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How to adjust USB HID MAX PACKET SIZE

Tan Sun
Intellectual 1810 points

Other Parts Discussed in Thread: MSP430F5529

i'm using MSP430F5529, USB HID, for data transfer.

When I send 48byte data, I found the receive data front 36 byte is correct, but after 36btye is error, always.

My setting of packet size, MAX_PACKET_SIZE = 0x40

Can I adjust this size by myself? I need reduce this packet size to located issue. 

  • 0
    TI__Expert 6760 points

    Hello,

    if you are seeing errors, it might be that your HID report (report_desc_HID0[] in descriptors.c) is probably not laid out correctly. 

    Here are some documents that might help with understanding the HID report:

    HID1_11.pdf   - document for explanation of fields and their values

    Hut1_11.pdf  - document for usage tables and ids and report examples

    Regards,

    Arthi Bhat

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