Activity
From 05/15/2016 to 06/13/2016
06/13/2016
- BD 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 apply the commit via Jon's instruction.
If that fixes your problem, we can push it to our main branch.
- JC 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:
- JC 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 your issue.
- JC 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/Angstrom-distribution/meta-ti/blob/master/recipes-kernel/linux/linux-ti33x-psp-3.2/3.2.18/0027-jffs2-Fix-lock-acquisition-or... - FW 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 follow spin_lock. Spin_lock places the kernel into atomic mode; during this mode, the processor must not call scheduler, ...
- BD 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@: - I have been getting a lot of "scheduling while atomic" messages seemingly centered around JFFS2:
@Jun 12 12:08:37 ultrasonic kernel: BUG: scheduling while atomic: flash-writer/2221/0x00000002
Jun 12 12:08:37 ultrasonic kernel: Module...
06/10/2016
- The note in the wiki article for getting started with PRU mentions the following:
??A safe design that wanted to use shared DDR would probably have to either reserve some memory similar to how the DSP does by using mem= in bootargs. O... - JC 11:34 AM Software Development: RE: Problems with the first time configuration
- Hector, I'm not sure what commands you ran but the nand commands you show shouldn't have created this. It appears you've erased the u-boot part from the SPI NOR. You will need to follow the [[Reprogramming_a_Dead_Board]] guide.
- HB 11:04 AM Software Development: RE: Problems with the first time configuration
- I followed the Guide without errors advice, and at the final step I got the attached text (MKD_Update_End)
But when I tried to boot it up something went wrong
@OMAL-L138/AM-1810 initialization passed!
Configuring 128 MB mDDR
B...
06/09/2016
- JC 06:04 PM Software Development: RE: Problems with the first time configuration
- Hector Bojorquez wrote:
> >Both the nfsd and portmap services are not critical during boot and should not cause it to hang. Its possible some other service hung but didn't print anything out yet. Did you change anything before this happ... - HB 05:51 PM Software Development: RE: Problems with the first time configuration
>Both the nfsd and portmap services are not critical during boot and should not cause it to hang. Its possible some other service hung but didn't print anything out yet. Did you change anything before this happened?
I just ran some ...- JC 04:05 PM Software Development: RE: Problems with the first time configuration
- Both the nfsd and portmap services are not critical during boot and should not cause it to hang. Its possible some other service hung but didn't print anything out yet. Did you change anything before this happened?
You may need to ref... - HB 03:42 PM Software Development: RE: Problems with the first time configuration
- Sorry I used to take pictures because the machine where is installed Vbox has no access to the network, even if I need to take out some info from there I need a special USB
that is why I take pictures for making faster, but I will tr... - JC 01:47 PM Software Development: RE: Problems with the first time configuration
- Hector Bojorquez wrote:
> Hi Jonathan,
> ...
Hector could you include the full boot log? It also much easier for me if you copy the text into a text file and upload that instead of taking a picture snapshot of the bootlog.
- HB 11:32 AM Software Development: RE: Problems with the first time configuration
- Hi Jonathan,
Since I got the HelloWorld I just played with some simple code and it worked well, but today when I tried to boot up the card the bootloader stops with a message at the end
*"svc: failed to register nfsdv2 RCP service...
06/02/2016
- AB 02:39 PM Software Development: RE: Pinmux changes back on its own
- Hi Jonathan, thanks for looking into this. The L138 technical reference manual does show many of the SYSCFG registers being modifiable only in a privileged mode, including PINMUX registers. I tried reading and writing to PRU internal gen...
- JC 01:50 PM Software Development: RE: Pinmux changes back on its own
- Found this post for the 335x which mentions that the pinmux registers are protected. Its likely this is also true for the L138.
https://groups.google.com/forum/#!topic/beagleboard/D8hU7LddIu0 - JC 01:30 PM Software Development: RE: Pinmux changes back on its own
- I can confirm that doesn't appear to work.
- AB 10:29 AM Software Development: RE: Pinmux changes back on its own
- I was able to compile busybox (after making an empty syncfs() function in sync.c as a quick workaround), and here's what I get:
- HB 01:39 PM PCB Development: RE: Questions about my product version
- I got this:
>root@mityomapl138:~# dmesg | grep 'Part Number'
> ...
So I think I can be sure that I have MitySOM-1810F
Thanks Jonathan.
- AB 01:22 PM PCB Development: RE: Questions about my product version
- Hector,
To determine the model of a specific module please refer to the label that is located on the bottom side of the module.
For example you would see the 1810-FG-225-RC which would mean that the module is an AM1810 processor. ... - JC 01:14 PM PCB Development: RE: Questions about my product version
- During the linux boot, it should print out the model number of the module. Here is what my L138 prints out:
- Hello everybody,
I requested for a MitySOM-1810F + PROFIBUS-development kit from Avnet, and I got kind of confused with the product I received
It is supposed that the MitySOM-1810F should look like this:
!MitySOM-1810F-web.jpg! ... - JC 08:51 AM Software Development: RE: Problems with the first time configuration
- Note the old filesystem has an outdated url for opkg. Angstrom moved their feeds to here: http://feeds.angstrom-distribution.org/feeds/. You might be able to update the urls in /etc/opkg to point to the new location if you want to use o...
06/01/2016
- HB 05:50 PM Software Development: RE: Problems with the first time configuration
- I changed it to the older toolchain and it works! , I will try to do the MDK updating
From: https://support.criticallink.com/redmine/boards/10/topics/2559?r=4113#message-4113
> I needed to set up the environment for the v4.3.3 tool... - JC 05:01 PM Software Development: RE: Problems with the first time configuration
- Correct link to forum post: https://support.criticallink.com/redmine/boards/10/topics/2559?r=4113#message-4113
- JC 05:00 PM Software Development: RE: Problems with the first time configuration
- Note: If you're starting a new project, I recommend updating your filesystem to the latest MDK and using the newer toolchain.
[[Updating_devkit_to_latest_MDK]]
- JC 04:58 PM Software Development: RE: Problems with the first time configuration
- Hector Bojorquez wrote:
> Thanks again,
> ...
Your using a newer toolchain than your filesystem. See this forum post: https://support.criticallink.com/redmine/projects/arm9-platforms/activity?from=2014-07-30 - HB 04:39 PM Software Development: RE: Problems with the first time configuration
- Thanks again,
I will check it with IT guys.
I got in the MityDSP from the VM with *_ssh root@192.168.0.151_* in terminal, so I tried to continue with the Starter Guide tutorial,
when I tried to run the HelloWorld executable I go... - JC 03:21 PM Software Development: RE: Pinmux changes back on its own
- One difference with the busybox code is they seem to be taking pains to make sure their mmap is page aligned.
https://git.busybox.net/busybox/tree/miscutils/devmem.c#n80 - JC 03:11 PM Software Development: RE: Pinmux changes back on its own
- You can download the latest busybox and cross compile it. Should be something like below assuming you've set the toolchain in the path and the --host matches your toolchain. The busybox executable can be copied to the home directory an...
- AB 03:00 PM Software Development: RE: Pinmux changes back on its own
- It looks like devmem is missing from the version of busybox (v1.19.4) included with the 2014-01-13 root file system image, which I'm currently using. Is it straightforward to update busybox? I looked through the source for the most recen...
- JC 10:21 AM Software Development: RE: Pinmux changes back on its own
- Do you have the same problem using the devmem utilty? It also uses the /dev/mem interface. If it works perhaps you can use strace to see what its doing differently.
@strace devmem 0x01C14134 0x118112@ - AB 10:18 AM Software Development: RE: Pinmux changes back on its own
- I've played around with it a bit more, and it seems the issues does not have to do specifically with PINMUX registers. It seems that all writes through memory mapped /dev/mem are failing to actually take effect, i.e., the register is not...
- JC 09:26 AM Software Development: RE: Pinmux changes back on its own
- Strange, the only time the pinmux should get modified is during u-boot initialization and during kernel boot. Otherwise there isn't anything in linux that should be modifying the pinmux. Unless you need to dynamically change the pinmux...
05/31/2016
- JC 02:15 PM Software Development: RE: Problems with the first time configuration
- Hector Bojorquez wrote:
> Hi again!,
FYI, if you want to link to attachments in redmine, the syntax is @attachment:Booting_up.jpg@ attachment:Booting_up.jpg
> ...
This is good
>
> ...
The command shows that no ip address has been a... - HB 01:04 PM Software Development: RE: Problems with the first time configuration
- Hi again!,
Thanks Jonathan, It looks that it has already booted up in Linux +{Attached 1 Booting_up.jpg}+
I have written the @ ifconfig -a@ command in U-Boot prompt and this was the output: +{Attached 2 ifconfig.jpg}+ *Is this th...
05/27/2016
- I'm trying to set up PINMUX5 at address 0x01C14134 to have EPWM1A on the output. It seems to take on the desired value momentarily, but the value subsequently changes back after only a brief moment. The following is the code that I'm using:
05/26/2016
- JC 09:48 AM Software Development: RE: Instructions to get going with the OMAP PWM
- Andrew Bean wrote:
> I'm trying to get EPWM1A running with the MityDSP-L138 module and MityDSP-L138 (F) Family Development Kit.
> ...
I'm not sure if anyone here has used the pwm's on the L138. Looking at the l138 kernel to see if the...
05/25/2016
- I'm trying to get EPWM1A running with the MityDSP-L138 module and MityDSP-L138 (F) Family Development Kit.
1) Is there a set of instructions or any discussion on using the PWM specifically for the MityDSP-L138? All I need is a square wa... - JC 02:53 PM Software Development: RE: Problems with the first time configuration
- If this is the module that came with the devkit then it should boot into linux when powered on assuming you don't hit any keys during the boot loader stage.
If its just booting to the u-boot prompt it would be helpful to see the full ... - HB 02:06 PM Software Development: RE: Problems with the first time configuration
- Hi Jonathan,
I'm using now TeraTerminal, my serial port is working OK and I got in the U-Boot prompt, I checked the configuration of the Network Adapter of the Virtual Machine and is set up like a Bridge.
I tried to ping the VM I...
05/24/2016
- AB 07:27 PM Software Development: RE: PRU_gpioToggle example fails sometimes
- So, I've been playing around with the example code more to try to get the interrupt wait() and clear() to work.
This is how it is supposed to work: - AB 02:00 PM Software Development: RE: PRU_gpioToggle example fails sometimes
- In @static int LOCAL_exampleInit ( unsigned short prunum )@ of PRU_gpioToggle.c we need to have
- AB 11:42 AM Software Development: RE: PRU_gpioToggle example fails sometimes
- So this is strange. I modified the gpioToggle code to have the following:
- JC 01:30 PM Software Development: RE: Problems with the first time configuration
- Hector Bojorquez wrote at https://support.criticallink.com/redmine/projects/arm9-platforms/activity?from=2016-05-24:
> Hi everyone, I'm starting with the PROFIBUS development kit and I was trying to follow the starter guide until I came... - JC 01:20 PM Software Development: RE: Starter Guide: "Boot the MityDSP-L138 up into linux." - How?
- Hector, I'm going to respond in your other forum post.
https://support.criticallink.com/redmine/boards/10/topics/4825 - HB 12:05 PM Software Development: RE: Starter Guide: "Boot the MityDSP-L138 up into linux." - How?
- Hi everyone, I'm starting with the PROFIBUS development kit and I was trying to follow the starter guide until I came to the _*boot up in linux*_ step just like Jeff
I have Enabled the serial port from VBox and configured the port mod...
05/23/2016
- AB 11:11 PM Software Development: RE: PRU_gpioToggle example fails sometimes
- This seems to be the same as one of the issues that Jonathan Cormier observed in the topic that you linked. E.g., "gpioToggle test passed when i just ran it. Not sure why." whereas he had earlier posted that it failed.
As for trying t... - BD 10:30 PM Software Development: RE: PRU_gpioToggle example fails sometimes
- Andrew,
Another user was able to successfully run the demos on the MityDSP-L138, but perhaps they didn't test things as strenuously as you did.
<https://support.criticallink.com/redmine/boards/10/topics/4026>
Regarding point 2, ... - I'm having multiple issues with the PRU example PRU_gpioToggle. In short, it seems like some read/write operations to memory mapped locations are not always executing properly. The two problem spots are the following:
1) In the exampl...
05/20/2016
- HB 05:10 PM Software Development: RE: Problems with the first time configuration
- Hi Jonathan,
I imagine that you always work with more experienced users :D , but I'm just starting with this kind of systems, I will be waiting anxiously for the post.
Meanwhile I'll check all about the MDK updating and about my s... - JC 04:53 PM Software Development: RE: Problems with the first time configuration
- Hector,
Sorry about all this. I am going to see if someone can add some detail to the Quick start guide about initial power on. Hopefully will work on it on Monday.
In the meantime we usually use putty or teraterm for accessing t... - HB 04:35 PM Software Development: RE: Problems with the first time configuration
- Thanks for the quick response,
??Running debug in this case has probably tried to run the program on the VM. This HelloWorld file was compiled for the MityDSP so will only run on the MityDSP platform.??
I see, that has a lot ... - JC 02:39 PM Software Development: RE: Problems with the first time configuration
- Hector Bojorquez wrote:
> Hi everyone!
> ...
Running debug in this case has probably tried to run the program on the VM. This HelloWorld file was compiled for the MityDSP so will only run on the MityDSP platform.
>
> ...
You must u... - Hi everyone!
I have just acquired the PROFIBUS development kit from Critical Link, I was trying to put it on following the Starter guide steps in Critical Link support page,
I updated and installed the GCC, the MDK and the CDT, I con...