[ECOS] Timer tick dosen't work, when printf string > 24

Andrew Lunn andrew@lunn.ch
Tue Apr 11 08:20:00 GMT 2006


On Tue, Apr 11, 2006 at 04:10:46PM +0800, ?????? wrote:

Hi ??????

> Hi,
> I used Sumsung s3c2410 development board(SMDK2410) to run simple-alarm
> example program.
> I add LED flash function in hal_clock_reset() and add one line printf
> function in cyg_user_start() in simple-alarm.c file.
> 
> 
> void cyg_user_start(void)
> {
>   printf("12345678901234567890123\n");//Add one line prinf function here
> 
>   cyg_thread_create(4, alarm_prog, (cyg_addrword_t) 0,
>       "alarm_thread", (void *) stack[0],
>       STACKSIZE, &thread[0], &thread_obj[0]);
>   cyg_thread_resume(thread[0]);
> }
> 
> If string lenth in prinf function is small than 24, the timer tick is
> working correctly and LED flashing.
> 
> If I modify printf("123456789012345678901234\n"), now the string lenth
> become 25 then time tick dosen't work and LED dosen's flashing.
> 
> This is very strange problem.

No, not really. Try enabling CYGPKG_INFRA_DEBUG

        Andrew

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