Activity
From 11/30/2013 to 12/29/2013
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...
- Hello,
I am having the following problem:
I am invoking an EDMA transfer in my DSP-side application. To do so, I di...
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... - Hello sir,
Thank you for replying my previous queries.
We are using MitydspL138F VDK for developing prototype, ...
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) ...
- 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.... - 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...
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 "... - 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... - 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...
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
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... - 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 ... - 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,... - 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"... - 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...
- 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...
- 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... - 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...
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... - 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.
... - 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
...
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... - 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... - 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...
- 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.
- 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...
- I have inherited development responsibility for a custom base board using an OMAP-L138F SoM. I need to get USB worki...
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 ...
- 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.
...
12/04/2013
- I have a strange problem with starting up some software on bootup. I have followed the instructions in this link:
[... - 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 ... - 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...
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...
- 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...
- 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?
...
12/02/2013
- There is a discussion of how to set up a read-only filesystem in the following link:
[http://support.criticallink.co... - 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... - 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... - 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, ...
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...
- Dear sir,
we are working on developing vision system, wherein we are using your mitydsp L138F SOM and Industrial I... - 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... - From the following discussion, it is said that Spartan6 LX45 FPGA based MityDSP-L138F SOM cannot drive DVI-D on Indus...
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