topic Re: USB HID Communication in MCX Microcontrollers

USB HID Communication

berndgrossmann — Wed, 29 Jan 2025 10:55:47 GMT

I am using the dev_composite_hid_mouse_hid_ keyboard_bm sample and try to send and receive some data with MCXA153 controller.

What ist the best way to send some data (USB_DeviceSendRequest) and detect a sucessful transmission?

Loop?

-> Ready to send?

-> Send data

-> Wait some time to detect a sucessful transmission?

-> Next data

In posts are some NACK, busy flags proposals in some HID codes.

Re: USB HID Communication

Alice_Yang — Thu, 06 Feb 2025 09:14:47 GMT

Hello @berndgrossmann

Yes, I think your idea is correct. First, confirm that it is ready to send. Then, send the data. Next, confirm that the data has been sent successfully. After that, proceed to the next loop.

Alice

Re: USB HID Communication

berndgrossmann — Thu, 06 Feb 2025 12:27:24 GMT

Thanks, but how can I detect a ready to send?

Is there any USB Stack documentation available?

How can I detect a busy transmission?

Re: USB HID Communication

berndgrossmann — Mon, 10 Feb 2025 09:27:52 GMT

Thanks, but how can I detect a ready to send?

Is there any USB Stack documentation available?

How can I detect a busy transmission?

Re: USB HID Communication

Alice_Yang — Wed, 19 Feb 2025 03:49:18 GMT

Hello @berndgrossmann

USB Stack documentation please refer to:

https://mcuxpresso.nxp.com/mcuxsdk/latest/html/middleware/usb/docs/index.html

Alice