Projet

Général

Profil

#include <stdio.h>
#include <stdlib.h>
#include <strings.h>
#include <math.h>
#include "trame.h"

typedef struct{
float latitude;
float longitude;
} Position;



//Trames de tests ? modifier si n?cessaire.
char * trames[]= {"$GPGSV,3,2,10,15,03,077,,18,04,041,42,19,85,271,,20,08,214,*7C",
"$GPGSV,3,3,10,22,39,053,50,28,15,320,*7E",
"$GPRMC,141914.00,A,4545.6424,N,00306.6036,E,0.4,99.4,010206,,*0C",
"$GPGLL,4545.6424,N,00306.6036,E,141914.00,A*0E",
"$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D",
"$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39",
"$GPVTG,99.4,T,,M,0.4,N,0.7,K*57",
"$GPZDA,141914.00,01,02,2006,00,00*69",
0};


int trame_cmp(char* trame,char* type){
int i = 1;
int res = 1;
while ((res == 1) && (type[i-1] != '\0')){
if (trame[i] != type[i-1]){
res = 0;
}
i++;
}
return res;
}

int decode_int(char c){
int val = c - '0';
if (val<0 || val>9){
val = -1;
}
return val;
}

int decode_nombre(char * ch, int n){
int i;
int res = 0;
for(i=0; i<n; i++){
res *= 10;
res += decode_int(ch[i]);
}
return res;
}

float conv_lat(char *ch){
float res = 0;
int i;
float val_sexa = decode_nombre(ch,4);

for (i=5; i<9; i++){
val_sexa += (decode_int(ch[i]))*pow(10,-i+4);
}

res = (int)(val_sexa/100);
res = res + (val_sexa - res*100)/60;

return res;
}

float conv_long(char *ch){
float res = 0;
int i;
float val_sexa = decode_nombre(ch,5);

for (i=6; i<10; i++){
val_sexa += (decode_int(ch[i]))*pow(10,-i+5);
}

res = (int)(val_sexa/100);
res = res + (val_sexa - res*100)/60;

return res;
}

float conversion(char *ch){
int i = 0;
float res = 0;
while (ch[i] != '\0'){
i++;
}
if (i == 9){
res = conv_lat(ch);
}
else if (i == 10){
res = conv_long(ch);
}
else{res = 1000.0;}
return res;
}


void decode_trame(char *trame, Position *p){
if (trame_cmp(trame,"GPGGA")==1){
char latitude[10];
char longitude[10];

int pos = 0;

int i;
int j = 0;
int k = 0;

for (i=0; i<40; i++){
if (trame[i] == ','){
pos ++;
}
if (pos == 2){
latitude[j] = trame[i];
j ++;
}
p->latitude = conversion(latitude);

if (pos == 4){
longitude[k] = trame[i];
k ++;
}
p->longitude = conversion(longitude);
}
}

return 0;
}

//Fonction ? modifier !!!!!
void traitement(char * trame){

printf ("> %s\n",trame);

}

//Ajouter vos tests unitaires dans cette fonction.
void tests_unitaires(void){
if (5!=5){
printf ("Erreur Test unitaire basique.\n");
exit(-1);
}
if (trame_cmp("$GPGGA suite chaine","GPGGA")!=1){
printf ("Erreur Test unitaire trame_cmp.\n");
exit(-1);
}
if (trame_cmp("$GPRMC suite chaine","GPGGA")!=0){
printf ("Erreur Test unitaire trame_cmp.\n");
exit(-1);
}
if (trame_cmp("$GPRMC... ", "GPRMC" )!=1){
printf ("Erreur Test unitaire trame_cmp.\n");
exit(-1);
}
if (trame_cmp("$APRMC...", "GPGGA")!=0){
printf ("Erreur Test unitaire trame_cmp.\n");
exit(-1);
}

if (decode_int('0')!=0){
printf ("Erreur Test unitaire decode_int.\n");
exit(-1);
}
if (decode_int('7')!=7){
printf ("Erreur Test unitaire decode_int.\n");
exit(-1);
}
if (decode_int('A')!=-1){
printf ("Erreur Test unitaire decode_int.\n");
exit(-1);
}

if (decode_nombre("123",3)!=123){
printf ("Erreur Test unitaire decode_nombre.\n");
exit(-1);
}
if (decode_nombre("7541",2)!=75){
printf ("Erreur Test unitaire decode_nombre.\n");
exit(-1);
}

if (fabs(conv_lat("3723.2475")-37.387458) >= pow(10,-6)){
printf ("Erreur Test unitaire conv_lat.\n");
exit(-1);
}
if (fabs(conv_long("00306.6036")-3.11006) >= pow(10,-6)){
printf ("Erreur Test unitaire conv_long.\n");
exit(-1);
}

if (fabs(conversion("3723.2475")-37.387458) >= pow(10,-6)){
printf ("Erreur Test unitaire conversion.\n");
exit(-1);
}
if (fabs(conversion("00306.6036")-3.11006) >= pow(10,-6)){
printf ("Erreur Test unitaire conversion.\n");
exit(-1);
}

}

// conv_lat(latitude)Ne pas modifier cette fonction
int main(int argc,char ** argv)
{

tests_unitaires();

// Affichage des trames definies dans la table trames.
printf ("Trames de tests tableau trames:\n");
int i=0;
while (trames[i])
traitement(trames[i++]);

if (!trame_init())
exit(-1);
// Affichage des trames du fichier gps.log
char *trame;
printf ("Trames de tests du fichier gps.log\n");
while ((trame = trame_suivante()))
traitement(trame);

return 0;
}
(2-2/5)