Project

General

Profile

David Rice

Issues

Projects

Activity

07/21/2014

11:46 AM ARM9 Based Platforms Software Development: RE: uPP receiving problem
I'm not a VHDL guy, so I can't say whether this will work as you have it. It sounds like you and your VHDL guy shoul...
11:09 AM ARM9 Based Platforms Software Development: RE: uPP receiving problem
Each time you call receive, a DMA is set up to fill the buffer you pass. Once that DMA completes, no data will be tr...
10:05 AM ARM9 Based Platforms Software Development: RE: uPP receiving problem
I don't see any reason that it wouldn't work, but I have seen issues with some interrupt levels not working. I stron...
09:49 AM ARM9 Based Platforms Software Development: RE: uPP receiving problem
A couple of things that I see are different from some code that I have working here:
I use nHWInterruptLevel = 7. ...

07/03/2014

08:29 AM ARM9 Based Platforms Software Development: RE: uPP delay between transmissions
My first thought on seeing this is that it is probably a cache issue. After you set the values in the buffer, the va...

05/09/2014

10:24 AM ARM9 Based Platforms Software Development: RE: DSP DMA crashes Linux
I have recently been working on a project where we ran into conflicts between QDMA's on the DSP side and MMC use on t...

02/24/2014

07:38 AM ARM9 Based Platforms Software Development: RE: DSP- EDMA Transmission problem
Excellent! Glad it is now working!
Dave

01/30/2014

09:31 AM MitySOM-5CSX Altera Cyclone V FPGA Development: RE: Ethernet
Greg,
Only 2 "e"s in setenv, not three... Jack probably knows that, but just to be clear...
Dave

12/20/2013

11:46 AM ARM9 Based Platforms Software Development: RE: DSP- EDMA Transmission problem
I'm not sure why you are dividing by 4 for the number of words to transfer (numwords>>2), but I think that is your pr...

10/25/2013

08:46 AM ARM9 Based Platforms Software Development: RE: Can't get DMA using low level driver working on DSP
If you have cache enabled for the DDR, I don't think it should be much faster to use IRAM. Your DMA in this case wil...

Also available in: Atom

Add picture from clipboard (Maximum size: 500 MB)