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From 04/07/2016 to 05/06/2016

05/03/2016

08:54 AM Software Development: RE: iproute2 for SocketCAN with 3.2 Kernel
Okay, would you mind creating a forum post over there as it may help people find it in the future who are looking for... Jonathan Cormier
04:04 AM Software Development: RE: iproute2 for SocketCAN with 3.2 Kernel
Thanks for the quick response.
I'm afraid I posted this in the wrong topic yesterday, I am using an Industrial IO...
edward lambert

05/02/2016

10:58 AM Software Development: RE: iproute2 for SocketCAN with 3.2 Kernel
Added a 335x specific CAN wiki page: [[Using_CAN_port]] Jonathan Cormier
10:44 AM Software Development: RE: iproute2 for SocketCAN with 3.2 Kernel
There should be no need to install any packages. I've attached our cantest script. It expects can0 to be connected ... Jonathan Cormier
10:38 AM Software Development: RE: iproute2 for SocketCAN with 3.2 Kernel
Which wiki page are you referencing? Jonathan Cormier
10:35 AM Software Development: iproute2 for SocketCAN with 3.2 Kernel
The iproute2 utility for linux 3.2 seems to be unavailable from opkg. I am therefore unable to run the example in the... edward lambert

04/25/2016

03:42 PM Software Development: RE: All devices on i2c on the AM335 SOM
The factory config definition can be found here:
http://support.criticallink.com/gitweb/?p=linux-mityarm-335x.git;a=...
Jonathan Cormier
03:33 PM Software Development: RE: All devices on i2c on the AM335 SOM
Is there any way I can read the factory config eeprom and use that data to verify the correct SOMs are installed or u... Joseph Orender

04/20/2016

01:48 PM Software Development: RE: High latency for DMTimer interrupt
Mary, Thank you for this detailed post. Please let us know how this works out. Jonathan Cormier
01:44 PM Software Development: RE: High latency for DMTimer interrupt
Here's what I did to apply the RT PREEMPT patch:
Helpful websites:
https://rt.wiki.kernel.org/index.php/RT_PREEMP...
Mary Frantz

04/15/2016

10:06 AM Software Development: RE: High latency for DMTimer interrupt
Note that the RT linux page also has an Ftrace guide: https://rt.wiki.kernel.org/index.php/Ftrace Jonathan Cormier
09:53 AM Software Development: RE: High latency for DMTimer interrupt
Hi Mary,
Regarding RT Linux I would specifically recommend https://rt.wiki.kernel.org/index.php/RT_PREEMPT_HOWTO ...
Gregory Gluszek

04/14/2016

11:43 PM Software Development: RE: High latency for DMTimer interrupt
Mary,
Here is a link to the RT Linux Wiki:
https://rt.wiki.kernel.org/index.php/Main_Page
There's a direct lin...
Bob Duke
03:35 PM Software Development: RE: All devices on i2c on the AM335 SOM
I created a wiki page for this information. Let me know if it answers your question.
[[MitySOM-335x_I2C_Addresses]]
Jonathan Cormier

04/13/2016

02:30 PM Software Development: All devices on i2c on the AM335 SOM
Hello,
I am writing some diagnostic software for our device to run through and make sure everything seems to be pr...
Joseph Orender
11:09 AM Software Development: RE: High latency for DMTimer interrupt
Mary Frantz wrote:
> For more information about how the DM Timer works, refer the the AM335x Technical Reference Man...
Jonathan Cormier
10:59 AM Software Development: RE: High latency for DMTimer interrupt
For more information about how the DM Timer works, refer the the AM335x Technical Reference Manual.
To summarize, ...
Mary Frantz
10:09 AM Software Development: RE: High latency for DMTimer interrupt
Mary Frantz wrote:
> This code:
>
> [...]
>
> prints the value of 'start' (the counter value at the start of t...
Jonathan Cormier
09:48 AM Software Development: RE: High latency for DMTimer interrupt
This code:... Mary Frantz
09:28 AM Software Development: RE: High latency for DMTimer interrupt
Mary Frantz wrote:
> I see this when the printk() call displays the last 16 'start' counter values.
What do you mea...
Jonathan Cormier
08:58 AM Software Development: RE: High latency for DMTimer interrupt
No, this high latency is rare. Typical is more like 3 usec. I see this when the printk() call displays the last 16 ... Mary Frantz

04/12/2016

02:25 PM Software Development: RE: High latency for DMTimer interrupt
Hi Mary,
You mentioned that your maximum latency is ~500 usec. Is this maximum a rare or common occurrence? What ...
Gregory Gluszek
02:02 PM Software Development: High latency for DMTimer interrupt
I have implemented a timer interrupt in a kernel module. At the start of the isr, it reads the timer value which sho... Mary Frantz

04/08/2016

04:24 PM Software Development: RE: Building an SD Card
Tom Tatakis wrote:
> This is a custom board- I did move the init of mmc back to the early init stage as a test and t...
Jonathan Cormier
04:21 PM Software Development: RE: Building an SD Card
Tom,
We are working on a yocto filesystem release which allows you to build a new yocto based filesystem from sour...
Jonathan Cormier
03:52 PM Software Development: RE: Building an SD Card
Actually I do have a question- do you have a pointer to documentation that tells me how to build an SD card image fro... Tom Tatakis
03:50 PM Software Development: RE: Building an SD Card
This is a custom board- I did move the init of mmc back to the early init stage as a test and the file system came up... Tom Tatakis
02:08 PM Software Development: RE: Building an SD Card
Tom, one more question: are you running this on a Critical Link Development Board or your own custom baseboard?
Bob Duke

04/07/2016

09:57 AM Software Development: RE: Building an SD Card
Looking at the logs here are a few things I see.
* On the sd card boots, you are still loading u-boot from the nan...
Jonathan Cormier
09:02 AM Software Development: RE: Building an SD Card
Thanks for the reply- of course now the symptoms have changed. The bad boot now stops waiting for the file system pa... Tom Tatakis
 

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