static PyObject* fifoGetSize(PyObject* self, PyObject* arg)
{
unsigned int fifo_id ;
unsigned int returnVal ;
if(!PyArg_ParseTuple(arg, "l", &fifo_id))
return NULL;
returnVal = fifo_getSize(fifo_id);
return Py_BuildValue("l", returnVal) ;
}
int fifo_open(unsigned char id){
int ret ;
if(id >= MAX_FIFO_NB) return -1 ;
fifo_array[id].id = id ;
fifo_array[id].address = id * FIFO_SPACING ;
fifo_array[id].open = -1 ;
if(fd == 0){
ret = spi_init();
}else{
ret = 1 ;
}
if(ret > 0){
fifo_array[id].size = fifo_getSize(id) ;
fifo_array[id].open = 1 ;
}
return ret ;
}
int main(int argc, char ** argv){
unsigned int i ;
long start_time, end_time ;
double diff_time ;
struct timespec cpu_time ;
if(fifo_open(0) < 0){
printf("cannot open fifo !\n");
return -1 ;
}
fifo_reset(0);
unsigned int size = fifo_getSize(0) ;
unsigned int nb_avail = fifo_getNbAvailable(0);
unsigned int nb_free = fifo_getNbFree(0);
printf("fifo 0 of size %d contains %d tokens , %d free slots \n", size, nb_avail, nb_free);
while(1){
fifo_reset(0);
fifo_read(0, buffer, 4096);
printf("done \n");
}
//fifo_reset(0) ;
//return 0 ;
fifo_write(0, buffer, 640);
sleep(3);
//fifo_read(0, buffer, 1024);
size = fifo_getSize(0) ;
nb_avail = fifo_getNbAvailable(0);
nb_free = fifo_getNbFree(0);
printf("fifo 0 of size %d contains %d tokens , %d free slots \n", size, nb_avail, nb_free);
return 0 ;
clock_gettime(CLOCK_REALTIME, &cpu_time);
start_time = cpu_time.tv_nsec ;
fifo_write(0, buffer, 4096) ;
clock_gettime(CLOCK_REALTIME, &cpu_time);
end_time = cpu_time.tv_nsec ;
diff_time = end_time - start_time ;
diff_time = diff_time/1000000000.0 ;
printf("transffered %d bytes in %f s : %f B/s \n", 4096, diff_time, 4096/diff_time);
printf("read and write done \n");
//printf("fifo 1 is %d large and contains %d tokens \n", fifo_getSize(1), fifo_getNbAvailable(1));
/*while(1){
fifo_reset(1);
fifo_read(1, buffer, 32*6);
for(i = 0 ; i < 5 ; i ++){
unsigned int posx0, posy0, posx1, posy1;
posy0 = buffer[i*(6)];
posy0 += (buffer[(i*(6))+1] & 0x03 << 8);
posx0 = (buffer[(i*(6))+1] & 0xFC >> 2);
posx0 += (buffer[(i*(6))+2] & 0x03 << 8);
posy1 = (buffer[i*(6)+2] & 0xFC >> 2);
posy1 += (buffer[(i*(6))+3] & 0x03 << 8);
posx1 = (buffer[(i*(6))+3] & 0xFC >> 2);
posx1 += (buffer[(i*(6))+4] & 0x03 << 8);
printf("x[%d] = %d, y[%d] = %d \n", i, (posx0 + posx1)/2, i, (posy0 + posy1)/2);
}
sleep(1);
}*/ //blob_tracking test ...
fifo_close(0);
}
