sets up a palette of purple and green stripes.
void SetupPurpleAndGreenPalette()
{
CRGB purple = CHSV( HUE_PURPLE, 255, 255);
CRGB green = CHSV( HUE_GREEN, 255, 255);
CRGB black = CRGB::Black;
currentPalette = CRGBPalette16(
green, green, black, black,
purple, purple, black, black,
green, green, black, black,
purple, purple, black, black );
}
//
// Mark's xy coordinate mapping code. See the XYMatrix for more information on it.
//
uint16_t XY( uint8_t x, uint8_t y)
{
uint16_t i;
if ( kMatrixSerpentineLayout == false) {
i = (y * kMatrixWidth) + x;
}
if ( kMatrixSerpentineLayout == true) {
if ( y & 0x01) {
// Odd rows run backwards
uint8_t reverseX = (kMatrixWidth - 1) - x;
i = (y * kMatrixWidth) + reverseX;
} else {
// Even rows run forwards
i = (y * kMatrixWidth) + x;
}
}
return i;
}