Activity
From 07/09/2014 to 08/07/2014
08/07/2014
- 08:54 AM Software Development: RE: DSP HelloWorld Compile with gcc 4.3.3
- I created a how to for updating an L138 devkit. Let me know if theres any confusing parts.
[[Updating devkit to lat...
08/06/2014
- I've recently completed the ARM HelloWorld example via the Starter Guide Wiki page and need help with the DSP HelloWo...
08/05/2014
- 09:30 AM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- Patches have been merged into linux-mityarm-v3.2 branch.
- 09:16 AM Software Development: RE: I2C 0x8 Address
- Cleaned up and merged changes into mitydsp-linux-v3.2 branch.
http://support.criticallink.com/gitweb/?p=linux-davi...
08/04/2014
- 07:53 AM Software Development: RE: I2C 0x8 Address
- Yes, works fine now. Thanks Jonathan.
08/01/2014
- 01:47 PM Software Development: RE: I2C 0x8 Address
- I see now. Odd that i'm not encountering this lockup.
I moved the other cpufreq_notify and pushed it to the branch... - 11:16 AM Software Development: RE: I2C 0x8 Address
- Yes, that only works when moving to a higher frequency because the voltage adjustments are made before the call to cp...
- 11:12 AM Software Development: RE: I2C 0x8 Address
- And thats why i moved the cpufreq_notify_transition(&freqs, CPUFREQ_PRECHANGE); to below that line as seen in your di...
- 11:10 AM Software Development: RE: I2C 0x8 Address
- Really don't know why we're seeing different things. I checked out both 'mitydsp-linux-v3.2' and 'mitydsp-linux-v3.2_...
- 09:01 AM Software Development: RE: I2C 0x8 Address
- I'm not seeing this hang with or without i2c-2 enabled.
- 08:53 AM Software Development: RE: I2C 0x8 Address
- Yes, v3.2_i2c_wip checked out and compiled as-is.
- 08:32 AM Software Development: RE: I2C 0x8 Address
- Are you saying you run into the hang when only i2c-1 is enabled?
07/31/2014
- 03:36 PM Software Development: RE: Start Guide : Cannot build helloworld application with eclipse
- Instructions for flashing a new filesystem can be found here:
https://support.criticallink.com/redmine/projects/arm9... - 11:57 AM Software Development: RE: Start Guide : Cannot build helloworld application with eclipse
- After using the older toolchain v4.3.3 and existing ARM filesystem, I was able to get the HelloWorld executable to ru...
- 12:24 PM Software Development: RE: I2C 0x8 Address
- I've just tried the latest mitydsp-linux-v3.2 from git (without the i2c patches) and that works fine.
- 11:04 AM Software Development: RE: I2C 0x8 Address
- Just for clarification, I had reverted all changes to the branch (enabling i2c-2) so 'git status' shows no local modi...
- 10:41 AM Software Development: RE: I2C 0x8 Address
- Yes, it is:...
- 10:07 AM Software Development: RE: I2C 0x8 Address
- Just to verify this was with the newer mitydsp-linux-v3.2_i2c_wip branch?
- 09:55 AM Software Development: RE: I2C 0x8 Address
- That's really strange. The only modifications I made were to baseboard-industrialio.c in order to enable i2c-2:
<p... - 08:24 AM Software Development: RE: I2C 0x8 Address
- I tried your steps on the mitydsp-linux-v3.2_i2c_wip with i2c-2 enabled but didn't encounter a hang.
07/30/2014
- 01:33 PM Software Development: RE: Start Guide : Cannot build helloworld application with eclipse
- > root@mityomapl138:/var/volatile/tmp# ./HelloWorldCC
> ./HelloWorldCC: /usr/lib/libstdc++.so.6: version `CXXABI_ARM... - 12:48 PM Software Development: RE: Start Guide : Cannot build helloworld application with eclipse
- Jonathan,
Thanks for the reply.
Yes, I’ve followed the Starter Guide. Spent most of last week working through it.... - 08:18 AM Software Development: RE: I2C 0x8 Address
- Hi Jonathan, thanks for the testing branch. As our code is still based around the old 2.6.34-rc1 release, it will be ...
07/29/2014
- 02:25 PM Software Development: RE: I2C 0x8 Address
- I've created a test branch with my patches for this problem. Could you verify it works for you? Note that branch wo...
- 10:24 AM Software Development: RE: I2C 0x8 Address
- Okay I have submitted a bug report to the linux davinci mailing list using some of your procedures and stack trace. ...
- 10:12 AM Software Development: RE: I2C 0x8 Address
- Thanks Jonathan, I can confirm that the workaround allows the CPU frequency scaling to work with I2C1 enabled (but no...
- 09:56 AM Software Development: RE: I2C 0x8 Address
- It appears that the wait_for_completion is the wrong type of synchronization as it currently will always be true as l...
- 08:56 AM Software Development: RE: I2C 0x8 Address
- The transition function looks like following. The wait_for_completion call then calls wait_for_common which can be s...
- 08:50 AM Software Development: RE: I2C 0x8 Address
- I can confirm. Made the following changes to the 3.2 kernel and tried changing the frequency. It locks up if you do...
- 08:33 AM Software Development: RE: I2C 0x8 Address
- Hi Mike,
??To confirm, you don't see this issue with I2C1 not enabled in you kernel (the "stock" dev kit kernel), ... - 07:42 AM Software Development: RE: I2C 0x8 Address
- Ok, you didn't mention you are trying to adjust the CPU speed (or I missed it) as your I2C0 access method. That's no...
- 05:44 AM Software Development: RE: I2C 0x8 Address
- Hi Mike, actually our experience is the opposite:
1. Enable I2C1, flash the new kernel and reboot
2. Immediately ... - 09:09 AM Software Development: RE: Start Guide : Cannot build helloworld application with eclipse
- Have you followed the instructions located on the wiki? https://support.criticallink.com/redmine/projects/arm9-platf...
07/28/2014
- 03:13 PM Software Development: RE: Start Guide : Cannot build helloworld application with eclipse
- I'm working through the Starter Guide for the MityDSP-L138 configured with
- VirtualBox 4.3.0 (could not get Mity... - 11:55 AM Software Development: RE: I2C 0x8 Address
- Looks like the kernel is configuring the OMAP-L138 I2C slave address as 0x08 (by default, it is 0x00 - illegal - in t...
- 11:33 AM Software Development: RE: I2C 0x8 Address
- No worries. I don't think i2c-detect does anything strange with this address. By looking at the code, I don't see any...
- 11:29 AM Software Development: RE: I2C 0x8 Address
- We're looking at it now. I think that the i2c-tools may be emulating SMBus and trying to run the arbitration scheme ...
- 10:49 AM Software Development: RE: I2C 0x8 Address
- Source : System Management Bus (SMBus) Specification Version 2.0 August 3, 2000 :Appendix C – SMBus device address as...
- 10:20 AM Software Development: RE: I2C 0x8 Address
- OK. So is it a defect on the MityDSP-L138F board, or is it the address of the OMAP I2C bus?
- 09:54 AM Software Development: RE: I2C 0x8 Address
- Also on a devkit where the dvi chip was removed the 0x08 address still appears....
- 09:52 AM Software Development: RE: I2C 0x8 Address
- Well at the least I can identify the others. 0x38 is the dvi chip, 0x48 is the pmic, and 0x50-58 is the eeprom. Whe...
- 09:31 AM Software Development: RE: I2C 0x8 Address
- We use a custom baseboard, but the address 0x8 is at the the industrial IO development kit as well:
root@PureVLC:~... - 08:06 AM Software Development: RE: I2C 0x8 Address
- Did you set the pin-mux settings for the I2C1 lines on the second device in the kernel as well? For the devkit baseb...
- 07:59 AM Software Development: RE: I2C 0x8 Address
- The problem is that if we enable both I2C interfaces by changing the linux source code by adding the following lines ...
- 07:55 AM Software Development: RE: I2C 0x8 Address
- What are you using for your baseboard?
- 07:46 AM Software Development: RE: I2C 0x8 Address
- I am using MityDSP-L138F board.
- Hi All,
When I run i2cdetect -y 1 I get the following output:
0 1 2 3 4 5 6 7 8 9 a b c d e ...
07/23/2014
- 11:06 PM FPGA Development: RE: fpgautil read Issue
- Hi Mike,
I found the issue. I was updating the edo_out signals only when rd was going high.
From the waveform... - 08:42 PM FPGA Development: RE: fpgautil read Issue
- Can you post (or email me) you VHDL source related to the loopback register?
Do you have Chipscope? It might be w... - I'm using MityDSP-L138 Board. I have implemented a Custom IP in the FPGA board.
I'm using the CS5 ARM Chipselect ...
07/22/2014
- 11:42 AM Software Development: RE: uPP receiving problem
- Hello Silvano,
No, the MDK uPP libraries are not setup to work with the debugger. In your code you can try settin... - 08:54 AM Software Development: RE: uPP receiving problem
- The strange behaviour still continue.
When we do not send data to uPP using the FPGA the program does not have the s... - 03:10 AM Software Development: RE: uPP receiving problem
- Thanks a lot for the suggestion.
I will check with my colleague the VHDL connection.
I also had a check at the opti...
07/21/2014
- 12:41 PM Software Development: RE: uPP receiving problem
- The strange stepping sounds exactly like when optimizations are turned on.
- 11:46 AM Software Development: RE: uPP receiving problem
- I'm not a VHDL guy, so I can't say whether this will work as you have it. It sounds like you and your VHDL guy shoul...
- 11:34 AM Software Development: RE: uPP receiving problem
- Here you can find the VHDL sources.
I cannot help you a lot with VHDL becuse it is developed by a colleague of mine.... - 11:19 AM Software Development: RE: uPP receiving problem
- Thanks a lot.
Now the working principles are clearer.
The problem now is that the software has a strange behaviour.... - 11:09 AM Software Development: RE: uPP receiving problem
- Each time you call receive, a DMA is set up to fill the buffer you pass. Once that DMA completes, no data will be tr...
- 10:08 AM Software Development: RE: uPP receiving problem
- Ok thank you.
I will try to change all the interrupt levels.
Another question is: but once the buffer is filled? Wh... - 10:05 AM Software Development: RE: uPP receiving problem
- I don't see any reason that it wouldn't work, but I have seen issues with some interrupt levels not working. I stron...
- 09:59 AM Software Development: RE: uPP receiving problem
- Thanks to have a look.
I have the signal enable and start always active.
I think that therefore is right to set bCh... - 09:49 AM Software Development: RE: uPP receiving problem
- A couple of things that I see are different from some code that I have working here:
I use nHWInterruptLevel = 7. ... - Dear all,
I am trying to use to uPP to receive data coming from the FPGA.
Attached you can find the code I wrot...
07/15/2014
- 04:39 AM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- Hi Jonathan,
Thank you for your patches, it's working for me!
I have applied and successfully rebuilt my kernel.
...
07/14/2014
- 11:39 AM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- Ngoc,
Can you confirm that this is working for you and i'll move the changes into our main kernel branch?
I als... - 10:51 AM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- gpioToggle test passed when i just ran it. Not sure why....
- 10:24 AM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- Reran some of the commands to see which fail. The ./PRU_memAccessL3andDDR can cause system segfaults as it appears t...
- 09:11 AM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- Running through all the examples, atleast one of them seems to have caused a system segfault as not even reboot was a...
- 09:09 AM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- Hi Ngoc,
I have been working on getting this to work. So far i've integrated the patches which i've posted to a t... - 04:45 AM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- Hi,
Thank you, I'm waiting for your patches. ^^
Regards,
Manh BT - 09:25 AM Software Development: RE: uBoot and USB using L138F SoM
- I have been looking into this. It seems that it was a mistake as the added resistor isn't mentioned in our Engineeri...
- 03:28 AM Software Development: RE: uBoot and USB using L138F SoM
- OK, the cable that I used was a miniAB to USB A plug which was then attached to a USB A to USB A gender changer (a li...
07/13/2014
- 10:18 PM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- Hello Manh BT,
The patches Mike described are in the mainline Linux kernel (http://kernel.org/). You can search fo... - 09:42 PM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- Hi Michael,
Thanks for your information, but where can I get above patches? Is it in Critical Link MDK ?
Regard...
07/11/2014
- 01:30 PM Software Development: RE: uBoot and USB using L138F SoM
- As per the On-The-Go spec, the mini USB adapter is supposed to tie the USB_ID pin to GND to indicate it should be put...
- 12:36 PM Software Development: RE: uBoot and USB using L138F SoM
- Yep, loading an image seems to be OK. Next week I'll try the whole image + rootfs and make sure that works too.
T... - 12:20 PM Software Development: RE: uBoot and USB using L138F SoM
- OK, now I get it. There's no resistor on my board pulling the ID pin down to 0V. I've just put a link between pins ...
- 12:07 PM Software Development: RE: uBoot and USB using L138F SoM
- The number is 80-000286RI-2
REV B
S/N 132556
Which bootloader are you using? I've been using my own compilation... - 12:05 PM Software Development: RE: uBoot and USB using L138F SoM
- Whats the part number of your dev kit? Should be a 80- number.
- 12:03 PM Software Development: RE: uBoot and USB using L138F SoM
- I just tested this by first plugging the flash drive into the full size usb port J102. With no luck. Then plugged d...
- 11:43 AM Software Development: RE: uBoot and USB using L138F SoM
- I forgot to say that I know that the USB port works because, once in Linux I can mount the drive OK and read/write fi...
- Hi there,
I'm using the L138F SoM on a REV B Industrial I/O board and I am trying to boot from a USB drive. uBoot i... - 08:31 AM Software Development: RE: How to enable PRU Subsystem on MityDSP-L138F SOM ???
- Hi,
I think we need to add the following patches (from linus tree) to the kernel to instantiate the PRUSS drivers ... - Hi everyone!
I'm using MityDSP-L138F SOM + IO Industrial Board and now trying to work with PRU subsystem of OMAP-L...
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