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#include std84.h
#include bit84.h
#define descendre porta.0
#define monter porta.1
#define cs porta.2
#define clock porta.3
#define bouton_poussoir portb.4
#define data portb.7
void main()
{
char nouvelle_position, buffer, ancienne_position, z;
trisa = 0 ;
trisb = 0b11111111 ;
// la barriere est fermée à l'état initial
for(;;)
{
// tant qu'on appuit pas sur le bouton poussoir faire rien
while(!bouton_poussoir);
// acquisition du CAN serie
cs =1; //Mode lecture de la tension analogique
microdelay(100); // Temps de conversion AN
cs =0; //Mode extraction des bits
clock = 1; buffer.7 =data; clock = 0;
clock = 1; buffer.6 =data; clock = 0;
clock = 1; buffer.5 =data; clock = 0;
clock = 1; buffer.4 =data; clock = 0;
clock = 1; buffer.3 =data; clock = 0;
clock = 1; buffer.2 =data; clock = 0;
clock = 1; buffer.1 =data; clock = 0;
clock = 1; buffer.0 =data; clock = 0;
ancienne_position = buffer;
// baisser la barriere
descendre = 1 ;
z=1;
while(z)
{
delays(0.5);
// refaire l'acquisition
cs =1; //Mode lecture de la tension analogique
microdelay(20); // Temps de conversion AN
cs =0; //Mode extraction des bits
clock = 1; buffer.7 =data; clock = 0;
clock = 1; buffer.6 =data; clock = 0;
clock = 1; buffer.5 =data; clock = 0;
clock = 1; buffer.4 =data; clock = 0;
clock = 1; buffer.3 =data; clock = 0;
clock = 1; buffer.2 =data; clock = 0;
clock = 1; buffer.1 =data; clock = 0;
clock = 1; buffer.0 =data; clock = 0;
// acquisition du CAN serie
nouvelle_position = buffer;
// si la position nouvelle est égale à la position d'avant,
// alors on arrête ... sinon on continue
if(nouvelle_position == ancienne_position)
z=0;
else
ancienne_position = buffer;
}
// on arrète la barrière
descendre = 0 ;
delays(2) ;
// on remonte la barrière
monter = 1 ;
// acquisition du CAN serie
z=1;
ancienne_position = buffer ;
while(z)
{
delays(1);
// refaire l'acquisition
cs =1; //Mode lecture de la tension analogique
microdelay(20); // Temps de conversion AN
cs =0; //Mode extraction des bits
clock = 1; buffer.7 =data; clock = 0;
clock = 1; buffer.6 =data; clock = 0;
clock = 1; buffer.5 =data; clock = 0;
clock = 1; buffer.4 =data; clock = 0;
clock = 1; buffer.3 =data; clock = 0;
clock = 1; buffer.2 =data; clock = 0;
clock = 1; buffer.1 =data; clock = 0;
clock = 1; buffer.0 =data; clock = 0;
nouvelle_position = buffer;
// si la position nouvelle est égale à la position d'avant,
// alors on arrête ... sinon on continue
if(nouvelle_position==ancienne_position)
z=0;
else
ancienne_position = buffer;
}
// on arrète la barrière
monter = 0 ;
}
} |
