[libhid-discuss] unable to get input report

[stdht.inbox at gmail.com]

Hello, Charles.

I've made some new experiments. I make hid_interrupt_read in a loop
as before:

 while(1) {
  ret = hid_interrupt_read(hid, 0x82, buf, 64, 100);
  usleep(1000*300);
  if (ret != HID_RET_SUCCESS) {
       printf( "hid_interrupt_read failed with return code %d (%s)\n", ret, hid_strerror(ret));
  } else {

  //printf( "interrupt\n" );
    printf( "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n" );
      for (i=0;i<20; i++) printf( "%u ", buf[i] );
      printf( "\n" );
    printf( "!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!\n" );

  }
 }

 It's surprising but device returns correct information!
 What I receive:

hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)
hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)
hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)
hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
14 49 50 51 52 53 54 55 56 57 48 49 50 56 13 0 0 0 0 0 
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)
hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
9 49 50 51 52 53 54 55 48 13 0 0 0 0 0 0 0 0 0 0 
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
13 49 50 51 52 53 54 55 56 57 48 49 50 13 0 0 0 0 0 0 
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)
hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)
hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
13 49 50 51 52 53 54 55 56 57 48 49 50 13 0 0 0 0 0 0 
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
hid_interrupt_read failed with return code 21 (libhid: interrupt read failed)


PS. may be my mistake is that I build my prog and libusb and libhid under 2.4.31
and try it under 2.4.25?? Or in other case there is something in
usb-uhci...

Best regards,
Serg.