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example/2_PatternPlasma.ino

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+/*
+ * Portions of this code are adapted from Aurora: https://github.com/pixelmatix/aurora
+ * Copyright (c) 2014 Jason Coon
+ *
+ * Portions of this code are adapted from LedEffects Plasma by Robert Atkins: https://bitbucket.org/ratkins/ledeffects/src/26ed3c51912af6fac5f1304629c7b4ab7ac8ca4b/Plasma.cpp?at=default
+ * Copyright (c) 2013 Robert Atkins
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "ESP32-VirtualMatrixPanel-I2S-DMA_v2.h"
+#include <FastLED.h>
+
+// placeholder for the matrix object
+MatrixPanel_I2S_DMA *dma_display = nullptr;
+
+
+uint16_t time_counter = 0, cycles = 0, fps = 0;
+unsigned long fps_timer;
+
+CRGB currentColor;
+CRGBPalette16 palettes[] = {HeatColors_p, LavaColors_p, RainbowColors_p, RainbowStripeColors_p, CloudColors_p};
+CRGBPalette16 currentPalette = palettes[0];
+
+
+CRGB ColorFromCurrentPalette(uint8_t index = 0, uint8_t brightness = 255, TBlendType blendType = LINEARBLEND) {
+  return ColorFromPalette(currentPalette, index, brightness, blendType);
+}
+
+void setup() {
+
+  Serial.begin(115200);
+
+  Serial.println(F("*****************************************************"));
+  Serial.println(F("*        ESP32-HUB75-MatrixPanel-I2S-DMA DEMO       *"));
+  Serial.println(F("*****************************************************"));
+
+  #define PANEL_WIDTH 64
+  #define PANEL_HEIGHT 32
+  #define PANEL_WIDTH_CNT 1
+  #define PANEL_HEIGHT_CNT 1
+  #define PANE_WIDTH PANEL_WIDTH*PANEL_WIDTH_CNT
+  #define PANE_HEIGHT PANEL_HEIGHT*PANEL_HEIGHT_CNT
+
+  hub75_i2s_cfg_t mxconfig = {
+    .mx_width = PANEL_WIDTH,
+    .mx_height = PANEL_HEIGHT,
+    .chain_length_x = PANEL_WIDTH_CNT,
+    .chain_length_y = PANEL_HEIGHT_CNT,
+    .gpio = {
+    .r1 = R1_PIN,
+    .g1 = G1_PIN,
+    .b1 = B1_PIN,
+    .r2 = R2_PIN,
+    .g2 = G2_PIN,
+    .b2 = B2_PIN,
+    .a = A_PIN,
+    .b = B_PIN,
+    .c = C_PIN,
+    .d = D_PIN,
+    .e = E_PIN,
+    .lat = LAT_PIN,
+    .oe = OE_PIN,
+    .clk = CLK_PIN,
+    },
+    .driver = ICN2053,
+    .i2sspeed = HZ_13M,
+    .double_buff = DOUBLE_BUFF_ON,
+    .double_dma_buff = DOUBLE_BUFF_ON,
+    .clk_phase = CLK_POZITIVE,
+    .color_depth = COLORx16//PIXEL_COLOR_DEPTH, 
+  };
+
+  //Ñîçäàíèå âèðòóàëüíîé ìàòðèöû
+  dma_display = new VirtualMatrixPanel(mxconfig);
+  //Ñîçäàíèå îáû÷íîé ïîñëåäîâàòåëüíîé ìàòðèöû
+  //dma_display = new MatrixPanel_I2S_DMA(mxconfig);
+
+
+  // Allocate memory and start DMA display
+  if( not dma_display->begin() )
+      Serial.println("****** !KABOOM! I2S memory allocation failed ***********");
+
+  // let's adjust default brightness to about 75%
+  dma_display->setBrightness8(192);    // range is 0-255, 0 - 0%, 255 - 100%
+
+  // well, hope we are OK, let's draw some colors first :)
+  Serial.println("Fill screen: RED");
+  dma_display->fillScreenRGB888(255, 0, 0);
+  dma_display->flipDMABuffer();
+  delay(1000);
+
+  Serial.println("Fill screen: GREEN");
+  dma_display->fillScreenRGB888(0, 255, 0);
+  dma_display->flipDMABuffer();
+  delay(1000);
+
+  Serial.println("Fill screen: BLUE");
+  dma_display->fillScreenRGB888(0, 0, 255);
+  dma_display->flipDMABuffer();
+  delay(1000);
+
+  Serial.println("Fill screen: Neutral White");
+  dma_display->fillScreenRGB888(64, 64, 64);
+  dma_display->flipDMABuffer();
+  delay(1000);
+
+  Serial.println("Fill screen: black");
+  dma_display->fillScreenRGB888(0, 0, 0);
+  dma_display->flipDMABuffer();
+  delay(1000);
+
+
+  // Set current FastLED palette
+  currentPalette = RainbowColors_p;
+  Serial.println("Starting plasma effect...");
+  fps_timer = millis();
+}
+
+void loop() {
+
+    for (int x = 0; x < PANE_WIDTH; x++) {
+            for (int y = 0; y <  PANE_HEIGHT; y++) {
+                int16_t v = 0;
+                uint8_t wibble = sin8(time_counter);
+                v += sin16(x * wibble * 3 + time_counter);
+                v += cos16(y * (128 - wibble)  + time_counter);
+                v += sin16(y * x * cos8(-time_counter) / 8);
+
+                currentColor = ColorFromPalette(currentPalette, (v >> 8) + 127); //, brightness, currentBlendType);
+                dma_display->drawPixelRGB888(x, y, currentColor.r, currentColor.g, currentColor.b);
+            }
+    }
+    dma_display->flipDMABuffer();
+
+    ++time_counter;
+    ++cycles;
+    ++fps;
+
+    if (cycles >= 1024) {
+        time_counter = 0;
+        cycles = 0;
+        currentPalette = palettes[random(0,sizeof(palettes)/sizeof(palettes[0]))];
+    }
+
+    // print FPS rate every 5 seconds
+    // Note: this is NOT a matrix refresh rate, it's the number of data frames being drawn to the DMA buffer per second
+    if (fps_timer + 5000 < millis()){
+      Serial.printf_P(PSTR("Effect fps: %d\n"), fps/5);
+      fps_timer = millis();
+      fps = 0;
+    }
+} // end loop

example/README.md

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+# Wave Pattern
+
+Demo of the colours, and the little flicker.
+
+![It's better in real life](PatternWave.jpg)
+
+Немного модифицированный вариант