Re: [Xenomai-help] Interrupt service routine problem

[Stefan Kisdaroczi <kisda@domain.hid>]

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Hi,

the rt_intr_* functions are disabled by default in the kernel configuration [1].

You can enable them here:
Real-time subsystem -> Interfaces -> Native API -> Interrupts

For device drivers its suggested that you use the RTDM skin and not the
rt_intr_* calls from the native API.

kisda

[1] https://mail.gna.org/public/xenomai-help/2006-07/msg00197.html


Shashank Bhatia schrieb:
> Dear All,
> 
> I was trying to make a simple kernel module, and was unable to insert it into 
> the kernel space. The code and Error messages are provided hereunder:
> 
> 
> Code:
> #include <native/task.h>
> #include <native/timer.h>
> #include <native/intr.h>
> 
> #define STACK_SIZE         0 
> 
> RT_INTR isrDesc;
> 
> 
> int isrKbdHandler(struct xnintr* _idesc) {
> 
> 
>   printk("module: catch a key\n");
> 
>   return RT_INTR_PROPAGATE; 
> 
> }
> 
> 
> 
> int init_module (void) {
> 
>   printk("module: Init\n");
>   rt_intr_create(&isrDesc, "kbdisr", (unsigned)1, &isrKbdHandler, NULL, 0);
>   rt_intr_enable(&isrDesc);
> 
> 
>   return 0;
> }
> 
> 
> 
> void cleanup_module (void) {
> 
>  
>   rt_intr_delete(&isrDesc);
>   
>   printk("module: exit\n");
> }
> 
> MODULE_LICENSE("GPL");
> 
> 
> 
> 
> Makefile:
> 
> 
> obj-m  = module.o
> 
> 
> KDIR	= /lib/modules/$(shell uname -r)/build
> PWD		= $(shell pwd)
> EXTRA_CFLAGS = -I/usr/xenomai/include -I/usr/include/ 
> default:
> 	$(MAKE) -C $(KDIR) SUBDIRS=$(PWD) modules
> 
> clean:
> 	rm -f *.o *.ko *.mod.c *symvers *~
> 
> 
> 
> Error message:
> make -C /lib/modules/2.6.25.11-default/build 
> SUBDIRS=/home/bhatia/rtprog/interupt modules
> make[1]: Entering directory `/usr/src/linux-2.6.25.11'
>   CC [M]  /home/bhatia/rtprog/interupt/module.o
>   Building modules, stage 2.
>   MODPOST 1 modules
> WARNING: "rt_intr_enable" [/home/bhatia/rtprog/interupt/module.ko] undefined!
> WARNING: "rt_intr_create" [/home/bhatia/rtprog/interupt/module.ko] undefined!
> WARNING: "rt_intr_delete" [/home/bhatia/rtprog/interupt/module.ko] undefined!
>   CC      /home/bhatia/rtprog/interupt/module.mod.o
>   LD [M]  /home/bhatia/rtprog/interupt/module.ko
> make[1]: Leaving directory `/usr/src/linux-2.6.25.11'
> 
> 
> 
> Error while insmoding:
> insmod: error inserting './module.ko': -1 Unknown symbol in module
> 
> 
> 
> 
> 
> 
> 
> Thanks and Regards,
> 
> Shashank
> 
> -------------------------------------
> Hi-Tech Gears Limited, Gurgaon, India
> 
> 
> 
> 
> 
> _______________________________________________
> Xenomai-help mailing list
> Xenomai-help@domain.hid
> https://mail.gna.org/listinfo/xenomai-help
> 



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