Liaison série

#define HICONFIG  	 	0x0000
#define FUNCTION_SET    	0x38
#define DISPLAY_CLEAR   	0x01
#define ENTRY_MODE_SET  	0x06
#define DISPLAY_ON      	0x0E
#define DISPLAY_OFF     	0x08
#define CURSOR_HOME     	0x02
#define RS              	8
#define EN              	9
#define MASK			0x01
#define TAILLE			100

void COM_PutChar(char c);
void LCD_Init(void);
void LCD_Control(char cmd);
void OutPortByte(char b);
void LCD_Putchar(char c);
void LCD_Puts(char *s);
void LCD_clear(void) ;
char KeyBoard_Scan(void);
void msDelay(unsigned long duration);
void COM_Init(int bauds);
void COM_Puts(char *s);
void COM_GetS(char *ch, char delimiteur, int taille);
char COM_GetChar(void);
void reception(void);
void emission(void);

int main(void)
{
    char c;

    brdInit();
    digOutConfig(HICONFIG);
    COM_Init(2400);

    do
    {
        LCD_Init();
	    printf("veuillez choisir le mode emission-reception\n(1)emission\n(2)reception\n\n");
        do
            c = KeyBoard_Scan();
        while(c!='1' && c!='2');
        if(c == '1')
            emission();
        if(c == '2')
            reception();
    }while(1);

    return 0;
}

void LCD_Init(void)
{
    LCD_Control(FUNCTION_SET);
    LCD_Control(FUNCTION_SET);
    LCD_Control(FUNCTION_SET);
    LCD_Control(DISPLAY_ON);
    LCD_Control(DISPLAY_CLEAR);
    LCD_Control(ENTRY_MODE_SET);
}

void LCD_Control(char cmd)
{
    digOut(RS,0);
    digOut(EN,1);
    msDelay(1);
    OutPortByte(cmd);
    msDelay(1);
    digOut(EN,0);
}

void OutPortByte(char b)
{
    int i;
    char bit;
    for(i=0; i<8 ; i++)
    {
   	bit = b & MASK ;
        digOut(i,bit);
        b = b>>1;
    }
}

void LCD_Putchar(char c)
{
    digOut(RS,1);
    digOut(EN,1);
    msDelay(1);
    OutPortByte(c);
    msDelay(1);
    digOut(EN,0);
}

void COM_Puts(char *s)
{
    do
        COM_PutChar(*s++);
    while(*s);
    COM_PutChar('\0');
}

void LCD_clear(void)
{
    LCD_Control(DISPLAY_CLEAR);
    msDelay(1000);
    LCD_Control(CURSOR_HOME);
}

void msDelay(unsigned long duration)
{
    unsigned long t;
    t = MS_TIMER+duration;
    while ((long)(MS_TIMER-t)<0)
        ;
}

char KeyBoard_Scan(void)
{
    char tp, liste_touches[13];
    int i, it, j, test;
    strcpy(liste_touches, "123456789*0#");
    do
    {
        for (i=0; i<4; i++)
        {
   	    for (j=0; j<4; j++)
      	    digOut(j,1);
            digOut(i,0);
            msDelay(1);
            for (j=0; j<3; j++)
            {
      	        test = digIn(j);
                if (test == 0)
                {
                    it = i*3+j;
                    tp = liste_touches[it];
                    while (!digIn(j))
                        ;
                    return tp;
                }
            }
        }
        digOut(i,1);
    }while(1);
}

void COM_PutChar(char c)
{
    int test;
    do
        test = serCputc(c);
    while (test != 1);
}

char COM_GetChar(void)
{
    int c;
    do
    {
     	c = serCgetc();
    }
    while(c == -1);
    return (char)c;
}

void COM_Init(int bauds)
{
    int test1, test2;
    do
        test1 = serCopen(bauds);
    while (test1 != 1);
    do
        test2 = serMode(0);
    while (test2 != 0);
    serCparity(0x01);
    serCdatabits(0x01);
}

void COM_GetS(char *ch, char delimiteur, int taille)
{
    int i, c;
    i = 0;
    do
    {
        c = COM_GetChar();
        if (c != delimiteur)
            ch[i++] = c;
    }while (c != delimiteur && i < taille);
    ch[i] = '\0';
}

void reception(void)
{
    char tab1[TAILLE];
    strcpy(tab1, "");

    COM_GetS(tab1, '\0', TAILLE);

    printf("                                        \r"); /* pour effacer l'ecran */
    printf("Voici le nombre recu >>  %s\n\n", tab1);

}

void emission(void)
{
    char go, c, tab[TAILLE];
    int i;
    i=0;
    go=0;

    printf("Saisir nombre et terminer par #\r");

    while (c != '#')
    {
       	c = KeyBoard_Scan();
       	LCD_Putchar(c);
        tab[i++] = c;
    }
    tab[--i]='\0';
	i=0;

    printf("                                        \r"); /* pour effacer l'ecran */
    printf("Nombre envoye >>  ");
    while (tab[i] != '\0') 
        putchar(tab[i++]);  //*/
    printf("\n\n");
    COM_Puts(tab);

    msDelay(20);
}