Alexander Juling schrieb:
Charles Lepple schrieb:
On Sep 16, 2009, at 4:42 AM, Alexander Juling wrote:
Unfortunately I got stuck now with a major problem. The keyboard is
not in a standard keyboard body, so the labeling of the keys differs
from a standard one. This won't be a problem unless three of the
keys return the same result for the interrupt read function. Is
there any way to differ the three key from each other? Unfortunately
I cannot figure out, which keys they are originally.
Is it possible that you need to send some additional information to
put the keyboard into a different mode?
I don't know much about it, but HID keyboards have a "boot protocol
mode" which is supposed to be a simplified version of the HID protocol.
What does 'lsusb -v' say for this keyboard?
I just need to know, which key is pressed and additional would send
some information to the keyboard that will enable the caps-lock light
or the num-lock light, but that seems to be another topic (even though
it would be nice to receive an answer if you know it right now). The
important part is, that three of the keys send back the same
information back as it seems.
I'm right now not at the office to send the lsusb -v, will do it tomorrow
I haven't done the hid_set_input_report(...) command before doing
hid_interrupt read. Could that be the problem?
This is what I've done (left out all the initialization and error
receiving):
#define EP_HID_IN 0x81
#define PACKET_INT_LEN 10
char answer[PACKET_INT_LEN];
ret = hid_interrupt_read(hid, EP_HID_IN, answer, PACKET_INT_LEN, timeout);
printf("Returned: %d,%d,%d,%d,%d,%d,%d,%d.\n", answer[0], answer[1],
answer[2], .... , answer[7]);
Here ist the lsubs -v output.
Bus 001 Device 005: ID 07c0:0138 Code Mercenaries Hard- und Software GmbH
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x07c0 Code Mercenaries Hard- und Software GmbH
idProduct 0x0138
bcdDevice 10.98
iManufacturer 1 Code Mercenaries
iProduct 2 TEKWorx Limited interfaceIT CDU
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 34
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 4 HID Keyboard
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 1 Keyboard
iInterface 5 EP1 Int
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.10
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 80
Report Descriptor: (length is 80)
Item(Global): Usage Page, data= [ 0x01 ] 1
Generic Desktop Controls
Item(Local ): Usage, data= [ 0x06 ] 6
Keyboard
Item(Main ): Collection, data= [ 0x01 ] 1
Application
Item(Global): Usage Page, data= [ 0x07 ] 7
Keyboard
Item(Local ): Usage Minimum, data= [ 0xe0 ] 224
Control Left
Item(Local ): Usage Maximum, data= [ 0xe7 ] 231
GUI Right
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x08 ] 8
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position
Non_Volatile Bitfield
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Input, data= [ 0x01 ] 1
Constant Array Absolute No_Wrap Linear
Preferred_State No_Null_Position
Non_Volatile Bitfield
Item(Global): Report Count, data= [ 0x05 ] 5
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Global): Usage Page, data= [ 0x08 ] 8
LEDs
Item(Local ): Usage Minimum, data= [ 0x01 ] 1
NumLock
Item(Local ): Usage Maximum, data= [ 0x05 ] 5
Kana
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position
Non_Volatile Bitfield
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x03 ] 3
Item(Main ): Output, data= [ 0x01 ] 1
Constant Array Absolute No_Wrap Linear
Preferred_State No_Null_Position
Non_Volatile Bitfield
Item(Global): Report Count, data= [ 0x06 ] 6
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0xa4 0x00 ] 164
Item(Global): Usage Page, data= [ 0x07 ] 7
Keyboard
Item(Local ): Usage Minimum, data= [ 0x00 ] 0
No Event
Item(Local ): Usage Maximum, data= [ 0xa4 ] 164
ExSel
Item(Main ): Input, data= [ 0x00 ] 0
Data Array Absolute No_Wrap Linear
Preferred_State No_Null_Position
Non_Volatile Bitfield
Item(Global): Usage Page, data= [ 0x07 ] 7
Keyboard
Item(Local ): Usage Minimum, data= [ 0x00 ] 0
No Event
Item(Local ): Usage Maximum, data= [ 0xff ] 255
(null)
Item(Global): Logical Minimum, data= [ 0x00 ] 0
Item(Global): Logical Maximum, data= [ 0x7f ] 127
Item(Global): Report Count, data= [ 0x06 ] 6
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Main ): Feature, data= [ 0x00 ] 0
Data Array Absolute No_Wrap Linear
Preferred_State No_Null_Position
Non_Volatile Bitfield
Item(Main ): End Collection, data=none
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 10
Device Status: 0x0002
(Bus Powered)
Remote Wakeup Enabled
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