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From 11/23/2013 to 12/22/2013

12/20/2013

11:46 AM Software Development: RE: DSP- EDMA Transmission problem
I'm not sure why you are dividing by 4 for the number of words to transfer (numwords>>2), but I think that is your pr... David Rice
10:33 AM Software Development: DSP- EDMA Transmission problem
Hello,
I am having the following problem:
I am invoking an EDMA transfer in my DSP-side application. To do so, I di...
Rafał Krawczyk

12/19/2013

07:16 AM Software Development: RE: "Regarding video Frame data flow without using Linux OS-Linux frame buffer"
Hi Naveen,
You can use the UPP port (see the tcDspUpp core in the DSP/core library) or use the VPIF (same pins, se...
Michael Williamson
02:10 AM Software Development: "Regarding video Frame data flow without using Linux OS-Linux frame buffer"
Hello sir,
Thank you for replying my previous queries.
We are using MitydspL138F VDK for developing prototype, ...
Naveen K.S

12/16/2013

09:50 AM Software Development: RE: First base with USB, OMAP-L138F
And... the capacitance requirements for any USB interface are *very* important. See the USB specification (usb.org) ... Michael Williamson
09:48 AM Software Development: RE: First base with USB, OMAP-L138F
Hello Helmut,
This is really an embedded linux question in general and not just a MityDSP-L138 specific question....
Michael Williamson
09:36 AM Software Development: RE: First base with USB, OMAP-L138F
Thanks. I'm tasking my kernel guy on this. The link for RNDIS advice will be helpful.
HOWEVER, I would prefer it...
Helmut Forren

12/13/2013

02:07 PM Software Development: RE: Accessing SPI1 bus
Hi,
To get the spidev device, you need to add an entry for it in your platform baseboard file.
See the recent "...
Michael Williamson
01:40 PM Software Development: RE: Accessing SPI1 bus
Nope. I don't see that either.
I am going with the low level register access for now. I have SPI driver code that...
Mary Frantz
12:21 PM Software Development: RE: Accessing SPI1 bus
Hi Mary,
My guess would be that since in your baseboard file you set the modalias to "M25PE80" as part of the spi...
Gregory Gluszek

12/12/2013

06:48 AM Software Development: RE: Call to tcDspFpgaGpio::ConfigurePin() makes the Dsp crash
Thanks Mike!
That was definitely the reason of the crash.
Thank you.
Michele
Michele Canepa

12/11/2013

04:01 PM Software Development: RE: First base with USB, OMAP-L138F
The only things I see different in your circuit besides the removed 5V vbus switch(U101) are:
* Missing USB0_ID pu...
Jonathan Cormier
12:17 PM Software Development: RE: First base with USB, OMAP-L138F
Jonathan,
Yes, we have a USB A connector coming from USB 0. So this should be akin to connecting a USB A to USB ...
Helmut Forren
11:31 AM Software Development: RE: First base with USB, OMAP-L138F
Mike, Correct me if I'm wrong.
"So maybe the question boils down to this. Can you plug a USB OTG device into a PC,...
Jonathan Cormier
11:03 AM Software Development: RE: First base with USB, OMAP-L138F
Michael,
Great. First, the P/N on my Critical Link baseboard actually matches the next to last, "80-000268RI-2 B"...
Helmut Forren
07:28 AM Software Development: RE: First base with USB, OMAP-L138F
Schematics for the industrial I/O base board are on this "wiki page":http://support.criticallink.com/redmine/projects... Michael Williamson
07:08 AM Software Development: RE: First base with USB, OMAP-L138F
Jonathan, I'll try those things. FYI one test case with a USB flash drive works for the critical link baseboard, but... Helmut Forren
07:12 AM Software Development: RE: Call to tcDspFpgaGpio::ConfigurePin() makes the Dsp crash
Hi Michele,
Set the CORE_INT_EOF_LEVEL to 1.
Our framework uses 2 levels (2 seperate GPIO interrupt lines betwe...
Michael Williamson
05:48 AM Software Development: RE: Call to tcDspFpgaGpio::ConfigurePin() makes the Dsp crash
This is the crash dump on the serial output:
Unable to handle kernel NULL pointer dereference at virtual address 0...
Michele Canepa

12/10/2013

09:27 PM Software Development: RE: First base with USB, OMAP-L138F
Hello!
If you have got console why don't you just copy files from your PC to board?
And another option - if USB hos...
Dmitry Gorulko
03:56 PM Software Development: Call to tcDspFpgaGpio::ConfigurePin() makes the Dsp crash
Dear Sirs,
I have to use a GPIO bank over FPGA to route some interrupts (let's say 8) through the fpga to the DSP.
...
Michele Canepa
12:55 AM Software Development: RE: Compiling the HelloWorld application with CGT
Thanks Mike,
I will try that out. However for the time being, I am continuing with CCS on Windows. :)
Regards
...
Prashant Dabholkar

12/06/2013

11:49 AM Software Development: RE: Accessing SPI1 bus
I don't see a SPI /dev/ entry.
Tried this (as in the example at https://www.kernel.org/doc/Documentation/spi/spi...
Mary Frantz
11:07 AM Software Development: RE: Accessing SPI1 bus
Hi Mary,
Reading and writing over a SPI bus on Linux is pretty simple. You need to open a file descriptor for the...
Gregory Gluszek
10:41 AM Software Development: Accessing SPI1 bus
How do you read/write to a device on the SPI1 bus (CS1) on the ARM side? Is there an example? Can I do low level re... Mary Frantz
09:43 AM Software Development: RE: First base with USB, OMAP-L138F
Once you have the network connection up you can easily move files using ssh and winscp. Jonathan Cormier
09:39 AM Software Development: RE: First base with USB, OMAP-L138F
It maybe of use to you to have the usb port act as a network device so you can send files over the network. See http... Jonathan Cormier
07:01 AM Software Development: First base with USB, OMAP-L138F
I have inherited development responsibility for a custom base board using an OMAP-L138F SoM. I need to get USB worki... Helmut Forren

12/05/2013

02:59 PM Software Development: RE: DSP software sometimes does not start
Thanks for the reply Mike - I took a look at my code and the Debug outbound is created before the inbound in the DSP ... Steven Hill
12:37 PM Software Development: RE: DSP software sometimes does not start
I suspect that you may have a race condition between the ARM and the DSP setting up inbound and outbound message Qs.
...
Michael Williamson

12/04/2013

05:41 PM Software Development: DSP software sometimes does not start
I have a strange problem with starting up some software on bootup. I have followed the instructions in this link:
[...
Steven Hill
01:46 PM Software Development: RE: Loading DSP-Code from Linux without DSPLink/DSPBios
Hello Benedikt,
As far as I know, we've really only had experience running DSP code that uses the BIOS. Have you ...
Gregory Gluszek
12:15 PM Software Development: Loading DSP-Code from Linux without DSPLink/DSPBios
Hej hej,
I have a coff-file with my DSP-Algorithm which runs perfectly when I start it via JTAG or via U-Boot. [Li...
Benedikt K.

12/03/2013

04:21 PM Software Development: RE: Read-only file system using systemd for startup
I think that's the first step. The programs that have problems should then print error messages in the boot log. Mi... Jonathan Cormier
04:19 PM Software Development: RE: Read-only file system using systemd for startup
Yes, I was going to try just updating /etc/fstab and the bootarg environment variable and see if that works...what do... Steven Hill
02:48 PM Software Development: RE: Read-only file system using systemd for startup
Stephen,
Do you have an /etc/fstab in your filesystem? Have you tried updating that file as described in step 4?
...
Bob Duke

12/02/2013

08:21 PM Software Development: Read-only file system using systemd for startup
There is a discussion of how to set up a read-only filesystem in the following link:
[http://support.criticallink.co...
Steven Hill
10:44 AM Software Development: RE: problem with spinlocks in linux kernel module
Steven,
I think the reason why you see the difference is that your PC is likely a multi-core (multi-processor), on...
Michael Williamson
09:54 AM Software Development: problem with spinlocks in linux kernel module
Hi,
I tried to run a trivial test driver pasted in below on a PC using Redhat linux and on the ARM core of the OMA...
stephan berner
12:51 AM Software Development: RE: "Regarding developing real time application"
Hi Mike,
We are planning UART from linux on arm9 cortex. Or can you suggest any feasible solution in this regard, ...
Naveen K.S

11/30/2013

07:34 AM Software Development: RE: "Regarding developing real time application"
Do you mean using a "UART from Linux":http://en.wikibooks.org/wiki/Serial_Programming/Serial_Linux? Or are you tryin... Michael Williamson
02:21 AM Software Development: "Regarding developing real time application"
Dear sir,
we are working on developing vision system, wherein we are using your mitydsp L138F SOM and Industrial I...
Naveen K.S
07:29 AM FPGA Development: RE: Driving DVI-D with Spartan6 LX45 Fpga
The issue cannot be resolved without redesigning the PCB.
If you are using an LX-45, you cannot use the DVI inte...
Michael Williamson
02:03 AM FPGA Development: Driving DVI-D with Spartan6 LX45 Fpga
From the following discussion, it is said that Spartan6 LX45 FPGA based MityDSP-L138F SOM cannot drive DVI-D on Indus... Naveen K.S

11/28/2013

07:52 AM Software Development: RE: "Regarding driving two displays using MitydspL138F vision development kit"
The DVI interface on the L138F / Industrial I/O kit is DVI-D (see "wikipedia page about DVI interface types":http://e... Michael Williamson
12:15 AM Software Development: "Regarding driving two displays using MitydspL138F vision development kit"
"
ARM9 Based Platforms - Software Development: RE: "Regarding Driving Displays in MitydspL138F Vision Devlopement Ki...
Naveen K.S

11/27/2013

08:09 PM Software Development: RE: "Regarding Driving Displays in MitydspL138F Vision Devlopement Kit"
If both the LCD display and the display connected to the DVI interface can run using the timings (e.g., same resoluti... Michael Williamson
02:15 AM Software Development: "Regarding Driving Displays in MitydspL138F Vision Devlopement Kit"
Hi sir,
Initially our requirement is to drive two displays in MitydspL138F VDK.
In Mitydsp L138F based vision d...
Naveen K.S

11/23/2013

03:34 PM FPGA Development: RE: JFFS2 driver errors
You can do it in the DSP using tcDspSyscfg::SetMasterPriority() in the dsp core library.
-Mike
Michael Williamson
01:30 PM FPGA Development: RE: JFFS2 driver errors
Thanks for those suggestions, Mike. According to Table 11-2, the default priority for EDMA is 0 (highest) and for AR... Steven Hill
08:40 AM FPGA Development: RE: JFFS2 driver errors
Hi Steven,
Is the DMA priority configured higher than the ARM data access priority in the Master Priority Configur...
Michael Williamson
 

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