Activity
From 02/12/2013 to 03/13/2013
03/13/2013
- JC 04:06 PM Software Development: RE: Creating a Read-Only Filesystem
- > rm: cannot remove '/etc/volatile.cache': Read-only file system
> ...
Udev happens before the tmpfs entries get mounted from the fstab file. - JC 03:56 PM Software Development: RE: Creating a Read-Only Filesystem
- Your fstab entry doesn't have auto in the options list so it isn't auto mounted on startup. You should probably use the defaults and then override the options you want changed.
*defaults* Uses the default options that are rw, suid, d... - MF 01:20 PM Software Development: RE: SPI NOR Flash memory map
- This probably doesn't completely answer your question, but may be helpful. There is some "spare" memory on the SPI NOR flash.
On your target try: - MW 10:59 AM Software Development: RE: MDK_2012-08-10 default configuration
- What PHY address does your custom baseboard use?
-Mike
- Hi,
I am working on bringing up a custom base board for a MityDSP-L138.
Most things seem to work fine using the version of Linux installed on the MityDsp-L138 board out of the box. However, I need to reconfigure the kernel a bit to re...
03/12/2013
- LA 02:59 PM Software Development: RE: FPGA Memory Size
- You are correct we are looking at cs5 as well.
32k would probably be sufficient. We typically prefer to provide the information in a flat manner to offload the CPU from parsing, or having to copy out all the information instead of the... - JT 01:52 PM Software Development: RE: Creating a Read-Only Filesystem
- I had used -
mount -t jffs2 /dev/mtdblock1 /mnt/user_nand
and just -
mount /mnt/user_nand
also works.
- JC 01:42 PM Software Development: RE: Creating a Read-Only Filesystem
- "I can manually mount /mnt/user_nand and access that partition"
Whats the full command you use to manually mount your partition? Does @mount /mnt/user_nand@ work? - Hi,
We use the MityDSP-L138 in a factory automation product and need to prevent fs corruption from random shutdowns. My first attempt was to change the rootfs to read-only in a startup script, but it would be safer if the rootfs was rea... - JC 08:32 AM Software Development: RE: SPI NOR Flash memory map
- This appears to be what your looking for.
[[MityDSP-L138_Architecture]]
Also can be determined by looking at the uboot environment variables. The erase commands give the starting address and the max size expected for each image.
@
... - (posted for a customer)
We are looking at using the SPI flash and/or NOR flash for storing our software on the L138 SOM. We are currently using uBoot and the exisiting boot code on the board so we do not want to overwrite these.
...
03/11/2013
- MW 07:58 PM Software Development: RE: FPGA Memory Size
- As mentioned on the "EMIFA wiki page":http://support.criticallink.com/redmine/projects/arm9-platforms/wiki/EMIF_Interface, all of our FPGA fabric and drivers use CE5 space (0x66000000), for the ARM or the DSP (where did you find informat...
- The standard FPGA memory available to the arm processor within angstrom is currently limited to 2k.
From what we can gather there are many places that could work together to create this limit:
Flash code
uBoot
FPGA vhdl
Linux dr... - MC 12:49 PM FPGA Development: RE: SPI Core on FPGA: Implementation on MityDSP-L138F
- Dear all,
I'm trying to understand the behaviour of your SPI core on FPGA with hooked FIFO and wondering how to connect it to a PulSAR ADC (for example AD7980) from Analog Devices, hopefully, on SW side, using your tcDspFpgaSpi Class in...
03/06/2013
- MF 01:56 PM Software Development: RE: How to register hostname with DNS?
- I modified /etc/network/interfaces as described:
- JC 10:27 AM Software Development: RE: How to register hostname with DNS?
- http://www.turnkeylinux.org/forum/support/20090212/register-hostname-dns
This post suggests setting hostname in /etc/network/interfaces file.
03/05/2013
- MF 01:48 PM Software Development: RE: How to register hostname with DNS?
- The answer there was:
- JC 11:34 AM Software Development: RE: How to register hostname with DNS?
- This might be what your looking for.
http://www.linuxquestions.org/questions/linux-networking-3/dns-registration-on-internal-network-284556/ - I would like to use DHCP for ip address assignment, set my own hostname and register it with DNS.
So, far I can get an IP address just fine. I see that the hostname is in /etc/hostname (currently set to mityomapl138). Presumably I c... - MF 11:36 AM Software Development: RE: How to get system time?
- Stumbled across this:
#include <time.h> references /usr/local/oeore-i686/sysroots/armv5te-angstrom-linux-gnueabi/usr/include/time.h
which includes another file:
#include <bits/time.h>
which references
/usr/include/bits/time.h
...
02/27/2013
- JC 02:33 PM Software Development: RE: How to get system time?
- This stack overflow article seems to point to an eclipse bug and possible fix.
http://stackoverflow.com/questions/8881617/constants-not-loaded-by-compiler - JC 02:11 PM Software Development: RE: How to get system time?
- At least that file has the CLOCK_MONOTONIC in it but doesn't have clock_gettime...
- JC 01:56 PM Software Development: RE: How to get system time?
- Looks like you want linux/time.h located at /usr/local/oeore-i686/sysroots/armv5te-angstrom-linux-gnueabi/usr/include/linux/time.h
- MF 01:53 PM Software Development: RE: How to get system time?
- Where is the correct time.h file? There seem to be alot of them in various include directories.
#include <time.h>
if I right click then select "Open Declaration" it opens:
/usr/local/oeore-i686/sysroots/armv5te-angstrom-linux-gnue... - JC 01:21 PM Software Development: RE: How to get system time?
- And here is a discussion of CLOCK_REALTIME VS CLOCK_MONOTONIC.
http://stackoverflow.com/questions/3523442/difference-between-clock-realtime-and-clock-monotonic - DG 01:19 PM Software Development: RE: How to get system time?
- Not sure why it's not finding CLOCK_MONOTONIC, it's defined in time.h:
45 * The IDs of the various system clocks (for POSIX.1b interval timers):
46 */
47 #define CLOCK_REALTIME 0
48 #define CLOCK_MONOTONIC ... - MF 01:01 PM Software Development: RE: How to get system time?
- Thanks,
I added rt to the project Properties->C/C++ Build -> Settings -> Cross G++ Linker -> Libraries
I had already included time.h
It compiled if I set the first parameter of clock_gettime() to 0, but I still can't reference CLO... - DG 12:39 PM Software Development: RE: How to get system time?
- Hi Mary,
Be sure you are linking to the rt library which implements that call (as well as including the time.h header). Use -lrt as a linker argument to do this. - MW 12:34 PM Software Development: RE: How to get system time?
- Did you include <time.h> in your code?
- How do you get the system time in order to timestamp events?
Tried clock_gettime() but got a linker error: "undefined reference to `clock_gettime' "
There was also no reference for CLOCK_REALTIME, or CLOCK_MONOTONIC.
I would lik... - CO 08:01 AM FPGA Development: RE: I2C issues on SLX45
- Patched file is:
MDK/sw/ARM/linux/drivers/fpga/fpga_i2c.c
attached... - CO 07:56 AM FPGA Development: RE: I2C issues on SLX45
- Wow, this is a while ago. If I remember correctly the FPGA i2c driver functioned correctly after Mike's changes but, in my opinion, it was a little unoptimised. But that was for my specific app which wanted to push a lot of data across i...
- MC 06:40 AM FPGA Development: RE: I2C issues on SLX45
- Hello All,
Can you please tell me if your patch about I2C FPGA linux driver is available and working?
If yes, can you please provide a sort of explaination about the exact steps to apply it to the MDK_2012-08-10 release?
Have you su...
02/25/2013
- RT 10:00 AM FPGA Development: RE: Programming FPGA on power up.
- Got it sorted now, just noticed the loadaddr was incorrect
- RT 09:09 AM FPGA Development: RE: Programming FPGA on power up.
- Hi
I am running MityDSP Development kit Module L138-FI-225-RC.
-Rex - MW 09:05 AM FPGA Development: RE: Programming FPGA on power up.
- Not seeing anything obvious. For the load process, I believe you need to specify an image size larger than the filesize (need to doublecheck this for parallel loading, but I know is true for serial loading) as the configuration process ...
- Hello
We have been trying to save our .bin file to flash and load the FPGA on power up of our MityDSP.
Our board details are:-
U-Boot > factoryconfig
Factory Configuration:
Config Version : 1.1
MAC Address : 00:50:C2:E6:76:7...
02/21/2013
- MF 01:38 PM Software Development: RE: How to specify port in client/server application
- I knew there was a simple answer. Thanks!
Here's the updated code, which compiles.
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <netinet/ip.h>
#in... - MW 12:39 PM Software Development: RE: How to specify port in client/server application
- Hi Mary,
sockaddr_in is most certainly supported by the compiler. We use it all the time. The man page suggests you need a couple of additional headers, from the man page you need:
#include <sys/socket.h>
#include <netinet/in.h>
... - MF 12:17 PM Software Development: RE: How to specify port in client/server application
- Yes, I was just reading that. They use slightly different elements:
struct sockaddr_in serv_addr, cli_addr;
portno = atoi(argv[1]);
serv_addr.sin_family = AF_INET;
serv_addr.sin_addr.s_addr = INADDR_ANY;
... - TI 11:44 AM Software Development: RE: How to specify port in client/server application
- here's a pretty decent tutorial on linux sockets...
http://www.linuxhowtos.org/C_C++/socket.htm
- Hello,
I am running Linux on the ARM and DSP/BIOS on the DSP. I need to implement a client and server on a particular port on the ARM side. I am using MDK_2012-08-10.
How do you specify the port to listen on or connect to? There...
02/14/2013
- How do you configure / customize the tool chain to the mitydsp board? eg the current version of gnu compiler for the board is 4.3.3. How is it targeted to the mityboars?
I need to configure the 4.7.2 version for the mity board. When a s... - JY 10:53 AM Software Development: RE: Trouble with writing to UART2
- Thank You for your help, Ultimately I need to use this on the PRU and I saw how TI is doing it through there Profibus utilities module. They set up the pin mux to have PRU0 R30[16] toggle the enable line. This seems to be the most effici...
- MW 10:49 AM Software Development: RE: CLK frequency increase using DSP only
- Check the Datasheet for the speed grade for the L138-FI-225-RC, though I think the F means CPU speed up to 456 MHz. The OMAP-L138 datasheet specifies all of the maximum operating frequencies for the clock domains within the part. The l...
- MW 10:46 AM Software Development: RE: CLK frequency increase using DSP only
- OSCin is 24 MHz. It's fixed by the crystal on the part.
The documentation you would need to read is for the "TPS65023 PMIC":http://www.ti.com/product/tps65023&lpos=Middle_Container&lid=Alternative_Devices from TI. These I2C commands... - RT 10:41 AM Software Development: RE: CLK frequency increase using DSP only
- Hi, I too would like to increase the running speed towards 456MHz. I have managed to change the speed as per your instructions. and would like to have some further information.
Is there any documentation to explain the following
i2c ...
02/13/2013
- MW 07:23 PM Software Development: RE: Trouble with writing to UART2
- You need to use the TIOCRS485 ioctl on the serial port file descriptor with the serial_rs485 structure.
It involves writing a bit of code. You can't do it with any shell tools that I am aware of.
See the example code in the rs485_... - JY 07:08 PM Software Development: RE: Trouble with writing to UART2
- Additionally, it appears the pin muxing was set up such that the GP0[9] was not selected due to AMUTE being selected by the mcasp initialization. If i disable the mcasp initialization in the kernel build GP0[9] is mapped to the rs485 ena...
- JY 06:41 PM Software Development: RE: Trouble with writing to UART2
- I am using the 2.6.34 kernel and it appears it already has the patch applied. I was able to get it to work by reassigning the pins and manually applying the RTS line. With the original configuration, am I supposed to toggle the GPO pin m...
- MW 03:06 PM Software Development: RE: Trouble with writing to UART2
- Hi Jeremy / Tim,
The link Tim pointed you to is for the MityARM-335x, not the MityARM-180x, though a similar patch exists for that as well for the RS-485 drivers.
Sorry for the confusion.
The patch you need is "here":http://su... - TI 03:00 PM Software Development: RE: Trouble with writing to UART2
- Jeremy
The RS485 board has an enable that must be managed. I believe you need a newer version of the driver to control it.
Support for the RS-485 board was added in commit 3e1a3878bbe545b7d4a2ab65023a9938b0d5984e
dated 2012-12-11
see... - I am having some difficulty with writing to the UART2 on the AM1810. I have everything setup such that I can read from the port with out any problems. When I run the command cat /proc/tty/driver/serial I am able to see the Tx count incre...
02/12/2013
- MW 05:35 PM Software Development: RE: U-Boot Source Code
- Hi Terrence,
To confirm: are you looking for u-Boot code, or the User Boot Loader (UBL) code?
As Jonathan and Alex indicate, u-Boot is availble from GIT. The MDK should include a copy of the UBL project, which I believe was compil... - AB 05:00 PM Software Development: RE: U-Boot Source Code
- Terrence,
The U-Boot source code is maintained in a GIT repository and not wholly contained in the MDK however a seed version of the GIT repository is included but you should update it to the latest.
Considerable information is on ... - JC 04:34 PM Software Development: RE: U-Boot Source Code
- Also the git repository can be explored here. http://support.criticallink.com/gitweb/?p=u-boot-mitydspl138.git;a=summary
U-boot wiki page: [[Das_U-Boot_Port]] - JC 04:31 PM Software Development: RE: U-Boot Source Code
- Have you checked the sw/ARM directory in the MDK?
-Jonathan - Does anyone know where I can find the U-Boot (UBL version 1.65:2.28) source code? Does the UBL source come bundled with the MDK? I am using MDK-2011-12-05.
- SP 10:12 AM Software Development: RE: Ethernet packet loss
- Hi Mike,
We are using your L138-FG-225-RC in combination with a propriatary base (=industrial IO) board --> MII is connected and used.
Stéphane - MW 10:07 AM Software Development: RE: Ethernet packet loss
- Are you using a custom board? Are you using the MII or the RMII port? If RMII, what device is sourcing the reference clock?
-Mike
- SP 09:35 AM Software Development: RE: Ethernet packet loss
- Hi Mike,
It’s not a u-Boot/Linux problem.
We are running SysBios on the ARM after leaving ROM code…
Best regards
Stéphane
- MW 07:13 AM Software Development: RE: Ethernet packet loss
- Hello,
I looked at your E2E post, and I think I *may* understand the problem, but I am not sure.
By changing the frequency in the bootloader and not in the kernel, I'm not sure if the kernel is initializing with the right idea of w...