Scanf is not working in posix sample

[Jason Davis]

Hi Joel,

It looks like you a right. I found the same issue in the mailing list of
Sep2001. Your answer was to configure the clock tick driver. Is there an
example availble on
the net, that shows how to do this? This would be helpful for newbies.

Thanks
Jason 

-----Original Message-----
From: Joel Sherrill <joel at OARcorp.com> [mailto:joel.sherrill at OARcorp.com] 
Sent: Monday, May 23, 2005 12:29 AM
To: Jason Davis
Cc: rtems-users at rtems.com
Subject: Re: Scanf is not working in posix sample

Jason Davis wrote:
> Hello,
> 
> I modified a posix printf example slightly with an additional scanf. 
> But I can't figure out why the program is not running. It starts and 
> shows the printf "Hello World" string but the it stops without any 
> possible input via keyboard. I'm using a PC board with a PIII.
> 
> I added the test.c file and my makefile below. Any ideas?

Is there any chance the keyboard is polled and you need to enable the clock
tick driver?

--joel


> Regards,
> Jason
> 
> The test.c file:
> 
> /*
>  *  Simple test program -- simplified version of sample test hello.
>  */
> 
> #include <bsp.h>
> 
> #include <stdlib.h>
> #include <stdio.h>
> #include <stdlib.h>
> 
> void *POSIX_Init(
>   void *argument
> )
> {
>   int nummer;
>   printf( "\n\n*** HELLO WORLD TEST ***\n" );
>   printf( "Hello World\n" );
>   scanf("Eingabe: %d",&nummer);
>   printf( "*** END OF HELLO WORLD TEST ***\n" );
>   exit( 0 );
> }
> 
> /* configuration information */
> 
> #define CONFIGURE_TEST_NEEDS_CONSOLE_DRIVER
> 
> #define CONFIGURE_POSIX_INIT_THREAD_TABLE
> 
> #define CONFIGURE_MAXIMUM_POSIX_THREADS 2
> 
> #define CONFIGURE_INIT
> 
> #include <confdefs.h>
> 
> /* end of file */
> 
> And my makefile:
> 
> #
> #  Makefile
> #
> 
> #
> #  RTEMS_MAKEFILE_PATH is typically set in an environment variable #
> 
> EXEC=hello.exe
> PGM=${ARCH}/$(EXEC)
> 
> # optional managers required
> MANAGERS=io
> 
> # C source names
> CSRCS = test.c
> COBJS_ = $(CSRCS:.c=.o)
> COBJS = $(COBJS_:%=${ARCH}/%)
> 
> # C++ source names
> CXXSRCS =
> CXXOBJS_ = $(CXXSRCS:.cc=.o)
> CXXOBJS = $(CXXOBJS_:%=${ARCH}/%)
> 
> # AS source names
> ASSRCS =
> ASOBJS_ = $(ASSRCS:.s=.o)
> ASOBJS = $(ASOBJS_:%=${ARCH}/%)
> 
> # Libraries
> LIBS = -lrtemsall -lc
> 
> include $(RTEMS_MAKEFILE_PATH)/Makefile.inc
> 
> include $(RTEMS_CUSTOM)
> include $(PROJECT_ROOT)/make/leaf.cfg
> 
> OBJS= $(COBJS) $(CXXOBJS) $(ASOBJS)
> 
> all:    ${ARCH} $(PGM)
> 
> $(PGM): $(OBJS)
> 	$(make-exe)
> 
> j:
> 	@echo $(CFLAGS_DEBUG_V)
> 	@echo $(RTEMS_USE_GCC272)
> 


-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel at OARcorp.com                 On-Line Applications Research
Ask me about RTEMS: a free RTOS  Huntsville AL 35805
    Support Available             (256) 722-9985