LPC MicrocontrollersのトピックRe: modify lpcxpresso55s16 hid mouse + keyboard example, but it continue to send keyboard packet

modify lpcxpresso55s16 hid mouse + keyboard example, but it continue to send keyboard packet

felix1 — Fri, 22 Sep 2023 10:05:51 GMT

Hi,

based on example lpcxpresso55s16_dev_composite_hid_mouse_hid_keyboard_freertos, I modify it to as HID keyboard + HID generic.

When I got keyscan, I use

USB_DeviceHidSend(s_UsbDeviceComposite->hidKeyboardHandle, USB_HID_KEYBOARD_ENDPOINT_IN, s_UsbDeviceHidKeyboard.buffer, USB_HID_KEYBOARD_REPORT_LENGTH);

to send key packet, but it continue to send key packet and won't stop.

For example, keyscan got 'b', and use USB_DeviceHidSend() to send HID packet,

but the PC continue to receive 'bbbbbbbb' for thousand times.

device[59] send 'b' report packet once, but device[61] continue to send.

I have commented the USB_DeviceHidKeyboardAction() in function USB_DeviceHidKeyboardCallback().

Re: modify lpcxpresso55s16 hid mouse + keyboard example, but it continue to send keyboard packet

felix1 — Mon, 25 Sep 2023 09:42:01 GMT

Hi,

I check the origin example lpcxpresso55s16_dev_composite_hid_mouse_hid_keyboard_freertos again,

it send HID packet 'a' just once. (I modify to send 'a' than pageup)

Why my code repeat to send HID packet? Anyone can guide me the direction to trace?

Re: modify lpcxpresso55s16 hid mouse + keyboard example, but it continue to send keyboard packet

felix1 — Tue, 26 Sep 2023 02:23:23 GMT

Hi NXP,

I attached the project files that can reproduce the issue.

with a little modification.

1. change full speed to high speed
2. comment mouse rectangle action
3. call USB_DeviceHidSend() in USB_DeviceHidMouseCallback() once

SDK 2.14.0

Re: modify lpcxpresso55s16 hid mouse + keyboard example, but it continue to send keyboard packet

felix1 — Tue, 26 Sep 2023 08:29:41 GMT

I know the answer now, need to release the key.