Ok it appears older kernels do not recognize the cash drawer at all. At
least not with the hid driver.

The current kernel 2.4.22 does and I can access the driver via the hid
driver and /dev/usb/hiddev*.

I can send write events and open the cash drawer with no problems or
errors.

However it seems when ever ioctl(cd,HIDIOCINITREPORT,0) is called there
is a pause. When I do a dmesg I get the following

host/usb-uhci.c: interrupt, status 2, frame# 1910
usb_control/bulk_msg: timeout
host/usb-uhci.c: interrupt, status 3, frame# 772

Also during initial recognition of the cash drawer I get a similar entry

usb_control/bulk_msg: timeout
hiddev0: USB HID v1.00 Device [APG Cash Drawer 554 HID USBPro(tm)II Interface] on 
usb1:2.0

I would not care, except that the timeout causes reading the status to
take longer than it should.

I have removed that call from the following code, and it still runs, but
it does not update. Basically in order for the following code to work I
have to make that call. Which slows things down and makes it so I can't
use the status of cash drawer in apps.

Is there another call I can make to get the data to update to current
device status? Is there something I can do to get avoid the timeout or
change it?

Here is the code I am using to determine the status

#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <stdio.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <asm/types.h>
#include <sys/signal.h>
#include <linux/hiddev.h>

int main (int argc, char **argv) {
  int cd = -1;
  struct hiddev_usage_ref usage_ref;
          
        if(argc!=2) {
                fprintf(stderr, "usage: %s hiddevice - probably /dev/usb/hiddev0\n", 
argv[0]);
                exit(1);
        }
        if((cd=open(argv[1],O_RDONLY))<0) {
                perror("hiddev open");
                exit(1);
        }
        if(ioctl(cd,HIDIOCINITREPORT,0)<0)
                exit(1);
        memset(&usage_ref,0,sizeof(usage_ref));
        usage_ref.report_type = HID_REPORT_TYPE_INPUT;
        usage_ref.report_id = 0;
        usage_ref.field_index = 0;
        usage_ref.usage_index = 0;
        ioctl(cd,HIDIOCGUCODE,&usage_ref);
        ioctl(cd,HIDIOCGUSAGE,&usage_ref);
        if(usage_ref.usage_code==0xf000f4)
                printf("%d\n",usage_ref.value);
        else
                printf("%d\n",0);
        close(cd);
        exit(0);
}

Any comments or suggestions are greatly appreciated.
-- 
Sincerely,
William L. Thomson Jr.
Support Group
Obsidian-Studios, Inc.
http://www.obsidian-studios.com



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