Hi.
This is as far as I could get without any specs.
Below is a C file that dumps the keypresses to stdout.
Keypresses are delivers pretty strangely, first the "keycode"
arrives, and then the key type. A key type indicator has
the left nibble set to 1110 or 1111 to indicate press and release,
and the rightmost nibble indicates the keygroup. 1 seems to be the thumb
keys, 2 are the keys on the left and right side of the display line,
3 are the keys on top of the display, and 4 are the cursor routing keys.
Also attached is a "lsusb -vvv" dump with the device connected.
I still have absolutely no idea how to actually write to the display.
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>
#include <linux/types.h>
#include <linux/hiddev.h>
int
main(int argc, char *argv[])
{
int fd;
if ((fd = open("/dev/usb/hiddev0", O_RDONLY)) > 0 ) {
struct hiddev_event e;
while (read(fd, &e, sizeof(e)) == sizeof(e)) {
if (e.value > 0X70) { /* key type indicator */
if ((e.value & 0XF0) == 0X70) {
printf("pressed (type %d)\n", e.value&0X0F);
} else if ((e.value & 0XF0) == 0XF0) {
printf("released (type %d)\n", e.value&0X0F);
}
} else { /* Value indicating which key was pressed */
printf("key %d ", e.value);
}
fflush(stdout);
}
return 0;
} else {
perror("open");
}
exit(EXIT_FAILURE);
}
# lsusb -vvv:
Bus 001 Device 045: ID 0798:0640 Optelec
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x0798 Optelec
idProduct 0x0640
bcdDevice 0.01
iManufacturer 1 Optelec
iProduct 2 Alva BC640
iSerial 6 00A09608574A
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 57
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 100mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 0 No Subclass
bInterfaceProtocol 0 None
iInterface 3 Alva6 Braille
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.00
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 299
Report Descriptor: (length is 299)
Item(Global): Usage Page, data= [ 0x01 0xff ] 65281
(null)
Item(Local ): Usage, data= [ 0x01 ] 1
(null)
Item(Main ): Collection, data= [ 0x01 ] 1
Application
Item(Global): Report ID, data= [ 0x05 ] 5
Item(Local ): Usage, data= [ 0x07 ] 7
(null)
Item(Global): Logical Maximum, data= [ 0x50 ] 80
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x08 ] 8
(null)
Item(Global): Logical Maximum, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report Count, data= [ 0x07 ] 7
Item(Main ): Feature, data= [ 0x01 ] 1
Constant Array Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x09 ] 9
(null)
Item(Global): Logical Maximum, data= [ 0x50 ] 80
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x0a ] 10
(null)
Item(Global): Logical Maximum, data= [ 0x05 ] 5
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x0b ] 11
(null)
Item(Global): Logical Maximum, data= [ 0x10 ] 16
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x0c ] 12
(null)
Item(Global): Logical Maximum, data= [ 0x50 ] 80
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report ID, data= [ 0x06 ] 6
Item(Local ): Usage, data= [ 0x0d ] 13
(null)
Item(Global): Logical Maximum, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x0e ] 14
(null)
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x0f ] 15
(null)
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x10 ] 16
(null)
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report Count, data= [ 0x04 ] 4
Item(Main ): Feature, data= [ 0x01 ] 1
Constant Array Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report ID, data= [ 0x07 ] 7
Item(Local ): Usage, data= [ 0x11 ] 17
(null)
Item(Global): Logical Maximum, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x12 ] 18
(null)
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report Count, data= [ 0x06 ] 6
Item(Main ): Feature, data= [ 0x01 ] 1
Constant Array Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x13 ] 19
(null)
Item(Global): Logical Maximum, data= [ 0xf4 0x01 ] 500
Item(Global): Report Size, data= [ 0x10 ] 16
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report ID, data= [ 0x08 ] 8
Item(Local ): Usage, data= [ 0x0b ] 11
(null)
Item(Global): Logical Maximum, data= [ 0x10 ] 16
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report ID, data= [ 0x09 ] 9
Item(Local ): Usage, data= [ 0x14 ] 20
(null)
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x15 ] 21
(null)
Item(Global): Logical Maximum, data= [ 0x01 ] 1
Item(Global): Report Size, data= [ 0x01 ] 1
Item(Global): Report Count, data= [ 0x02 ] 2
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report Count, data= [ 0x06 ] 6
Item(Main ): Feature, data= [ 0x01 ] 1
Constant Array Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x16 ] 22
(null)
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x05 ] 5
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report ID, data= [ 0x04 ] 4
Item(Local ): Usage, data= [ 0x06 ] 6
(null)
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x02 ] 2
Item(Main ): Input, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report ID, data= [ 0x02 ] 2
Item(Local ): Usage, data= [ 0x02 ] 2
(null)
Item(Global): Logical Maximum, data= [ 0x50 ] 80
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x03 ] 3
(null)
Item(Global): Logical Maximum, data= [ 0x28 ] 40
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x04 ] 4
(null)
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x28 ] 40
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report ID, data= [ 0x03 ] 3
Item(Local ): Usage, data= [ 0x02 ] 2
(null)
Item(Global): Logical Maximum, data= [ 0x50 ] 80
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x03 ] 3
(null)
Item(Global): Logical Maximum, data= [ 0x28 ] 40
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x01 ] 1
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Local ): Usage, data= [ 0x05 ] 5
(null)
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x28 ] 40
Item(Main ): Output, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report ID, data= [ 0x0a ] 10
Item(Local ): Usage, data= [ 0x18 ] 24
(null)
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x07 ] 7
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report ID, data= [ 0x0b ] 11
Item(Local ): Usage, data= [ 0x17 ] 23
(null)
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Count, data= [ 0x0f ] 15
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable Absolute No_Wrap Linear
Preferred_State No_Null_Position Non_Volatile
Bitfield
Item(Global): Report ID, data= [ 0x0c ] 12
Item(Local ): Usage, data= [ 0x19 ] 25
(null)
Item(Global): Logical Maximum, data= [ 0xff 0x00 ] 255
Item(Global): Report Size, data= [ 0x08 ] 8
Item(Global): Report Count, data= [ 0x02 ] 2
Item(Main ): Feature, data= [ 0x02 ] 2
Data Variable 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 0x0040 1x 64 bytes
bInterval 10
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 8 Mass Storage
bInterfaceSubClass 6 SCSI
bInterfaceProtocol 80 Bulk (Zip)
iInterface 5 Alva6 memory
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x03 EP 3 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0040 1x 64 bytes
bInterval 0
Device Status: 0x0000
(Bus Powered)
--
CYa,
⡍⠁⠗⠊⠕ | Debian Developer <URL:http://debian.org/>
.''`. | Get my public key via finger [EMAIL PROTECTED]
: :' : | 1024D/7FC1A0854909BCCDBE6C102DDFFC022A6B113E44
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