Interrupt processing with uC-OS II

It depends on you hwo you design it.

I wrote a own interrupt function for a CAN device.

I used MicroC/OS-2 Event Flags to communicate between interrupt function and the normal program flow.

Interrupt Registration absolute normal

alt_irq_register(CAN_1_IRQ,

NULL,

local_my_avalon_can_advanced_isr);

ISR:

extern "C" // wegen ISR ...... // i use C++

{

static void local_my_avalon_can_advanced_isr

(

void * context, // Dummies - ignore

alt_u32 id // Dummies - ignore

)

{

..... // do something

OSFlagPost(CAN_local_CAN_Event, // event flag group

proc_os_can_flags, // flags according to the result of do something

OS_FLAG_SET,

&proc_u8_error);

}

Function that waits for CAN Stuff:

void class_can_system::my_avalon_can_handler

(

void

)

{

... /// do some init stuff

for(;;)

{

proc_os_can_flags = OSFlagPend(CAN_local_CAN_Event,

L_CAN_ALL_EVENT,

OS_FLAG_WAIT_SET_ANY + OS_FLAG_CONSUME,

L_WAIT_FOR_EVER,

&proc_u8_error);

switch(proc_u8_error)

{

case OS_NO_ERR:

// do normal flag handling

break;

case OS_ERR_PEND_ISR:

..... and other errors - do some error handling

}

}

}

regards

Karsten