nrf52840 DK usbhid generic received message divided to multi packet

RE: nrf52840 DK usbhid generic received message divided to multi packet

ovrebekk — Fri, 06 Mar 2020 12:27:56 GMT

Hi again

They tried to reproduce the issue, but they were not able to get your web service to work. Instead they used the modified code to run the test:

The code feeds 512 Bytes into the USB stack EP1 through app_usbd_hid_generic_in_report_set(xxx, 512) in function send_pkt().

What they see on the receiving side is that the buffer gets subdivided into 8 packets and they all get transferred.

They end up with the following conclusion:

They cannot reproduce the issue with their setup, but in general USB stack seems to be capable of transferring big reports.

They need some input from you to investigate this further:

can you isolate the issue so that the Chrome is not needed?;
can you check and let us know how many IN frames you provide between OUT frames to convey the report (you need at least 6 IN packets to convey the message)?

Best regards
Torbjørn

RE: nrf52840 DK usbhid generic received message divided to multi packet

ovrebekk — Tue, 03 Mar 2020 08:41:09 GMT

Hi Albert

Thanks for the added information.

Just a quick update to let you know you're not forgotten. The developers will try to reproduce the issue this week, so I hope to have some news for you soon.

Best regards
Torbjørn

RE: nrf52840 DK usbhid generic received message divided to multi packet

AlbertNicolai — Mon, 24 Feb 2020 09:03:49 GMT

I modify main.c in example usb_hid_generic, test it with macOS 10.14.6, Google Chrome Version 80.0.3987.116 (Official Build) (64-bit). Please test with link https://www.passwordless.dev/passwordless#heroFoot

Best regards

Nicolai

RE: nrf52840 DK usbhid generic received message divided to multi packet

ovrebekk — Mon, 24 Feb 2020 08:10:23 GMT

Hi Nicolai

It would be interesting to know how you are interfacing to the HID device from the host side?

Are you writing some custom software for Windows/Linux to access the HID device, or using some off the shelf test software?

Best regards
Torbjørn

RE: nrf52840 DK usbhid generic received message divided to multi packet

AlbertNicolai — Sat, 22 Feb 2020 05:06:28 GMT

Thank you, if you need anything to investigate this, I will provide for you.

Best regards,

Nicolai

RE: nrf52840 DK usbhid generic received message divided to multi packet

ovrebekk — Fri, 21 Feb 2020 13:32:30 GMT

I will need some help from the developers to investigate this. I can't promise a schedule yet unfortunately, but I will try to provide an update next week.

Best regards
Torbjørn

RE: nrf52840 DK usbhid generic received message divided to multi packet

AlbertNicolai — Thu, 20 Feb 2020 02:00:32 GMT

Hi, I tried to increase the REPORT_COUNT field but after that I can't received anything while if it is 64, I can receive packet <= 64 bytes

RE: nrf52840 DK usbhid generic received message divided to multi packet

AlbertNicolai — Wed, 19 Feb 2020 14:54:28 GMT

Hi,

I checked function endpoint_out_event_handler in app_usbd_hid.c. I insert a delay 1ms at the begin of this function and debug on nrf528240 dk. I saw that all packets is sent but sometimes p_event->drv_evt.data.eptransfer.status = NRF_USBD_EP_WAITING so hid_user_ev_handler (in main.c) wasn't called with event = APP_USBD_HID_USER_EVT_OUT_REPORT_READY.

RE: nrf52840 DK usbhid generic received message divided to multi packet

ovrebekk — Wed, 19 Feb 2020 14:16:04 GMT

Sending 343 bytes won't work if your descriptor is only set up for 64 byte reports.

Have you tried to increase the REPORT_COUNT field in the HID descriptor to allow for longer packets?

Best regards
Torbjørn

RE: nrf52840 DK usbhid generic received message divided to multi packet

AlbertNicolai — Tue, 18 Feb 2020 03:54:27 GMT

Hi, it is main.c for test, please replace main.c in examples/peripheral/usbd_hid_generic and test with https://www.passwordless.dev/passwordless#heroFoot

devzone.nordicsemi.com/.../8750.main.c

RE: nrf52840 DK usbhid generic received message divided to multi packet

AlbertNicolai — Mon, 17 Feb 2020 15:46:42 GMT

[quote userid="2116" url="~/f/nordic-q-a/57812/nrf52840-dk-usbhid-generic-received-message-divided-to-multi-packet/234696"]report[/quote]

I want to setup a full-speed usb device with two 64-bits endpoints (1 IN and 1 OUT).

I just changed report descriptor (USBD_GENERIC_REPORT_DESCRIPTOR) in examples/peripheral/usbd_hid_generic.

I want to received a message (>300 bytes) but I just received 2 packets:

In Packet 1: Len = 0x0157 = 343 bytes is length of message, Data has length = 64 - 4 (CID bytes) -1 (CMD) - 2 (Len) = 57 bytes

In Packet 2: index is index of continue packet, Data has length = 64 - 4 - 1 = 59 bytes

Packet 3 has 59 bytes data with index = 01, but I don't receive it and following packets

And one more infomation, I tested on macOS 10.14.6

Please help me, thanks!

RE: nrf52840 DK usbhid generic received message divided to multi packet

ovrebekk — Mon, 17 Feb 2020 14:53:05 GMT

I am a bit confused by your report descriptor. It seems to set up 64 bytes of IN data and 64 bytes of OUT data, not more than that.

Are you using a different descriptor when trying to send more than 64 bytes in one go?

When you receive two packets, how much data is there in each packet?

Best regards
Torbjørn