Alpha 01

src/main.cpp

@@ -0,0 +1,107 @@
+// Copyright 2025 Elizabeth Cray
+//
+//    Licensed under the Apache License, Version 2.0 (the "License");
+//    you may not use this file except in compliance with the License.
+//    You may obtain a copy of the License at
+//
+//        http://www.apache.org/licenses/LICENSE-2.0
+//
+//    Unless required by applicable law or agreed to in writing, software
+//    distributed under the License is distributed on an "AS IS" BASIS,
+//    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+//    See the License for the specific language governing permissions and
+//    limitations under the License.
+
+#include <Arduino.h>
+#include <EEPROM.h>
+
+/* TODO:
+ * - Implement sending strings
+ * - Add OLED Support
+ * - Add Potentiometer support
+ */
+
+uint8_t input_dit = 3, input_dah = 6;
+uint8_t output = 7;
+uint16_t dit = 200, dah = 500;
+String serial_buffer = "";
+char buf;
+
+void set_length(uint16_t, uint16_t);
+void send(bool);
+void process_input(String);
+
+void setup() {
+  Serial.begin(115200);
+  pinMode(input_dit, INPUT_PULLUP);
+  pinMode(input_dah, INPUT_PULLUP);
+  pinMode(output, OUTPUT);
+  digitalWrite(output, HIGH);
+
+  // dumbass
+  pinMode(9, OUTPUT);
+  digitalWrite(9, LOW);
+
+  dit = EEPROM.read(20);
+  dah = EEPROM.read(21);
+}
+
+void loop() {
+
+  if (digitalRead(input_dah)){
+    send(true);
+  }else if (digitalRead(input_dit)){
+    send(false);
+  }
+
+
+  if (Serial.available() > 0) {
+    buf = Serial.read();
+    if ((uint16_t) buf == 13){
+      process_input(serial_buffer);
+      serial_buffer = "";
+    } else {
+      serial_buffer += buf;
+    }
+  }
+}
+
+void process_input(String input){
+  // Commands:
+  // S<string>    send string as CW, unavail chars become " "
+  // I<int>       set did length (ms)
+  // A<Int>       set dah length (ms)
+  char command = input[0];
+  input.remove(0);
+  uint16_t length = 0;
+  switch(command){
+  case 'S':
+    // TODO
+    break;
+  case 'I':
+    length = input.toInt();
+    set_length(length, dah);
+    break;
+  case 'A':
+    length = input.toInt();
+    set_length(dit, length);
+    break;
+  default:
+    Serial.println('?');
+    break;
+  }
+}
+
+void send(bool b) {
+  digitalWrite(output, LOW);
+  delay(b?dit:dah);
+  digitalWrite(output, HIGH);
+}
+
+void set_length(uint16_t length_dit, uint16_t length_dah) {
+  dit = length_dit;
+  dah = length_dah;
+  EEPROM.write(20, length_dit);
+  EEPROM.write(21, length_dah);
+  return;
+}