Activity
From 04/12/2016 to 05/11/2016
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...
- 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...
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]]
- 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 ...
- 10:38 AM Software Development: RE: iproute2 for SocketCAN with 3.2 Kernel
- Which wiki page are you referencing?
- The iproute2 utility for linux 3.2 seems to be unavailable from opkg. I am therefore unable to run the example in the...
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=... - 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...
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.
- 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...
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
- 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 ...
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... - 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]]
04/13/2016
- Hello,
I am writing some diagnostic software for our device to run through and make sure everything seems to be pr... - 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... - 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, ... - 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... - 09:48 AM Software Development: RE: High latency for DMTimer interrupt
- This code:...
- 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... - 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 ...
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 ... - I have implemented a timer interrupt in a kernel module. At the start of the isr, it reads the timer value which sho...
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