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MDeva.1
MDeva.1
Associate III
December 23, 2021
Question

We can access different types of data using HID usb class?

  • December 23, 2021
  • 6 replies
  • 1135 views

Hello,

I am working on Nucleo-H745ZIQ board. I have make to the interfacing between the one application and stm32, they communication using the USB peripheral in HS. I am confuse between the two class USB custome HID and HID .Which class I have to use Custome HID or HID and after that I can able to send and receive different types of data?Can someone help to resolve this!!!

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6 replies

Walid ZRELLI
Walid ZRELLI
Visitor II
January 4, 2022

Hello @MDeva.1​ ,

Can you explain what you mean by receiving different types of data?

As well, can you describe the use case?

Otherwise, take a look at this video. It may be helpful.

BeST Regards,

Walid

MDeva.1
MDeva.1Author
Associate III
January 4, 2022

My board is connected to GuI application using the USB port and I get the data from GUI a​ND I have to give that data to DAC and after that I have generate w/f.

1. Which USB class I have to use?

2. What types of data I can access eg. Int, float, array, frame

Walid ZRELLI
Walid ZRELLI
Visitor II
January 4, 2022

hello @MDeva.1​ 

You can use the USB CDC class which allows you to send arbitrary data.

BeST Regards,

Walid

MDeva.1
MDeva.1Author
Associate III
January 4, 2022

What is difference between customs hid and Hid class​

Walid ZRELLI
Walid ZRELLI
Visitor II
January 4, 2022

In the STM32Cube and STM32_USB_Device_Library context, the HID class device provides a fixed mouse/keyboard applications, where the HID report is predefined.

Otherwise, the Custom HID option allows you to have an application-defined report descriptor, and to use both IN and OUT endpoints. Both are limited by their fixed max endpoint size and period.

MDeva.1
MDeva.1Author
Associate III
January 4, 2022

If I have to communicate with the application which install in PC and my board is connected through ​USB to PC and I have to communicate with application and baked then which USB class I have to use

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