You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
106 lines
2.2 KiB
106 lines
2.2 KiB
// vim:filetype=arduino
|
|
#include <ctype.h>
|
|
#include <Arduino.h>
|
|
#include "telegraph.h"
|
|
|
|
const char* LETTERS[] = {
|
|
".-", // 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
|
|
};
|
|
|
|
const char* DIGITS[] = {
|
|
"-----", // 0
|
|
".----", // 1
|
|
"..---", // 2
|
|
"...--", // 3
|
|
"....-", // 4
|
|
".....", // 5
|
|
"-....", // 6
|
|
"--...", // 7
|
|
"---..", // 8
|
|
"----.", // 9
|
|
};
|
|
|
|
Telegraph::Telegraph(const int output_pin, const int dit_length) {
|
|
_output_pin = output_pin;
|
|
_dit_length = dit_length;
|
|
_dah_length = dit_length * 3;
|
|
pinMode(_output_pin, OUTPUT);
|
|
}
|
|
|
|
void Telegraph::output_code(const char* code) {
|
|
const unsigned int code_length = strlen(code);
|
|
|
|
for (unsigned int i = 0; i < code_length; i++) {
|
|
if (code[i] == '.') {
|
|
dit();
|
|
} else {
|
|
dah();
|
|
}
|
|
|
|
if (i != code_length - 1) {
|
|
delay(_dit_length);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Telegraph::dit() {
|
|
Serial.print(".");
|
|
output_symbol(_dit_length);
|
|
}
|
|
|
|
void Telegraph::dah() {
|
|
Serial.print("-");
|
|
output_symbol(_dah_length);
|
|
}
|
|
|
|
void Telegraph::output_symbol(const int length) {
|
|
digitalWrite(_output_pin, HIGH);
|
|
delay(length);
|
|
digitalWrite(_output_pin, LOW);
|
|
}
|
|
|
|
void Telegraph::send_message(const char* message) {
|
|
unsigned int message_length = (unsigned int)strlen(message);
|
|
for (unsigned int i = 0; i < message_length; i++) {
|
|
const char current_char = toupper(message[i]);
|
|
|
|
if (isalpha(current_char)) {
|
|
output_code(LETTERS[current_char - 'A']);
|
|
delay(_dah_length);
|
|
} else if (isdigit(current_char)) {
|
|
output_code(DIGITS[current_char - '0']);
|
|
delay(_dah_length);
|
|
} else if (current_char == ' ') {
|
|
Serial.print(" ");
|
|
delay(_dit_length * 7);
|
|
}
|
|
}
|
|
|
|
Serial.println();
|
|
}
|