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| /***************************************************************************
main.c - description
-------------------
begin : mar oct 12 10:42:14 CEST 2004
copyright : (C) 2004 by
email :
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <fcntl.h>
#include <pthread.h>
#define FIFO_READ "/dev/rtf0"
#define FIFO_WRITE "/dev/rtf1"
#define FICHIER "/tmp/DMX"
#define STORE 1
#define STOP_STORE 2
#define RESTORE 3
#define STOP_RESTORE 4
#define STANDBY 5
#define WAIT_MOVE_DMX 6
#define DEMANDE_ENTETE 0
#define FORCE_ENTETE 1
#define DONNEE 2
#define OPTION 3
#define LOOP_SHOW 4
int fifo_write,fifo_read,monfichier;
pthread_t thread1;
signed char TrameDMXToWrite[60];
signed char TrameDMXToRead[60];
signed char TrameEnTeteToWrite[60];
signed char TrameEnTeteToRead[60];
char Contenu_Fifo_Read[60];
char Contenu_Fifo_Write[60];
unsigned char Etat,lastetat=0,Demande_a_Traiter=0,Nbr_Trame_Sec_Recu,Nbr_Trame_Sec_Fichier;
unsigned char Cpt,Cpt2;
unsigned char LastNumTrameTraiter=0;
unsigned char DureeH,DureeM,DureeS,Jour,Mois,Annee;
unsigned char TypeTrame;
unsigned char Test;
//signed char Loop, AutoGO;
unsigned char Cpt;
unsigned long CptTrame=0;
unsigned long NbrDemande=0;
pthread_t thread1;
//unsigned char AStorerQQchose=0;
void *Thread(void *arg);
unsigned char DemandeEcriture=0,DemandeLecture=0;
// ***************************************************************************/
void Write_Trame()
{
int nlu;
nlu = write(monfichier,TrameDMXToWrite,36);
//if (nlu != 36)
// printf("erreur ecriture\n");
//CptTrame++;
}
// ***************************************************************************/
void Read_Trame()
{
int nlu;
nlu = read(monfichier,TrameDMXToRead,36);
//if (nlu != 36)
// printf("erreur lecture\n");
//NbrDemande++;
}
// ***************************************************************************/
void Envoi_FIFO(unsigned char type)
{
unsigned char cpt;
Contenu_Fifo_Write[0] = 0xAA; //trame par sec
Contenu_Fifo_Write[3] = LastNumTrameTraiter; //num trame traiter
Contenu_Fifo_Write[1] = DONNEE; //num trame traiter
Contenu_Fifo_Write[2] = RESTORE; //num trame traiter
Read_Trame();
//store une trame de 36
for(cpt=0;cpt<36;cpt++)
Contenu_Fifo_Write[cpt+4] = TrameDMXToRead[cpt];
write(fifo_write,Contenu_Fifo_Write,40);
}
// ***************************************************************************/
int main(int argc, char *argv[])
{
fifo_write = open(FIFO_WRITE,O_WRONLY|O_NONBLOCK);
fifo_read = open(FIFO_READ,O_RDONLY|O_NONBLOCK);
monfichier = open(FICHIER,O_RDWR|O_NONBLOCK|O_CREAT|O_APPEND);
if (fifo_write != -1) printf("Fifo write OK\n");
else printf("Fifo write bad %d\n",fifo_write);
if (fifo_read != -1) printf("Fifo read OK\n");
else printf("Fifo read bad %d\n",fifo_read);
if (monfichier != -1) printf("Fichier OK\n");
else printf("Fichier bad %d\n",monfichier);
//printf("taille fichier %d\n",lseek(monfichier,0,SEEK_END));
//pthread_create(&thread1,NULL,Thread,NULL);
while(1)
{
read(fifo_read,Contenu_Fifo_Read,40);
Test = Contenu_Fifo_Read[0];
if (Test == 0xAA) //test 1er octet
{
TypeTrame = Contenu_Fifo_Read[1];
Etat = Contenu_Fifo_Read[2];
Demande_a_Traiter = Contenu_Fifo_Read[3];
switch(Etat)
{
case RESTORE:
{
//look si demande lecture
if (lastetat != Etat)
{
// printf("Restore\n");
lastetat = Etat;
LastNumTrameTraiter = 0;
lseek(monfichier,0,SEEK_SET); //place le pointeur au debut
}
if (Demande_a_Traiter != LastNumTrameTraiter)
{
if (TypeTrame == LOOP_SHOW)
{
LastNumTrameTraiter = 0;
lseek(monfichier,0,SEEK_SET); //place le pointeur au debut
// printf("loop\n");
}
else
{
//NbrDemande++;
Envoi_FIFO(DONNEE);
}
LastNumTrameTraiter = Demande_a_Traiter ;
}
break;
}
case STORE:
{
if (lastetat != Etat)//decalage pour laisser place pour entete
{
// printf("Store %d\n",Nbr_Trame_Sec_Recu);
lastetat = Etat;
//vide fichier existant
close(monfichier);
monfichier = open(FICHIER,O_RDWR|O_NONBLOCK|O_CREAT|O_TRUNC|O_APPEND);
}
//regarde si a traiter
if (Demande_a_Traiter != LastNumTrameTraiter)
{
for(Cpt=0;Cpt<36;Cpt++)
TrameDMXToWrite[Cpt] = Contenu_Fifo_Read[Cpt+4];
//Write_Trame();
//DemandeEcriture = 1;
pthread_create(&thread1,NULL,Thread,NULL);
LastNumTrameTraiter = Demande_a_Traiter ;
}
break;
}
case STOP_STORE:
{
if (lastetat != Etat)//decalage pour laisser place pour entete
{
// printf("Stop Store %d\n",CptTrame);
lastetat = Etat;
}
break;
}
case STOP_RESTORE:
{
break;
}
case STANDBY:
{
if (lastetat != Etat)
{
// printf("Standby %d\n",NbrDemande);
lastetat = Etat;
LastNumTrameTraiter = 0;
NbrDemande =0;
CptTrame = 0;
}
if (Demande_a_Traiter != LastNumTrameTraiter)
{
LastNumTrameTraiter = Demande_a_Traiter ;
}
break;
}
default:break;
}
}
}
close(monfichier);
return EXIT_SUCCESS;
}
//****************************************************************************
void *Thread(void *arg)
{
struct sched_param p;
p.sched_priority = 60;
pthread_setschedparam (pthread_self(),SCHED_FIFO,&p);
//while(1)
{
//if (DemandeEcriture)
{
Write_Trame();
// DemandeEcriture = 0;
}
// else if (DemandeLecture)
// {
// ReadTrame();
// DemandeEcriture = 0;
// }
}
pthread_exit(NULL);
} |
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