morse_code_transcoder/transcodeur/morse.c

/*
 * morse.c
 *
 * Created: 18/05/2021 15:47:14
 *  Author: yboujon1
 */ 

#include "main.h"
#include "morse.h"

unsigned char morse_library[LETTRES][7]= {  {'a',POINT,TRAIT,'\0'},
{'b',TRAIT,POINT,POINT,POINT,'\0'},
{'c',TRAIT,POINT,TRAIT,POINT,'\0'},
{'d',TRAIT,POINT,POINT,'\0'},
{'e',POINT,'\0'},
{'f',POINT,POINT,TRAIT,POINT,'\0'},
{'g',TRAIT,TRAIT,POINT,'\0'},
{'h',POINT,POINT,POINT,POINT,'\0'},
{'i',POINT,POINT,'\0'},
{'j',POINT,TRAIT,TRAIT,TRAIT,'\0'},
{'k',TRAIT,POINT,TRAIT,'\0'},
{'l',POINT,TRAIT,POINT,POINT,'\0'},
{'m',TRAIT,TRAIT,'\0'},
{'n',TRAIT,POINT,'\0'},
{'o',TRAIT,TRAIT,TRAIT,'\0'},
{'p',POINT,TRAIT,TRAIT,POINT,'\0'},
{'q',TRAIT,TRAIT,POINT,TRAIT,'\0'},
{'r',POINT,TRAIT,POINT,'\0'},
{'s',POINT,POINT,POINT,'\0'},
{'t',TRAIT,'\0'},
{'u',POINT,POINT,TRAIT,'\0'},
{'v',POINT,POINT,POINT,TRAIT,'\0'},
{'w',POINT,TRAIT,TRAIT,'\0'},
{'x',TRAIT,POINT,POINT,TRAIT,'\0'},
{'y',TRAIT,POINT,TRAIT,TRAIT,'\0'},
{'z',TRAIT,TRAIT,POINT,POINT,'\0'},
{'0',TRAIT,TRAIT,TRAIT,TRAIT,TRAIT,'\0'},
{'1',POINT,TRAIT,TRAIT,TRAIT,TRAIT,'\0'},
{'2',POINT,POINT,TRAIT,TRAIT,TRAIT,'\0'},
{'3',POINT,POINT,POINT,TRAIT,TRAIT,'\0'},
{'4',POINT,POINT,POINT,POINT,TRAIT,'\0'},
{'5',POINT,POINT,POINT,POINT,POINT,'\0'},
{'6',TRAIT,POINT,POINT,POINT,POINT,'\0'},
{'7',TRAIT,TRAIT,POINT,POINT,POINT,'\0'},
{'8',TRAIT,TRAIT,TRAIT,POINT,POINT,'\0'},
{'9',TRAIT,TRAIT,TRAIT,TRAIT,POINT,'\0'}
};

void envoyer_signe_morse(unsigned char signe_morse)
{
	switch(signe_morse){
		case POINT:
		start_timer0();
		start_timer1(ONEMS);
		wait_ocf1a_timer1();
		stop_timer0();
		wait_ocf1a_timer1();
		break;
		case TRAIT:
		start_timer0();
		start_timer1(3*ONEMS);
		wait_ocf1a_timer1();
		stop_timer0();
		start_timer1(ONEMS);
		wait_ocf1a_timer1();
		break;
		case INTERLETTRE:
		start_timer1(2*ONEMS);
		wait_ocf1a_timer1();
		break;
		case INTERMOT:
		start_timer1(10*ONEMS);
		wait_ocf1a_timer1();
		break;
		case FIN:
		resume_timer1();
		stop_timer1();
		break;
		default:
		break;
	};
}

void maj2min_convert(char *tab, int n)
{
	int i;
	for(i=0; i<=n; i++)
	{
		if(tab[i]>=65 && tab[i]<=90)    //si c'est une majuscule
		{
			tab[i]=tab[i]+32;           //la met en minuscule
		}
		else
		{
			tab[i]=tab[i];              //sinon rien
		};
	};
}

void latin2morse(char *tab, int n)
{
	int i=0;    //varie la chaine de caractere
	int j=0;    //varie la librarie
	do
	{
		switch(j)
		{
			case 0:
			lcd_char(tab,&i);
			maj2min_convert(tab,i);
			default:
			if(tab[i]==morse_library[j][0]) //verifie si le caractere correspond ? la librarie
			{
				library_checker(tab,&i,&j); //traduit dans la librairie et renvoie les deux variables pour continuer
			}
			else                            //si ce n'est pas dans la librarie
			{
				simple_terms(tab,&i,&j);    //traduit directement les termes plus simples
			};
			break;
		};
	}while(i<n);     //tant qu'on arrive ? la fin du tableau
}

void library_checker(char *tab,int* i,int* j)
{
	morselibrary_output(*j);                   //traduit en morse
	*j=0;                               //on revient au d?but de la librairie
	*i=*i+1;                            //on avance dans la chaine
	if(tab[*i]!=32 && tab[*i]!='\0')    //s'il n'y a pas d'espace ou de fin de mot apr?s, INTERLETTRE
	{
		envoyer_signe_morse(INTERLETTRE);
	};
}

void simple_terms(char *tab,int* i,int* j)
{
	switch(tab[*i])             //en fonction du caractere
	{
		case 32:                    //si c'est un espace INTERMOT
		envoyer_signe_morse(INTERMOT);
		*j=0;                   //on revient au d?but de la librairie
		*i=*i+1;                //on avance dans la chaine
		break;
		case '\0':
		envoyer_signe_morse(FIN);      //si c'est la fin de la chaine, FIN
		*j=0;                   //on revient au d?but de la librairie
		*i=*i+1;                //on avance dans la chaine
		break;
		default:                    //dans d'autres cas continuer l'analyse de la chaine
		*j=*j+1;                //on avance dans la tableau
	};
}

void morselibrary_output(int id)
{
	int y=1;        //on commence a la 2eme colonne
	do
	{
		if(etat==0){
		envoyer_signe_morse(morse_library[id][y]);       //fonction qui envoie un trait ou un point en fonction de la librarie
		y++;
		}
		else{
			//nothing
		};
	}
	while(morse_library[id][y]!='\0');  //jusqu'a la fin de la traduction dans la librairie
}

void lcd_char(char *tab,int* i)
{
	switch(*i)
	{
		case 0:
		LCD_Command(SECOND_LINE);
		printf("%c",tab[*i]);
		break;
		default:
		printf("%c",tab[*i]);	
	};
}