How to use interrupt?

thanks i can understand,but in the following simple progamme with two thread,highest priority thread runs continuouslly ,it never dies...so here no need for infinite loop..?

# include <cyg/hal/hal_arch.h># include <cyg/kernel/kapi.h># include <cyg/hal/io.h>

unsigned char ledpio;

// These numbers depend entirely on your application# define NUMBER_OF_WORKERS 4# define PRODUCER_PRIORITY 18# define WORKER_PRIORITY 17# define PRODUCER_STACKSIZE CYGNUM_HAL_STACK_SIZE_TYPICAL# define WORKER_STACKSIZE (CYGNUM_HAL_STACK_SIZE_MINIMUM + 1024)

static unsigned char producer_stack[PRODUCER_STACKSIZE];

static unsigned char worker_stacks[NUMBER_OF_WORKERS][WORKER_STACKSIZE];

static cyg_handle_t producer_handle, worker_handles[NUMBER_OF_WORKERS];

static cyg_thread producer_thread,worker_threads[NUMBER_OF_WORKERS];

static void

producer(cyg_addrword_t data)

{

ledpio = 0x8; //

IOWR (LED_PIO_BASE , 0, ledpio);

}

static void

worker(cyg_addrword_t data)

{

ledpio = 0x1; //

IOWR (LED_PIO_BASE , 0, ledpio);

}

void cyg_user_start(void)

{

int i;

cyg_thread_create(PRODUCER_PRIORITY, &producer, 0, "producer",

producer_stack, PRODUCER_STACKSIZE,

&producer_handle, &producer_thread);

cyg_thread_resume(producer_handle);

for (i = 0; i < NUMBER_OF_WORKERS; i++) {

cyg_thread_create(WORKER_PRIORITY, &worker, i, "worker",

worker_stacks, worker_stacksize,

&(worker_handles), &(worker_threads));

cyg_thread_resume(worker_handles);

}

}

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originally posted by glecordier@Feb 8 2006, 06:45 AM

your thread runs once and then dies

you need a infinite loop in

static void ledglow(cyg_addrword_t data)

{

while (1){

ledpio = ledpio^0x10; //

iowr (led_pio_base , 0, ledpio);

}

}

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