Mity CPU Platforms » MityDSP-L138 (ARM9 Based Platforms)

01/02/2014

08:14 AM Software Development: RE: Regarding handling UART of MitydspL138 F

Which UART are you after? Which processor core would you like to use with it? Michael Williamson

12:54 AM Software Development: Regarding handling UART of MitydspL138 F

Dear sir,
It is given in MitydspL138F VDK datasheet that already UART driver is available in Kernel image. Can you... Naveen K.S

08:12 AM Software Development: RE: USB-OTG as a peripheral and a host

Hello,
It looks like you have selected the "gadget zero" device as your peripheral device. This is a USB test dev... Michael Williamson

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 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.