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direction IN / OUT

Mari Vos

I'm a new user and after reading documentation still confused about the direction to use. To send data from my PC to the periphery via the USB I have to use endpointbufferOUT+ IOCTL_EZUSB_WRITE or is it endpointIN+IOCTL_READ or maybe some other combination??? I hope there is someone to help me to clear this basic point to get things working.Thanks,Mari

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  • 0

    Hi Mari,

    I think your problem is more related to USB rather than Keil or C.

    PC is usually called HOST and the periphery is your DEVICE. Since there are many Classes of devices in USB world, you have to understand what exactly you want to do when you say you want to send data. Is it an Interrupt, Bulk, Isochronous or simply a Control transfer?

    BTW, what's the document you are reading? It's not easy to read your mind.

    Wish you good luck.

    Frank

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  • 0

    Hi Mari,

    I think your problem is more related to USB rather than Keil or C.

    PC is usually called HOST and the periphery is your DEVICE. Since there are many Classes of devices in USB world, you have to understand what exactly you want to do when you say you want to send data. Is it an Interrupt, Bulk, Isochronous or simply a Control transfer?

    BTW, what's the document you are reading? It's not easy to read your mind.

    Wish you good luck.

    Frank

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