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From 08/22/2013 to 09/20/2013

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

09/09/2013

07:28 AM Software Development: RE: Linux blocks DSP-core access to EMIFA
2.6.34 Dmitry Gorulko
07:12 AM Software Development: RE: Linux blocks DSP-core access to EMIFA
What version of the kernel are you using? Michael Williamson
05:50 AM Software Development: RE: Linux blocks DSP-core access to EMIFA
Ok, I see the reason - kernel booting resets EMIFA setups. Is there any way to prevent it than? Dmitry Gorulko
04:47 AM Software Development: Linux blocks DSP-core access to EMIFA
Hello!
DSP-core reads memory mapped FPGA register by EMIFA. When ARM-core runs UBOOT everything works fine. When L...
Dmitry Gorulko

09/06/2013

07:32 PM Software Development: RE: SIGNAL issues with DSPLink
I was able to make the alarm work by modifying CFG_linux.c and rebuilding DSPLink. I tried two methods:
1. turn off...
Steven Hill
06:37 PM Software Development: SIGNAL issues with DSPLink
I am trying to use the alarm() function in an application much like DSPHelloWorld. But if you add an alarm the applic... Steven Hill
12:18 PM Software Development: RE: Debugging in CCSv5 using GDB
'which python' returns the version that is in /usr/local/oecore-i686...
But if I run 'arm-angstrom-linux-gnueabi-g...
Steven Hill
11:29 AM Software Development: RE: Debugging in CCSv5 using GDB
Steven,
That looks good, I accidentally included "python" in the directory name. You have confirmed the python ex...
Bob Duke
10:01 AM Software Development: RE: Shutdown misbehaving
Helmut,
As long as your application doesn't need to do any cleanup (saving files), the kill -9 should be ok.
...
Jonathan Cormier
10:00 AM Software Development: RE: Shutdown misbehaving
My guess is that the DSPLINK driver library is catching the signals and shutting itself down (a default behavior to s... Michael Williamson
09:57 AM Software Development: RE: Shutdown misbehaving
Probably RESOLVED.
There was another bug I thought unrelated, where I was calling system("poweroff.sh") multiple t...
Helmut Forren
09:24 AM Software Development: Shutdown misbehaving
Under Angstom linux on a mityomap L138F, I've created /etc/rc0.d/S99poweroffAPP.sh, a symbolic link of /etc/init.d/po... Helmut Forren

09/05/2013

07:59 PM Software Development: RE: Debugging in CCSv5 using GDB
I don't have a python directory in the /usr/local/oecore-i686/sysroots/i686-angstromsdk-linux/usr/bin directory, but ... Steven Hill
06:12 PM Software Development: RE: Debugging in CCSv5 using GDB
Steven,
It looks like it's trying to use the distribution's python (which likely doesn't have the pydebug package)...
Bob Duke
05:26 PM Software Development: RE: Debugging in CCSv5 using GDB
I followed the steps in the 'VM Build Steps" part of the Linux Build Virtual Machine tutorial - except that I install... Steven Hill
05:18 PM Software Development: RE: Debugging in CCSv5 using GDB
I am running with a Ubuntu Linux distribution - 12.04LTS in VirtualBox Manager.
More information - 'gdb' run from ...
Steven Hill
04:57 PM Software Development: RE: Debugging in CCSv5 using GDB
Hello Steven,
Are you running CCSv5 from a Critical Link Virtual Machine image or from your own Linux distributio...
Bob Duke
03:33 PM Software Development: RE: Debugging in CCSv5 using GDB
More information - I discovered that I was using the default gdb, so changed that to the 'usr/local/oecore-i686/sysro... Steven Hill
02:52 PM Software Development: Debugging in CCSv5 using GDB

I am using CCSv5 to create projects using the Critical Link toolchain. This is working fine - DSPHelloWorld etc ru...
Steven Hill

09/04/2013

02:27 PM Software Development: RE: Graceful shutdown at what level?
I'm not aware of any specific process monitoring programs that we use. I know that system-D has the ability to do it... Jonathan Cormier
12:10 PM Software Development: RE: Graceful shutdown at what level?
CORRECTION: Notes should do symbolic link copy: file /etc/rc0.d/S99hgfshutdown created via "cd /etc/rc0.d" and "cp -s... Helmut Forren
12:01 PM Software Development: RE: Graceful shutdown at what level?
Jonathan,
In fact I just got that half working a moment before seeing your post, and completely working now. I pu...
Helmut Forren
10:47 AM Software Development: RE: Graceful shutdown at what level?
Helmut,
You could try adding the KILL voltage script to /etc/rc0.d. If you look there you can see that the filesy...
Jonathan Cormier
10:35 AM Software Development: RE: Graceful shutdown at what level?
Michael & Tim:
I sincerely appreciate your advice and want to follow through as best that I can. While I am ultim...
Helmut Forren

09/03/2013

06:14 PM Software Development: RE: Graceful shutdown at what level?
Helmut
I would think you could use the linux power management features to do this. Much like you can push a button o...
Tim Iskander
06:03 PM Software Development: RE: Graceful shutdown at what level?
Well,
Some questions come to mind as you have a couple of isses.
- Is your application writing anything to th...
Michael Williamson
04:53 PM Software Development: Graceful shutdown at what level?
I've inherited someone else's hardware design, based on the Critical Link OMAP-L138F SoM, and I must finish up the so... Helmut Forren
02:04 PM Software Development: RE: Programming fpga from inside ARM application
Thanks, Mike. I am running linux, and the system() call was just what I was looking for. Steven Hill

09/02/2013

08:36 AM Software Development: RE: Programming fpga from inside ARM application
Is the ARM an linux application or a bare metal application?
If it is a linux application, you will need to write ...
Michael Williamson

08/30/2013

12:48 PM Software Development: Programming fpga from inside ARM application
We have examples of how to program the FPGA from uboot or from the linux command prompt. I have used both methods s... Steven Hill
11:15 AM Software Development: RE: OMAPL138 DSP-EDMA3 transfer from EMIFA when Linux is running on ARM
Another update...
Now Ti reports that I have to say the linuxkernel to reserve the DMA-channels what I using on th...
Christian Rückl
08:20 AM Software Development: RE: OMAPL138 DSP-EDMA3 transfer from EMIFA when Linux is running on ARM
I got an response from TI. this behavior has probably something to do with the used IRQ channel on ARM side. ARM uses... Christian Rückl

08/29/2013

08:31 PM Software Development: RE: tcDspFirmware::print_version_info() writes past end of buffer
Hi John,
Thanks for the information, we'll patch this up for the next release. I'm very sorry for the bug (and c...
Michael Williamson
05:22 PM Software Development: tcDspFirmware::print_version_info() writes past end of buffer
print_version_info() can write more bytes than the 'anMaxLen' argument. The workaround is to pass it a large enough ... John Cumming
07:38 AM Software Development: RE: OMAPL138 DSP-EDMA3 transfer from EMIFA when Linux is running on ARM
Thanks Mike for your quick answer!
I don't think so that it has something with my used timer(Timer64P3) to do. I p...
Christian Rückl
07:14 AM Software Development: RE: OMAPL138 DSP-EDMA3 transfer from EMIFA when Linux is running on ARM
I suspect that linux may be using the same EDMA resources or interrupts.
I think that the linux ARM-9 port may use...
Michael Williamson
07:09 AM Software Development: OMAPL138 DSP-EDMA3 transfer from EMIFA when Linux is running on ARM
Hi,
I'm not sure if this forum is the right place to post this question but i will do it an hopefully anybody can ...
Christian Rückl

08/28/2013

05:37 AM PCB Development: RE: The schematic of MityDSP-L138 Development Kit
Hi,tom
please e-mail me the link to download the design files for the MityDSP-L138F schematic,thx!
华 罗

08/26/2013

02:08 PM Software Development: RE: EMIFA Clock not present
The clock started working after some FPGA machinations.
New problem:

We can read registers from the FPGA but ...
Mary Frantz

08/24/2013

10:11 AM Software Development: RE: DSP EDMA IRAM DATA TRANSFER
Solved !
The problem was in the declaration of arrays to which I have copied the content of pointers. If you general...
Rafał Krawczyk

08/23/2013

06:40 PM Software Development: stepper interrupts
The tcDspFpgaStepper class has a SetInterruptEnable() method that wasn't in MDK 2.11.
If you create your instance of...
John Cumming
07:33 AM Software Development: RE: handover I2C bus control from ARM to DSP
The I2C0 bus (I believe), according to the datasheet, controls both the factory configuration data as well as a Power... Michael Williamson
 

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