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#include <stdio.h>
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#include <stdlib.h>
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#include <strings.h>
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#include <math.h>
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#include "trame.h"
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//Trames de tests ? modifier si n?cessaire.
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char * trames[]= {"$GPGSV,3,2,10,15,03,077,,18,04,041,42,19,85,271,,20,08,214,*7C",
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"$GPGSV,3,3,10,22,39,053,50,28,15,320,*7E",
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"$GPRMC,141914.00,A,4545.6424,N,00306.6036,E,0.4,99.4,010206,,*0C",
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"$GPGLL,4545.6424,N,00306.6036,E,141914.00,A*0E",
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"$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D", // 45 deg et 45,183 Min N (Latitude) et
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// 003 deg et 06,6036 Min E (longitude)
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"$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39",
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"$GPVTG,99.4,T,,M,0.4,N,0.7,K*57",
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"$GPZDA,141914.00,01,02,2006,00,00*69",
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0};
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typedef struct // definition de la structure
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{
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float latitude;
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float longitude;
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} Position;
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typedef struct // permet de definir une zone
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{
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Position rpos;
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float vitmax;
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}Zone;
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Zone zones[] = {{{44.208904, -1.297033},50}, {{47.478419, -0.563},70}, {{46.401488, 6.59049},50}, {{48.856614, 2.3522219},90}};
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int nb_Zones = 4;
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int trame_cmp(char* trame,char* type) // permet de verifier qu'on a la trame "GPGGA"
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{
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int i=0;
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do
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{
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if (trame[i+1] != type[i])
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{
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return 0;
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}
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i++;
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}while(type[i]!='\0');
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return 1;
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}
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int decode_int(char c) // permet de decoder en decimal
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{
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unsigned int carac;
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carac=c-48;
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if(carac<0 || carac>9)
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{
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return -1;
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}
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return carac;
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}
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//Fonction ? modifier !!!!!
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void traitement(char * trame) // permet de reconaitre les trame GPGGA
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{
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static int cpt=0;
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Position pos;
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cpt++;
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if (trame_cmp(trame,"GPGGA")==1)
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{
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printf ("%s\nLatitude: %f; Longitude: %f\n\n", trame, pos.latitude, pos.longitude);
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}
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}
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// Fonction convertissant la chaine de carac en float
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int decode_nombre(char * ch, int n)
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{
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int i, entier=0;
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//if (n > strlen(ch)){} Nop
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for(i=0;i<n;i++)
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{
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entier=entier*10;
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entier=entier+decode_int(ch[i]);
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}
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return entier;
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}
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// Fonction pour convertir latitude en float !!!!! Ne fonctionne pas a revoir
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float convlat (char * latitude)
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{
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float carac=0;
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int i;
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float val_sexa=decode_nombre(latitude,4);
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for (i=5;i<9;i++)
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{
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val_sexa=val_sexa*10;
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val_sexa=val_sexa+(decode_int(latitude[i]));
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}
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carac=(int)val_sexa/100;
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carac+=(val_sexa - carac*100)/60;
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return carac;
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}
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// Fonction pour convertir longitude en float
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float convlog (char * longitude)
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{
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float carac=0;
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int i;
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float val_sexa=decode_nombre(longitude,5);
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for (i=6;i<10;i++)
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{
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val_sexa=val_sexa*10;
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val_sexa=val_sexa+(decode_int(longitude[i]));
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}
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carac=(int)(val_sexa/100);
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carac += (val_sexa - carac*100)/60;
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return carac;
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}
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//Fonction generique
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float decode (char * ch)
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{
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int i=0;
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float calc=0;
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while(ch[i] !='\0')
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{
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i++;
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}
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if(i==9)
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{
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calc=convlat(ch);
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}
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else if(i==10)
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{
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calc=convlog(ch);
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}
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else
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{
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calc=100000.0;
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}
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return calc;
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}
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int decode_trame(char *trame , Position *p )
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{
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if (trame_cmp(trame,"GPGGA")) // si la bonne trame
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{
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int pos_virgule=0;
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int i=0;
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int j=0;
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int k=0;
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char Lat[10];
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char Long[12];
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while (trame[i] != '\0')
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{
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if(pos_virgule==2 && i !=26)
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{
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Lat[k]=trame[i];
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k++;
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}
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if(pos_virgule==4 && i !=39)
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{
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Long[j]=trame[i];
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j++;
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}
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if(trame[i]==',')
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{
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pos_virgule +=1;
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}
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i++;
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}
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p->latitude=convlat(Lat);
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p->longitude=convlog(Long);
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return 1;
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}
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else
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{
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return 0;
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}
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}
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//A refaire
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/*float calcule_distance(Position p_1, Position p_2)
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{
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float rpt = 0.01745329251;
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float distance;
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float delta =p_1.longitude-p_2.longitude;
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float dist = 6378.1*acos(sin(p_1.latitude*rpt)*sin(p_2.latitude*rpt)+ cos(p_1.latitude*rpt)*cos(p_2.latitude*rpt)*cos(delta*rpt));
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return dist;
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}
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float calcule_vitesse(Position p_1, Position p_2)
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{
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float vitesse;
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float dist = calcule_distance(p_1,p_2);
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vitesse = dist*3600;
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}*/
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int distance_a_la_plus_proche_zone(Position p, Zone r[], int nb_zones, float *d)
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{
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if (nb_zones ==0)
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{
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return -1;
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}
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else
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{
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int i;
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int curseur =0;
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float distance_min = 10000;
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float distance;
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for (i=0;i<nb_zones; i++)
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{
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distance =calcule_distance(p, r[i].rpos);
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if (distance <= distance_min)
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{
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distance_min = distance;
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curseur = i;
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}
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}
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*d = distance_min;
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return curseur;
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}
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}
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//Ajouter vos tests unitaires dans cette fonction.
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void tests_unitaires(void){
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if (5!=5){
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printf ("Erreur Test unitaire basique.\n");
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exit(-1);
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}
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//Tests unitaires de trame_cmp
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if (trame_cmp("$GPGGA suite chaine","GPGGA")!=1){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (trame_cmp("$GPRMC suite chaine","GPGGA")!=0){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (trame_cmp("$GPRMC... ", "GPRMC" )!=1){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (trame_cmp("$APRMC...", "GPGGA")!=0){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (decode_int('0')!=0)
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{
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printf ("Erreur Test unitaire decode_int\n");
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exit(-1);
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}
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if (decode_int('A')!=-1)
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{
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printf ("Erreur Test unitaire decode_int\n");
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exit(-1);
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}
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//Tests unitaires de conversion
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if (decode_nombre("12",2)!=12)
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{
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printf ("Erreur Test unitaire decode_nombre\n");
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exit(-1);
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}
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if (decode_nombre("327",3)!=327)
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{
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printf ("Erreur Test unitaire decode_nombre\n");
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exit(-1);
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}
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if (decode_nombre("125",2)!=12)
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{
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printf ("Erreur Test unitaire decode_nombre\n");
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exit(-1);
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}
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if (decode_nombre("987654321",2)!=98)
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{
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printf ("Erreur Test unitaire decode_nombre\n");
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exit(-1);
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}
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//Test unitaires de decode_trame
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Position test;
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if (decode_trame("$GPGSV,3,3,10,22,39,053,50,28,15,320,*7E", &test) != 0){
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printf("Erreur test unitaire decode_trame.\n");
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exit(-1);
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}
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if (decode_trame("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D", &test)!=1){
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printf("Erreur test unitaire decode_trame.\n");
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exit(-1);
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}
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if (decode_trame("$GPGGA,141925.00,4545.2410,N,00306.6046,E,1,05,3.4,501.4,M,,M,,*7D", &test)!=1){
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printf("Erreur test unitaire decode_trame.\n");
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exit(-1);
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}
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if (decode_trame("$GPRMC,141920.00,A,4545.6419,N,00306.6039,E,0.2,133.1,010206,,*38", &test) != 0){
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printf("Erreur test unitaire decode_trame.\n");
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exit(-1);
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}
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//Tests unitaires de distance a la plus proche zone
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//Tests unitaires de conversion Latitude et Longitude
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if (convlat("0045.0000")-(float) 0.75>0.0001)
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{
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printf("Erreur Test unitaire convlat\n");
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exit(-1);
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}
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if (convlog("00306.6036")- (float)3.11006>0.0001)
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{
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printf("Erreur Test unitaire convlog.\n");
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exit(-1);
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}
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if (convlog("00008.0015")-(float)0.133358>0.0001)
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{
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printf("Erreur Test unitaire convlog\n");
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exit(-1);
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}
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}
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// Ne pas modifier cette fonction
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int main(int argc,char ** argv)
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{
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tests_unitaires();
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// Affichage des trames definies dans la table trames.
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printf ("Trames de tests tableau trames:\n");
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int i=0;
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while (trames[i])
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traitement(trames[i++]);
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if (!trame_init())
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exit(-1);
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// Affichage des trames du fichier gps.log
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char *trame;
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printf ("Trames de tests du fichier gps.log\n");
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while ((trame = trame_suivante()))
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traitement(trame);
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return 0;
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}
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