157 lines
4.7 KiB
C++
157 lines
4.7 KiB
C++
/*
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* An example that writes to a CRGB FastLED pixel buffer before being ultimately sent
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* to the DMA Display.
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*
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* Faptastic 2020
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*
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* Note:
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* * Layers use lots of RAM (3*WIDTH*HEIGHT bytes per layer to be precise), so use at your own risk.
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* * Make sure LAYER_WIDTH and LAYER_HEIGHT are correctly configured in Layer.h !!!
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*/
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//#define USE_CUSTOM_PINS // uncomment to use custom pins, then provide below
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#define A_PIN 26
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#define B_PIN 4
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#define C_PIN 27
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#define D_PIN 2
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#define E_PIN 21
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#define R1_PIN 5
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#define R2_PIN 19
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#define G1_PIN 17
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#define G2_PIN 16
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#define B1_PIN 18
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#define B2_PIN 25
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#define CLK_PIN 14
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#define LAT_PIN 15
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#define OE_PIN 13
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#include <FastLED.h> // FastLED needs to be installed.
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#include "Layer.h" // Layer Library
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#include "Fonts/FreeSansBold9pt7b.h" // include adafruit font
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/*
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* Below is an is the 'legacy' way of initialising the MatrixPanel_I2S_DMA class.
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* i.e. MATRIX_WIDTH and MATRIX_HEIGHT are modified by compile-time directives.
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* By default the library assumes a single 64x32 pixel panel is connected.
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*
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* Refer to the example '2_PatternPlasma' on the new / correct way to setup this library
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* for different resolutions / panel chain lengths within the sketch 'setup()'.
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*
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*/
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MatrixPanel_I2S_DMA dma_display; // Create HUB75 DMA object
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// Create FastLED based graphic 'layers'
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Layer bgLayer(dma_display); // Create background Layer
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Layer textLayer(dma_display); // Create foreground Layer
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int time_counter = 0;
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int cycles = 0;
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CRGBPalette16 currentPalette;
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CRGB currentColor;
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CRGB ColorFromCurrentPalette(uint8_t index = 0, uint8_t brightness = 255, TBlendType blendType = LINEARBLEND) {
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return ColorFromPalette(currentPalette, index, brightness, blendType);
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}
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void setup() {
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Serial.begin(115200);
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Serial.println("*****************************************************");
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Serial.println(" HELLO !");
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Serial.println("*****************************************************");
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#ifdef USE_CUSTOM_PINS
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dma_display.begin(R1_PIN, G1_PIN, B1_PIN, R2_PIN, G2_PIN, B2_PIN, A_PIN, B_PIN, C_PIN, D_PIN, E_PIN, LAT_PIN, OE_PIN, CLK_PIN ); // setup the LED matrix
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#else
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dma_display.begin();
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#endif
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// fill the screen with 'black'
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dma_display.fillScreen(dma_display.color444(0, 0, 0));
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// Set current FastLED palette
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currentPalette = RainbowColors_p;
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// Allocate Background Layer
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bgLayer.init();
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bgLayer.clear();
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bgLayer.setTransparency(false);
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// Allocate Canvas Layer
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textLayer.init();
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textLayer.clear();
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/* Step 1: Write some pixels to foreground Layer (use custom layer function)
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* Only need to do this once as we're not changing it ever again in this example.
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*/
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textLayer.drawCentreText("COOL!", MIDDLE, &FreeSansBold9pt7b, CRGB(255,255,255));
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textLayer.autoCenterX(); // because I don't trust AdaFruit to perfectly place the contents in the middle
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}
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int LayerCompositor_mode = 0;
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void loop() {
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for (int x = 0; x < dma_display.width(); x++) {
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for (int y = 0; y < dma_display.height(); y++) {
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int16_t v = 0;
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uint8_t wibble = sin8(time_counter);
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v += sin16(x * wibble * 3 + time_counter);
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v += cos16(y * (128 - wibble) + time_counter);
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v += sin16(y * x * cos8(-time_counter) / 8);
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currentColor = ColorFromPalette(currentPalette, (v >> 8) + 127); //, brightness, currentBlendType);
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/*
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* Step 2: Write to Background layer! Don't show it on the screen just yet.
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* Note: Layer class is designed for FastLED 'CRGB' data type.
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*/
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bgLayer.drawPixel(x, y, currentColor);
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}
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}
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time_counter += 1;
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cycles++;
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if (cycles >= 2048) {
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time_counter = 0;
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cycles = 0;
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}
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/*
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* Step 3: Merge foreground and background layers and send to the matrix panel!
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* Use our special sauce LayerCompositor functions
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*/
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switch (LayerCompositor_mode)
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{
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case 0:
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LayerCompositor::Siloette(dma_display, bgLayer, textLayer);
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break;
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case 1:
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LayerCompositor::Stack(dma_display, bgLayer, textLayer);
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break;
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case 2:
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LayerCompositor::Blend(dma_display, bgLayer, textLayer);
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break;
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}
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EVERY_N_SECONDS(5) { // FastLED Macro
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LayerCompositor_mode++;
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dma_display.clearScreen();
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if (LayerCompositor_mode > 2) LayerCompositor_mode = 0;
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}
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//
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// LayerCompositor::Blend(dma_display, bgLayer, textLayer, 127);
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} // end loop
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