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From 09/10/2013 to 10/09/2013

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

09/30/2013

12:36 PM Software Development: RE: DSP GPIO interrupts (No-FPGA)
Hello Steven,
1. It is highly recommended to set the pins up in a matter you want to use them. The processor may b...
Rafał Krawczyk
07:09 AM Software Development: RE: watchdog causes strange side effects
Ah, OK.
There is a "post on TI's E2E site":http://e2e.ti.com/support/embedded/bios/f/355/t/74121.aspx that talks...
Michael Williamson
06:44 AM Software Development: RE: watchdog causes strange side effects
Got some more insight. When I start kicking the watchdog, the dspbios function TSK_sleep() fails (sleeps forever). It... stephan berner

09/29/2013

04:24 PM Software Development: RE: watchdog causes strange side effects
Thanks for the fast reply !
Model #:L138-FI-381RL-3B
/proc/config.gz attached
Further debugging revealed that ...
stephan berner
07:53 AM Software Development: RE: watchdog causes strange side effects
Is it possible the watchdog is firing before you kick it? How much margin do you have between the kick and the confi... Michael Williamson
07:51 AM Software Development: RE: watchdog causes strange side effects
None come to mind right away....
What model number SOM are you using?
What version of the kernel are you using,...
Michael Williamson
03:01 PM Software Development: RE: Audioexample with DSP-ARM-Communication
Hej Mike,
if your support is for DSPBios and DSPLink and there is no much overhead, then I will stick to that.
...
Benedikt K.
09:09 AM Software Development: RE: Audioexample with DSP-ARM-Communication
DSPBIOS (or SYSBIOS) does not introduce much overhead, it should be fine for you application. If you need to, you co... Michael Williamson

09/28/2013

05:05 PM Software Development: watchdog causes strange side effects
Hi,
I am having a lot of problems with the watchdog.
1) After kicking it for several minutes, a kernel panic o...
stephan berner

09/27/2013

01:36 PM Software Development: RE: Debugging in CCSv5 using GDB
I followed option 2, and now have GDB working. I did a lot of searching on the net, and it seems that the issue with... Steven Hill

09/26/2013

11:59 AM Software Development: RE: SATA Interface R/W Performance
Check this page from TI.
http://processors.wiki.ti.com/index.php/DaVinci_PSP_03.21.00.04_Device_Driver_Features_an...
Michael Williamson
11:30 AM Software Development: SATA Interface R/W Performance
Hi There,
Do you have any read/write performance figures for the SATA interface on the MityDSP/Industrial I/O
boa...
Craig Little

09/25/2013

04:41 PM Software Development: RE: GPIO in linux
I looked at that file, and the array includes all the Bank 0 pins, so they all should be acting as GPIO - but accordi... Steven Hill
03:44 PM Software Development: RE: GPIO in linux
You will need to edit the baseboard file you are using and rebuild the linux kernel. For instance, the industrial IO ... Dominic Giambo
03:09 PM Software Development: RE: GPIO in linux
How do you set pinmux values in linux? Steven Hill
02:41 PM Software Development: RE: GPIO in linux
Make sure that the pinmux is set correctly so that GPIO0 functions as a GPIO.
\Greg
Gregory Gluszek
02:34 PM Software Development: GPIO in linux
I want to use GPIO pins in my application. Doing the following:... Steven Hill

09/20/2013

11:32 AM Software Development: Audioexample with DSP-ARM-Communication
Hej,
I'm new to the TI OMAP and previously worked with AD Sharc-Processors.
For a new product I switched to the...
Benedikt K.

09/19/2013

05:33 PM Software Development: RE: DSP DMA crashes Linux
Hi Lars,
This is interesting... I did not think that the linux code was using the Quick DMA PaRAMS. I know you ha...
Michael Williamson
05:09 PM Software Development: RE: DSP DMA crashes Linux
Dave,
I think I found the problem.
When comparing the board definition file for the da850 evm (board-da850-evm.c) ...
Lars Majlof
04:17 PM Software Development: RE: DSP DMA crashes Linux
I will have to give that some thought. It was my understanding that the two processor each had use of a different pa... David Rice
02:54 PM Software Development: RE: DSP DMA crashes Linux
Hi Dave,
I have done a full matrix of experiments, interrupt 7 or 8, with and without MMC in the kernel, and booting...
Lars Majlof
03:54 PM Software Development: RE: SYS/BIOS and SYSLINK
It seems to me that TI is moving to SYS/BIOS and DSP/BIOS will soon be deprecated. Most of the really useful trainin... Steven Hill

09/18/2013

09:20 PM Software Development: RE: SYS/BIOS and SYSLINK
Don't have any immediate plans to update, though they should compile against SYS/BIOS without much modification.
W...
Michael Williamson
05:48 PM Software Development: RE: DSP DMA crashes Linux
Dave,
I have confirmed that if I run Linux off the built in flash disk (and disable MMC support) I can do DMA transf...
Lars Majlof
05:46 PM Software Development: RE: DSP DMA crashes Linux
Hi Lars,
I am currently working on a project that uses the QDMA class to move data between the FPGA and memory, an...
David Rice
02:19 PM Software Development: RE: DSP DMA crashes Linux
Thanks Dave,
That was a lot of useful information!
I did indeed pull in some off the mark libraries during link tim...
Lars Majlof
01:08 PM Software Development: RE: DSP DMA crashes Linux
I assume you are not actually using any .c files from the EDMA code? If so, get rid of those. All you need from the... David Rice
12:37 PM Software Development: RE: DSP DMA crashes Linux
Hi Dave,
Thanks for the reply.
I tried that - still the same problem.
My sense is that this has something to d...
Lars Majlof
11:26 AM Software Development: RE: DSP DMA crashes Linux
Hi Lars,
The tcDspQDMA class handles all of the setup for the dma, so you don't need the HWI_eventMap() call. Tha...
David Rice

09/17/2013

12:35 PM FPGA Development: RE: BUSY and AWAKE LEDs
D2 (AWAKE) is connected to pin P15 of the FPGA. Drive high to light.
D3 (BUSY) is connected to pin P16 of the FPGA....
Michael Williamson
12:21 PM FPGA Development: BUSY and AWAKE LEDs
On my L138-DI-225-RI board, I observe two LEDs labeled "BUSY" and "AWAKE". These are located next to the "DONE" LED ... Stewart Cobb
11:57 AM Software Development: DSP DMA crashes Linux
Hi,
I ran into a basic problem testing out DMA transfers on the DSP to see if the speed improvement is worth the eff...
Lars Majlof

09/16/2013

01:01 PM Software Development: SYS/BIOS and SYSLINK
Are there plans to update the libraries and examples (e.g. DSPHelloWorld) to SYS/BIOS and SYSLINK? TI seems to be in... Steven Hill
12:45 PM Software Development: RE: Debugging in CCSv5 using GDB
Thanks for your reply - I have put this issue on the back burner as I am now working on DSP side software for a while... Steven Hill
04:50 AM Software Development: RE: DSP EDMA Semaphore problem
Sorry about the problem. The cause of this was the incorrect memory access of mine. I basically tried to simultaneous... Rafał Krawczyk

09/15/2013

09:39 PM Software Development: RE: DSP GPIO interrupts (No-FPGA)
I have some follow-on questions for this thread, because this is something I am working on right now (DSP/BIOS non-FP... Steven Hill

09/12/2013

08:45 AM Software Development: DSP EDMA Semaphore problem
Hello,
I have succesfully transferred the blocks of data using the BlockTransfer Method from DspQDMA.cpp (see thread...
Rafał Krawczyk

09/11/2013

07:25 PM Software Development: RE: Debugging in CCSv5 using GDB
Steve,
I have been unable to reproduce the issue and the obvious parts of your python environment seem to be confi...
Bob Duke
05:58 PM Software Development: RE: Debugging in CCSv5 using GDB
I would appreciate some help with this - I have no idea how to solve this problem. Without GDB working I have no way... Steven Hill

09/10/2013

10:25 PM Software Development: RE: Linux blocks DSP-core access to EMIFA
Hello!
I have found a root of the problem - EMIFA goes to Disable state during kernel booting. Previously I have b...
Dmitry Gorulko
09:57 AM Software Development: RE: Linux blocks DSP-core access to EMIFA
Mike, yes, I do like that and observe both - memory window and regs tab in CCS and my test program does an output via... Dmitry Gorulko
09:02 AM Software Development: RE: Linux blocks DSP-core access to EMIFA
Hmmm.
The MIDR is read only, it cannot be changed by any software. I haven't seen behavior like this before.
A...
Michael Williamson
07:59 AM Software Development: RE: Linux blocks DSP-core access to EMIFA
Michael, I have simplified the setup: as I wrote, now DSP-core reads just several registers and EMIFA_MIDR_REG which ... Dmitry Gorulko
07:41 AM Software Development: RE: Linux blocks DSP-core access to EMIFA
u-Boot is the only software (as opposed to the kernel) that should be modifying the EMIFA registers if you are using ... Michael Williamson
06:52 AM Software Development: RE: Linux blocks DSP-core access to EMIFA
Could it be related to caching? Dmitry Gorulko
06:13 AM Software Development: RE: Linux blocks DSP-core access to EMIFA
I wrote that kernel resets EMIFA setups - I mean CCS debug starts to show 0's for EMIFA registers and for other perip... Dmitry Gorulko
03:55 AM Software Development: RE: Linux blocks DSP-core access to EMIFA
Does anybody use DSP-EMIFA-FPGA communication with DSP using no OS? Dmitry Gorulko
 

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