locking the mutex

Hi,

Whats wrong with my code??

My system is running with two cpu's.

To get started with the different commands I'm just testing with a Hello World app:

int main()

{

char *test;

test = mutex_uart1_name;

int i = 0;

while(1)

{

if (altera_avalon_mutex_trylock(&test, 16) == 0)

{

printf("cpu 1: int = %i. hello from nios ii!\n", i);

altera_avalon_mutex_unlock(&test);

i++;

}

usleep(2000000);

}

return 0;

}

The application is running on both cpu's, but even though the trylock returns 0 (=mutex lock ok), the other cpu's also get to lock the mutex, or, i guess, none of them do.....

I also wonder why this code is not working (skipping the test-pointer):

int main()

{

int i = 0;

while(1)

{

if (altera_avalon_mutex_trylock(mutex_uart1_name, 0) == 0)

{

printf("cpu 2: int = %i. hello from nios ii!\n", i);

altera_avalon_mutex_unlock(mutex_uart1_name);

i++;

}

usleep(2000000);

}

return 0;

}

Stian