Setup Custom HID device

[juliuscaesar]

Posted on February 27, 2017 at 23:01

Hey guys.

I'm trying to setup Custom HID. I'd like to use an output- and input Buffer.

I have managed to setup the descriptors. I think i have done that right: Windows is correct enumerating my device.

On the other side I got a C# HID API. The Initialisation works, the HID descriptors are successfully exchanged (Output Buffer Size, Input Buffer Size are correctly recognised).

However when I try to send to send/receive message the sending/receiving fails.

in the usbd_custom_hid.c the is an USBD_ClassTypeDef  USBD_CUSTOM_HID which contains pointer to serveral functions

USBD_ClassTypeDef  USBD_CUSTOM_HID =

{

  USBD_CUSTOM_HID_Init,

  USBD_CUSTOM_HID_DeInit,

  USBD_CUSTOM_HID_Setup,

  NULL, /*EP0_TxSent*/  

  USBD_CUSTOM_HID_EP0_RxReady, /*EP0_RxReady*/ /* STATUS STAGE IN */

  USBD_CUSTOM_HID_DataIn, /*DataIn*/

  USBD_CUSTOM_HID_DataOut,

  NULL, /*SOF */

  NULL,

  NULL,      

  USBD_CUSTOM_HID_GetCfgDesc,

  USBD_CUSTOM_HID_GetCfgDesc,

  USBD_CUSTOM_HID_GetCfgDesc,

  USBD_CUSTOM_HID_GetDeviceQualifierDesc,

};

However these functions are never called. I tried calling the USBD_CUSTOM_HID_Init function manually but this did not solve the problem.

Could you help me out what to do with this ClassTypedef?

greets Julian

[fb2]

Posted on May 26, 2017 at 18:07

Hello Julian, I'm facing the same issue, did you make it work?

Thank you!

Fernando

[juliuscaesar]

Posted on May 27, 2017 at 11:45

 ,

 ,

hey,

yep i did cost me some time to figure it out, but after searching on the internet for some time i found a really helpful tutorial

https://www.youtube.com/watch?v=xufZyQf4O7Y

 ,

i configured the Custom HID driver exactly the same as the guy in the video and it worked

To verfiy that the driver works, i tested some C ♯ Hid libraries. I think it was simplehid and mightyhid. Turned out that both of them worked with my disco board. Hope that helps

[fb2]

Posted on May 29, 2017 at 13:51

Thank you Julian! I will follow your advice with this tutorial, surelly it will be helpfull.

Thank you again!

Fernando

[fb2]

Posted on June 15, 2017 at 20:32

It worked

Thank you very much! You really helped me.

Fernando