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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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"$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D",
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"$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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int trame_cmp(char * trame, char * type){
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int i = 0, j = 0, res = 1;
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while(type[i] != '\0')
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{
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i++;
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}
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while(j<i)
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{
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if (trame[j+1] != type[j])
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{
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res = 0;
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}
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j++;
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}
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return res;
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}
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int decode_int(char c){
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int res;
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if (c >= 48 && c <= 57)
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{
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res = c - 48;
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}
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else
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{
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res = -1;
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}
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return res;
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}
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void test_decode_int(void){
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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('1') != 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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if(decode_int('2') != 2)
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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('3') != 3)
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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('4') != 4)
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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('5') != 5)
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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('6') != 6)
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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('7') != 7)
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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('8') != 8)
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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('9') != 9)
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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('L') != (-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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}
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int decode_nombre (char * ch, int n){
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int i, res = 0;
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for (i=0;i<n;i++)
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{
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res = res*10 + decode_int(ch[i]);
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}
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return res;
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}
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void test_decode_nombre(void){
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if (decode_nombre("7541",2)!=75)
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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("7541",3)!=754)
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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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}
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/*Fonction ? modifier !!!!!*/
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void traitement(char * trame){
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static int cpt=0;
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cpt++;
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if (trame_cmp(trame,"GPGGA"))
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printf ("> %s\n",trame);
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}
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float conv_lat(char* lat_sex)
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{
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float lat_dec=0;
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float degres_lat = decode_nombre(lat_sex,4);
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int i;
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for (i=5;i<9;i++)
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{
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degres_lat += (decode_int(lat_sex[i]))*pow(10,-i+4);
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}
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lat_dec = (int) (degres_lat/100);
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lat_dec += (degres_lat-lat_dec*100)/60;
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return lat_dec;
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}
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float conv_long (char* long_sex)
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{
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float long_dec=0;
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float degres_long = decode_nombre(long_sex,5);
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int i;
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for (i=6;i<10;i++)
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{
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degres_long += (decode_int(long_sex[i]))*pow(10,-i+5);
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}
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long_dec = (int) (degres_long/100);
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long_dec += (degres_long-long_dec*100)/60;
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return long_dec;
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}
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float conv_gen(char * chaine){
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int cpt = 0;
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while (chaine[cpt]!='\0'){
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cpt++;
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}
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if (cpt == 9){
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return conv_lat(chaine);
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}
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else if(cpt==10){
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return conv_long(chaine);
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}
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}
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void test_conversion(void)
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{
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if (fabs(conv_gen("3723.2475")-37.387458)>= pow(10,-6)){
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printf ("Erreur Test unitaire conv_lat.\n");
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exit(-1);
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}
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if (fabs(conv_gen("00306.6036")-3.11006)>= pow(10,-6)){
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printf ("Erreur Test unitaire conv_long.\n");
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exit(-1);
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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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{
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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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if (trame_cmp("$GPGGA suite chaine","GPGGA")!=1){
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printf ("Erreur Test unitaire trame_cmp 1.\n");
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exit(-1);
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}
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if (trame_cmp("$GPRMC suite chaine","GPGGA")!=0){
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printf ("Erreur Test unitaire trame_cmp 2.\n");
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exit(-1);
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}
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if (trame_cmp("$GPRMC...", "GPRMC" )!=1){
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printf ("Erreur Test unitaire trame_cmp 3.\n");
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exit(-1);
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}
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if (trame_cmp("$APRMC...", "GPGGA")!=0){
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printf ("Erreur Test unitaire trame_cmp 4.\n");
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exit(-1);
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}
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test_decode_int();
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test_decode_nombre();
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test_conversion();
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/*-----------------------------------------------------*/
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}
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/*-----------------------------------------------------------------------------------
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// FIN SEANCE 1
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// DEBUT SEANCE 2
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-------------------------------------------------------------------------------------*/
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typedef struct {
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float lat;
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float lng;
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} Position;
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typedef struct {
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Position rpos;
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float vitmax;
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} Zone;
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Position decode_trame(char * trame){ /*Decodage de la trame*/
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if (trame_cmp(trame, "GPGGA")!= 1){ /* On ne prend que les trames de type GPGGA*/
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printf("Cette trame n'est pas au bon format.");
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}
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else{
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Position pos_trame; /*Initialisation.*/
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char lat[10];
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char lng[11];
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int n = 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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while (trame[i] != '\0'){ /* Lecture de la trame*/
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if (trame[i] == ','){ /* Reperage des virgules*/
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n = n + 1;
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i = i + 1;
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}
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if (n == 2) { /* Apres la deuxieme virgule, la latitude*/
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lat[j] = trame[i]; /* Recuperation de la latitude, caractere par caractere*/
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j = j + 1;
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}
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if (n == 4) { /* Apres la quatrieme virgule, la longitude*/
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lng[k] = trame[i]; /* Recuperation de la longitude, caractere par caractere */
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k = k + 1;
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}
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i ++;
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}
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lat[j] = '\0'; /*Fermeture chaine*/
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lng[k] = '\0';
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pos_trame.lat = conv_lat(lat);
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pos_trame.lng = conv_long(lng); /* Stockage la latitude et la longitude */
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return pos_trame;
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}
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}
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float calcul_distance(Position pos_trame1, Position pos_trame2){
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float x = (pos_trame2.lng - pos_trame1.lng) * cos( (pos_trame1.lat + pos_trame2.lat) / 2); /* Application de la formule contenant le rayon de la terre */
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float y = pos_trame2.lat - pos_trame1.lat;
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float z = sqrt(x*x + y*y);
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float k = 1.852 * 60;
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float d = k * z;
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return d;
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}
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float calcul_vitesse(Position pos_trame1, Position pos_trame2){
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float d;
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d = calcul_distance(pos_trame1, pos_trame2); /* Calcul de la distance */
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float v = d * 3600; /* Obtention de la vitesse grace a la distance */
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return v;
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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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