better serial

README.md

@@ -1,3 +1,16 @@
 # Eck Eck
 
 ![EckEckEckEck.gif](https://media-be.chewy.com/wp-content/uploads/2023/05/05165809/cat-chattering-chirping-at-birds.gif)
+
+
+### Current WIP issue:
+
+command issue:
+
+```
+.........................................................SR D
+...........SR 1
+..............................SR
+Processing input: D1
+Command: D -
+```

platformio.ini

@@ -10,5 +10,6 @@
 
 [env:nanoatmega328new]
 platform = atmelavr
-board = nanoatmega328new
+board = nanoatmega328
 framework = arduino
+monitor_speed = 115200

src/cw.cpp

@@ -0,0 +1,37 @@
+#include <Arduino.h>
+#include <ctype.h>
+
+uint8_t convertASCII(char c){
+    uint8_t result;
+    if(isalpha(c)){
+        if(islower(c)){
+            result = (uint8_t)c - 97;
+        }else{
+            result = (uint8_t)c - 65;
+        }
+    } else if (isdigit(c)){
+        result = (uint8_t)c - 22;
+    } else {
+        switch (c) {
+        case '-':
+            result = 36;
+            break;
+        case '.':
+            result = 36;
+            break;
+        case ',':
+            result = 36;
+            break;
+        case '?':
+            result = 36;
+            break;
+        case '/' || '\\':
+            result = 36;
+            break;
+        default:
+            result = 41;
+            break;
+        }
+    }
+    return result;
+}

src/cw.h

@@ -0,0 +1,55 @@
+#ifndef CW_H
+#define CW_H
+
+#include <Arduino.h>
+#include <ctype.h>
+
+// Morse code representation for each character (A-Z, 0-9)
+const char* morseCode[42] = {
+    ".-",    // A
+    "-...",  // B
+    "-.-.",  // C
+    "-..",   // D
+    ".",     // E
+    "..-.",  // F
+    "--.",   // G
+    "....",  // H
+    "..",    // I
+    ".---",  // J
+    "-.-",   // K
+    ".-..",  // L
+    "--",    // M
+    "-.",    // N
+    "---",   // O
+    ".--.",  // P
+    "--.-",  // Q
+    ".-.",   // R
+    "...",   // S
+    "-",     // T
+    "..-",   // U
+    "...-",  // V
+    ".--",   // W
+    "-..-",  // X
+    "-.--",  // Y
+    "--..",  // Z
+    "-----", // 0
+    ".----", // 1
+    "..---", // 2
+    "...--", // 3
+    "....-", // 4
+    ".....", // 5
+    "-....", // 6
+    "--...", // 7
+    "---..", // 8
+    "----.", // 9
+    "-...-",  // -
+    ".-.-.-", // .
+    "--..--", // ,
+    "..--..", // ?
+    "-..-.",  // /
+    ".-.-.",  // End Of Message (41)
+};
+uint8_t convertASCII(char c);
+const char* allowedCharacters = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789-.,?/\\";
+
+#endif // CW_H

src/main.cpp

@@ -14,56 +14,90 @@
 
 #include <Arduino.h>
 #include <EEPROM.h>
+#include <ctype.h>
+#include "cw.h"
 
 /* TODO:
  * - Implement sending strings
  * - Add OLED Support
- * - Add Potentiometer support
  */
 
-uint8_t input_dit = 3, input_dah = 6;
+boolean debug = true;
+uint8_t input_dit = 3, input_dah = 6, input_pot = A6;
 uint8_t output = 7;
 uint16_t dit = 200, dah = 500;
+uint8_t debounce = 50;
+uint16_t p_tol = 30, p_min = 50, p_max = 2000, p_buf = 0, p_cache = 0;
 String serial_buffer = "";
 char buf;
 
+void key_string(String);
+void adjust_length(uint16_t);
 void set_length(uint16_t, uint16_t);
 void send(bool);
 void process_input(String);
+void log(String);
 
 void setup() {
   Serial.begin(115200);
+  log("Set PinModes\n");
   pinMode(input_dit, INPUT_PULLUP);
   pinMode(input_dah, INPUT_PULLUP);
+  pinMode(input_pot, INPUT);
   pinMode(output, OUTPUT);
-  digitalWrite(output, HIGH);
+  digitalWrite(output, LOW);
-
+  log("Read EEPROM\n");
-  // dumbass
-  pinMode(9, OUTPUT);
-  digitalWrite(9, LOW);
-
   dit = EEPROM.read(20);
   dah = EEPROM.read(21);
+  debug = EEPROM.read(22);
+  p_buf = analogRead(input_pot);
+  // adjust_length(p_buf);
+  log("Setup complete\n");
+  log("Dit length: ");
+  log(String(dit));
+  log("\n");
+  log("Dah length: ");
+  log(String(dah));
+  log("\n");
+  log("Potentiometer: ");
+  log(String(p_buf));
+  log("\n");
 }
 
 void loop() {
-
+  if (!digitalRead(input_dah)){
-  if (digitalRead(input_dah)){
     send(true);
-  }else if (digitalRead(input_dit)){
+  }else if (!digitalRead(input_dit)){
     send(false);
   }
 
+  p_cache = analogRead(input_pot);
+  if (abs(p_cache - p_buf) > p_tol){
+    p_buf = p_cache;
+    if (p_cache < p_min){
+      p_cache = p_min;
+    } else if (p_cache > p_max){
+      p_cache = p_max;
+    }
+    adjust_length(p_cache);
+  }
 
   if (Serial.available() > 0) {
     buf = Serial.read();
     if ((uint16_t) buf == 13){
       process_input(serial_buffer);
       serial_buffer = "";
-    } else {
+    } else if ((uint8_t) buf > 27 ){
       serial_buffer += buf;
     }
   }
+
+  delay(debounce);
+}
+
+void adjust_length(uint16_t adjusted_length){
+  uint16_t new_dah = map(adjusted_length, 20, 1000, p_min, p_max);
+  set_length(new_dah/2, new_dah);
 }
 
 void process_input(String input){
@@ -71,12 +105,25 @@ void process_input(String input){
   // S<string>    send string as CW, unavail chars become " "
   // I<int>       set did length (ms)
   // A<Int>       set dah length (ms)
+  // D<0/1>       set debug mode
+  log("Processing input: ");
+  log(input);
+  log("\n");
   char command = input[0];
-  input.remove(0);
+  input.remove(0,1);
+  log("Command: ");
+  log(String(command));
+  log(" - ");
+  log(input);
+  log("\n");
   uint16_t length = 0;
+
+  if (islower(command)){
+    command = toupper(command);
+  }
   switch(command){
   case 'S':
-    // TODO
+    key_string(input);
     break;
   case 'I':
     length = input.toInt();
@@ -86,22 +133,67 @@ void process_input(String input){
     length = input.toInt();
     set_length(dit, length);
     break;
+  case 'D':
+    debug = boolean(input.toInt()==1);
+    log("Debug mode enabled");
+    EEPROM.write(22, debug);
+    break;
   default:
     Serial.println('?');
     break;
   }
 }
 
+void key_string(String input){
+  // log("Sending string: ");
+  // log(input);
+  // log("\n");
+  uint8_t b = 0; 
+  for (uint8_t i = 0; i < input.length(); i++){
+    char c = input[i];
+    if ((uint8_t)c != 32){
+      b = convertASCII(c);
+      for(uint8_t y = 0; y < strlen(morseCode[b]); y++){
+        send(morseCode[b][y] == '.');
+        delay(dit);
+      }
+      if(debug){
+        Serial.print(' ');
+      }
+      delay(dit);
+    } else {
+      if (debug){
+        Serial.println("");
+      }
+      delay(dah);
+    }
+  }
+}
+
 void send(bool b) {
-  digitalWrite(output, LOW);
+  if (debug){
-  delay(b?dit:dah);
+    Serial.print(b?"+":"=");
+  }
   digitalWrite(output, HIGH);
+  delay(b?dit:dah);
+  digitalWrite(output, LOW);
 }
 
 void set_length(uint16_t length_dit, uint16_t length_dah) {
+  log("Setting dit length to ");
+  log(String(length_dit));
+  log(" and dah length to ");
+  log(String(length_dah));
+  log("\n");
   dit = length_dit;
   dah = length_dah;
   EEPROM.write(20, length_dit);
   EEPROM.write(21, length_dah);
   return;
 }
+
+void log(String content){
+  if (debug){
+    Serial.print(content);
+  }
+}