Get USB HID report descriptors via mac/win software #USB @todbot
One of the aspects of the USB Human Interface Device (HID) protocol is that isn’t clear is that HID devices transmit and receive data with “reports”, fixed-size data packets. What reports a device responds to is described by the HID Report Descriptor it hands to the operating system (OS). The OS then only permits those reports to be sent and received. This descriptor is different from the USB Config & Device Descriptors. Those two are easily discoverable using standard system tools. For whatever reason, getting HID Report Descriptors is much harder.
Todbot blogs about Windows and Mac tools to get HID report descriptors:
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