dbushell / deno_usbhidapi

🦕 Deno FFI bindings for the HIDAPI library to access USB devices.

David Bushell

deno_usbhidapi's Issues

Query Report Descriptor

Hi, thanks for developing this library. For my use case I need to read the report descriptor dynamically. Unfortunately this library has no way of doing so. Is there any way I could get output like that of hid-recorder?

$ hid-recorder                                                                                                                                                        
Available devices:
/dev/hidraw0:	Framework HDMI Expansion Card
/dev/hidraw1:	FRMW0001:00 32AC:0006
/dev/hidraw2:	PIXA3854:00 093A:0274
/dev/hidraw3:	8BitDo Lite 2
Select the device event number [0-3]: 3
# 8BitDo Lite 2
# 0x05, 0x01,                    // Usage Page (Generic Desktop)        0
# 0x09, 0x05,                    // Usage (Game Pad)                    2
# 0xa1, 0x01,                    // Collection (Application)            4
# 0x85, 0x01,                    //  Report ID (1)                      6
# 0x15, 0x00,                    //  Logical Minimum (0)                8
# 0x25, 0x01,                    //  Logical Maximum (1)                10
# 0x35, 0x00,                    //  Physical Minimum (0)               12
# 0x45, 0x01,                    //  Physical Maximum (1)               14
# 0x75, 0x01,                    //  Report Size (1)                    16
# 0x95, 0x14,                    //  Report Count (20)                  18
# 0x05, 0x09,                    //  Usage Page (Button)                20
# 0x19, 0x01,                    //  Usage Minimum (1)                  22
# 0x29, 0x14,                    //  Usage Maximum (20)                 24
# 0x81, 0x02,                    //  Input (Data,Var,Abs)               26
# 0x05, 0x01,                    //  Usage Page (Generic Desktop)       28
# 0x25, 0x07,                    //  Logical Maximum (7)                30
# 0x46, 0x3b, 0x01,              //  Physical Maximum (315)             32
# 0x75, 0x04,                    //  Report Size (4)                    35
# 0x95, 0x01,                    //  Report Count (1)                   37
# 0x65, 0x14,                    //  Unit (EnglishRotation: deg)        39
# 0x09, 0x39,                    //  Usage (Hat switch)                 41
# 0x81, 0x42,                    //  Input (Data,Var,Abs,Null)          43
# 0x26, 0xff, 0x00,              //  Logical Maximum (255)              45
# 0x46, 0xff, 0x00,              //  Physical Maximum (255)             48
# 0x09, 0x30,                    //  Usage (X)                          51
# 0x09, 0x31,                    //  Usage (Y)                          53
# 0x09, 0x32,                    //  Usage (Z)                          55
# 0x09, 0x35,                    //  Usage (Rz)                         57
# 0x75, 0x08,                    //  Report Size (8)                    59
# 0x95, 0x04,                    //  Report Count (4)                   61
# 0x81, 0x02,                    //  Input (Data,Var,Abs)               63
# 0x05, 0x02,                    //  Usage Page (Simulation Controls)   65
# 0x15, 0x00,                    //  Logical Minimum (0)                67
# 0x26, 0xff, 0x00,              //  Logical Maximum (255)              69
# 0x09, 0xc4,                    //  Usage (Accelerator)                72
# 0x09, 0xc5,                    //  Usage (Brake)                      74
# 0x95, 0x02,                    //  Report Count (2)                   76
# 0x75, 0x08,                    //  Report Size (8)                    78
# 0x81, 0x02,                    //  Input (Data,Var,Abs)               80
# 0xc0,                          // End Collection                      82
# 
R: 83 05 01 09 05 a1 01 85 01 15 00 25 01 35 00 45 01 75 01 95 14 05 09 19 01 29 14 81 02 05 01 25 07 46 3b 01 75 04 95 01 65 14 09 39 81 42 26 ff 00 46 ff 00 09 30 09 31 09 32 09 35 75 08 95 04 81 02 05 02 15 00 26 ff 00 09 c4 09 c5 95 02 75 08 81 02 c0

I wouldn't need the parsed descriptions or anything like that, just access to a Uint8Array would be perfectly fine.