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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 "trame.h"
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#include<math.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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//Declaration Globale
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typedef struct
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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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Position P,P1,P2,P3,P4;
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typedef struct
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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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//Table des zones dangereuses
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Zone zones[]=
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{
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{{44.788762, -3.012},50},
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{{44.788762, -3.013},70},
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};
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//Fonctions Personnels
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int trame_cmp(char * trame,char * type)
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{
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int i;
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int verif=1;
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for(i=0;i<5;i++)
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{
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if(trame[i+1]!=type[i])//verifie que le debut de la trame correspond au caractere type
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{
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verif=0;
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}
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}
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return verif;
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}
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int decode_int(char c)//Fonction qui permet de passer d'un caratere a un entier
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{
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if(c>='0' && c<='9')
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{
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c-=48;
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}
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else
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{
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return -1;
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}
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}
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int test_decode_int()//test de la fonction decode int
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{
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int verif=1;
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if(decode_int('0')!=0)
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{
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verif=0;
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}
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if(decode_int('1')!=0)
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{
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verif=0;
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}
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if(decode_int('2')!=0)
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{
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verif=0;
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}
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if(decode_int('3')!=0)
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{
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verif=0;
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}
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if(decode_int('4')!=0)
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{
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verif=0;
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}
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if(decode_int('5')!=0)
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{
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verif=0;
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}
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if(decode_int('6')!=0)
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{
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verif=0;
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}
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if(decode_int('7')!=0)
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{
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verif=0;
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}
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if(decode_int('8')!=0)
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{
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verif=0;
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}
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if(decode_int('9')!=0)
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{
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verif=0;
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}
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return verif;
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}
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int decode_nombre(char *ch,int n,int i)//Fonction qui permet de passer d'une chaine de caratere a un entier
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{
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int temp=0;
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for(i;i<n;i++)
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{
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temp=(temp*10)+decode_int(ch[i]);
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}
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return temp;
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}
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int test_decode_nombre()//test de la fonction decode nombre
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{
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int verif=1;
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if(decode_nombre("758961",2,0)!=75)
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{
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verif=0;
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}
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if(decode_nombre("758961",5,0)!=75896)
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{
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verif=0;
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}
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}
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float decode_latitude(char *trame )//Fonction qui extrait et converti la latitude d'une trame
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{
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float degres,reste,flottant,res;
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int i=17;
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degres=decode_nombre(trame,i+2,i);
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reste=decode_nombre(trame,i+4,i+2);
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flottant=decode_nombre(trame,i+10,i+5);
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res=degres+((reste+(flottant/10000))/60);
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if(trame[40]=='W')
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{
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res=-res;
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}
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return res;
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}
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float decode_longitude(char *trame )//Fonction qui extrait et converti la longitude d'une trame
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{
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float degres,reste,flottant,res;
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int i=30;
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degres=decode_nombre(trame,i+2,i);
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reste=decode_nombre(trame,i+3,i+2);
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flottant=decode_nombre(trame,i+10,i+5);
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res=degres+((reste+(flottant/10000))/60);
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if(trame[40]=='S')
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{
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res=-res;
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}
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return res;
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}
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float decode_trame(char *trame,Position *P)//Fonction qui extrait la position(latitude,longitude)
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{
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P->Latitude=decode_latitude(trame);
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P->Longitude=decode_longitude(trame);
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}
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float calcul_distance(Position p_1,Position p_2)//Calcul de la distance entre 2 positions
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{
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float D;
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float R_terre=6371.0;
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D=((6.28*R_terre)/360.0)*sqrt((p_2.Longitude-p_1.Longitude)*(p_2.Longitude-p_1.Longitude)+(p_2.Latitude-p_1.Latitude)*(p_2.Latitude-p_1.Latitude));
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return D;
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}
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float calcul_vitesse(Position p_1,Position p_2)//Calcul de la vitesse entre 2 positions
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{
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float Vitesse=(calcul_distance(p_1,p_2)*3600.0);
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return Vitesse;
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}
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int distance_a_la_plus_proche_zone(Position p,Zone r[],int nb_zones,float*d)//fonction qui retourne l'indice de la position de la plus proche zone
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{
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int i;
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int j=0;
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float distance_init=calcul_distance(p,r[0].rpos);//Initialisation d'une distance initial de reference
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if(nb_zones>0){
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for(i=1;i<nb_zones;i++)
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{
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*d=calcul_distance(p,r[i].rpos);
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if(*d<=distance_init)
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{
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j=i;
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distance_init=*d;
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}
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}
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return j;
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}else{return -1;}
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}
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int test_distance_de_la_plus_proche_zone()
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{
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float distance;
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P.Latitude=decode_latitude("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D");
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P.Longitude=decode_longitude("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D");
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int indice=distance_a_la_plus_proche_zone(P,zones,sizeof(zones),&distance);
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if(indice!=1 && fabs(distance-4980.238)>0.01)
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{
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printf("erreur distance de la plus proche zone");
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exit(-1);
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}
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return indice;
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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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{
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/*
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static int cpt=0;
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if(trame_cmp(trame,"GPGGA")==1)
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{
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printf ("> %s\n",trame);
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cpt++;
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}
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*/
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Position pos_init,p;
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//initialisation d'une position initiale a partir d'une trame de test valide
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decode_trame("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D",&pos_init);
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float distance,vitesse;
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float seuil=5100.0;//Definition du seuil en evaluant les distance retourner afin de valider le foncionnement du bloc
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int indice;
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if(trame_cmp(trame,"GPGGA")==1)
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{
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printf ("> %s\n",trame);
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decode_trame(trame,&p);
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printf("Latitude:%f\nLongitude:%f\n",p.Latitude,p.Longitude);
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vitesse=calcul_vitesse(p,pos_init);
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distance=calcul_distance(p,pos_init);
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indice=distance_a_la_plus_proche_zone(p,zones,sizeof(zones),&distance);
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if(distance<seuil && vitesse>zones[indice].vitmax)
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{
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printf("alarme on\n");
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printf("Vitesse limite? a :%f\n",vitesse);
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printf("Distance de:%f\n\n",distance);
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}else
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{
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printf("alarme off\n");
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pos_init=p;
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}
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}
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}
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/*Remarque de code*/
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/*
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On remarque que la distance renvoyer par la fonction distance_de_la_plus_proche
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Ce qui fait que le seuil defini et faux cependant permet de tester un code
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qui decrit l'etat de l'alarme.
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Un probleme se retrouve eq
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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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//Test fonction trame_cmp
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/*if (trame_cmp("$GPRGA","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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//test fonction decode_int
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/*if (test_decode_int()!=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 (test_decode_nombre()!=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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//Test fonction
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/*if (test_decode_latitude()!=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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/*printf("%d\n",decode_nombre("4545",3,0));
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//Test de decode latitude et longitude
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printf("%f\n",decode_latitude("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D"));
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printf("%f\n",decode_longitude("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D"));*/
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//Position pos;
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//printf("Latitude: %f Longitude: %f\n",decode_position("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D",&pos));
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//Test de la fonction decode_trame
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/*
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if (decode_trame("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D",pos)!=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 (decode_trame("$GPGGA,141917.00,4545.0726,N,00306.6039,E,1,05,3.4,499.6,M,,M,,*73",pos)!=1){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (decode_trame("$GPGGA,141915.00,4545.0242,N,00306.6039,E,1,05,3.4,499.5,M,,M,,*75",pos)!=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 (decode_trame("$GPRMC,141916.00,A,4545.6422,N,00306.6037,E,0.1,211.1,010206,,*3B",pos)!=1){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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*/
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//Test calcul distance et vitesse pour un intervalle de 1s
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/*
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P2.Latitude=decode_latitude("$GPGGA,141915.00,4545.0242,N,00306.6039,E,1,05,3.4,499.5,M,,M,,*75");
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P2.Longitude=decode_longitude("$GPGGA,141915.00,4545.0242,N,00306.6039,E,1,05,3.4,499.5,M,,M,,*75");
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P1.Latitude=decode_latitude("$GPGGA,141917.00,4545.0726,N,00306.6039,E,1,05,3.4,499.6,M,,M,,*73");
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P1.Longitude=decode_longitude("$GPGGA,141917.00,4545.0726,N,00306.6039,E,1,05,3.4,499.6,M,,M,,*73");
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printf("distance: %f\n",calcul_distance(P1,P2));
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printf("vitesse: %f\n",calcul_vitesse(P1,P2));
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*/
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//Test calcul distance entre 2 villes
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/*
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//Paris
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P1.Latitude = 48.8588897;
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P1.Longitude = 2.320041;
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//Lyon
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P2.Latitude = 45.7578137;
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P2.Longitude = 4.8320114;
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//Toulouse
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P3.Latitude = 43.7520597;
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P3.Longitude = 1.2877314;
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printf("distance Paris-Lyon : %f\n",calcul_distance(&P1,&P2));
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printf("distance Paris-Toulouse : %f\n",calcul_distance(&P1,&P3));
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*/
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//Test de la fonction distance la plus proche
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/*
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printf("%f\n",decode_latitude("$GPGGA,141917.00,4545.0726,N,00306.6039,E,1,05,3.4,499.6,M,,M,,*73"));
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printf("%f\n",decode_longitude("$GPGGA,141917.00,4545.0726,N,00306.6039,E,1,05,3.4,499.6,M,,M,,*73"));
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P1.Latitude = 44.788762;
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P1.Longitude = -3.012;
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P2.Latitude = 44.788762;
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P2.Longitude = -3.013;
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printf("distance 1 : %f\n",calcul_distance(&P,&P1));
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printf("distance 2 : %f\n",calcul_distance(&P,&P2));
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*/
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//Test de la fonctionn distance de la plus proche zone
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/*
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test_distance_de_la_plus_proche_zone();
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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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