root/branch/smseck/sp4c12/sp4c1/SP4c1/SP4c1.c @ 849
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/* */
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/* FILE :sp4c1.c */
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/* DATE :Wed, Jun 02, 2021 */
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/* DESCRIPTION :main program file. */
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/* CPU GROUP :87B */
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/* */
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/* This file is generated by Renesas Project Generator (Ver.4.18). */
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/* NOTE:THIS IS A TYPICAL EXAMPLE. */
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/***********************************************************************/
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#include "sfr32c87.h"
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int trame_ok;
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//les prototypes
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void uart0_init (void);
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void uart0_tx(char c);
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void alphabet(char *chaine);
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char uart0_rx(void);
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int rectrame (char *buffer);
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typedef enum
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{
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synchronisation,
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reception,
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checksum,
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validation
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} etat_machine;
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etat_machine etat=synchronisation;
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//Initialisation du port s?rie 0
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void uart0_init(void)
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{
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u0mr = 0x05;
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u0brg = 0x20;
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u0c0 = 0x11;
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u0c1 = 0x05;
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pd6 = 0x08;
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ps0 = 0x08;
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psl0=0x00;
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}
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//Envoi d'un caract?re
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void uart0_tx(char c)
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{
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while(ti_u0c1 !=1);
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u0tb=c;
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}
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//Envoi une suite de caract?re de ?A? ? ?Z?
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void alphabet(char *chaine)
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{
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int i=0;
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while(chaine[i]!='\0')
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{
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uart0_tx(chaine[i]);
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i++;
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}
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}
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//fonction d'attente d'un caract?re sur la liaison s?rie et renvoie le caract?re suivant dans l'alphabet
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char uart0_rx(void)
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{
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while(ri_u0c1!=1);
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return u0rb;
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}
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/*int rectrame(char *buffer)
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{
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int i = 0;
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char caractere_recu;
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char checksum = '0';
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caractere_recu = uart0_rx(); //lecture du caractere recu*
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while ( caractere_recu != '$')//detection trame
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{
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i = 0;
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checksum = 0;
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}
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while ( caractere_recu != '*') //memorisation de la trame re?ue
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{
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caractere_recu = uart0_rx();
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buffer[i++] = caractere_recu;
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checksum = checksum ^ caractere_recu;
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}
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return i ;
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}*/
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int rectrame(char *buffer)
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{
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int k=0;
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int nombre_caractere_apres_etoile=0;
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int nombre_caractere=0;
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char caractere_recu;
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char checksum_trame=0;
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char checksum_fin_trame[];
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char checksum_calculer=0;
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while(1)
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{
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if (caractere_recu == '$')
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{
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nombre_caractere = 0;
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etat=reception;
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checksum_trame=0;
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}
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if (caractere_recu !='*')
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{
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buffer[nombre_caractere] = caractere_recu;
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nombre_caractere++;
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checksum_trame ^= caractere_recu;
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nombre_caractere_apres_etoile = 0;
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}
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else
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{
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etat =checksum;
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}
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if (nombre_caractere_apres_etoile==2)
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{
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etat=validation;
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checksum_calculer=hex_int(checksum_fin_trame);
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}
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nombre_caractere_apres_etoile++;
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if (checksum_trame==checksum_calculer)
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{
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etat = synchronisation;
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return nombre_caractere;
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}
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else
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etat = synchronisation;
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return 0;
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return buffer[];
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}
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}
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void main ()
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{
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char chaine[]= "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
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char buffer[80];
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uart0_init();
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while(1)
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alphabet(chaine);
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RecTrame(buffer);
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}
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