root/branch/best/sp4a12/main.c @ 761
| 5 | jalaffon | #include <stdio.h>
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#include <stdlib.h>
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| 10 | albest | #include <strings.h>
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#include <math.h>
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| 5 | jalaffon | #include "trame.h"
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| 584 | albest | ||
#define PI 3.14159
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/*Declaration des variables*/
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typedef struct {
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float latitude;
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float longitude;
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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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Zone zones[] = {
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{{44.7887762, -3.012}, 50},
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{{44.7891220, -3.013}, 70},
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};
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Position pos_prec;
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| 5 | jalaffon | ||
//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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| 10 | albest | 0};
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| 5 | jalaffon | ||
| 233 | albest | int trame_cmp(char* trame,char* type){ //Cette fonction renvoie 1 si la trame est de la forme "GPGGA".
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| 10 | albest | int i = 0;
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while (type[i]!= '\0'){
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if (trame[i+1] != type[i]){
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return 0;
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}
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i++;
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}
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return 1;
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| 5 | jalaffon | }
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| 10 | albest | ||
| 233 | albest | int decode_int(char c){ //Cette fonction renvoie la valeur decimale associ?e ? un caract?re donn? en param?tre compris entre '0' et '9' et renvoie -1 sinon.
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| 584 | albest | if (c<'0' || c>'9'){
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return -1;
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| 10 | albest | }
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| 584 | albest | return c - '0';
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| 10 | albest | }
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| 233 | albest | int decode_nombre(char * ch,int n){ //Renvoie la valeur d?cimale des n premiers caract?res de la cha?ne ch.
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| 10 | albest | int res = 0;
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for (int i =0;i < n;i++){
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| 214 | albest | res *= 10;
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res += decode_int(ch[i]);
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| 10 | albest | }
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return res;
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}
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| 233 | albest | float conv_lat(char * latitude){ //La fonction convertie la latitude en sexa en degr?.
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| 580 | albest | float val = decode_nombre(latitude,4); //* bof
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| 10 | albest | float res = 0;
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| 17 | albest | for (int i = 5; i < 9;i++){
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| 233 | albest | val += (decode_int(latitude[i]))*pow(10,-i+4); //On replace chaque chiffre au bonne endroit (unit?, dizaine ...).
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| 17 | albest | }
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| 580 | albest | res = (int)(val/100); //****
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| 17 | albest | res += (val - res*100)/60;
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| 580 | albest | return res;
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}
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| 10 | albest | ||
| 233 | albest | float conv_long(char * longitude){ //La fonction convertie la longitude en sexa en degr?.
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| 580 | albest | float val = decode_nombre(longitude,5); //**
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| 17 | albest | float res = 0;
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for (int i = 6; i < 10;i++){
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val += (decode_int(longitude[i]))*pow(10,-i+5);
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}
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res = (int)(val/100);
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res += (val - res*100)/60;
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return res;}
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| 233 | albest | float conversion(char * chaine){ //Cette fonction convertie soit une latitude soit une longitude en degr?.
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| 17 | albest | int cpt = 0;
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| 580 | albest | while (chaine[cpt]!='\0'){ //***, .
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| 17 | albest | 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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else{
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| 25 | albest | return 1000.0;
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| 17 | albest | }
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}
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| 214 | albest | ||
| 233 | albest | int decode_trame(char * trame, Position *p){
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| 580 | albest | char longi[10]={'\0'}; //*** trame -> @ lati -> @
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| 233 | albest | char lati[9];
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| 214 | albest | int cpt = 0;
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int i = 0;
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int j = 0;
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int y = 0;
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if (trame_cmp(trame,"GPGGA")==1){
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while (trame[i] != '\0'){
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| 233 | albest | if (trame[i] == ','){ //On compte le nombre de virgule.
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| 214 | albest | cpt += 1;
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| 580 | albest | i += 1;
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| 214 | albest | }
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| 233 | albest | if (cpt == 2) { //On regarde si le nombre de virgule correspond ? 2, ie la latitude
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lati[j] = trame[i]; //On stocke caract?re par caract?re pour isoler la latitude afin de la convertir.
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| 214 | albest | j ++;
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}
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| 233 | albest | if (cpt == 4) { //On regarde si le nombre de virgule correspond ? 4, ie la longitude
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| 580 | albest | longi[y] = trame[i];
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| 214 | albest | y ++;
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}
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| 580 | albest | i += 1;
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| 214 | albest | }
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| 580 | albest | p->latitude = conv_lat(lati); //***************** vous avez de la chance &trame[15], trame+15
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| 233 | albest | p->longitude = conv_long(longi); //On stocke la latitude et la longitude convertie dans structure position.
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return 1;
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| 214 | albest | }
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| 233 | albest | return 0;
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| 25 | albest | }
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| 584 | albest | ||
| 233 | albest | float calcule_distance(Position p_1, Position p_2){
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float rayon = 6378.14; //Rayon de la Terre (km).
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float DistAng = 0;
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DistAng = (PI/180)*acos((sin(p_1.latitude)*sin(p_2.latitude)+cos(p_1.latitude)*cos(p_2.latitude)*cos(p_2.longitude-p_1.longitude))); //Calcul distance angulaire
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return DistAng*rayon; //On renvoi le calcul de la distance : D (km) = DistanceAngulaire*R.
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}
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float calcule_vitesse(Position p_1, Position p_2){
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| 580 | albest | return calcule_distance(p_1,p_2)*3600; //On calcul la vitesse (en km) avec la formule v=d/t avec t=1s.
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| 233 | albest | }
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int distance_a_la_plus_poche_zone(Position p, Zone r[], int nb_zones, float *d){
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int index = 0;
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| 580 | albest | *d = calcule_distance(p, r[0].rpos); //On initialise une distance pour pouvoir ensuite la comparer et chercher le minimum.
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| 233 | albest | for (int i = 1; i<nb_zones; i++){ //On parcours la table de zone dangereuse.
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| 580 | albest | if (calcule_distance(p,r[i].rpos) < *d){
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| 233 | albest | index = i;
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| 580 | albest | *d = calcule_distance(p,r[i].rpos);
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| 233 | albest | }
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}
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return index;
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}
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| 580 | albest | ||
| 10 | albest | void traitement(char * trame){
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| 573 | albest | Position pos;
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| 295 | albest | int alarme;
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| 233 | albest | float vitesse;
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| 295 | albest | float seuil = 0.5;
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int index;
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| 573 | albest | float distance;
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| 233 | albest | if (trame_cmp(trame,"GPGGA")==1){
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| 295 | albest | printf ("> %s\n",trame);
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| 573 | albest | if (decode_trame(trame,&pos)==1){
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vitesse = calcule_vitesse(pos,pos_prec);
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index = distance_a_la_plus_poche_zone(pos,zones,2,&distance);
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if ((distance <= seuil) && (vitesse > zones[index].vitmax)){
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| 295 | albest | alarme = 1;
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| 573 | albest | printf("Alarme on \n");
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| 233 | albest | }
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| 295 | albest | alarme = 0;
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| 573 | albest | printf("Alarme off \n");
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| 233 | albest | }
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| 573 | albest | pos_prec.latitude = pos.latitude;
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pos_prec.longitude = pos.longitude;
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| 295 | albest | }
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}
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| 5 | jalaffon | ||
| 295 | albest | ||
| 5 | jalaffon | //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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if (trame_cmp("$GPGGA suite chaine","GPGGA")!=1){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (trame_cmp("$GPRMC suite chaine","GPGGA")!=0){
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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 (trame_cmp("$GPRMC... ", "GPRMC" )!=1){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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}
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if (trame_cmp("$APRMC...", "GPGGA")!=0){
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printf ("Erreur Test unitaire trame_cmp.\n");
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exit(-1);
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| 10 | albest | }
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if (decode_int('5')!=5){
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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('A')!=-1){
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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_nombre("123",3)!=123){
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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("987654321",2)!=98){
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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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| 17 | albest | if (fabs(conv_lat("3723.2475")-37.387458)>= pow(10,-6)){
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| 10 | albest | printf ("Erreur Test unitaire conv_lat.\n");
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exit(-1);
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| 17 | albest | }
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if (fabs(conversion("00306.6036")-3.11006)>= pow(10,-6)){
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printf ("Erreur Test unitaire conversion.\n");
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exit(-1);
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}
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if (fabs(conversion("3723.2475")-37.387458)>= pow(10,-6)){
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printf ("Erreur Test unitaire conversion.\n");
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exit(-1);
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| 233 | albest | }
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//Position pos1,pos2;
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//decode_trame("$GPGGA,141914.00,4545.0000,N,00306.6036,E,1,05,3.4,499.3,M,,M,,*7D", &pos1);
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//decode_trame("$GPGGA,141914.00,4545.0242,N,00306.6039,E,1,05,3.4,499.3,M,,M,,*7D", &pos2);
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//printf("%f\n",calcule_distance(pos1, pos2));
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//printf("%f\n",calcule_vitesse(pos1, pos2));
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//float distance;
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//printf("%d\n",distance_a_la_plus_poche_zone(pos1 , zones, 2, &distance));
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//printf("%f\n", distance);
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| 5 | jalaffon | }
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// Ne pas modifier cette fonction
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int main(int argc,char ** argv)
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| 214 | albest | {
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| 17 | albest | tests_unitaires();
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| 5 | jalaffon | ||
// 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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