Hi Parekkadan, On Thu, Jul 29, 2021 at 02:57:16PM +0530, Parekkadam Sunny wrote: > Hi, > > Antipating a quick support from your side. We are struggling a lot and it is a > critical aspect for our project. Please note that we are offering community support in our spare time, which is unfortunately a limited resource. > With Regards, > Shine Parekkadan Sunny > Scientist 'B' > CAIR,DRDO > CV Raman Nagar > Bangalore-560093 > Email:shinepsunny@xxxxxxxxxxxx > Ph:080 25342646;Extn:4161 > > > > -- Original Message -- > > From: [shinepsunny@xxxxxxxxxxxx] > To: [linux-media@xxxxxxxxxxxxxxx], [laurent.pinchart@xxxxxxxxxxxxxxxx] > Date: Wed 28 July 2021 [9:34:19 AM] > Subject: FT602 UVC error > > > > Hi Team, > > Extremely sorry for the initial wrong mail. > > We are planned to use FT602 device(claiming to be uvc compliant but bulk > device) in our project for collecting camera sensors data and passing it to > Linux host via USB 3.0 with help of UVC driver(v4l2) in Linux. > > For getting started with the device, we are using UMFT602A module(evaluation > kit) with cyclone V soc EVM using FT602_UVC_Bus_Master_Sample (AN_434) example > code, which was available in FT602 product page. Host side we are using Ubuntu > 20.04 with latest kernel version 5.13.0-051300-generic. > > When we enable auxiliary interface in FT602 configuration programmer, we are > unable to receive any data in ubuntu, when We disable auxiliary interface, we > are able to receive frames in Wireshark and also in UVC debug trace, with frame > overflow error then we have tried allocating constant bandwidth using > modprobe uvcvideo quirks=640 using these settings we could eliminate frame > overflow error, but VLC media player failed to display color bar and also > unable to get any data from V4l2 frame capture API for 1920 x 1080 60fps yuv2, > for testing we have reduced video resolution and fps but it didn't help in > solving the problem. > > There was no problem seen in playing color bar video using VLC media player in > windows. In final application we need to use V4l2 capture API for collecting > frame data please help us in solving the issue. > > I am attaching Wireshark capture file and Linux dmesg log with this mail. > Use any test editor for opening usblog1.log followed by usblog2.log... > ft602usbdebug.zip contains Wireshark capture. > > Thanks > Shine > [drdologo_f] > > The contents of this Email communication are confidential to the addressee. If you > are not the intended recipient you may not disclose or distribute this communication > in any form should immediately contact the sender. The information, images, documents > and views expressed in this Email are personal to the Sender and do not expressly or > implicitly represent official positions of DRDO and no authority exists on behalf of > DRDO to make any agreements, or other binding commitment by means of Email. -- Regards, Laurent Pinchart
