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From 06/12/2016 to 07/11/2016

07/11/2016

05:06 PM Software Development: RE: L138 dsplink problem - schedule while atomic bug
I looked deeper into the error we were provoking on our bench; it turned out to be a c++ vector de-referencing error ... Fred Weiser

07/09/2016

06:24 PM Software Development: RE: SPI1 controller, access to FLASH and carrier board. NOT linux based.
Ian St. John wrote:
> Can you confirm that the signal marked as 'reserved' just beside the SPI1_CSC1 is the SPI1_CSC...
Jonathan Cormier
05:56 PM Software Development: RE: SPI1 controller, access to FLASH and carrier board. NOT linux based.
Hmm. I asked the EE about the diagram and he was interested in the fact that there was a pull up on the CS line. Appa... Ian St. John
12:40 AM Software Development: RE: SPI1 controller, access to FLASH and carrier board. NOT linux based.
The eeprom is on the i2c0 bus. I'm assuming you are talking about the SPI Nor flash which is on SPI1_CS0.+
Oops...
Ian St. John
01:23 PM Software Development: RE: L138 dsplink problem - schedule while atomic bug
Hi Fred,
Syslink is newer than DSPlink, though in the context of the L138 it's very similar code (syslink evolved ...
Michael Williamson
12:11 PM Software Development: RE: L138 dsplink problem - schedule while atomic bug
The error collected above was on the bench after making some minor software changes seemingly unrelated with the code... Fred Weiser
11:23 AM Software Development: RE: L138 dsplink problem - schedule while atomic bug
I found the following on the TI site; looks like they struggled with this issue with sys-link... I'm not sure how sys... Fred Weiser

07/08/2016

11:55 AM Software Development: L138 dsplink problem - schedule while atomic bug
I think there may be a bug in the dsplink kernel code that causes the scheduler to run after a call to spinlock. "rem... Fred Weiser
09:33 AM Software Development: RE: SPI1 controller, access to FLASH and carrier board. NOT linux based.
Ian St. John wrote:
> I am building and programming a custom board without Linux. Basic embedded drivers running fro...
Jonathan Cormier

07/05/2016

10:18 AM Software Development: SPI1 controller, access to FLASH and carrier board. NOT linux based.
I am building and programming a custom board without Linux. Basic embedded drivers running from SPI1,CS0 (8MB NOR Fla... Ian St. John

06/22/2016

04:13 AM Software Development: RE: kernel 3.2 - tcpip stack latency
Hi Greg,
Than you for your feedback.
Indeed, flag CONFIG_PREEMPT is set in kernel config. As far as we can see...
Patrice Bastiaens

06/21/2016

01:30 PM Software Development: RE: kernel 3.2 - tcpip stack latency
Hi Patrice,
Since you are using SCHED_RR I am assuming you are using CONFIG_PREEMPT in your kernel config, correc...
Gregory Gluszek
06:26 AM Software Development: kernel 3.2 - tcpip stack latency
Hello,
We've built an application receiving messages from two devices at a rate of 1 message of 1440 bytes every 1...
Patrice Bastiaens

06/17/2016

08:25 AM Software Development: RE: Flashing a new kernel to NOR from Linux rather than u-boot
Here are the results from my board/MDK:... Fred Weiser

06/16/2016

05:43 PM Software Development: RE: Flashing a new kernel to NOR from Linux rather than u-boot
Alternatively it may be possible for you to build the kernel features as modules and insert them in the live system. ... Jonathan Cormier
05:39 PM Software Development: RE: Flashing a new kernel to NOR from Linux rather than u-boot
Fred,
Do you have /dev/mtdblock* devices? My kernel boot args have this "root=/dev/mtdblock0", so my assumption i...
Jonathan Cormier
05:26 PM Software Development: Flashing a new kernel to NOR from Linux rather than u-boot
We use opkg to push updates to our products that are installed in the field. We now need a way to update the kernel, ... Fred Weiser

06/15/2016

05:14 PM Software Development: RE: How to configure the GPIOs as outputs?
Do note that the custom baseboard instructions were written for the 335x family. So some things will be slightly diff... Jonathan Cormier
04:14 PM Software Development: RE: How to configure the GPIOs as outputs?
Héctor,
Please check the last section of this page for information on how to review and set the pinmux for the dev...
Bob Duke
03:11 PM Software Development: How to configure the GPIOs as outputs?
Hi, it's me again,
I'm knowing the Profibus Development Kit (and embedded systems) and for that I'm trying to do s...
Hector Bojorquez
11:00 AM Software Development: RE: Problems with the first time configuration
Now it's working, thanks a lot Jonathan! Hector Bojorquez
10:02 AM Software Development: RE: Problems with the first time configuration
Hector Bojorquez wrote:
> > This is a error is normal and doesn't hurt anything.
> *
> So, the reflashing process ...
Jonathan Cormier
09:55 AM Software Development: RE: Problems with the first time configuration
> This is a error is normal and doesn't hurt anything.
*
So, the reflashing process went well?*
> If you don't h...
Hector Bojorquez
08:38 AM Software Development: RE: Problems with the first time configuration
Hector Bojorquez wrote:
> >There shouldn't be a space in the console arg. "console=ttyS1,115200n8"
> >Also root sh...
Jonathan Cormier

06/14/2016

05:45 PM Software Development: RE: Problems with the first time configuration
>There shouldn't be a space in the console arg. "console=ttyS1,115200n8"
>Also root should have an '=' not a '-'.
...
Hector Bojorquez
03:35 PM Software Development: RE: Problems with the first time configuration
Hector Bojorquez wrote:
> Hi Jonathan,
>
> I made the changes, and yes the problem continues the same, I checked ...
Jonathan Cormier
02:56 PM Software Development: RE: Problems with the first time configuration
Hi Jonathan,
I made the changes, and yes the problem continues the same, I checked the bootargs and this was the r...
Hector Bojorquez
01:20 PM Software Development: RE: Problems with the first time configuration
Thanks for all the logs, definitely helpful. The kernel panic indicates that it failed to find the filesystem. See be... Jonathan Cormier
12:50 PM Software Development: RE: Problems with the first time configuration
Hi,
I followed the steps in the [[Reprogramming_a_Dead_Board]] guide and I got access to the u-boot prompt again, ...
Hector Bojorquez
05:15 PM Software Development: RE: Specifics on reserving DDR for PRU/ARM shared use
Regarding your specific questions, yes, you could use memmap to set aside a particular chunk of memory. Where you set... Bob Duke
05:07 PM Software Development: RE: Specifics on reserving DDR for PRU/ARM shared use
Hi Andrew,
I recommend you review the TI-provided documentation and examples for the PRU available here:
<https...
Bob Duke

06/13/2016

05:14 PM Software Development: RE: JFFS2 "scheduling while atomic" problem with L138 running linux kernel 3.2
Sorry I missed that Fred.
You can just make the change (swapping two lines) yourself for testing, or you can appl...
Bob Duke
05:12 PM Software Development: RE: JFFS2 "scheduling while atomic" problem with L138 running linux kernel 3.2
Note we can list any other jffs patches that is in the linux-3.2.y branch that isn't in ours by doing the following:
...
Jonathan Cormier
05:07 PM Software Development: RE: JFFS2 "scheduling while atomic" problem with L138 running linux kernel 3.2
The patch was included in the 3.2.18 kernel release. You can cherry-pick the patch from there to verify it fixes you... Jonathan Cormier
04:56 PM Software Development: RE: JFFS2 "scheduling while atomic" problem with L138 running linux kernel 3.2
Looks like someone already did the backport of the fix. The patch is very straight forward.
https://github.com/Angs...
Jonathan Cormier
04:28 PM Software Development: RE: JFFS2 "scheduling while atomic" problem with L138 running linux kernel 3.2
Ah, yes, so this is indeed the problem; the code you show above is _before_ the fix. The issue is mutex_lock cannot f... Fred Weiser
02:48 PM Software Development: RE: JFFS2 "scheduling while atomic" problem with L138 running linux kernel 3.2
Fred,
The current MityDSP-L138 kernel (Branch: mitydsp-linux-v3.2) has the following code in @fs/jffs2/gc.c@:
...
Bob Duke
10:18 AM Software Development: JFFS2 "scheduling while atomic" problem with L138 running linux kernel 3.2
I have been getting a lot of "scheduling while atomic" messages seemingly centered around JFFS2:
@Jun 12 12:08:37 ...
Fred Weiser
 

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