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From 10/05/2013 to 11/03/2013

10/25/2013

06:15 PM Software Development: RE: Can't get DMA using low level driver working on DSP
Thanks for the replies. I'm using the 0x66000000 (CS5) space.
However, I was wrong about the interpretation of the ...
Steven Hill
08:46 AM 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... David Rice
07:45 AM Software Development: RE: Can't get DMA using low level driver working on DSP
The crossbar to the EMIF is not great. Which CS space are you using for your transfer? The number of wait states ch... Michael Williamson
08:10 AM FPGA Development: RE: uPP receive issues
Do you know which two byes you are missing? Are they consistently the same two bytes?
Do you have a chipscope lic...
Michael Williamson

10/24/2013

08:10 PM Software Development: RE: Can't get DMA using low level driver working on DSP
I hope somebody is still monitoring this thread - I have DMA working now using buffers on the FPGA, but the transfers... Steven Hill
10:54 AM Software Development: RE: SYS/BIOS and SYSLINK
Hi Mike:
Here is another example of why I think the move to SYS/BIOS is necessary - check out this post:
http:/...
Steven Hill

10/23/2013

08:25 AM FPGA Development: RE: uPP receive issues
I have updated my source code
This is my *.ucf file
NET "o_upp_2xtxclk" LOC = "F4" | IOSTANDARD = LVCMOS18;
NET...
minh tung
08:03 AM FPGA Development: uPP receive issues
Hi,
I am using Upp to transfer data between FPGA and OMAP.
The data send from FPGA to OMAP is OK. But FPGA can not ...
minh tung

10/19/2013

10:38 AM Software Development: RE: UPP acquisition issue
hi Greg,
Thanks a million for all the help, solved the issue finally. I did set the dma thread priority to 15 but ...
Preejith S P

10/18/2013

02:09 PM Software Development: RE: UPP acquisition issue
Hi Preejith,
First, in relation to the thread priority, 15 is the maximum priority for a task and 1 is the lowest...
Gregory Gluszek
10:12 AM Software Development: RE: UPP acquisition issue
hi Greg,
We tried both your suggestions but without success. First about the DMA thread priority, we tried setting...
Preejith S P
08:18 AM Software Development: RE: File transfer methods
I did not try a ftp transfer. We have decided to do the transfer within our application, by connecting to a socket a... Mary Frantz

10/17/2013

04:07 PM Software Development: RE: File transfer methods
Mary what do you get from the ftp server? Jonathan Cormier
02:07 PM Software Development: RE: UPP acquisition issue
Hi Preejith,
In the code you attached the Channel A and Channel B DMA thread priorities are set to 9. These can b...
Gregory Gluszek
11:03 AM Software Development: UPP acquisition issue
We have an application where a 14 bit ADC is wired to the UPP port via the FPGA. The application needs to perform tri... Preejith S P

10/16/2013

09:48 AM Software Development: RE: File transfer methods
I tried some tests as you suggested.
file size = 64 Mbytes
scp: 60 sec (using WinSCP)
sftp: 53 sec (using W...
Mary Frantz

10/14/2013

02:51 PM Software Development: RE: File transfer methods
Note that all of my experiments have been on a mitydsp copying from nand and not sata. Jonathan Cormier
02:49 PM Software Development: RE: File transfer methods
I built the latest busybox using instructions provided and ran the ftpd service as described below and got a transfer... Jonathan Cormier
02:28 PM Software Development: RE: File transfer methods
TFTP is not very efficient depending on how it is configured. Michael Williamson
02:27 PM Software Development: RE: File transfer methods
It might be easier to export the mitydsp filesystem via NFS or SAMBA and have windows access it directly.
Or hav...
Michael Williamson
02:23 PM Software Development: RE: File transfer methods
I was able to transfer a 6MB file in about 13 seconds which is about 472 kB/s.
And the same transfer done over scp...
Jonathan Cormier
02:14 PM Software Development: RE: File transfer methods
I switched to using the http://tftpd32.jounin.net/ program as the tftp server as I was unable to get the other one to... Jonathan Cormier
02:06 PM Software Development: RE: File transfer methods
My guess is that windows firewall is blocking the connection. You should be able to google how to allow an inbound c... Jonathan Cormier
01:58 PM Software Development: RE: File transfer methods
Trying the Solar Winds tftp server. Installed it, ran it.
On my target:
root@mityomap:/mnt/sata# tftp -p -l te...
Mary Frantz
01:53 PM Software Development: RE: File transfer methods
Mary,
The angstrom distribution we use for our baseline does not include a TFTP server in its package repository. ...
Bob Duke
01:25 PM Software Development: RE: File transfer methods
It is possible. But i would test the other direction first to see if you get the speeds your looking for.
-Jonathan
Jonathan Cormier
01:24 PM Software Development: RE: File transfer methods
The Windows PC would be requesting the file. So, I think we want the som to be the server. Is this possible?
Mary
Mary Frantz
01:16 PM Software Development: RE: File transfer methods
Mary,
There should be a tftp dameon package available for this platform.
Which device will be triggering this...
Jonathan Cormier
12:31 PM Software Development: File transfer methods
What is the most efficient file transfer method that this distro supports? We expect to generate very large files (u... Mary Frantz

10/11/2013

11:30 AM PCB Development: RE: MityDSP-L138F LVDS lengths? .... (posted on behalf of a customer)
Hi Angela,
The following traces' length are reported from our tool.
Let us know if you need anything else. Than...
Zeng Liu
07:45 AM Software Development: RE: IndustrialIO board with Mity-DSP-L138F, No ETH PHY detected
One thing that sticks out..
you flashed the kernel to 0x100000 instead of 0x10000 (which is where you erased).
wh...
Tim Iskander
07:38 AM Software Development: IndustrialIO board with Mity-DSP-L138F, No ETH PHY detected
I am using an IndustrialIO Rev 2B board with a Mity-DSP-L138FI-236-RL SOM in which uboot reports:
Resetting ethern...
edward lambert

10/10/2013

11:10 AM PCB Development: MityDSP-L138F LVDS lengths? .... (posted on behalf of a customer)
My company is using your MityDSP-L138F SoM in a research prototype. The design has a high speed LVDS bus to the Spart... Angela Newman
07:38 AM Software Development: RE: EMIFA write timing
Hi Steven,
Using a separate chip select (and adjusting the wait timings setup in u-Boot) should make this feasible...
Michael Williamson
12:52 AM Software Development: RE: EMIFA write timing
To read the THS1206 I need two chip selects, which can be the core cs and an address bit. Then I need a read pulse w... Steven Hill

10/09/2013

01:36 PM Software Development: RE: EMIFA write timing
Do you mean for the EMIFA from the OMAP-L138 or the signals from the EMIFA_iface.vhd module that CL provides?
I do...
Michael Williamson
12:58 PM Software Development: EMIFA write timing
Is there a diagram for the EMIFA write timing like the one in the wiki for read timing? I am having some problems im... Steven Hill

10/08/2013

06:04 PM Software Development: RE: UPP "start" signal ignored in receive mode?
FYI, for anyone reading this in the future:
The root of the problem was that the FPGA was sending longer or shorte...
Stewart Cobb
04:12 PM Software Development: RE: Can't get DMA using low level driver working on DSP
You bring up a very good point. If you are only moving 16 words every 4us, the overhead to setup the DMA may be too ... David Rice
04:09 PM Software Development: RE: Can't get DMA using low level driver working on DSP
By the way, David and Mike, thanks for the information on the cache functions. When I insert them into my example, I... Steven Hill
03:52 PM Software Development: RE: Can't get DMA using low level driver working on DSP
Thanks, David for all that information - as you can tell I am not very experienced in DSP programming. I hope you wo... Steven Hill
03:19 PM Software Development: RE: Can't get DMA using low level driver working on DSP
The QDMA can be used for just about anything the EDMA can be used for, in terms of transfers, but it can't be trigger... David Rice
01:30 PM Software Development: RE: Can't get DMA using low level driver working on DSP
First to David Rice: This test was just meant to get me started - ultimately I want to transfer 16 bit words from ext... Steven Hill
01:20 PM Software Development: RE: Can't get DMA using low level driver working on DSP
Hello Steven,
Is it possible that you need to invalidate your cache prior to validating the transfer has completed...
Michael Williamson
01:01 PM Software Development: RE: Can't get DMA using low level driver working on DSP
Hi Steven,
I looked briefly at your code and nothing jumped out at me...
I am the one who developed Critical Li...
David Rice
12:30 PM Software Development: Can't get DMA using low level driver working on DSP
I desperately need some help here. I have been trying for 3 days to get DMA working on the DSP. I have attached a C... Steven Hill

10/07/2013

08:00 PM Software Development: RE: GPIO sharing between ARM and DSP
Hi Steven,
We don't have any partitioning schemes in place, as it is very application specific. In fact, we don't...
Michael Williamson

10/06/2013

01:28 PM Software Development: RE: DSP DMA crashes Linux
I too am having a lot of trouble implementing EDMA on the DSP using LLD. But I don't understand Lars' last post. As... Steven Hill

10/05/2013

02:28 PM Software Development: GPIO sharing between ARM and DSP
According to the information in this link:
http://e2e.ti.com/support/embedded/linux/f/354/t/47756.aspx
the linu...
Steven Hill
 

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