P10_RGB_DotMatrix_IOXESP32_Test.ino

#include <Arduino.h>
#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>

#define PANEL_RES_X 32  // Number of pixels wide of each INDIVIDUAL panel module.
#define PANEL_RES_Y 16  // Number of pixels tall of each INDIVIDUAL panel module.
#define PANEL_CHAIN 1   // Total number of panels chained one to another

// Module configuration
HUB75_I2S_CFG mxconfig(
  PANEL_RES_X,  // module width
  PANEL_RES_Y,  // module height
  PANEL_CHAIN   // Chain length
);

// Display Setup
MatrixPanel_I2S_DMA matrix(mxconfig);

uint32_t Wheel(byte WheelPos);

void setup() {
  Serial.begin(115200);

  matrix.begin();

  // fill the screen with 'black'
  matrix.fillScreen(matrix.color565(0, 0, 0));

  {
    matrix.setCursor(7, 0);
    const char* str = "P10";
    for (uint8_t i = 0; i < strlen(str); i++) {
      matrix.setTextColor(Wheel(i * 20));
      matrix.print(str[i]);
    }
    matrix.println();
  }

  {
    matrix.setCursor(1, 6 + 2);
    const char* str = "32x16";
    for (uint8_t i = 0; i < strlen(str); i++) {
      matrix.setTextColor(Wheel(200 + (i * 20)));
      matrix.print(str[i]);
    }
    matrix.println();
  }
}

void loop() {
  // do nothing
}

uint32_t Wheel(byte WheelPos) {
  WheelPos = 255 - WheelPos;
  if (WheelPos < 85) {
    return matrix.color565(255 - WheelPos * 3, 0, WheelPos * 3);
  }
  if (WheelPos < 170) {
    WheelPos -= 85;
    return matrix.color565(0, WheelPos * 3, 255 - WheelPos * 3);
  }
  WheelPos -= 170;
  return matrix.color565(WheelPos * 3, 255 - WheelPos * 3, 0);
}