M5StampS3でHUB75のLEDマトリクスを使うサンプル。

main.cpp

// Example sketch which shows how to display some patterns
// on a 64x32 LED matrix
// Copyright(c) 2024 Takao Akaki

#include <M5Unified.h>
#include <ESP32-HUB75-MatrixPanel-I2S-DMA.h>

// Change these to whatever suits
#define R1_PIN 1
#define G1_PIN 2
#define B1_PIN 3
#define R2_PIN 4
#define G2_PIN 5
#define B2_PIN 6
#define A_PIN 8
#define B_PIN 9
#define C_PIN 10
#define D_PIN 11
#define E_PIN 7 // required for 1/32 scan panels, like 64x64px. Any available pin would do, i.e. IO32
#define LAT_PIN 14
#define OE_PIN 46
#define CLK_PIN 12

#define LED_WIDTH 64
#define LED_HEIGHT 32

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(
	LED_WIDTH, // Module width
	LED_HEIGHT, // Module height
	1, // chain length
	_pins // pin mapping
);
MatrixPanel_I2S_DMA *dma_display = new MatrixPanel_I2S_DMA(mxconfig);

//MatrixPanel_I2S_DMA dma_display;
//MatrixPanel_I2S_DMA *dma_display = nullptr;

M5Canvas canvas1 = new M5Canvas(); // LEDに転写するSprite
M5Canvas canvas2 = new M5Canvas(canvas1); // 回転用
M5Canvas canvas3 = new M5Canvas(canvas1); // 文字スクロール用

static uint16_t numOfLeds = 64 * 32;

int textpos[2] = { 0, 0 };      // 上下2行分のテキスト表示位置
int scrollstep[2] = { 2, 2 };   // 上下2桁分のスクロールステップ


static constexpr uint32_t demo_interval = 5000; // デモを切り替える秒数
uint32_t last_demo_change_msec = 0; // 

void drawPanel() {
  for (int i = 0; i<LED_WIDTH; i++) {
    for (int j = 0; j<LED_HEIGHT; j++) {
      auto color = canvas1.readPixelValue(i, j);
      dma_display->drawPixel(i, j, color);
    }
  }
}

void scrollText(String str, uint8_t line_no) {
  size_t textlen = sizeof(str) / sizeof(str[0]);
  int32_t cursor_x = canvas3.getCursorX() - scrollstep[line_no];
  if (cursor_x <= 0)
  {
    textpos[line_no] = 0;
    cursor_x = canvas1.width();
  }

  canvas3.setCursor(cursor_x, 0);
  canvas3.scroll(-scrollstep[line_no], 0);
  while (textpos[line_no] < textlen && cursor_x <= canvas1.width())
  {
    canvas3.print(str.substring(textpos[line_no]));
    cursor_x = canvas3.getCursorX();
  }
  canvas3.pushSprite(&canvas1, 0, (canvas1.height() - canvas3.height()) >> line_no);
  drawPanel();
  vTaskDelay(50/portTICK_PERIOD_MS);
}

float angle = 0.0f;
void rotatetSprite(bool cc) {
  canvas1.fillSprite(TFT_BLACK);
  canvas2.pushRotated(&canvas1, angle);
  if (cc) {
    angle += 1.0f;
  } else {
    angle -= 1.0f;
  }
  drawPanel();
}

void rotateText(String text, uint16_t pivot_x, uint16_t pivot_y, bool isCW, uint16_t color) {
  canvas2.clear();
  canvas2.setCursor(0, 0);
  canvas2.setTextColor(color);
  canvas2.println(text);
  canvas2.setPivot(pivot_x, pivot_y);
  rotatetSprite(isCW);
}



void setup() {
  auto cfg = M5.config();
  M5.begin(cfg);
  canvas1.setColorDepth(16);
  canvas1.setSwapBytes(false);
  canvas1.createSprite(LED_WIDTH, LED_HEIGHT);

  canvas2.setColorDepth(16);
  canvas2.setSwapBytes(true);
  canvas2.createSprite(LED_WIDTH, LED_HEIGHT);
  canvas2.setTextSize(1);
  canvas2.setFont(&m5gfx::fonts::efontCN_16);
  canvas2.setCursor(0, 0);
  canvas2.setTextColor(m5gfx::swap565(0, 255, 0));
  canvas2.println("Hello");
  canvas2.setTextColor(m5gfx::swap565(255, 0, 0));
  canvas2.println("今日は");

  // 文字スクロール用のcanvas
  canvas3.setColorDepth(16);
  canvas3.setSwapBytes(false);
  canvas3.setTextSize(1);
  canvas2.setFont(&m5gfx::fonts::efontCN_16);
  canvas3.createSprite(LED_WIDTH, 16);

  // Display Setup
  dma_display->begin();
  dma_display->setBrightness8(90); //0-255
  dma_display->fillScreenRGB888(255, 0, 0);
  delay(5000);
  dma_display->clearScreen();
  last_demo_change_msec = millis();
  while((millis() - last_demo_change_msec) < demo_interval) rotateText("Start", 28, 8, false, m5gfx::swap565(255, 0, 0)); 
  last_demo_change_msec = millis();
}



void loop() {
  while((millis() - last_demo_change_msec) < demo_interval) rotateText("M5Stack", 28, 8, false, m5gfx::swap565(255, 0, 0)); 
  last_demo_change_msec = millis();
  while((millis() - last_demo_change_msec) < demo_interval) rotateText("スタック チャン", 32, 16, true, m5gfx::swap565(0, 255, 0)); 
  last_demo_change_msec = millis();
  while((millis() - last_demo_change_msec) < demo_interval) rotateText(" ・＿・ ", 32, 8, false, m5gfx::swap565(0, 0, 255)); 
  last_demo_change_msec = millis();

}

platformio.ini

; PlatformIO Project Configuration File
;
;   Build options: build flags, source filter
;   Upload options: custom upload port, speed and extra flags
;   Library options: dependencies, extra library storages
;   Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html

[env:m5stack-stamps3]
platform = espressif32 @ 5.3.0 
board = esp32-s3-devkitc-1
framework = arduino
upload_speed = 1500000
monitor_speed = 115200
board_build.f_flash = 80000000L
board_build.filesystem = spiffs
board_build.partitions = default_8MB.csv
build_flags = 
    -DCORE_DEBUG_LEVEL=4
    -DNO_GFX=1
lib_extra_dirs=lib
lib_deps = 
    m5stack/M5Unified@0.1.14
    ESP32 HUB75 LED MATRIX PANEL DMA Display