Révision 571
Ajouté par yoguer il y a presque 4 ans
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#include "trame.h"
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#include <math.h>
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int tab_memoirelatlong[2];
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typedef struct position
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{
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long latitude;
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long longitude;
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}position;
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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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}
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void traitement_trame(char *trame,int *platitude,int *plongitude)
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void traitement_trame(char *trame, position *p1)
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{
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char tab_latitude[13],tab_longitude[14];
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int i,j;
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{
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tab_latitude[i]=trame[i+17];
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}
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*platitude=conversion_sexa(tab_latitude);
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p1->latitude=conversion_sexa(tab_latitude);
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for(j=0;j<12;j++)
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{
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tab_longitude[j]=trame[j+29];
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}
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*plongitude=conversion_sexa(tab_longitude);
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p1->longitude=conversion_sexa(tab_longitude);
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printf ("> %s\n",trame);
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}
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int calcul_vitesse(int *platitude,int *plongitude)
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int calcul_vitesse(position *p1, position *p2)
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{
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float distance, vitesse;
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if((tab_memoirelatlong[0]!=*platitude) || (tab_memoirelatlong[1]!=*plongitude))
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if((p2->latitude!=p1->latitude) || (p2->longitude!=p1->longitude))
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{
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distance=sqrt((*platitude-tab_memoirelatlong[0])*(*platitude-tab_memoirelatlong[0])+(*plongitude-tab_memoirelatlong[1])*(*plongitude-tab_memoirelatlong[1]));
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distance=sqrt((p1->latitude - p2->latitude)*(p1->latitude - p2->latitude)+(p1->longitude - p2->longitude)*(p1->longitude - p2->longitude));
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vitesse=distance*0.1852507138; //rayon de la terre * kradian = 0.1852507138 (vitesse en m/s)
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vitesse=vitesse*3.6; //vitesse en km/h, 3.6=3600s/1000m
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//printf("distance=%d\n",distance);
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printf("vitesse=%d\n",vitesse);
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printf("vitesse=%f\n",vitesse);
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printf("latitude=%d\n",*platitude);
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printf("longitude=%d\n",*plongitude);
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printf("memolat=%d\n",tab_memoirelatlong[0]);
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printf("memolong=%d\n",tab_memoirelatlong[1]);
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printf("latitude=%d\n",p1->latitude);
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printf("longitude=%d\n",p1->longitude);
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printf("memolat=%d\n",p2->latitude);
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printf("memolong=%d\n",p2->longitude);
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}
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tab_memoirelatlong[0]=*platitude;
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tab_memoirelatlong[1]=*plongitude;
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p2->latitude=p1->latitude;
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p2->longitude=p1->longitude;
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}
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| ... | ... | |
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static int cpt=0;
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cpt++ ;
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int latitude, longitude;
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int *platitude=&latitude,*plongitude=&longitude;
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position p1,p2;
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if (trame_cmp(trame,"GPGGA")==1)
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{
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traitement_trame(trame,platitude,plongitude);
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calcul_vitesse(platitude,plongitude);
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traitement_trame(trame,&p1);
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calcul_vitesse(&p1,&p2);
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}
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}
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Formats disponibles : Unified diff
Fonction calcul vitesse avec structure