void VCOM_echo(void)
{
uint8_t temp;
circular_buffer_pools_t * cb_out = circular_buffer_pointer(0x2);
circular_buffer_pools_t * cb_in = circular_buffer_pointer(0x82);
if((!circular_buffer_is_empty(cb_out)) && (!circular_buffer_is_full(cb_in)))
{
circular_buffer_pop(cb_out,&temp);
circular_buffer_push(cb_in,&temp);
// Set Next Timer Reload to finish transfer after there is room in FIFO
start_timer(1);
}
}
/**
* Lee un byte en un búfer circular
* @param cb Búfer circular
* @return El byte como un casting de uint8_t a int32_t en caso de éxito
* o -1 en caso de error
*/
int32_t circular_buffer_read (volatile circular_buffer_t *cb)
{
int32_t byte;
if (circular_buffer_is_empty (cb))
return -1;
else
{
byte = cb->data[cb->start];
cb->count--;
cb->start++;
if (cb->start == cb->size)
cb->start = 0;
return byte;
}
}
