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From 12/02/2013 to 12/31/2013

12/31/2013

02:07 AM Software Development: USB-OTG as a peripheral and a host
Hello,
I am using a MityDSP L138F with a custom board. This board has provision for a USB 1.1 Host and an USB 2 OTG ...
Preejith S P

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 buf...
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
 

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