Re: [ts-7000] Interrupt generation at user level(In user application)

[Jim Jackson <>]

On Fri, 2 May 2008, manmohan_thakur119 wrote:

> Dear all,
> I am using TS-7250,kernel version-2.4.26.
> I am facing a problem regarding ISR handling through DIDO port for
> user level application.

Oh dear.

check out  http://www.linux.com/feature/114206

I googled for : linux IRQ in userspace

The kernel handles IRQs. You will need to write a kernel handler/module to 
do some of the work and interface your userland program to that.


> For ISR registering we are using request_irq() for irq no. 59
> (GPIOINTR) but it is giving no. of errors and undefined reference
> during compilation through cross compiler (crosstool-cygwin-gcc-
> 3.3.4-glibc-2.3.2.tar.bz2) after inclusion of kernel level header
> files.
> #include <linux/unistd.h>
> #include <linux/ioport.h>
> #include <linux/interrupt.h>
> #include <linux/sched.h>
> #include <asm/system.h>
> #include <asm/io.h>
> #include <asm/irq.h>
>
> Errors are-
>
> $ ./arm-unknown-linux-gnu-gcc -o newSerial newSerial.c
> /cygdrive/c/DOCUME~1/DEEPAK~1/LOCALS~1/Temp/ccYV2K7a.o(.text+0x188):
> In function
> `sioEnd':
> : undefined reference to `free_irq'
> /cygdrive/c/DOCUME~1/DEEPAK~1/LOCALS~1/Temp/ccYV2K7a.o(.text+0x31c):
> In function
> `sioEnable':
> : undefined reference to `save_flags'
> /cygdrive/c/DOCUME~1/DEEPAK~1/LOCALS~1/Temp/ccYV2K7a.o(.text+0x320):
> In function
> `sioEnable':
> : undefined reference to `cli'
> /cygdrive/c/DOCUME~1/DEEPAK~1/LOCALS~1/Temp/ccYV2K7a.o(.text+0x33c):
> In function
> `sioEnable':
> : undefined reference to `request_irq'
> /cygdrive/c/DOCUME~1/DEEPAK~1/LOCALS~1/Temp/ccYV2K7a.o(.text+0x358):
> In function
> `sioEnable':
> : undefined reference to `restore_flags'
> /cygdrive/c/DOCUME~1/DEEPAK~1/LOCALS~1/Temp/ccYV2K7a.o(.text+0x3f8):
> In function
> `sioEnable':
> : undefined reference to `printk'
> /cygdrive/c/DOCUME~1/DEEPAK~1/LOCALS~1/Temp/ccYV2K7a.o(.text+0x400):
> In function
> `sioEnable':
> : undefined reference to `restore_flags'
> collect2: ld returned 1 exit status
>
> Can anybody provide a right soution for this?
> whether we can use request_irq()routine at user level or not,if not
> then what are the other solution for interrupt handling at user
> level application.
>
>

------------------------------------

Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/ts-7000/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/ts-7000/join
    (Yahoo! ID required)

<*> To change settings via email:
     
    

<*> To unsubscribe from this group, send an email to:
    

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/