Activity
From 10/02/2013 to 10/31/2013
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 ... - 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...
- 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...
- 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...
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...
- 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:/...
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... - 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 ...
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 ...
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... - 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... - 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...
10/17/2013
- 04:07 PM Software Development: RE: File transfer methods
- Mary what do you get from the ftp server?
- 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... - We have an application where a 14 bit ADC is wired to the UPP port via the FPGA. The application needs to perform tri...
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...
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.
- 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...
- 02:28 PM Software Development: RE: File transfer methods
- TFTP is not very efficient depending on how it is configured.
- 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... - 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... - 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...
- 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...
- 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... - 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. ... - 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 - 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 - 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... - What is the most efficient file transfer method that this distro supports? We expect to generate very large files (u...
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... - 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... - I am using an IndustrialIO Rev 2B board with a Mity-DSP-L138FI-236-RL SOM in which uboot reports:
Resetting ethern...
10/10/2013
- My company is using your MityDSP-L138F SoM in a research prototype. The design has a high speed LVDS bus to the Spart...
- 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... - 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...
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... - Is there a diagram for the EMIFA write timing like the one in the wiki for read timing? I am having some problems im...
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... - 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 ...
- 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...
- 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...
- 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...
- 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...
- 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... - 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... - 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...
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...
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...
10/05/2013
- According to the information in this link:
http://e2e.ti.com/support/embedded/linux/f/354/t/47756.aspx
the linu...
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