We are running a survey to help us improve the experience for all of our members. If you see the survey appear, please take the time to tell us about your experience if you can.
Thanks in Advance. I am using keil HID example and win-api to make a usb hid device for sending and receiving data using interrupt transfer. I define the package size as 64 bytes, and of cause if the data sended by the device less than 64 bytes, the host(Overlapped mode) will come up with a timeout error. And I do search in the forum, everybody says I should send a ZLP(zero length package), but I could not find any detail about what ZLP real is, and how to send a ZLP by the device or by the host. So I will appreciate if anybody tell me what can I do. Forgive my fool. Thanks again.
"HID report" is general term, which collects input / output / feature reports.
The report type is determined by the place where the report passes. Interrupt IN endpoint - input report Interrupt OUT endpoint - output report EP0 IN (Get_Report request) - input / feature report EP0 OUT (Set_Report request) - output / feature report
Tsuneo