s32int sw_sleep(u32 seconds)
{
u64 current_ticks = 0,end_value = (seconds*10);
/* we have a 1mhz clock. The current period of interrupts is one every
* 100ms. We need to wait till we get seconds*10 interrupts.
*/
current_ticks = get_current_ticks();
while((get_current_ticks() - current_ticks) < end_value);
return(0);
}
s32int sw_usleep(u32 seconds)
{
u64 current_ticks = 0,end_value = seconds;
/* we have a 1mhz clock. The current period of interrupts is one every
* 100ms. We need to wait till we get seconds interrupts. In effect, we
* do not do microseconds sleep, but milliseconds sleep
*/
current_ticks = get_current_ticks();
while((get_current_ticks() - current_ticks) < end_value);
return(0);
}
//------------------------------------------------------------------
// this function is called when the GPIO interrupt on P2 happens
// used temporarily since there is no more P1 pins available.
//------------------------------------------------------------------
void capture_p2_timing(UINT8 pin, CAPTURE_CCB* ccb, UINT16* time)
{
register UINT16 tick2;
switch (ccb->state)
{
case CAP_LOW:
// pulse is currently low, but got intr because it rises;
ccb->tick1 = get_current_ticks();
set_p2_falling_edge(pin);
ccb->state = CAP_HIGH;
break;
case CAP_HIGH:
// pulse is currently high but got intr because it falls.
// capture the timing now, and set the intr edge to raising edge.
tick2 = get_current_ticks();
if (tick2 > ccb->tick1)
{
*time = tick2 - ccb->tick1;
}
else
{
*time = TMR_A_PERIOD - ccb->tick1 + tick2;
}
set_p2_rising_edge(pin);
ccb->state = CAP_LOW;
break;
default:
break;
}
}
