Travaux Pratiques » Polytech GE sp4a 2022

#include <stdio.h>

#include <stdlib.h>

#include <strings.h>

#include "trame.h"

#define Rt 6400 /*rayon de la terre*/

//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};

typedef struct{

float Lat; /* latitude */

float Lon; /* lontitude */

} Position;

int trame_cmp(char *trame, char *type)

{

int i,b=1;

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

{

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

{

b=0;

}

}

return b;

}

int decode_int(char *c)

{

int nb;

if (c>=48 && c<=57)

{

nb=c-48;

}

else

{

nb=-1;

}

return nb;

}

int decode_nombre(char *ch, int i, int n) /* fonction qui permet de passer d'une chaine de caractere a un entier */

{

int res=0; /* initialisation du resultat=0 */

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

{

res=10*res + decode_int(ch[i]); /* permet de reconstituer le nombre terme a terme par puissance de 10 */

}

return res;

}

float decode_latitude(char *trame) /* fonction convertissant la cha?ne de caract?re contenant la latitude en nombre flottant et son test unitaire */

{

float res_decode_Lat, res1, res2, res3;

res1 = decode_nombre(trame,17,18); //retrouver les degr?s en sexagesimal dans la trame

res2 = decode_nombre(trame,19,20); //retrouver les minutes en sexagesimal dans la trame

res3 = decode_nombre(trame,22,25); //retrouver les secondes en sexagesimal dans la trame

res_decode_Lat = res1 + (res2 + res3/10000)/60; //conversion sexagesimal ? degr?s

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

{

res_decode_Lat = -res_decode_Lat;

}

return res_decode_Lat;

}

float decode_longitude(char *trame) /* fonction convertissant la cha?ne de caract?re contenant la longitude en nombre flottant et son test unitaire */

{

float res_decode_Lon, res1, res2, res3;

res1 = decode_nombre(trame,30,31);

res2 = decode_nombre(trame,32,33);

res3 = decode_nombre(trame,35,38);

res_decode_Lon = res1 + (res2 + res3/10000)/60;

if(trame[39]=='W') //identifier si la latitude est ouest ou est

{

res_decode_Lon = -res_decode_Lon;

}

return res_decode_Lon;

}

Position decode_position(char *trame) /* fonction qui d?code indiff?remment une latitude ou une longitude */

{

Position pos;

pos.Lat = decode_latitude(trame);

pos.Lon = decode_longitude(trame);

return pos;

}

float decode_trame(char *trame)/*fonction qui affiche la latitude et la longitude*/

{

Position pos;

decode_position(*trame);

printf("%f", pos.Lat);

printf("%f", pos.Lon);

}

//Ajouter vos tests unitaires dans cette fonction.

void tests_unitaires(void){

Position pos;

if (5!=5){

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

exit(-1);

}

/*if (trame_cmp("$GPGGA suite chaine","GPGGA")==0)

{

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

exit(-1);

}

if (trame_cmp("$GPRMC suite chaine","GPGGA")==1){

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

exit(-1);

}

if (trame_cmp("$GPRMC... ", "GPRMC" )==0){

printf ("Erreur Test unitaire trame_cmp.\n"); if (decode_position("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D").Lat != 45.75)

{

printf ("Erreur test unitaire decode_longitude-2\n");

exit(-1);

}

exit(-1);

}

if (trame_cmp("$APRMC...", "GPGGA")==0){

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

exit(-1);

}*/

/*if (decode_int("7")!=-1)

{

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

exit(-1);

}*/

/*test_decode_nombre();*/

if (decode_latitude("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D") != 45.75)

{

printf ("Erreur test unitaire decode_latitude\n");

exit(-1);

}

if (decode_longitude("$GPGGA,141914.00,4545.0000,N,00345.0000,E,1,05,3.4,499.3,M,,M,,*7D") != 3.75)

{

printf ("Erreur test unitaire decode_longitude\n");

exit(-1);

}

/*if (decode_position("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D").Lon != 3.1100599765777588)

{

printf ("Erreur test unitaire decode_longitude-1\n");

exit(-1);

}

if (decode_position("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D").Lat != 45.75)

{

printf ("Erreur test unitaire decode_longitude-2\n");

exit(-1);

}*/

}

void test_decode_nombre()

{

char t[5];

t[0] = '1'; t[1] = '2'; t[2] = '3'; t[3] = '4';/*initialisation de la trame test*/

if (decode_nombre(t,0,0) != 1)

{

printf ("Erreur test unitaire decode_nombre_1\n");

exit(-1);

}

if (decode_nombre(t,0,3) != 1234)

{

printf ("Erreur test unitaire decode_nombre_2\n");

exit(-1);

}

if (decode_nombre(t,0,3) != 1357)

{

printf ("Erreur test unitaire decode_nombre_3\n");

exit(-1);

}

}

//Fonction ? modifier !!!!!

void traitement(char * trame)

{

static int cpt=0;

Position pos;

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

{

printf("> %s", trame);

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

decode_position(trame);

printf("%f\n", pos.Lat);

printf("%f\n\n", pos.Lon);

cpt++;

}

}

// 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);