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in HID, is it Possible use EP3?

ghanshyam gajjar

hello frnds, I am using USBHID code(available on keil site.) now in hid communication Endpoint 0 & 1 used. But this pipe have up to 64 bytes limitations. I successfully communicate up to 64 bytes.
now in my application I have to communicate with HID device up to 150 bytes so I want to use ENDPOINT 3(isochronus pipe) . so is it possible to use endpoint 3 in HID communication.?? plz any buddy have solution plz reply me….

  • 0

    Hi,
    Use can use other end point by modify usbdesc.c by adding more end point to it and modify "#define USB_EP_EVENT 0x0007" in usbcfg.h

    Regards,

    John

  • 0 in reply to Peter Ng

    hello john thanks for reply . but in HIDDescriptior.pdf(available on usb.org) they defin that if you are using HID communication than you can use only Endpoin 0 & 1. and i already change in my code what you are suggested to me. and than when i downdoad code to hardware than some pc hang problem occure.and communication between pc & device not working properly.so u have any idea plz reply me

    thanks 4 reply..
    regards
    suprit