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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <ctype.h>
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#define MAX_STRING_LENGTH 1024
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#define NUM_OF_LETTERS 36
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#define DASH_PAUSE_LENGTH 300000
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#define DOT_PAUSE_LENGTH 100000
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int main(){
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static const char LETTERS[NUM_OF_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', '0', '1', '2', '3', '4', '5', '6', '7', '8', '9'};
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static const char MORSE[NUM_OF_LETTERS][6] = {".-", "-...", "-.-.", "-..", ".", "..-.", "--.", "....", "..", ".---", "-.-", ".-..", "--", "-.", "---", ".--.", "--.-", ".-.", "...", "-", "..-", "...-", ".--", "-..-", "-.--", "--..", ".----", "..---", "...--", "....-", ".....", "-....", "--...", "---..", "----.", "-----"};
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char rawInputString[MAX_STRING_LENGTH];
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char inputString[MAX_STRING_LENGTH];
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int sizeOfInputString, sizeOfMorseCode;
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printf("Enter a string: ");
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scanf("%[^\n]s", &rawInputString);
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sizeOfInputString = strlen(rawInputString);
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strcpy(inputString, rawInputString);
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// change data in copied string if it is uppercase
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for (int i = 0; i < sizeOfInputString; i++){
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if (isupper(rawInputString[i])){
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inputString[i] = tolower(rawInputString[i]);
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}
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}
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printf("\"%s\" has length of %d\n", inputString, sizeOfInputString);
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// Loop through every character in the input string
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for (int i = 0; i < sizeOfInputString; i++){
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// Loop through every character in the list of letters
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for (int j = 0; j < NUM_OF_LETTERS; j++){
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// If the character in the input string matches the character the character from the list
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if (inputString[i] == LETTERS[j]){
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sizeOfMorseCode = strlen(MORSE[j]);
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// Print chracter in ascii in brackets before the morse code
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printf("(%c)", inputString[i], sizeOfMorseCode);
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// Loop through each character in the morse code for that chracter
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for (int k = 0; k < sizeOfMorseCode; k++){
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printf("%c", MORSE[j][k]);
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// Force flush buffer so it is garunteed to be written to, with the delays in between
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fflush(stdout);
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// If the morse character is a dash
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if (MORSE[j][k] == '-'){
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// ******* TODO: Replace with Arduino light code
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// Long delay code
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usleep(DASH_PAUSE_LENGTH);
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} else {
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// ******* TODO: Replace with Arduino light code
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// Short delay code
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usleep(DOT_PAUSE_LENGTH);
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}
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}
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printf(" ");
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}
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}
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}
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printf("\n");
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return 0;
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}
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