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 ------------------------------------------------------- This sf.net email is sponsored by:ThinkGeek Welcome to geek heaven. http://thinkgeek.com/sf _______________________________________________ [EMAIL PROTECTED] To unsubscribe, use the last form field at: https://lists.sourceforge.net/lists/listinfo/linux-usb-devel