Activity
From 06/30/2013 to 07/29/2013
07/29/2013
- Hello,
I am currently programming the DSP of MitydspL138 Industrial IO Board using the DSP/BIOS. I am trying to tran... - 09:41 AM Software Development: RE: DSP GPIO interrupts (No-FPGA)
- Hello again,
It works ! Invoking EventMap with an appropriate second argument solved the problem:
HWI_eventMap(6, 6... - 08:43 AM Software Development: RE: DSP GPIO interrupts (No-FPGA)
- For the DSP Event Map (item number 1), refer to table 3-1 of the TRM in section 3.2.2.1.
GPIO Bank zero event appe... - 08:02 AM Software Development: RE: DSP GPIO interrupts (No-FPGA)
- A little corrction in what I have written in my previous mail- for bank 0 offset 0 (J701 pin 25) the function call sh...
- 07:43 AM Software Development: RE: DSP GPIO interrupts (No-FPGA)
- Hello again,
First of all,thank you for your quick reply.
I am trying to implement the solution focusing on your ...
07/28/2013
- 08:19 PM Software Development: RE: DSP GPIO interrupts (No-FPGA)
- Hi,
So currently the DspGpio.cpp implementation (for non-FPGA GPIO's) for the 674X core is does not implement inte... - Hello,
I am currently programming the DSP using the DSP/BIOS . The problem I have is how to configure HWI in J701 p...
07/26/2013
- 11:33 AM Software Development: RE: Kernel bug
- Hi Mostafa,
Thank you for the notice.
I see that is in the master branch (2.6.34). We will correct it. Howeve... - Hi, just wanted to make you aware of a bug in the kernel sources:
http://support.criticallink.com/gitweb/?p=linux-...
07/24/2013
- 06:13 PM Software Development: RE: UPP "start" signal ignored in receive mode?
- Hi Stu,
Have you tried to use chipscope to confirm the alignment of the start strobe with the data as sent by the ... - 12:53 PM Software Development: RE: UPP "start" signal ignored in receive mode?
- Scott,
Yes, we're trying to send one line (of 6176 bytes) per DMA memory buffer (also 6176 bytes). The "DspUpp.c"...
07/23/2013
- 05:52 PM Software Development: RE: UPP "start" signal ignored in receive mode?
- Hi Stu,
Check section 33.2.5.3 of the TRM. For receive mode, the start line is optional, controlled by the STARTx... - 04:56 PM Software Development: RE: UPP "start" signal ignored in receive mode?
- Stu,
I'm not sure about the DSP driver for uPP, I am using a Linux driver to the Arm. Are you trying to stream data...
07/22/2013
- 03:52 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- Hi Mike, relevant definitions from the header:...
- 02:11 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- Just for sanity,
Have you confirmed you are writing to the correct AEMIF registers? CE3 is the NAND, and you are ... - 01:42 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- Hi Mike,
I've now also tried setting unused I/O to float and increasing both the TA and Read Hold to 4 cycles. I'v... - We have an FPGA application for the MityDSP-138F board which transmits "packets" to the DSP through the UPP port. Th...
- 01:25 AM Software Development: RE: Fail to mount Root FS from MicroSD card
- Ok, managed to fix the problem.
I have changed mityomapl138_mmc_get_ro() in board-mityomapl138.c to return(0) since ...
07/21/2013
- 10:19 PM Software Development: RE: Fail to mount Root FS from MicroSD card
- Hello, Tim!
Comma makes no difference, I have tried.
I have got a little progress - I have changed bootargs as ... - 07:27 AM Software Development: RE: Fail to mount Root FS from MicroSD card
- Dmitry,
I believe yhou are missing a comma in your bootargs..
root=/dev/mmcblk0p1 rw rootwait
should be
root=/dev... - Hello!
I am trying to mount Root FS from MicroSD card (ext2 formated).
Boot process fails with kernel panic.
My ...
07/18/2013
- 06:50 PM Software Development: RE: RS-485 problems
- Solved the problem myself - it turns out that either SER_RS485_RTS_ON_SEND or SER_RS485_RTS_AFTER_SEND must be define...
- 05:54 PM Software Development: RE: RS-485 problems
- OK, then it all makes sense. In spite of the way the connector is shown in the documentation I was assuming (never a...
- 05:20 PM Software Development: RE: RS-485 problems
- Actually, I take that back. The pin out is illustrated in Figure 2 of the specification....
-Mike
- 05:13 PM Software Development: RE: RS-485 problems
- Ah,
I think I may see the problem. Those connectors are pinned (on our PCB) for use with a ribbon cable and a DB-... - 05:08 PM Software Development: RE: RS-485 problems
- My board is 80-000268RI-2B, S/N 132541. I looked at the appropriate document on the page you referenced, and while i...
- 04:59 PM Software Development: RE: RS-485 problems
- Hi Steven,
Let's make sure you are referencing the correct revision information for the board (it has been updated... - 04:07 PM Software Development: RE: RS-485 problems
I am looking at pins on J504, based on the Industrial IO Board rev C documentation
Curiously, only pins 1,2,3,4,...- 03:27 PM Software Development: RE: RS-485 problems
- OK, here is what I see:
mitydsp@mitydsp-VirtualBox:~/linux-davinci$ git branch
master
* mitydsp-linux-v3.2
mi... - 03:24 PM Software Development: RE: RS-485 problems
- I am assuming it compiled OK.
Are you sure that the write() call is returning successfully? Can you send the full... - 03:22 PM Software Development: RE: RS-485 problems
- Btw press q to escape @git log@.
- 03:21 PM Software Development: RE: RS-485 problems
- Steven,
Run the command @git branch@ to see which branch is selected. It should say mitydsp-linux-v3.2. When you... - 03:18 PM Software Development: RE: RS-485 problems
- OK, I built the new kernel and flashed it to the MityDSP - now uname gives:
Linux mityomapl138 3.2.0+ #1 PREEMPT T... - 02:43 PM Software Development: RE: RS-485 problems
- Sorry - my mistake. I re-installed the toolchain and then realized that I had typed "CROSS-COMPILE" instead of "CROS...
- 02:06 PM Software Development: RE: RS-485 problems
- I seem to have the same problems - here is the output from a new shell:...
- 01:52 PM Software Development: RE: RS-485 problems
- You only use the HOST native CC, not the cross tools, to build the config file. It seems like you have a CC environm...
- 01:41 PM Software Development: RE: RS-485 problems
- I'm getting errors when I try to build the kernel:
mitydsp@mitydsp-VirtualBox:~/linux-davinci$ make ARCH=arm CROSS... - 11:26 AM Software Development: RE: RS-485 problems
- If you have our repository cloned already.......
- 11:14 AM Software Development: RE: RS-485 problems
- A newbie question - How do I build this particular branch of the kernel?
- 10:34 AM Software Development: RE: RS-485 problems
- Thanks for your response. Here is what I get from uname:
Linux mityomapl138 3.2.0 #1 PREEMPT Wed May 15 09:16:03 ED... - 12:30 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- One thought:
Is it possible the tri-state drive logic for the data lines off the FPGA is creating bus contention? ... - 12:24 PM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- Hi Mike,
Thanks for the suggestions.
Not sure I understand what you mean by FPGA access bandwidth. It is being ...
07/17/2013
- 09:17 PM Software Development: RE: RS-485 problems
- OK. I have added the patch to the mitydsp-linux-v3.2 branch. You should be able to at least see the Tx line toggle ...
- 08:55 PM Software Development: RE: RS-485 problems
- Hi Steven,
Sorry for the confusion. It's not a menuconfig item. There is a patch needed to enable the UART2 pin... - 08:32 PM Software Development: RE: RS-485 problems
- How would anyone know this? I have looked at the config of the kernel I am using and you are correct, these pins are...
- 07:05 PM Software Development: RE: RS-485 problems
- Hello,
Is is possible your kernel may not be setting up the ARM pin multiplexing for UART2? In your baseboard file... - 06:48 PM Software Development: RE: RS-485 problems
- I have attached the files defining the class and showing how I open the serial port. Then I just use standard write c...
- I am trying to get the RS-485 running on my Industrial I/O board with the L-138F. I'm using the example code in "sen...
- 07:38 AM FPGA Development: RE: EMA_WAIT and bus contention on L138F
- Hello,
How much bandwidth are you using for the FPGA accesses? Have you looked with any sort of bus analyzer (per...
07/16/2013
- We have a project which uses CS4 and CS5 to write and read data from a pair of FPGA FIFOs respectively. CS4 is used e...
07/15/2013
- 05:23 PM Software Development: RE: Simple example needed
- Thanks for the help. I decided to take a very simple approach and use mmap to access the FPGA, based on the mmap exa...
07/14/2013
- 08:22 AM Software Development: RE: Simple example needed
- Answers to questions:
1. The reserved FPGA id's are in the file: $MDK/sw/common/fpga/core_ids.h. I would use core...
07/12/2013
- 02:02 AM Software Development: RE: flash and boot utils
- Hi Mike,
I finally took the newest flash loader sources from TI (v2.40) and followed the wiki instructions (http:/... - 01:58 AM Software Development: RE: shared memory in the DSP Helloworld example
- Thanks mike. That cleared my doubts.
07/11/2013
- 09:50 AM Software Development: RE: Simple example needed
- I just thought of another question. Not being familiar with linux, I am wondering what abstraction I might be able t...
- 09:33 AM Software Development: RE: Simple example needed
- OK, I am probably going to have a lot of questions. To start with:
1. What IDs are available to use for my core?
2.... - 07:44 AM Software Development: RE: Simple example needed
- Hi Steven,
My understanding is that you have your own FPGA IP and want to control it (including catching an interr... - 07:12 AM Software Development: RE: shared memory in the DSP Helloworld example
- Hello Vinod,
The memory allocated is in the OMAP external DDR2 memory, and is actually in the DSPLINK POOL segment... - hi,
Where does the memory allocated by GetBuffer() reside? Is it in the external RAM or OMAP's internal memory? Fo...
07/10/2013
- 07:16 AM Software Development: RE: flash and boot utils
- Hi Mike,
We are using the serial flash tool to replace the preprogrammed U-Boot with an own SysBios based loader app... - 07:01 AM Software Development: RE: flash and boot utils
- Hello,
Are you using the serial flash tool instead of u-Boot to program application images?
Are you rebuilding ... - Hello,
I rebuilt the SPI serial flash tool (sfh_OMAP-L138.exe) from the MDK_2013_05_15 sources. Therefor I changed...
07/09/2013
- 10:46 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
- Hi,
I am using a nondescript USB to RS232 cable, dmesg tells me its a FTDI USB-RS232 cable, with a FT232RL onboard... - 09:55 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
- Chris,
Glad to hear of your success... if you don't mind, can you detail your setup a bit. Are you using a USB seria... - 09:50 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
- Hi,
I finally got it working by directly connecting the serial port to the board.
Thanks for the help,
Chris. - 09:15 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
- Hi,
Swapping up the cables sees to make no difference, and if I plug in my work PC into the supplied cross over ca...
07/08/2013
- 09:09 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
- Chris,
Have you tried to add another null modem adapter into the mix or a straight-thru cable just as a sanity che... - 06:54 AM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
- Hi Bob,
I have been trying with both screen and putty.
Both seem to work fine when I loopback the tx and rx lin...
07/07/2013
- 09:47 PM Software Development: RE: MItyDSP L138-FI-236-RL Industrial IO Board 80-000268RI-2 rev. B, wont reset and no output on serial port.
- Hello Christopher,
What terminal program are you using to connect to the serial port on your PC?
-Bob
07/05/2013
- I am trying to load the hello world program.
So I set up the serial port on my pc with the following settings:
...
07/02/2013
- 04:18 PM Software Development: RE: Simple example needed
- Yes, I'm looking for an example similar to the Hello World ARM/DSP project...
- 03:32 PM Software Development: RE: Simple example needed
- Is your ARM processor going to run linux?
- I am using the MityDSP L-138F Industrial development board. I am not finding the examples for that board given in th...
- 10:51 AM FPGA Development: RE: Hardware Reset
- On the MityDSP-L138F, RESET_IN pin is fed into a TPS3808G33DBVR reset monitor circuit. It is not connected to the FP...
- 10:06 AM FPGA Development: RE: Hardware Reset
- Hi Mike,
In effect yes. I was wondering if the device/circuit which drives the reset pin of the OMAP processor is ...
07/01/2013
- 07:49 PM FPGA Development: RE: Hardware Reset
- When there is a power on reset, the FPGA will be re-initialized (the program pin is pulled low) and will require repr...
- Hi There,
Is there a pin on the MityDSP-L138F processor board FPGA which is attached to a
dedicated power-on/har...
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