Re: reading data at 500Hz

2015-12-07 Thread Peter Stuge
Jose Colmenares wrote: > 128000 bytes per second for a 1000Hz frequency (which the device > can give). 128000 bytes per second is a lot less than the 480 Mbps > that USB 2 gives. That's what's killing me. I don't think you have written that you have a particular latency requirement, but Greg seems

Re: reading data at 500Hz

2015-12-07 Thread Greg KH
On Mon, Dec 07, 2015 at 01:50:37PM +, Jose Colmenares wrote: > Hi, > > Well the amount of data is very small, about 16 floats plus a header in the > message. Lets round it up to 128 bytes. That means 128000 bytes per second > for a 1000Hz frequency (which the device can give). 128000 bytes p

RE: reading data at 500Hz

2015-12-07 Thread Jose Colmenares
Robotics. Italian Institute of Technology. +39 010 717 818 18 From: Greg KH [g...@kroah.com] Sent: Sunday, December 06, 2015 6:39 AM To: Jose Colmenares Cc: USB list Subject: Re: reading data at 500Hz On Fri, Dec 04, 2015 at 12:46:14PM +, Jose Colmenares wr

Re: reading data at 500Hz

2015-12-05 Thread Greg KH
On Fri, Dec 04, 2015 at 12:46:14PM +, Jose Colmenares wrote: > Hi, > > I'm using a USB Inertial Measurement Unit that theoretically produces > data at 500Hz. According to the timestamps on the data, indeed the > data is being produced at 500Hz. But I'm getting it in burst, with an > "efective"