ESP32-HUB75-MatrixPanel-DMA/examples/HueValueSpectrumTestDemo/HueValueSpectrumTestDemo.ino

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#define PANEL_RES_X 64 // Number of pixels wide of each INDIVIDUAL panel module.
#define PANEL_RES_Y 32 // Number of pixels tall of each INDIVIDUAL panel module.
#define PANEL_CHAIN 1 // Total number of panels chained one to another
#define NO_CIE1931
#define PIXEL_COLOUR_DEPTH_BITS 8
#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>
MatrixPanel_I2S_DMA *dma_display = nullptr;
#define R1_PIN 25
#define G1_PIN 26
#define B1_PIN 27
#define R2_PIN 14
#define G2_PIN 12
#define B2_PIN 13
#define A_PIN 23
#define B_PIN 19
#define C_PIN 5
#define D_PIN 17
#define E_PIN -1 // required for 1/32 scan panels, esp for 64x64 or 128x64 displays
#define LAT_PIN 4
#define OE_PIN 15
#define CLK_PIN 16
uint32_t lastMillis;
void setup() {
HUB75_I2S_CFG::i2s_pins _pins={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};
HUB75_I2S_CFG mxconfig(
PANEL_RES_X, // Module width
PANEL_RES_Y, // Module height
1, // chain length
_pins // pin mapping
);
//mxconfig.gpio.e = 18;
//mxconfig.clkphase = false;
//mxconfig.driver = HUB75_I2S_CFG::FM6126A;
// Display Setup
dma_display = new MatrixPanel_I2S_DMA(mxconfig);
dma_display->begin();
dma_display->clearScreen();
}
void loop() {
// Canvas loop
float t = (float)(millis()%4000)/4000.f;
for(int x = 0; x < PANEL_RES_X; x++){
float r =max(min(cosf(2.f*PI*(t+(float)x/PANEL_RES_X+0.f/3.f))+0.5f,1.f),0.f);
float g =max(min(cosf(2.f*PI*(t+(float)x/PANEL_RES_X+1.f/3.f))+0.5f,1.f),0.f);
float b =max(min(cosf(2.f*PI*(t+(float)x/PANEL_RES_X+2.f/3.f))+0.5f,1.f),0.f);
for(int y = 0; y < PANEL_RES_Y; y++)
if(y*2 < PANEL_RES_Y){
float t = (2.f*y)/PANEL_RES_Y;
dma_display->drawPixelRGB888(x,y,
(r*t)*255,
(g*t)*255,
(b*t)*255
);
}else{
float t = (2.f*(PANEL_RES_Y-y))/PANEL_RES_Y;
dma_display->drawPixelRGB888(x,y,
(r*t+1-t)*255,
(g*t+1-t)*255,
(b*t+1-t)*255
);
}
}
}