75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
#define PANEL_RES_X 64 // Number of pixels wide of each INDIVIDUAL panel module.
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#define PANEL_RES_Y 32 // Number of pixels tall of each INDIVIDUAL panel module.
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#define PANEL_CHAIN 1 // Total number of panels chained one to another
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#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>
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MatrixPanel_I2S_DMA *dma_display = nullptr;
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void setup() {
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HUB75_I2S_CFG::i2s_pins _pins={
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25, //R1_PIN,
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26, //G1_PIN,
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27, //B1_PIN,
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14, //R2_PIN,
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12, //G2_PIN,
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13, //B2_PIN,
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23, //A_PIN,
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19, //B_PIN,
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5, //C_PIN,
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17, //D_PIN,
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18, //E_PIN,
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4, //LAT_PIN,
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15, //OE_PIN,
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16, //CLK_PIN
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};
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HUB75_I2S_CFG mxconfig(
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PANEL_RES_X, // Module width
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PANEL_RES_Y, // Module height
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PANEL_CHAIN, // chain length
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_pins // pin mapping
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);
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//mxconfig.clkphase = false;
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//mxconfig.driver = HUB75_I2S_CFG::FM6126A;
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// Display Setup
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dma_display = new MatrixPanel_I2S_DMA(mxconfig);
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dma_display->begin();
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dma_display->clearScreen();
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}
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void loop() {
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// Canvas loop
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float t = (float)(millis()%4000)/4000.f;
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float tt = (float)((millis()%16000)/16000.f;
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for(int x = 0; x < PANEL_RES_X*PANEL_CHAIN; x++){
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// calculate the overal shade
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float f = ((sin(tt-(float)x/PANEL_RES_Y/32.)*2.f*PI)+1)/2)*255;
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// calculate hue spectrum into rgb
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float r = max(min(cosf(2.f*PI*(t+((float)x/PANEL_RES_Y+0.f)/3.f))+0.5f,1.f),0.f);
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float g = max(min(cosf(2.f*PI*(t+((float)x/PANEL_RES_Y+1.f)/3.f))+0.5f,1.f),0.f);
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float b = max(min(cosf(2.f*PI*(t+((float)x/PANEL_RES_Y+2.f)/3.f))+0.5f,1.f),0.f);
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// iterate pixels for every row
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for(int y = 0; y < PANEL_RES_Y; y++){
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if(y*2 < PANEL_RES_Y){
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// top-middle part of screen, transition of value
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float t = (2.f*y+1)/PANEL_RES_Y;
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dma_display->drawPixelRGB888(x,y,
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(r*t)*f,
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(g*t)*f,
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(b*t)*f
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);
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}else{
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// middle to bottom of screen, transition of saturation
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float t = (2.f*(PANEL_RES_Y-y)-1)/PANEL_RES_Y;
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dma_display->drawPixelRGB888(x,y,
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(r*t+1-t)*f,
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(g*t+1-t)*f,
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(b*t+1-t)*f
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);
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}
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}
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}
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}
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