Travaux Pratiques » Polytech GE sp4a 2022

#include <stdio.h>

#include <stdlib.h>

#include <strings.h>

#include <math.h>

#include "trame.h"

#define PI 3.14159

//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};

//Fontion trame_cmp

int trame_cmp(char * trame, char * type)

{

int i;

int egalite = 1;

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

{

if (trame[i+1]!= type[i])

{

egalite=0;

}

}

return egalite;

}

//Fonction decode_int

int decode_int(char c)

{

if ((c<'A') && (c>='0'))

{

c =c-48;

}

else

{

c=-1;

}

return c;

}

//test decode_int

void test_decode_int(void)

{

if (decode_int('0')!=0){

printf("Erreur test unitaire");

exit(-1);

}

if (decode_int('1')!=1){

printf("Erreur test unitaire");

exit(-1);

}

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

printf("Erreur test unitaire");

exit(-1);

}

if (decode_int('3')!=3){

printf("Erreur test unitaire");

exit(-1);

}

if (decode_int('4')!=4){

printf("Erreur test unitaire");

exit(-1);

}

if (decode_int('5')!=5){

printf("Erreur test unitaire");

exit(-1);

}

if (decode_int('6')!=6){

printf("Erreur test unitaire");

exit(-1);

}

if (decode_int('7')!=7){

printf("Erreur test unitaire");

exit(-1);

}

if (decode_int('8')!=8){

printf("Erreur test unitaire");

exit(-1);

}

if (decode_int('9')!=9){

printf("Erreur test unitaire");

exit(-1);

}

if (decode_int('A')!=-1){

printf("Erreur test unitaire");

exit(-1);

}

}

//Fonction decode_nombre

int decode_nombre(char * ch, int n)

{

int p=0;

int i;

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

{

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

}

return p;

}

//Test de decode_nombre

int test_decode_nombre()

{

if (decode_nombre("123",3)!=123)

{

printf("Erreur test nombre1");

exit(-1);

}

if (decode_nombre("987654321",2)!=98)

{

printf("Erreur test nombre2");

exit(-1);

}

}

//Fonction latitude en nombre flottant

int latitude(char l[])

{

int n=0;

int degree=0;

int minutes=0;

int lati=0;

while (l[n]!='\0')

{

n=n+1;

}

if (n==9)

{

degree = ((l[0]-48)*10+(l[1]-48));

minutes = ((l[2]-48)*10+(l[3]-48)+(l[5]-48)*0.1+(l[6]-48)*0.01+(l[7]-48)*0.001+(l[8]-48)*0.0001);

lati = degree + minutes/60;

}

else

{

printf("Erreur de saisie");

}

return lati;

}

// Fonction longitude en nombre flotttant

int longitude(char l[])

{

int n=0;

int degree=0;

int minutes=0;

int longi=0;

while (l[n]!='\0')

{

n=n+1;

}

if (n==10)

{

degree = ((l[0]-48)*100+(l[1]-48)*10+(l[2]-48));

minutes = ((l[3]-48)*10+(l[4]-48)+(l[6]-48)*0.1+(l[7]-48)*0.01+(l[8]-48)*0.001+(l[9]-48)*0.0001);

longi = degree + minutes/60;

}

else

{

printf("Erreur de saisie");

}

return longi;

}

//Fonction latitude/longitude nombre flottant

float decode_lat_long (char c[]) {

int n=0, degre=0,i=1,b;

float min=0, secondes=0, res=0,p;

do{

n++;

} while (c[n]!='.');

if (n==4) {

degre = (c[0]-48)*10+(c[1]-48);

min = (c[2]-48)*10+(c[3]-48);

} else {

degre = (c[0]-48)*100+(c[1]-48)*10+(c[2]-48);

min = (c[3]-48)*10+(c[4]-48);

}

n++;

do {

p=1;

for (b=0;b<i;b++) {

p=p*0.1;

}

secondes= secondes + (c[n]-48)*p;

i++;

n++;

} while (c[n]!='\0');

res = degre + (min+secondes)/60;

return res;

}

//Test de latitude

int test_latitude()

{

if (latitude("3723.2475")-37.387458<0.000001&& 37.387458-latitude("3723.2475")<0.000001)

{

printf("Erreur test latitude");

exit(-1);

}

}

//Test de longitude

int test_longitude()

{

if (longitude("00306.6036")-37.387458<0.000001 && 37.387458-latitude("00306.6036")<0.000001)

{

printf("Erreur test latitude");

exit(-1);

}

}

//Test de latitude/longitude

void test_decode_lat_long(void) {

float a,b,c,e;

a= 37.387458 - decode_lat_long("3723.2475");

c= 45.760703 - decode_lat_long("4545.6422");

b=3.11006 - decode_lat_long("00306.6036");

e= 3.110077 - decode_lat_long("00306.6046");

if (a*a > 0.000001){

printf("erreur");

exit(-1);

}

if (b*b > 0.000001){

printf("erreur2");

exit(-1);

}

if (c*c > 0.000001){

printf("erreur2");

exit(-1);

}

if (e*e > 0.000001){

printf("erreur2");

exit(-1);

}

}

//Fonction ? modifier !!!!!

void traitement(char * trame)

{

static int cpt=0;

cpt++;

position p;

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

{

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

decode_trame(trame,&p);

printf("latitude= %f , longitude= %f \n",p.latitude,p.longitude);

}

}

/* TP SP4A N?2 */

typedef struct{

float latitude;

float longitude;

} position;

position p,p1,p2;

typedef struct {

position pos;

float vitesse;

}zone;

zone zones[]= {

{{44.788776, -3.01200}, 50},

{{44.789122, -3.01300}, 70},

{{45.896654, 3.224569}, 60},

{{46.251478, 4.000000}, 80},

{{47.353711, 5.199235}, 90},

};

//Fonction decode_tram v2

int decode_trame_v2(char *l, position *p)

{

int degree_latitude,minutes_latitude=0,degree_longitude,minutes_longitude=0;

double res_latitude=0,res_longitude=0;

degree_longitude=decode_int(l[29])*100+decode_int(l[30])*10+decode_int(l[31]);

minutes_longitude=(decode_int(l[32])*10+decode_int(l[33])+decode_int(l[35])*0.1+decode_int(l[36])*0.01+decode_int(l[37])*0.001+decode_int(l[38])*0.0001)/60;

res_longitude=degree_longitude+minutes_longitude;

if(l[27]=='S') //identifier si la latitude est nord ou sud

{

res_latitude = -res_latitude;

}

degree_latitude=decode_int(l[17])*10+decode_int(l[18]);

minutes_latitude=(decode_int(l[19])*10+decode_int(l[20])+decode_int(l[22])*0.1+decode_int(l[23])*0.01+decode_int(l[24])*0.001+decode_int(l[25])*0.0001)/60;

res_latitude=degree_latitude+minutes_latitude;

if(l[40]=='W')

{

res_longitude= -res_longitude;

}

p ->longitude=res_longitude;

p ->latitude=res_latitude;

}

//Test decode_trame

/*void test_decode_tram (void)

{

decode_trame_v2("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D",&p);

if(fabs(fabs(p.latitude)-46.759373 >10-6))

{

printf ("Erreur test latitude decode_trame_v2");

exit(-1);

}

if(fabs(fabs(p.longitude)-101.202358 >10-6))

{

printf ("Erreur test longitude decode_trame_v2");

exit(-1);

}

}

*/

//Fonction calcul_distance

float clacul_distance(position *p1, position *p2)

{

float distance;

distance=acos(sin(PI * p1 ->latitude/180.0)*sin(PI * p2 ->latitude/180.0)+cos(PI* p1 ->latitude/180.0)*cos(PI* p2 ->latitude/180.0)*cos(PI*(fabs(p1 ->longitude - p2 ->longitude))/180.0))*6371;

return (float) distance;

}

//Fonction calcul_vitesse

float clacul_vitesse(position *p1, position *p2)

{

float vitesse;

vitesse=calcul_distance(&p1,&p2);

vitesse=vitesse*3600;

return vitesse;

}

/*Test calcul_vitesse

float test_calcul_vitesse()

{

position p1,p2;

float v;

decode_tram_v1("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D", &p1);

decode_tram_v1("$GPGGA,141915.00,4545.0242,N,00306.6039,E,1,05,3.4,499.5,M,,M,,*72", &p2);

v=calcul_vitesse(p1,p2);

}*/

/* distance ? la proche zone */

int distance_a_la_proche_zone(position p, zone r[],int nb_zones, float *d)

{

int i=0,dist_zone,res;

dist_zone=calcul_distance(&p,&r[0].pos);

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

{

*d=calcul_distance(&p,&r[i].pos);

printf("\n%f\n",*d);

if(-*d<dist_zone<*d)

{

dist_zone=*d;

res=i;

}

}

return res;

}

//Ajouter vos tests unitaires dans cette fonction.

void tests_unitaires(void){

position p2,p1,p;

position p,p1,p2;

p1.latitude=35.968723;

p1.longitude=170.652056;

p2.longitude=156.831330;

p2.latitude=55.806160;

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);

}

/* test decode_int */

if (decode_int('0')!=0){

printf("Erreur test int0");

exit(-1);

}

if (decode_int('1')!=1){

printf("Erreur test int1");

exit(-1);

}

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

printf("Erreur test int2");

exit(-1);

}

if (decode_int('3')!=3){

printf("Erreur test int3");

exit(-1);

}

if (decode_int('4')!=4){

printf("Erreur test int4");

exit(-1);

}

if (decode_int('5')!=5){

printf("Erreur test int5");

exit(-1);

}

if (decode_int('6')!=6){

printf("Erreur test int6");

exit(-1);

}

if (decode_int('7')!=7){

printf("Erreur test int7");

exit(-1);

}

if (decode_int('8')!=8){

printf("Erreur test int8");

exit(-1);

}

if (decode_int('9')!=9){

printf("Erreur test int9");

exit(-1);

}

if (decode_int('A')!=-1){

printf("Erreur test intA");

exit(-1);

}

/* decode _nombre */

if (decode_nombre("123",3)!=123)

{

printf("Erreur test nombre1");

exit(-1);

}

if (decode_nombre("987654321",2)!=98)

{

printf("Erreur test nombre2");

exit(-1);

}

/* test longitude */

if (longitude("13558.8889")-135,981481<0.000001 && 135,981481-longitude("13558.8889")<0.000001)

{

printf("Erreur test longitude1");

exit(-1);

}

if (longitude("10112.1415")-101,202358<0.000001 && 101,202358-longitude("10112.1415")<0.000001)

{

printf ("Erreur test longitude2");

exit(-1);

}

/* test latitude */

if (latitude("3558.8889")-35,981481>0.000001 && 35,981481-latitude("3558.8889")<0.000001)

{

printf ("Erreur test latitude1");

exit(-1);

}

if (latitude("0112.1415")-01,202358>0.000001 && 01,202358-latitude("0112.1415")<0.000001)

{

printf ("Erreur test latitude2");

exit(-1);

}

/* test latitude/longitude */

float a,b,c,e;

a= 37.387458 - decode_lat_long("3723.2475");

c= 45.760703 - decode_lat_long("4545.6422");

b=3.11006 - decode_lat_long("00306.6036");

e= 3.110077 - decode_lat_long("00306.6046");

if (a*a > 0.000001){

printf("erreur");

exit(-1);

}

if (b*b > 0.000001){

printf("erreur2");

exit(-1);

}

if (c*c > 0.000001){

printf("erreur2");

exit(-1);

}

if (e*e > 0.000001){

printf("erreur2");

exit(-1);

}

/*Test decode tram latitude */

decode_trame_v2("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D",&p);

if(fabs(fabs(p.latitude)-46.759373 >10-6))

{

printf ("Erreur test latitude decode_trame_v2");

exit(-1);

}

/*Test decode tram longitude */

decode_trame("$GPGGA,141914.00,4645.5624,N,10112.1415,E,1,05,3.4,499.3,M,,M,,*7D",&p);

if(fabs(fabs(p.longitude)-101.202358 >10-6))

{

printf ("Erreur test longitude decode_trame_v2");

exit(-1);

}

/* test calcul_distance */

if(calcul_distance(&p1,&p2)<2441 && calcul_distance(&p1,&p2)>2442)

{

printf (" Erreur test calcul distance");

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);