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From 06/20/2013 to 07/19/2013

07/18/2013

06:50 PM Software Development: RE: RS-485 problems
Solved the problem myself - it turns out that either SER_RS485_RTS_ON_SEND or SER_RS485_RTS_AFTER_SEND must be define... Steven Hill
05:54 PM Software Development: RE: RS-485 problems
OK, then it all makes sense. In spite of the way the connector is shown in the documentation I was assuming (never a... Steven Hill
05:20 PM Software Development: RE: RS-485 problems
Actually, I take that back. The pin out is illustrated in Figure 2 of the specification....
-Mike
Michael Williamson
05:13 PM Software Development: RE: RS-485 problems
Ah,
I think I may see the problem. Those connectors are pinned (on our PCB) for use with a ribbon cable and a DB-...
Michael Williamson
05:08 PM Software Development: RE: RS-485 problems
My board is 80-000268RI-2B, S/N 132541. I looked at the appropriate document on the page you referenced, and while i... Steven Hill
04:59 PM Software Development: RE: RS-485 problems
Hi Steven,
Let's make sure you are referencing the correct revision information for the board (it has been updated...
Michael Williamson
04:07 PM Software Development: RE: RS-485 problems

I am looking at pins on J504, based on the Industrial IO Board rev C documentation
Curiously, only pins 1,2,3,4,...
Steven Hill
03:27 PM Software Development: RE: RS-485 problems
OK, here is what I see:
mitydsp@mitydsp-VirtualBox:~/linux-davinci$ git branch
master
* mitydsp-linux-v3.2
mi...
Steven Hill
03:24 PM Software Development: RE: RS-485 problems
I am assuming it compiled OK.
Are you sure that the write() call is returning successfully? Can you send the full...
Michael Williamson
03:22 PM Software Development: RE: RS-485 problems
Btw press q to escape @git log@. Jonathan Cormier
03:21 PM Software Development: RE: RS-485 problems
Steven,
Run the command @git branch@ to see which branch is selected. It should say mitydsp-linux-v3.2. When you...
Jonathan Cormier
03:18 PM Software Development: RE: RS-485 problems
OK, I built the new kernel and flashed it to the MityDSP - now uname gives:
Linux mityomapl138 3.2.0+ #1 PREEMPT T...
Steven Hill
02:43 PM Software Development: RE: RS-485 problems
Sorry - my mistake. I re-installed the toolchain and then realized that I had typed "CROSS-COMPILE" instead of "CROS... Steven Hill
02:06 PM Software Development: RE: RS-485 problems
I seem to have the same problems - here is the output from a new shell:... Steven Hill
01:52 PM Software Development: RE: RS-485 problems
You only use the HOST native CC, not the cross tools, to build the config file. It seems like you have a CC environm... Michael Williamson
01:41 PM Software Development: RE: RS-485 problems
I'm getting errors when I try to build the kernel:
mitydsp@mitydsp-VirtualBox:~/linux-davinci$ make ARCH=arm CROSS...
Steven Hill
11:26 AM Software Development: RE: RS-485 problems
If you have our repository cloned already....... Michael Williamson
11:14 AM Software Development: RE: RS-485 problems
A newbie question - How do I build this particular branch of the kernel? Steven Hill
10:34 AM Software Development: RE: RS-485 problems
Thanks for your response. Here is what I get from uname:
Linux mityomapl138 3.2.0 #1 PREEMPT Wed May 15 09:16:03 ED...
Steven Hill
12:30 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
One thought:
Is it possible the tri-state drive logic for the data lines off the FPGA is creating bus contention? ...
Michael Williamson
12:24 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
Hi Mike,
Thanks for the suggestions.
Not sure I understand what you mean by FPGA access bandwidth. It is being ...
Mostafa Afgani

07/17/2013

09:17 PM Software Development: RE: RS-485 problems
OK. I have added the patch to the mitydsp-linux-v3.2 branch. You should be able to at least see the Tx line toggle ... Michael Williamson
08:55 PM Software Development: RE: RS-485 problems
Hi Steven,
Sorry for the confusion. It's not a menuconfig item. There is a patch needed to enable the UART2 pin...
Michael Williamson
08:32 PM Software Development: RE: RS-485 problems
How would anyone know this? I have looked at the config of the kernel I am using and you are correct, these pins are... Steven Hill
07:05 PM Software Development: RE: RS-485 problems
Hello,
Is is possible your kernel may not be setting up the ARM pin multiplexing for UART2? In your baseboard file...
Dominic Giambo
06:48 PM Software Development: RE: RS-485 problems
I have attached the files defining the class and showing how I open the serial port. Then I just use standard write c... Steven Hill
05:07 PM Software Development: RS-485 problems
I am trying to get the RS-485 running on my Industrial I/O board with the L-138F. I'm using the example code in "sen... Steven Hill
07:38 AM FPGA Development: RE: EMA_WAIT and bus contention on L138F
Hello,
How much bandwidth are you using for the FPGA accesses? Have you looked with any sort of bus analyzer (per...
Michael Williamson

07/16/2013

12:07 PM FPGA Development: EMA_WAIT and bus contention on L138F
We have a project which uses CS4 and CS5 to write and read data from a pair of FPGA FIFOs respectively. CS4 is used e... Mostafa Afgani

07/15/2013

05:23 PM Software Development: RE: Simple example needed
Thanks for the help. I decided to take a very simple approach and use mmap to access the FPGA, based on the mmap exa... Steven Hill

07/14/2013

08:22 AM Software Development: RE: Simple example needed
Answers to questions:
1. The reserved FPGA id's are in the file: $MDK/sw/common/fpga/core_ids.h. I would use core...
Michael Williamson

07/12/2013

02:02 AM Software Development: RE: flash and boot utils
Hi Mike,
I finally took the newest flash loader sources from TI (v2.40) and followed the wiki instructions (http:/...
Stéphane Peter
01:58 AM Software Development: RE: shared memory in the DSP Helloworld example
Thanks mike. That cleared my doubts. Vinod Ganesh

07/11/2013

09:50 AM Software Development: RE: Simple example needed
I just thought of another question. Not being familiar with linux, I am wondering what abstraction I might be able t... Steven Hill
09:33 AM Software Development: RE: Simple example needed
OK, I am probably going to have a lot of questions. To start with:
1. What IDs are available to use for my core?
2....
Steven Hill
07:44 AM Software Development: RE: Simple example needed
Hi Steven,
My understanding is that you have your own FPGA IP and want to control it (including catching an interr...
Michael Williamson
07:12 AM Software Development: RE: shared memory in the DSP Helloworld example
Hello Vinod,
The memory allocated is in the OMAP external DDR2 memory, and is actually in the DSPLINK POOL segment...
Michael Williamson
06:49 AM Software Development: shared memory in the DSP Helloworld example
hi,
Where does the memory allocated by GetBuffer() reside? Is it in the external RAM or OMAP's internal memory? Fo...
Vinod Ganesh

07/10/2013

07:16 AM Software Development: RE: flash and boot utils
Hi Mike,
We are using the serial flash tool to replace the preprogrammed U-Boot with an own SysBios based loader app...
Stéphane Peter
07:01 AM Software Development: RE: flash and boot utils
Hello,
Are you using the serial flash tool instead of u-Boot to program application images?
Are you rebuilding ...
Michael Williamson
03:28 AM Software Development: flash and boot utils
Hello,
I rebuilt the SPI serial flash tool (sfh_OMAP-L138.exe) from the MDK_2013_05_15 sources. Therefor I changed...
Stéphane Peter

07/09/2013

10:46 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
Hi,
I am using a nondescript USB to RS232 cable, dmesg tells me its a FTDI USB-RS232 cable, with a FT232RL onboard...
Christopher Brunson
09:55 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
Chris,
Glad to hear of your success... if you don't mind, can you detail your setup a bit. Are you using a USB seria...
Tim Iskander
09:50 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
Hi,
I finally got it working by directly connecting the serial port to the board.
Thanks for the help,
Chris.
Christopher Brunson
09:15 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
Hi,
Swapping up the cables sees to make no difference, and if I plug in my work PC into the supplied cross over ca...
Christopher Brunson

07/08/2013

09:09 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
Chris,
Have you tried to add another null modem adapter into the mix or a straight-thru cable just as a sanity che...
Jonathan Cormier
06:54 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
Hi Bob,
I have been trying with both screen and putty.
Both seem to work fine when I loopback the tx and rx lin...
Christopher Brunson

07/07/2013

09:47 PM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
Hello Christopher,
What terminal program are you using to connect to the serial port on your PC?
-Bob
Bob Duke

07/05/2013

11:42 AM Software Development: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
I am trying to load the hello world program.
So I set up the serial port on my pc with the following settings:
...
Christopher Brunson

07/02/2013

04:18 PM Software Development: RE: Simple example needed
Yes, I'm looking for an example similar to the Hello World ARM/DSP project... Steven Hill
03:32 PM Software Development: RE: Simple example needed
Is your ARM processor going to run linux?
Michael Williamson
01:22 PM Software Development: Simple example needed
I am using the MityDSP L-138F Industrial development board. I am not finding the examples for that board given in th... Steven Hill
10:51 AM FPGA Development: RE: Hardware Reset
On the MityDSP-L138F, RESET_IN pin is fed into a TPS3808G33DBVR reset monitor circuit. It is not connected to the FP... Michael Williamson
10:06 AM FPGA Development: RE: Hardware Reset
Hi Mike,
In effect yes. I was wondering if the device/circuit which drives the reset pin of the OMAP processor is ...
Craig Little

07/01/2013

07:49 PM FPGA Development: RE: Hardware Reset
When there is a power on reset, the FPGA will be re-initialized (the program pin is pulled low) and will require repr... Michael Williamson
10:48 AM FPGA Development: Hardware Reset
Hi There,
Is there a pin on the MityDSP-L138F processor board FPGA which is attached to a
dedicated power-on/har...
Craig Little

06/28/2013

01:19 PM Software Development: RE: mtd->read (...) returned ECC error
Hi Tim,
since today, the same problems as already mentioned are happening at the moment on my board.
Before I sta...
Christian Rückl

06/27/2013

04:56 AM Software Development: RE: Fail to boot the kernel after running setup.sh in DVSDK 4.03
Hi Mike & Jonathan,
Really appreciate your help!
The kit could load the kernel now.
-Derek
Derek Tan

06/26/2013

04:48 PM Software Development: RE: Fail to boot the kernel after running setup.sh in DVSDK 4.03
Derek,
Where you aware of this wiki page?
http://support.criticallink.com/redmine/projects/arm9-platforms/wiki/Dv...
Jonathan Cormier
07:26 AM Software Development: RE: Fail to boot the kernel after running setup.sh in DVSDK 4.03
Hi Derek,
The kernel that comes with the DVSDK (uImage-da850-omapl138-evm.bin) will not work with the MityDSP-L138...
Michael Williamson
02:19 PM FPGA Development: RE: Problem building IndustrialIO project build_lcd_rev_c
I found the solution to the problem. I had to remove the Xilinx device that was in the iMPACT window (left over from... Steven Hill
01:57 PM FPGA Development: RE: Problem building IndustrialIO project build_lcd_rev_c
OK clearly it's not finding the file (according to the log). Looks like you have spaces in your path to the bit file... Michael Williamson
01:54 PM FPGA Development: RE: Problem building IndustrialIO project build_lcd_rev_c
That does not seem to work. WHen I double click on "Generate File" I get a big red "Generate Failed" box. The word "b... Steven Hill
01:31 PM FPGA Development: RE: Problem building IndustrialIO project build_lcd_rev_c
Not having the tools up in front of me. I think you can put more than one bit file into a configuration PROM (to sup... Michael Williamson
01:22 PM FPGA Development: RE: Problem building IndustrialIO project build_lcd_rev_c
I built a simple project based on files for GPIO_Test from Conor O in the post "Xilinx design suite 14.2 and MDK_2012... Steven Hill
09:02 AM FPGA Development: RE: Problem building IndustrialIO project build_lcd_rev_c
Hi Steven,
The issue here is that entity description for the i2c component has changed since the Rev A and B boar...
Gregory Gluszek
07:29 AM PCB Development: RE: Expansion IO mating headers type
We use "Molex 87759-5050":http://www.mouser.com/ProductDetail/Molex/87759-5050/?qs=%2Fha2pyFadujxwC2WDHBby6OIFIiNwyQw... Michael Williamson
04:55 AM Software Development: RE: Data Transfer over DSPLink
Great!
This works :)
Thanks,
Christian
Christian Rückl

06/25/2013

09:30 PM Software Development: RE: Fail to boot the kernel after running setup.sh in DVSDK 4.03
Hi Jonathan,
Thank you for your reply:)
I'm using the Industrial IO Development Kit with MityDSP-L138F. No ch...
Derek Tan
10:02 AM Software Development: RE: Fail to boot the kernel after running setup.sh in DVSDK 4.03
Derek,
I'm unclear with what you changed between when it was last working and now.
-Jonathan
Jonathan Cormier
12:56 AM Software Development: RE: Fail to boot the kernel after running setup.sh in DVSDK 4.03
I have build the kernel with codes in git://support.criticallink.com/home/git/linux-davinci.git
No more output is ...
Derek Tan
04:02 PM FPGA Development: Problem building IndustrialIO project build_lcd_rev_c
Following on from a similar question in the forum "Creating FPGA Base-Project - core manager problem" I am trying to ... Steven Hill
03:48 PM Software Development: RE: CPU Clock and FPGA clock interaction
Based on what you have told me about Linux operating points, I won't be fooling with the CPU frequency. I will find ... Steven Hill
02:51 PM Software Development: RE: CPU Clock and FPGA clock interaction
Hi Steven,
If you need a specific frequency for your FPGA, I would recommend adding an external Crystal or Oscilla...
Michael Williamson

06/24/2013

10:28 PM Software Development: RE: Fail to boot the kernel after running setup.sh in DVSDK 4.03
uboot env:
> U-Boot > printenv
> flashuboot=tftp 0xc0700000 mityomap/u-boot-ubl.bin; sf probe 0; sf erase 0x10000...
Derek Tan
09:42 PM Software Development: Fail to boot the kernel after running setup.sh in DVSDK 4.03
Hi all, I have just running setup.sh in DVSDK_4.03, and MityDSP-L138F could not boot the kernel now.
Serial port o...
Derek Tan
03:10 PM Software Development: RE: Networking requires ifup
Bingo. Good catch. I didn't look close enough at the comma/space separators.
Thanks for your help!
Joe.
Joe Bauman
03:05 PM Software Development: RE: Networking requires ifup
The big difference between your boot and mine is:
I have...
Jonathan Cormier
02:55 PM Software Development: RE: Networking requires ifup
The only thing in the boot log that jumps out at me is:... Joe Bauman
11:38 AM Software Development: RE: Networking requires ifup
Joe,
Looking at the networking startup script, all it does is run ifup -a to bring the interfaces up. Could you t...
Jonathan Cormier
11:27 AM Software Development: Networking requires ifup
Starting a new post for this question.
When the MityDSP (L138F) boots up, I am unable to connect via SSH. I have ...
Joe Bauman
02:00 PM Software Development: CPU Clock and FPGA clock interaction
For various reasons I would prefer an FPGA clock of 96 MHz. Am I right in assuming that if I modify the kernel to ge... Steven Hill
10:29 AM Software Development: RE: DSP Helloworld execution error
commenting out the deletes solved the problem
thanks
Vinod Ganesh
08:57 AM Software Development: RE: DSP Helloworld execution error
Vinod,
If you look at the arm_main.cpp file, the application doesn't wait for you to press q. Its currently setup...
Jonathan Cormier
05:46 AM Software Development: DSP Helloworld execution error
hi,
I could successfully compile the arm_main.cpp in eclipse and dsp_main.cpp in ccs. But upon execution the exit ...
Vinod Ganesh
10:21 AM Software Development: RE: Missing Angstrom Packages
Good to know.
As far as eth0 not coming up some things to look at:
* Make sure that ip=dhcp was passed to kernel...
Jonathan Cormier
09:51 AM Software Development: RE: Missing Angstrom Packages
Thanks Jonathan -
That worked just fine - I started down that path but didn't get the right combination of package...
Joe Bauman
10:05 AM Software Development: RE: DSP Hello World error message
Thanks for your help Nick Arango
09:02 AM Software Development: RE: DSP Hello World error message
Nick,
I've just updated the wiki page with a new arm_main.cpp and cleaned up some of the instructions. The error ...
Jonathan Cormier
09:02 AM Software Development: RE: Warning messages when running DSP Hello World
Nick and François,
I've just updated the wiki page with a new arm_main.cpp and cleaned up some of the instructions...
Jonathan Cormier

06/23/2013

04:51 PM FPGA Development: Core Creation Guidelines
The link to "FPGA Core Creation Guidelines" appears to be broken in the Wiki - can anyone point me to the relevant in... Steven Hill
01:38 PM PCB Development: Expansion IO mating headers type

Hi
Wat are recomended type of male headers mating with the Industrial IO Development Kit expansion IO connectors J...
Henryk Kowalski

06/21/2013

11:47 AM Software Development: RE: Missing Angstrom Packages
I was using the latest MDK filesystem but I suspect it will work the same for your version.
-Jonathan
Jonathan Cormier
11:46 AM Software Development: RE: Missing Angstrom Packages
Joe,
This seems to be a problem with the latests Angstrom repos. I was able to find a forum post related to this....
Jonathan Cormier
11:21 AM Software Development: Missing Angstrom Packages
Good Morning -
Has anyone had any luck getting "missing" Angstrom packages installed when using the 2012-08-10 MDK...
Joe Bauman

06/20/2013

03:35 PM Software Development: RE: DSP Hello World error message
[Edit] Woops I quoted myself instead of edited. Jonathan Cormier
03:35 PM Software Development: RE: DSP Hello World error message
Steven,
I just followed the [[DSP_Hello_World]] tutorial and didn't have the same build errors you did. It should...
Jonathan Cormier
11:12 AM Software Development: RE: Data Transfer over DSPLink
Messages don't have to be strings. You can create message structures (and include headers, for example, that contain... Michael Williamson
10:13 AM Software Development: Data Transfer over DSPLink
Hi,
I was able to run the "DSP Hello World" totorial in the wiki but there i can only transfer messages between bo...
Christian Rückl
10:07 AM Software Development: RE: GPIO Output immediately after power on
Thanks Mike,
the stronger pull downs should be acceptable in my design.
christian
Christian Rückl
 

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