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  4. UMDF USB driver: application stream into USB frames

UMDF USB driver: application stream into USB frames

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  • D Offline
    D Offline
    Dee Veloper
    wrote on last edited by
    #1

    Hi! Currently I am writing data from my application via WriteFile to my UMDF USB driver and send the stuff over bulk endpoints. I'd like to send only single USB frames from my application to my device. Is there a way to break the data stream from the application into USB frames without applying an own transfer protocol (e.g. packet length, packet data...)? Since USB has such a protocol (framing) I think it is rather annoying to implement a new framing protocol on top of it just to make sure that my app. receives and sends only single USB frames. Any ideas? Thanks!

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    • D Dee Veloper

      Hi! Currently I am writing data from my application via WriteFile to my UMDF USB driver and send the stuff over bulk endpoints. I'd like to send only single USB frames from my application to my device. Is there a way to break the data stream from the application into USB frames without applying an own transfer protocol (e.g. packet length, packet data...)? Since USB has such a protocol (framing) I think it is rather annoying to implement a new framing protocol on top of it just to make sure that my app. receives and sends only single USB frames. Any ideas? Thanks!

      L Offline
      L Offline
      Lost User
      wrote on last edited by
      #2

      Just send the data in whatever size you have it. A couple of k at a time is OK.

      Morality is indistinguishable from social proscription

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