2175e1ed74
This is cleaner IMO. * usb_hid_item deals with parsing the report descriptor. * usb_hid_usage has tables that define each usage.
20 lines
695 B
Markdown
20 lines
695 B
Markdown
# HID report descriptor item parser
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## Example
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```rs
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const QEMU_USB_TABLET: &[u8] = &[
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0x05, 0x01, 0x09, 0x02, 0xa1, 0x01, 0x09, 0x01, 0xa1, 0x00, 0x05, 0x09, 0x19, 0x01, 0x29,
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0x03, 0x15, 0x00, 0x25, 0x01, 0x95, 0x03, 0x75, 0x01, 0x81, 0x02, 0x95, 0x01, 0x75, 0x05,
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0x81, 0x01, 0x05, 0x01, 0x09, 0x30, 0x09, 0x31, 0x15, 0x00, 0x26, 0xff, 0x7f, 0x35, 0x00,
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0x46, 0xff, 0x7f, 0x75, 0x10, 0x95, 0x02, 0x81, 0x02, 0x05, 0x01, 0x09, 0x38, 0x15, 0x81,
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0x25, 0x7f, 0x35, 0x00, 0x45, 0x00, 0x75, 0x08, 0x95, 0x01, 0x81, 0x06, 0xc0, 0xc0,
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];
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dbg!(usb_hid_report_descriptor::parse(QEMU_USB_TABLET).collect::<Vec<_>>());
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```
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## References
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* <https://www.usb.org/sites/default/files/hid1_11.pdf>
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