wrong with insn!

Hi:

    I am using pci1784 in rtlinux3.2(redhat8.0,comedi-0.7.60.comedilib-0.7.19) kernel space.

    following is a part of my code:

   //1784.c 

    #define subdev     6
    #define N_SAMPLE   2
    unsigne int mirror 1   // /dev/comedi1
    
    int channel=1;
    int range=0;

    int init_module(void)
    {
      
      .............

      insn.subdev=6;
      insn.insn=INSN_READ;
      insn.n=2;
      insn.chanspec=CR_PACK(channel,range,0);
      insn.data=data;
    
      int ret;
      ret=comedi_lock(mirror,subdev);
      ret=comedi_open(mirror);
      if(ret<0)
      {
        rtl_printf("wrong with open \n");
        return 1;
      }

      ret=comedi_do_insn(mirror,&insn);
      if(ret<0)
      {
       rtl_printf("wrong wtih read \n");
       return 1;
      }   
  
    ..............
  
  }



  comepile 1784.c to 1784.o

  run following command:

  modprobe comedi
  modprobe kcomedilib
  modprobe pci1784
  /usr/sbin/comedi_config /dev/comedi1 pci1784

 /usr/rtlinux/bin/rtlinux start

 insmod 1784.o

 Wrong message is:

 .............
 adv_pci1784:EDBG :BGN pci1784_insn_read_cnt(...)
                   data[0]=0,data[1]=173
 adv_pci1784:EDBG :END pci1784_insn_read_cnt(...)
  
 BUG: result of insn!=insn.n  
 
 what's meaning of the last message? how to resolve? 
 maybe my code is wrong or cann't use 1784 in kernel space?

 Thanks for your help!
 

 


　　　　　　　　liuxiaomei_521_at_163.com
　　　　　　　　　　2004-06-24

Received on 2004-06-24Z04:16:38