Révision 899
Ajouté par lefraisse il y a environ 4 ans
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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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#include <math.h>
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void uart0_init(void);
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void uart0_tx(char c);
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char uart0_rx();
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void alphabet(void);
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int hex2int(char*c);
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int rectrame(char* buffer);
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int hex2int(char*c);
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void main(void)
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{
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char c = 'A'; //Utilis? pour la fonction alphabet
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int i=0,j;
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char table[10][80];
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char buffer[80];
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uart0_init();
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while(1){
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rectrame(buffer);
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char trame[80];
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rectrame(trame);
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//alphabet(); test alphabet
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/* arriv?e d'un caract?re sur le port s?rie
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| ... | ... | |
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//Initialisaton du Registre U0C0
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clk1_u0c0 = 0;
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clk0_u0c0 = 1;
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crs_u0c0 = 1;
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crs_u0c0 = 0;
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crd_u0c0 = 1;
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nch_u0c0 = 0;
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ckpol_u0c0 = 0;
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| ... | ... | |
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u0brg = 0x20;
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//Initialisaton du Registre U0C1
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te_u0c1 = 0;
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re_u0c1 = 0;
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te_u0c1 = 1;
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re_u0c1 = 1;
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//uoirs_u0c1 = 0;
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u0rrm_u0c1 = 0;
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u0lch_u0c1 = 0;
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| ... | ... | |
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}
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void uart0_tx(char c){
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te_u0c1=1;
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crd_u0c0=1;
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crs_u0c0=0;
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while (ti_u0c1=0); //attente
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u0tb=c;
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}
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char uart0_rx(){
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while (ri_u0c1=0); //attente
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while (!ri_u0c1); //attente
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return u0rb;
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}
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| ... | ... | |
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}
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}
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int rectrame(char *buffer){
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int i=0,cheksum=0;
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while (uart0_rx()!='$'); //attente d'une trame
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while (uart0_rx()!='*'){
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buffer[i]=uart0_rx();
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i++;
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}
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}
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int hex2int(char *c){
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int i;
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int d;
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for (i=0;i<2;i++){
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//Pour des chiffres, la valeur hexad?cimal correspond ? la valeur d?cimal
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if ( (c[i]>'0') && (c[i]<'9')){
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d += (c[i] - '0')*pow(2,-4*(i-1));
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c[i]-='0';
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}
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//La valeur d?cimale de A est 10 et au max on aura la lettre F en hexa
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else if ((c[i]>'A')&&(c[i]<'F')){
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d += (c[i]-55)*pow(2,-4*(i-1));
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c[i]-=55;
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}
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}
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d=c[0]+16*c[1];
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return d;
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}
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int rectrame(char *buffer){
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int i=0,j=0;
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char checksum, c;
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char fin_trame[]={'0','0'};
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int verifchecksum;
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while (uart0_rx()!='$'); //attente d'une trame
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//Reception trame dans buffer et calcul du checksum avec un OU exclusif sur chaque caract?re de la trame
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c=uart0_rx();
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while (c!='*'){
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buffer[i]=c;
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c=uart0_rx();
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i++;
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if ((buffer[i]!='$')&&(buffer[i]!='*')){
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checksum^= buffer[i]; //ou exclusif sur chaque caract?re de la trame
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}
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}
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//R?c?ption des 2 caract?res apr?s le * de la trame dans la cha?ne fin_trame (utile pour le checksum)
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while (j<2){
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fin_trame[j]= uart0_rx();
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j++;
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}
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//V?rification entre le checksum calcul? tout au long de la trame et celui calcul? par la converion du champ en hexa apr?s '*'
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verifchecksum = hex2int(fin_trame);
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//if (verifchecksum!=checksum){
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// i=0;
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//}
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return i;
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}
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/*int irectrame(char *buffer){
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int etat =1
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switch(etat){
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case 1: if (
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}
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}*/
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Formats disponibles : Unified diff
Rectrame : debuger checksum