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

02/25/2014

07:34 AM Software Development: RE: I2C Bus

Thanks for the swift response. That is exactly the info I've been looking for.
I have attached some waveforms. The... Ed Smith

06:59 AM Software Development: RE: I2C Bus

The PMIC is TPS65023RSBT. The PROM is 24AA02-I/MS. Pins 1, 2, and 3, of the PROM are no-connects.
The I2C0_SCL a... Michael Williamson

06:24 AM Software Development: RE: I2C Bus

I'm working with Bruce on this issue. It would be really helpful to have the part numbers of the other devices, parti... Ed Smith

07:02 AM Software Development: RE: DSP- EDMA Transmission problem

Is the first DMA completing before calling the second?
Michael Williamson

05:04 AM Software Development: RE: DSP- EDMA Transmission problem

Hello again,
It appears that now the different problem occurs. When the DMA transmission is invoked twice or thrice,... Rafał Krawczyk

02/24/2014

07:38 AM Software Development: RE: DSP- EDMA Transmission problem

Excellent! Glad it is now working!
Dave
David Rice

07:15 AM Software Development: RE: DSP- EDMA Transmission problem

Hello David,
Sorry for the latency-I corrected the code due to your suggestions and it worked- thank you.
Best Regards Rafał Krawczyk

02/23/2014

08:08 AM Software Development: EMIF Clock in U-Boot

Hej hej,
I would like to change the EMIF-Clock from 100 MHz to 25 MHz for a MityDSP L138-Module. I searched the u-... Benedikt K.

02/19/2014

08:15 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

We leave it at 300 Mhz Marc Postema

08:08 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

When you boot linux, are you changing the CPU OPP to 456 MHz or leaving it at 300 MHz? Michael Williamson

08:03 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

Hello,
Yes we have adjusted the bus master priority of uPP, but did not see any great improvements (strangely).
... Marc Postema

07:42 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

Did you check / adjust your UPP Bus master priorities? Michael Williamson

07:33 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

Hello,
Just a quick update. When we do not boot into linux (just uboot) we do not see
these errors.
So booting... Marc Postema

02/18/2014

08:50 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

Hi Marc,
Here are a couple of other things to consider:
# In the past we've had throughput problems with TI's ... Gregory Gluszek

08:22 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

You might raise the priority up a bit (try 0 or 1). If the transfers are small, then it should be OK to give it prio... Michael Williamson

08:04 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

Hello,
Here are some answers to the questions:
* Are you trying to run continuous transfers?
- We do not r... Marc Postema

07:17 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

Hi Marc,
Are you trying to run continuous transfers?
At 75 Mhz, you should be running a buffer rep rate of 64 /... Michael Williamson

02:55 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

Hello,
Here are some answers to the questions:
* Are you using the Critical Link MDK drivers? If so, what versi... Marc Postema

07:22 AM Software Development: RE: I2C Bus

Hi Bruce,
I believe that the I2C addresses for I2C0 are described in the "Carrier Board Design Guide":http://www.c... Michael Williamson

06:05 AM Software Development: I2C Bus

We are currently investigating a problem accessing the I2C0 bus.
My initial enquiry is to find out what devices ... Bruce Kenny

02/17/2014

09:25 AM Software Development: RE: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

Hi Marc,
If you are following the uPP design guidelines, then perhaps this is a true underflow or overflow condit... Gregory Gluszek

06:05 AM Software Development: Why is MityDSP-L138F UPP transmit sometimes giving UOR events

Hello,
We use the MityDSP-L138F and between DSP and FPGA we use UPP communication but transmit (channel A) is givi... Marc Postema

02/10/2014

02:57 PM Software Development: RE: "Using TI C64x+ IMGLIB on OMAPL138F"

Hello Naveen,
As you stated, the vision_framework demo uses the IMG_sobel_3x3_16(), which you can use to understan... Bob Duke

09:20 AM Software Development: RE: How to reserve EDMA for DSP

I tried modifying device-da8xx.c as describe above, but the boot process hung. Here's the relevant part of the log:
... Mary Frantz

02/06/2014

03:21 PM Software Development: RE: How to reserve EDMA for DSP

Mary,
I think you can disable the dma usage of the spi driver. I am using the following resource declaration for ... Jonathan Cormier

11:03 AM Software Development: RE: How to reserve EDMA for DSP

In researching this I found what looks like a similar problem:
http://e2e.ti.com/support/dsp/omap_applications_pro... Mary Frantz

03:06 PM Software Development: Build Error when using Yocto

I am attempting to run this command to compile the kernel:
bitbake virtual/bootloader
And get the following err... Julio Liriano

02/05/2014

11:04 AM FPGA Development: I2C SMBus development

Hi All,
I can see here (http://support.criticallink.com/rm_embedded/dsp-products/MDK_DOCS/2.11/core/class_mity_d_s... Angelos Spanos

11:01 AM Software Development: RE: Latest stable linux build for MityARM-1808/F

Thanks Mike,
That did the works for me.
Cheers,
Angelos Angelos Spanos

06:49 AM Software Development: RE: USB-OTG as a peripheral and a host

Hello Jonathan and Mike,
Thank you for your quick replies.
@Mike
Thank you for your suggestion. I could use it... Preejith S P

05:05 AM Software Development: "Regarding MitydspL138F Vision development kit"

Hi,
We have received your Vision Development Kit from Digikey distributor this week. As per your VDK manual we int... Naveen K.S

02/04/2014

01:50 PM Software Development: RE: Accessing SPI1 bus

Mary,
You can search the kernel source for the messages by using grep. For example I might search for the string ... Jonathan Cormier

01:18 PM Software Development: RE: Accessing SPI1 bus

I have successfully added the SPIDEV support to the kernel and can communicate over the bus now.
I occasionally se... Mary Frantz

01:07 PM Software Development: How to reserve EDMA for DSP

I am having an ARM/DSP conflict. The DSP is primarily reading data from the McBSP and transferring the data to a cir... Mary Frantz

12:39 PM Software Development: RE: Latest stable linux build for MityARM-1808/F

In the "file tab":https://support.criticallink.com/redmine/projects/arm9-platforms/files there are MDK downloads (.ru... Michael Williamson

12:35 PM Software Development: Latest stable linux build for MityARM-1808/F

Hi All,
Could you please tell me what is the Latest stable linux build for MityARM-1808/F? Could you also provide ... Angelos Spanos

08:53 AM Software Development: RE: USB-OTG as a peripheral and a host

Probably the best solution would be to load in the USB OTG file storage gadget. This will make the L138 look like a ... Michael Williamson

08:33 AM Software Development: RE: USB-OTG as a peripheral and a host

Unfortunately I don't have any experience with interfacing with Android phones. If your Android phone supports rndis... Jonathan Cormier

05:14 AM Software Development: RE: USB-OTG as a peripheral and a host

Hello,
I have used RNDIS and have been able to transfer data.
However, I would also like to know how to use eithe... Preejith S P

02/03/2014

11:43 AM Software Development: multicast routing on mity board

Hi,
I need to set up multicast routing between two interfaces on the mity board running Angstrom linux 2.6.34
... stephan berner

01/31/2014

05:14 AM Software Development: RE: "Regarding handling UART on MitydspL138F(OMAPL138)"

Hi,
We are trying to interface Second UART (J504 as you mentioned) with Atmel AtXmega Controller so that upon rece... Naveen K.S

01/30/2014

02:22 PM Software Development: RE: "Regarding handling UART on MitydspL138F(OMAPL138)"

Naveen,
The first UART is used for the debug/console port, UART1.
You would like to use the second UART in your... Alexander Block

01:17 PM Software Development: RE: "Reagrding spi NOR flash memory updating"

Naveen,
I'm assuming that the question here is how would you get the updated Kernel from your host PC onto the Mit... Alexander Block