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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
#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>
MatrixPanel_I2S_DMA *dma_display = nullptr;
void setup() {
Serial.begin(112500);
HUB75_I2S_CFG::i2s_pins _pins={
25, //R1_PIN,
26, //G1_PIN,
27, //B1_PIN,
14, //R2_PIN,
12, //G2_PIN,
13, //B2_PIN,
23, //A_PIN,
19, //B_PIN,
5, //C_PIN,
17, //D_PIN,
18, //E_PIN,
4, //LAT_PIN,
15, //OE_PIN,
16, //CLK_PIN
};
HUB75_I2S_CFG mxconfig(
PANEL_RES_X, // Module width
PANEL_RES_Y, // Module height
PANEL_CHAIN // // chain length
//,_pins // pin mapping -- uncomment if providing own custom pin mapping as per above.
);
//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);
float tt = (float) ((millis()%16000)/16000.f);
for(int x = 0; x < (PANEL_RES_X*PANEL_CHAIN); x++)
{
// calculate the overal shade
float f = (((sin(tt-(float)x/PANEL_RES_Y/32.)*2.f*PI)+1)/2)*255;
// calculate hue spectrum into rgb
float r = max(min(cosf(2.f*PI*(t+((float)x/PANEL_RES_Y+0.f)/3.f))+0.5f,1.f),0.f);
float g = max(min(cosf(2.f*PI*(t+((float)x/PANEL_RES_Y+1.f)/3.f))+0.5f,1.f),0.f);
float b = max(min(cosf(2.f*PI*(t+((float)x/PANEL_RES_Y+2.f)/3.f))+0.5f,1.f),0.f);
// iterate pixels for every row
for(int y = 0; y < PANEL_RES_Y; y++){
if(y*2 < PANEL_RES_Y){
// top-middle part of screen, transition of value
float t = (2.f*y+1)/PANEL_RES_Y;
dma_display->drawPixelRGB888(x,y,
(r*t)*f,
(g*t)*f,
(b*t)*f
);
}else{
// middle to bottom of screen, transition of saturation
float t = (2.f*(PANEL_RES_Y-y)-1)/PANEL_RES_Y;
dma_display->drawPixelRGB888(x,y,
(r*t+1-t)*f,
(g*t+1-t)*f,
(b*t+1-t)*f
);
}
}
}
}
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