USB HID Gereric buffer issue

vincent_hu — Wed, 07 Nov 2018 02:51:24 GMT

Hi Sir,

When I was evaluating the LPC54628 development board , I met an issue .

Example : SDK\LPC54628J512\boards\lpcxpresso54628\usb_examples\usb_device_hid_generic

Evaluation Board : LPCXpresso54628

NXP Original Example : USB HID receive data , then send data directly.

Default USB package length = 8 bytes

This example could run well and PC send bytes(less than 8 bytes) to USB HID, then USB HID reply these bytes to PC directly.

I tried to modify data length large than 8 (e.g. 64), but set point at USB_Devicehid irq, see g_UsbDeviceHidGeneric.buffer[ ] size still is 8 bytes.

I believe it should be modified other code, hope your suggestion ASAP.

BTW : I think that user should not modify other layer code except some Marco Definition and user self-definition command while USB recognize.

Thanks.

Best Regards,

Vincent

Re: USB HID Gereric buffer issue

Hui_Ma — Thu, 08 Nov 2018 06:09:26 GMT

Hi Vincent,

I checked you submitted the same question at case: 00187393.

Please check my reply at that case.

I suggest to follow the [readme.pdf] file to make related modification at PC test tool Wimar’s USB HID Component.
The [readme.pdf] located at below path:
..\SDK_2.4.1_LPCXpresso54628\boards\lpcxpresso54608\usb_examples\usb_device_hid_generic\bm

Wish it helps.

Have a great day,
Mike

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topic Re: USB HID Gereric buffer issue in MCUXpresso SDK

USB HID Gereric buffer issue

Re: USB HID Gereric buffer issue