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大家，早安 ！所以我想制作一个程序，用摩尔斯电码传输光，然后接收器将其转换为 Arduino。

为了获得视觉效果，我选择放置一个 LED 和一个蜂鸣器。但是当我下载程序时，LED 会亮起，蜂鸣器也会亮起，而 LDR 甚至不会翻译发射器发送的内容。

所以这是接收者代码：

//Morse Code Binary Tree
//  Left child at 2n+1
// Right child at 2n+2
//         <.|->
//      .E       -T
//    .I  -A   .N  -M
//
const char MorseTree[] = {'\0','E', 'T', 'I', 'A', 'N', 'M', 'S',
                          'U', 'R', 'W', 'D', 'K', 'G', 'O', 'H',
                          'V', 'F', 'U', 'L', 'A', 'P', 'J', 'B',
                          'X', 'C', 'Y', 'Z', 'Q', '\0','\0','5',
                          '4', '\0','3', '\0','\0','\0','2', '\0',
                          '\0','+', '\0','\0','\0','\0','1', '6',
                          '=', '/', '\0','\0','\0','(', '\0','7',
                          '\0','\0','\0','8', '\0','9', '0', '\0',
                          '\0','\0','\0','\0','\0','\0','\0','\0',
                          '\0','\0','\0','?', '_', '\0','\0','\0',
                          '\0','"', '\0','\0','.', '\0','\0','\0',
                          '\0','@', '\0','\0','\0','\0','\0','\0',
                          '-', '\0','\0','\0','\0','\0','\0','\0',
                          '\0',';', '!', '\0',')', '\0','\0','\0',
                          '\0','\0',',', '\0','\0','\0','\0',':',
                          '\0','\0','\0','\0','\0','\0','\0'
                         };


int val = 0; // A Variable to Store the Light Value from the LDR
int ctrHigh = 0;
int ctrLow = 0;
int codePtr = 0;
int dotLen = 400;

void setup()
{
  Serial.begin(9600);// Start a Serial Connection
  Serial.print(codePtr);
}

void loop()
{
  val = analogRead(4);
  if (val >= 10)
  {
    ctrHigh++;
    ctrLow = 0;
    digitalWrite(13, HIGH);
    tone(9, 100);
  } else {
    ctrLow++;
    if ((ctrHigh >= dotLen) && (ctrHigh < dotLen*2)) {
      Serial.print(".");
      codePtr = (2*codePtr) + 1;
    } else if (ctrHigh >= dotLen * 2) {
      Serial.print("-");
      codePtr = (2*codePtr) + 2;
    } else {
      if(ctrLow == dotLen*2){
        Serial.print(MorseTree[codePtr]);
        codePtr = 0;
      }
    }

    ctrHigh = 0;
    digitalWrite(13, LOW);
    noTone(9);
  }
}

这段代码不长，但对我来说似乎很好，所以我没有看到问题

这是我编辑的照片。 莫尔斯接收器

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