8x32 led 跑馬燈

 #include <MD_Parola.h>

#include <MD_MAX72xx.h>

#include <SPI.h>

// 模組設定：請根據你模組的型號選擇 FC16_HW 或 PAROLA_HW

#define HARDWARE_TYPE MD_MAX72XX::FC16_HW  // 常見模組用 FC16_HW

#define MAX_DEVICES 4                      // 4 片模組

#define CLK_PIN   13

#define DATA_PIN  11

#define CS_PIN    10

MD_Parola P = MD_Parola(HARDWARE_TYPE, CS_PIN, MAX_DEVICES);

// 跑馬燈參數

uint8_t scrollSpeed = 100;                 // 數值越大越慢

textEffect_t scrollEffect = PA_SCROLL_LEFT;

textPosition_t scrollAlign = PA_LEFT;

uint16_t scrollPause = 1000;              // 停頓時間（毫秒）

#define BUF_SIZE 75

char curMessage[BUF_SIZE] = { "Hello World" };

char newMessage[BUF_SIZE] = { " " };

bool newMessageAvailable = false;

void readSerial() {

  static char *cp = newMessage;

  while (Serial.available()) {

    *cp = (char)Serial.read();

    if ((*cp == '\n') || (cp - newMessage >= BUF_SIZE - 2)) {

      *cp = '\0';

      cp = newMessage;

      newMessageAvailable = true;

    } else {

      cp++;

    }

  }

}

void setup() {

  Serial.begin(57600);

  Serial.println("[Parola LED Display]");

  Serial.println("請輸入訊息並按 Enter");

  P.begin();

  P.setIntensity(5);  // 亮度 0~15

  P.displayText(curMessage, scrollAlign, scrollSpeed, scrollPause, scrollEffect, scrollEffect);

}

void loop() {

  if (P.displayAnimate()) {

    if (newMessageAvailable) {

      strcpy(curMessage, newMessage);

      newMessageAvailable = false;

    }

    P.displayReset();

  }

  readSerial();

}