Morse flashlight functionality

esp32cam_marauder/MorseFlasher.ino

@@ -0,0 +1,95 @@
+// Created by ChatGPT
+const int LED = 4;
+const int dotDuration = 350;
+const int dashDuration = 3 * dotDuration;
+const int interLetterPause = 2 * dotDuration;
+const int interWordPause = 7 * dotDuration;
+const int bufferSize = 50;  // max length of the input buffer
+
+const char* morseAlphabet[] = {
+  ".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..",
+  "--", "-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-",
+  "-.--", "--.."
+};
+
+char inputBuffer[bufferSize + 1]; // input buffer
+int bufferIndex = 0;           // current index in the input buffer
+
+void morse_setup() {
+  pinMode(LED, OUTPUT);
+  //Serial.begin(9600);
+}
+
+void morse_loop() {
+  if (Serial.available()) {
+    bufferIndex = 0;
+    Serial.print("Received:");
+
+    while (Serial.available()) {
+      char input = Serial.read();
+      Serial.print(input);
+
+      // add the input to the buffer
+      inputBuffer[bufferIndex] = tolower(input);
+      bufferIndex = (bufferIndex + 1) % bufferSize;
+      if (input == 10 || input == 13) {
+        inputBuffer[bufferIndex++] = ' ';
+        Serial.flush();
+        break;
+      }
+    }
+  }
+
+  // repeat the last input forever
+  for (int i = 0; i < bufferIndex; i++) {
+    char input = inputBuffer[i];
+    if (input == ' ' || (input >= 'a' && input <= 'z') || (input >= '0' && input <= '9')) {
+      Serial.print(input);
+      if (input >= 'a' && input <= 'z') {
+        const char* pattern = morseAlphabet[input - 'a'];
+        for (int j = 0; pattern[j]; j++) {
+          if (pattern[j] == '.') {
+            dot();
+          } else if (pattern[j] == '-') {
+            dash();
+          }
+        }
+      } else if (input >= '0' && input <= '9') {
+        int num = input - '0';
+        for (int j = 0; j < num; j++) {
+          dot();
+          delay(dotDuration);
+        }
+      } else {
+        space();
+        //delay(interWordPause);
+      }
+      shortspace();
+    }
+  }
+}
+
+void dot() {
+  Serial.print(".");
+  digitalWrite(LED, HIGH);
+  delay(dotDuration);
+  digitalWrite(LED, LOW);
+  delay(dotDuration);
+}
+
+void dash() {
+  Serial.print("-");
+  digitalWrite(LED, HIGH);
+  delay(dashDuration);
+  digitalWrite(LED, LOW);
+  delay(dotDuration);
+}
+
+void shortspace() {
+  delay(interLetterPause);
+}
+
+void space() {
+  digitalWrite(LED, LOW);
+  delay(interWordPause);
+}

esp32cam_marauder/esp32cam_marauder.ino

@@ -160,6 +160,11 @@ void setup()
           for (;;)
             nanny_cam_loop();
 
+        case '.':  // Morse flas
+          morse_setup();
+          for (;;)
+            morse_loop();
+
         case 'w':  // Marauder
           goto continue_to_marauder;
       }