Travaux Pratiques » Polytech GE sp4a 2022

#include <stdio.h>

#include <stdlib.h>

#include <strings.h>

#include "trame.h"

#include <math.h>

/*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};

/*D?claration des structure*/

typedef struct

{

float latitude;

float longitude;

}Position;

typedef struct

{

Position rpos;

float vitmax;

}Zone;

/*D?finition des zone dangereuses*/

Zone zones[]=

{

{{44.788762, -3.012},50},

{{44.788762, -3.013},70},

};

/*Fonction qui renvoie 1 si la trame commence par la cha?ne de caract?re type et z?ro dans les autres cas*/

int trame_cmp(char *trame,char *type)

{

int i;

int res=1;

for (i=0;i<5;i++)

{

if(trame[i+1]!=type[i]) /*V?rification si la trame commence par GPGGA */

{

res=0;

}

}

return res;

}

/*Fonction qui renvoie la valeur d?cimale associ?e ? un caract?re donn? en param?tre.*/

int decode_int(char c)

{

int val;

val = c-48;/* Convertir caract?re ASCII en entier*/

if (val>9)

{

val=-1;

}

return val;

}

/*Fonction qui renvoie la valeur d?cimale des n premiers caract?res de la cha?ne ch en utilisant decode_int()*/

int decode_nombre(char *ch, int n)

{

int i;

int S=0;

for(i=0;i<n;i++)

{

S = (S*10)+ decode_int(ch[i]);

}

return S;

}

/*Fonction qui permet de convertir la cha?ne de caract?re contenant la latitude en nombre flottant*/

float latitude (char *ch)

{

float degre, min1, min2, result;

degre=(float)decode_nombre(&ch[0],2); /* acc?der au caract?re qui nous int?resse*/

min1=(float)decode_nombre(&ch[0+2],2);

min2=(float)decode_nombre(&ch[0+5],4);

result=degre+(min1/60)+(min2/600000);/* Additionner tout apr?s avoir tout converti en degr?*/

return result;

}

/* Fonction qui permet de convertir la cha?ne de caract?re contenant la longitude en nombre flottant */

float longitude (char *ch)

{

float degre, min1, min2, result;

degre=(float)decode_nombre(&ch[0],3);/*Idem*/

min1=(float)decode_nombre(&ch[0+3],2);

min2=(float)decode_nombre(&ch[0+6],4);

result=degre+(min1/60)+(min2/600000);/*Idem*/

return result;

}

/* Fonction g?n?rique qui d?code indiff?remment une latitude ou une longitude*/

float latitude_longitude (char * ch)

{

float result;

if(ch[4]==46)/*On determine la nature du carat?re 5 pour choisir la bonne op?ration ? faire*/

{

result=latitude(ch);

}

else

{

result=longitude(ch);

}

return result;

}

/*Fonction qui d?termine la latitude et la lonngitude de la position*/

float decode_trame(char *trame, Position *p)

{

p->latitude=latitude(trame);

p->longitude=longitude(trame);

}

float calcule_distance(Position p_1, Position p_2) /*Calcul de la distance entre deux positions*/

{

float dist;

dist=((2*3.14*6370)/360)*sqrt(pow((p_2.latitude-p_1.latitude),2)+pow((p_2.longitude-p_1.longitude),2));/* 6370 est le rayon de la terre*/

return dist;

}

float calcule_vitesse(Position p_1, Position p_2)/*calcul de la vitesse ? l'aide de la distance entre deux positions */

{

float vit;

vit=(calcule_distance(p_1,p_2)*3600);

return vit;

}

/*Fonction qui renvoie le num?ro de la zone la plus proche du point p ainsi que sa distance.*/

int distance_a_la_plus_proche_zone(Position p, Zone r[], int nb_zones, float *d)

{

int i,j;

float D0;

D0=calcule_distance(p, r[0].rpos); /*Initialisation d'une distance de r?f?rence qui est la distnace initiale*/

if (nb_zones>0)

{

for(i=1;i>nb_zones;i++)

{

*d=calcule_distance(p,r[i].rpos);

if(*d<D0)

{

j=i; /* changement de l'indice */

D0=*d; /* changement de la r?f?rence*/

}

}

return j;

}

else

{

return -1;

}

}

/*Fonction ? modifier !!!!!*/

void traitement(char * trame)

{

/*static int cpt=0;

cpt++;

if (trame_cmp(trame,"GPGGA"))

{

printf ("> %s\n",trame); /*Afficher que les trames GPGGA*/

}*/

Position P,P0;

float vit, dist;

int zone_nb, trameOK, alarme=0, Dmax=1;/*Dmax:distance maximale pour d?clencher l'alarme*/

trameOK=1;

if (trame_cmp(trame,"GPGGA")==1)

{

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

if(trameOK==1)

{

trameOK=0;

decode_trame(trame,&P);

if(&P)

{

vit=calcule_vitesse(P,P0);

zone_nb=distance_a_la_plus_proche_zone(P,zones,zone_nb,&dist);

if((dist<Dmax)&(vit>zones[zone_nb].vitmax))

{

alarme=1;

}

if(alarme==1)

{

printf("alarme ON\n");

}

else

{

printf("alarme OFF\n");

}

P0=P;

}

printf("vitesse : %.2f distance : %.2f\n\n",vit,dist);

}

}

}

/*Ajouter vos tests unitaires dans cette fonction.*/

void tests_unitaires(void){

/*Test de v?rification du bon fonctionnement*/

if (5!=5)

{

printf ("Erreur Test unitaire basique.\n");

exit(-1);

}

/*Tests de la fonction tram_cmp*/

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);

}

/*Test de la fonction decode_int*/

if (decode_int('2')!=2)

{

printf ("Erreur Test unitaire decode_int.\n");

exit(-1);

}

/*Test de la fonction decode_nombre*/

if (decode_nombre("1234",2)!=12)

{

printf ("Erreur Test unitaire decode_nombre.\n");

exit(-1);

}

/*Test de la fonction latitude*/

if (latitude("3723.2475")-37.387458>0.0001)

{

printf ("Erreur Test unitaire latitude.\n");

exit(-1);

}

/*Test de la fonction longitude */

if (longitude("00306.6043")-3.110071667>0.01)

{

printf ("Erreur Test unitaire longitude.\n");

exit(-1);

}

/*Tests de la fonction latitude_longitude*/

if (latitude_longitude("00306.6043")-3.110071667>0.01)

{

printf ("Erreur Test unitaire latitude_longitude.\n");

exit(-1);

}

if (latitude_longitude("3723.2475")-37.387458>0.0001)

{

printf ("Erreur Test unitaire latitude_longitude.\n");

exit(-1);

}

if (latitude_longitude("3452.1463")-34.869105>0.0001)

{

printf ("Erreur Test unitaire latitude_longitude.\n");

exit(-1);

}

if (latitude_longitude("03815.1974")-38.25329>0.01)

{

printf ("Erreur Test unitaire latitude_longitude.\n");

exit(-1);

}

/*Position p;*/ /*Tests de la fonction decode_trame*/

/*if (decode_trame("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D",&p)!=1)

{

printf ("Erreur Test unitaire decode_trame.\n");

exit(-1);

}

if (decode_trame("$GPGGA,141918.00,4545.0968,N,00306.6034,E,1,05,3.4,498.8,M,,M,,*7A",&p)!=1)

{

printf ("Erreur Test unitaire decode_trame.\n");

exit(-1);

}

if (decode_trame("$GPGGA,141925.00,4545.2410,N,00306.6046,E,1,05,3.4,501.4,M,,M,,*7C",&p)!=1)

{

printf ("Erreur Test unitaire decode_trame.\n");

exit(-1);

}

if (decode_trame("$GPGGA,141922.00,4545.1810,N,00306.6046,E,1,05,3.4,500.6,M,,M,,*77",&p)!=1)

{

printf ("Erreur Test unitaire decode_trame.\n");

exit(-1);

}*/

/*Test du calcul de la distance et de la vitesse pour un intervalle de 1s*/

/*Position p_1, p_2, p_3;

p_2.latitude=latitude("$GPGGA,141915.00,4545.0242,N,00306.6039,E,1,05,3.4,499.5,M,,M,,*75");

p_2.longitude=longitude("$GPGGA,141915.00,4545.0242,N,00306.6039,E,1,05,3.4,499.5,M,,M,,*75");

p_1.latitude=latitude("$GPGGA,141917.00,4545.0726,N,00306.6039,E,1,05,3.4,499.6,M,,M,,*73");

p_1.longitude=longitude("$GPGGA,141917.00,4545.0726,N,00306.6039,E,1,05,3.4,499.6,M,,M,,*73");

printf("distance: %f\n",calcule_distance(p_1,p_2));

printf("vitesse: %f\n",calcule_vitesse(p_1,p_2));*/

/*Test pour calculer la distance entre deux villes*/

/*Paris*/

/*p_1.latitude = 48.8588897;

p_1.longitude = 2.320041;*/

/*Lyon*/

/*p_2.latitude = 45.7578137;

p_2.longitude = 4.8320114;*/

/*Toulouse*/

/*p_3.latitude = 43.7520597;

p_3.longitude = 1.2877314;

printf("distance Paris-Lyon : %f\n",calcule_distance(p_1,p_2));

printf("distance Lyon-Toulouse : %f\n",calcule_distance(p_2,p_3));*/

int nb_zone; /*Test de la fonction distance_a_la_plus_proche_zone*/

float *d;

Position p,p1,p2;

nb_zone=distance_a_la_plus_proche_zone(p,zones,2,&d);

p1.latitude=44.7887762;

p1.longitude=-3.012;

p2.latitude=44.7891220;

p2.longitude=-3.013;

decode_trame("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D", &p);

printf("D1 est : %f\n",calcule_distance(p, p1));

printf("D2 est : %f\n",calcule_distance(p, p2));

if(nb_zone!=0)

{

printf("Erreur dans la zone la plus proche");

exit(-1);

}

}

/* 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;

}

$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,,*79

$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

$GPGSV,3,1,10,01,13,142,46,03,48,144,47,11,41,277,,14,27,104,42*75

$GPGSV,3,2,10,15,03,077,,18,04,041,41,19,85,271,,20,08,214,*7F

$GPGSV,3,3,10,22,39,053,48,28,15,320,*77

$GPRMC,141915.00,A,4545.6423,N,00306.6039,E,0.6,110.2,010206,,*31

$GPGLL,4545.6423,N,00306.6039,E,141915.00,A*07

$GPGGA,141915.00,4545.0242,N,00306.6039,E,1,05,3.4,499.5,M,,M,,*75

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,110.2,T,,M,0.6,N,1.2,K*67

$GPZDA,141915.00,01,02,2006,00,00*68

$GPGSV,3,1,10,01,13,142,45,03,48,144,47,11,41,277,,14,27,104,41*75

$GPGSV,3,2,10,15,03,077,,18,04,041,42,19,85,271,,20,08,214,*7C

$GPGSV,3,3,10,22,39,053,49,28,15,320,*76

$GPRMC,141916.00,A,4545.6422,N,00306.6037,E,0.1,211.1,010206,,*3B

$GPGLL,4545.6422,N,00306.6037,E,141916.00,A*0B

$GPGGA,141916.00,4545.0484,N,00306.6037,E,1,05,3.4,500.0,M,,M,,*70

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,211.1,T,,M,0.1,N,0.2,K*60

$GPZDA,141916.00,01,02,2006,00,00*6B

$GPGSV,3,1,10,01,13,142,45,03,48,144,48,11,41,277,,14,27,104,43*78

$GPGSV,3,2,10,15,03,077,,18,04,041,44,19,85,271,,20,08,214,*7A

$GPGSV,3,3,10,22,39,053,48,28,15,320,*77

$GPRMC,141917.00,A,4545.6422,N,00306.6039,E,0.3,122.3,010206,,*37

$GPGLL,4545.6422,N,00306.6039,E,141917.00,A*04

$GPGGA,141917.00,4545.0726,N,00306.6039,E,1,05,3.4,499.6,M,,M,,*73

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,122.3,T,,M,0.3,N,0.5,K*64

$GPZDA,141917.00,01,02,2006,00,00*6A

$GPGSV,3,1,10,01,13,142,45,03,48,144,46,11,41,277,,14,27,104,41*74

$GPGSV,3,2,10,15,03,077,,18,04,041,42,19,85,271,,20,08,214,*7C

$GPGSV,3,3,10,22,39,053,48,28,15,320,*77

$GPRMC,141918.00,A,4545.6421,N,00306.6034,E,0.5,252.2,010206,,*35

$GPGLL,4545.6421,N,00306.6034,E,141918.00,A*05

$GPGGA,141918.00,4545.0968,N,00306.6034,E,1,05,3.4,498.8,M,,M,,*7A

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,252.2,T,,M,0.5,N,1.0,K*63

$GPZDA,141918.00,01,02,2006,00,00*65

$GPGSV,3,1,10,01,13,142,45,03,48,144,48,11,41,277,,14,27,104,42*79

$GPGSV,3,2,10,15,03,077,,18,04,041,42,19,85,271,,20,08,214,*7C

$GPGSV,3,3,10,22,38,053,49,28,15,320,*77

$GPRMC,141919.00,A,4545.6420,N,00306.6040,E,0.6,95.2,010206,,*0C

$GPGLL,4545.6420,N,00306.6040,E,141919.00,A*06

$GPGGA,141919.00,4545.1210,N,00306.6040,E,1,05,3.4,500.2,M,,M,,*77

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,95.2,T,,M,0.6,N,1.2,K*5B

$GPZDA,141919.00,01,02,2006,00,00*64

$GPGSV,3,1,10,01,13,142,46,03,48,144,49,11,41,277,,14,27,104,42*7B

$GPGSV,3,2,10,15,03,077,,18,04,041,43,19,85,271,,20,08,214,*7D

$GPGSV,3,3,10,22,38,053,49,28,15,320,*77

$GPRMC,141920.00,A,4545.6419,N,00306.6039,E,0.2,133.1,010206,,*38

$GPGLL,4545.6419,N,00306.6039,E,141920.00,A*08

$GPGGA,141920.00,4545.1410,N,00306.6039,E,1,05,3.4,500.0,M,,M,,*77

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,133.1,T,,M,0.2,N,0.4,K*66

$GPZDA,141920.00,01,02,2006,00,00*6E

$GPGSV,3,1,10,01,13,142,45,03,48,144,46,11,41,277,,14,27,104,43*76

$GPGSV,3,2,10,15,03,077,,18,04,041,41,19,85,271,,20,08,214,*7F

$GPGSV,3,3,10,22,38,053,50,28,15,320,*7F

$GPRMC,141921.00,A,4545.6419,N,00306.6043,E,0.6,103.1,010206,,*33

$GPGLL,4545.6419,N,00306.6043,E,141921.00,A*04

$GPGGA,141921.00,4545.1610,N,00306.6043,E,1,05,3.4,499.8,M,,M,,*70

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,103.1,T,,M,0.6,N,1.1,K*65

$GPZDA,141921.00,01,02,2006,00,00*6F

$GPGSV,3,1,10,01,13,142,46,03,48,144,48,11,41,277,,14,27,104,42*7A

$GPGSV,3,2,10,15,03,077,,18,04,041,42,19,85,271,,20,08,214,*7C

$GPGSV,3,3,10,22,38,053,48,28,15,320,*76

$GPRMC,141922.00,A,4545.6418,N,00306.6046,E,0.7,96.9,010206,,*00

$GPGLL,4545.6418,N,00306.6046,E,141922.00,A*03

$GPGGA,141922.00,4545.1810,N,00306.6046,E,1,05,3.4,500.6,M,,M,,*77

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,96.9,T,,M,0.7,N,1.3,K*53

$GPZDA,141922.00,01,02,2006,00,00*6C

$GPGSV,3,1,10,01,13,142,47,03,48,144,46,11,41,277,,14,27,104,43*74

$GPGSV,3,2,10,15,03,077,,18,04,041,43,19,85,271,,20,08,214,*7D

$GPGSV,3,3,10,22,38,053,48,28,15,320,*76

$GPRMC,141923.00,A,4545.6417,N,00306.6046,E,0.3,113.6,010206,,*39

$GPGLL,4545.6417,N,00306.6046,E,141923.00,A*0D

$GPGGA,141923.00,4545.2010,N,00306.6046,E,1,05,3.4,500.6,M,,M,,*7D

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,113.6,T,,M,0.3,N,0.7,K*61

$GPZDA,141923.00,01,02,2006,00,00*6D

$GPGSV,3,1,10,01,13,142,45,03,48,144,47,11,41,277,,14,27,104,41*75

$GPGSV,3,2,10,15,03,077,,18,04,041,43,19,85,271,,20,08,214,*7D

$GPGSV,3,3,10,22,38,053,49,28,15,320,*77

$GPRMC,141924.00,A,4545.6416,N,00306.6044,E,0.2,197.7,010206,,*31

$GPGLL,4545.6416,N,00306.6044,E,141924.00,A*09

$GPGGA,141924.00,4545.2210,N,00306.6044,E,1,05,3.4,500.5,M,,M,,*79

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,197.7,T,,M,0.2,N,0.4,K*6E

$GPZDA,141924.00,01,02,2006,00,00*6A

$GPGSV,3,1,10,01,13,142,45,03,48,144,47,11,41,277,,14,27,104,40*74

$GPGSV,3,2,10,15,03,077,,18,04,041,43,19,85,271,,20,08,214,*7D

$GPGSV,3,3,10,22,38,053,49,28,15,320,*77

$GPRMC,141925.00,A,4545.6415,N,00306.6046,E,0.2,130.8,010206,,*33

$GPGLL,4545.6415,N,00306.6046,E,141925.00,A*09

$GPGGA,141925.00,4545.2410,N,00306.6046,E,1,05,3.4,501.4,M,,M,,*7C

$GPGSA,A,3,,03,,22,14,,01,,18,,,,3.9,3.4,1.9*39

$GPVTG,130.8,T,,M,0.2,N,0.5,K*6D

$GPZDA,141925.00,01,02,2006,00,00*6B

$GPGSV,3,1,10,01,13,142,45,03,48,144,47,11,41,277,,14,27,104,40*74

$GPGSV,3,2,10,15,03,077,,18,04,041,41,19,85,271,,20,08,214,*7F

$GPGSV,3,3,10,22,38,053,47,28,15,320,*79

$GPRMC,141926.?E,0.2,260.8,010206,,*34

/* Fichier trames.c - Gestion et decodage des trames */

/* Ce fichier sera fourni */

#include <stdio.h>

#include <stdlib.h>

#include "trame.h"

#define FICHIER_TRAMES "gps.log" /* Par exemple */

#define MAX_FRAME_LENGTH 80

static char trame_buf[MAX_FRAME_LENGTH];

static FILE *trame_fic;

int trame_init(void)

{

trame_fic = fopen(FICHIER_TRAMES, "r");

if (trame_fic)

return 1;

fprintf(stderr, "Impossible d'ouvrir le fichier %s\n", FICHIER_TRAMES);

return 0;

}

char *trame_suivante(void)

{

return fgets(trame_buf, MAX_FRAME_LENGTH-1, trame_fic);

}

<?xml version="1.0" encoding="UTF-8" standalone="yes" ?>

<CodeBlocks_project_file>

<FileVersion major="1" minor="6" />

<Project>

<Option title="sp4a" />

<Option pch_mode="2" />

<Option compiler="gcc" />

<Build>

<Target title="Debug">

<Option output="sp4a" prefix_auto="1" extension_auto="1" />

<Option object_output=".\debug" />

<Option type="1" />

<Option compiler="gcc" />

<Compiler>

<Add option="-g" />

</Compiler>

</Target>

</Build>

<Compiler>

<Add option="-Wall" />

</Compiler>

<Unit filename="gps.log" />

<Unit filename="main.c">

<Option compilerVar="CC" />

</Unit>

<Unit filename="trame.c">

<Option compilerVar="CC" />

</Unit>

<Unit filename="trame.h" />

<Extensions>

<code_completion />

<envvars />

<debugger />

<lib_finder disable_auto="1" />

</Extensions>

</Project>

</CodeBlocks_project_file>

int trame_init(void);

char * trame_suivante(void);