Hardware and software and tools details
TM4C series Micro-controller
TI-RTOS
CCS 6.0 TI ARM Compiler 5.1.6
gpio_isr()
{
event_post(gpioevent, Event_Id_00);
}
gpiotask
{
while(1)
{
if((Event_pend(gpioevent, Event_Id_NONE, Event_Id_00+Event_Id_01 , BIOS_WAIT_FOREVER)) & Event_Id_00 )
.....{
/ do some thing /
}
}
}
In the above code , whenever a button is pressed (GPIO) an event posted,
The task is pending on the event, when it gets the event it executes some code and returns to pend waiting for the next event.
When the task is still executing the code, if another GPIO interrupt is received, the task is preempted and the hardware ISR is executed and new event is posted.
What will happen to this new event as the task is still tom be completed and pend for the next event.
Will the event be queued? if so, How many such events can be queued ?
if events aren't queued do we lose these events?
if answers to these are available in SYS/BIOS user's guide, i would thankful if somebody could guide me where to find it.
TIA
Narendra
