Recent Posts

1

TCB Talk / Re: cannot boot from USB

« Last post by user233 on Today at 02:38:22 PM »

Hello,
NewUser thanks for the advice, I used diskpart and it worked like a charm.
Rich it seems your right, I can run TC13x86_64 sorry for all the problems, I don't kno why searched so long.
I thought a 64 arch could run a 32 OS, am I wrong ?

2

General TC Talk / Re: Enforcing 80 conductor IDE

« Last post by MTCAT on Today at 11:08:56 AM »

Hi curaga,

Thanks, I am indeed using extlinux.cfg to pass in boot codes like waitusb=5 (thanks Rich), etc., I'll try adding in "libata.force=80c" and see what happens, sorry about missing the dot in the last post.

The mt_logger program does have an option for file compression but it "only" reduces the (binary) file size by ~ 30 percent, but you're right, might need to do that as well.

Thanks,

David

3

General TC Talk / Re: Enforcing 80 conductor IDE

« Last post by curaga on Today at 10:26:03 AM »

You can pass the params on your bootloader line easily, "libata.force=80c" (note the dot) in extlinux.cfg if you're using that.

Have you considered using compression to write less data? Something very simple that does not take much cpu.

4

General TC Talk / Re: LVDS Display Problems

« Last post by MTCAT on Today at 06:26:52 AM »

Hi everyone, just an update, sorry for the slow reply, WinSystems shipped a PixelQi display to the manufacturer in Taiwan (DMP) where they made a custom BIOS for my screen! Talk about great service, everything works good now using 1024x600x18 in ~\.xsession with the custom LVDS cable driving the screen directly from the LVDS port of the PPM-C412, saves about 1.3W by not having to use the VGA to LVDS adapter board.

Thanks,

David

5

General TC Talk / Enforcing 80 conductor IDE

« Last post by MTCAT on Today at 05:43:55 AM »

Hi everyone,

I've made some good progress getting my little VortexDX3/24DSI12 data acquisition system to run reliably for days, I found that using the "taskset" command to force one application (mt_logger) to run on one core, all the GUI stuff basically, and the other application (mt_adc) to run on the other core, helped a lot. Before using taskset the two applications would flip-flop back and forth across the cores and seemed to be contributing to the "mt_adc timeout error" (presumably due to buffer overflow) that I was seeing, my current record is a continuous run time of 39 hrs (with taskset), I had to turn it off before the big battery died.

Anyway, another factor (it seems) are the file sizes getting written out to the CF card, for the 39 hr run I had to turn down the (decimated) continuous file sample rate to 1 kHz such that the continuous files saved to disk were ~ 1.37 MBytes, with larger file sizes, 5 or 20 times larger, the program has run for "only" 19 hrs and 10 hrs respectively....

The VortexDX3 is also working hard to draw the screen updates (~ 30 % load on one core in top) but another factor (I think) are the file sizes, and finally the write speed I'm getting.

Right now my kernel (2.6.33.3) is limiting the write speed to the CF card to UDMA/33, I would like to increase this to UDMA/66 or UDMA/100 since the CF-card can definitely handle these speeds, hopefully the controller can too.

I've read some posts on other forums about setting an option in /etc/modprobe.conf --> options ide_core ignore_cable=0, but then also had to rebuild the initrd image?

Other post indicated you could use something like (in extlinux.conf??) --> libata force=80c

Just wondering if anyone has done this before (over-rode the kernel enforced UDMA/33) and if they might know the best way to go about doing it.

Thanks,

David

6

Raspberry Pi / Re: Use the last linux kernel on piCore arm64

« Last post by elcouz on Today at 03:33:59 AM »

lol.  I used to maintain a RT kernel, for the RPI, but it became too much work.   If keeping up with the patches was not enough, there were too many opinions as to how to configure the kernel.

Oh well, not a big deal. piCore is already nice on its own. Keep up the good work guys!

For the T2UH there seems to be decent stock in Germany on Ebay, new ones for 12.60 eur/pc, but they don't ship to Canada. If you have someone in Europe who could forward it, it may work out well even with importing taxes etc. I don't know if forwarding services exist for EU, could be, I've just heard about US and Japan for those.

Thanks, I am evaluating the best option with the network team, that is , to install wiring in that area.

7

Raspberry Pi / Re: Use the last linux kernel on piCore arm64

« Last post by curaga on March 29, 2023, 10:55:59 PM »

For the T2UH there seems to be decent stock in Germany on Ebay, new ones for 12.60 eur/pc, but they don't ship to Canada. If you have someone in Europe who could forward it, it may work out well even with importing taxes etc. I don't know if forwarding services exist for EU, could be, I've just heard about US and Japan for those.

8

Raspberry Pi / Re: Use the last linux kernel on piCore arm64

« Last post by curaga on March 29, 2023, 10:43:45 PM »

That one is a Realtek, according to the wikidev link above?

9

TCB Talk / Re: question about sudoers when run "sudo su"

« Last post by aus9 on March 29, 2023, 08:09:00 PM »

Hi

I am not sure by "user" you mean "you" or another user sharing your PC

until you get a better answer....

Code: [Select]

sudo sudoes not need a password set and will then allow you to run multiple root commands.

If you need a root password set.....such as setting up a printer then try, for this session,

Code: [Select]

sudo passwd
input your password, press enter and re-input.

this password is not saved unless you choose to backup your changes.

2) cups does not care what password you used when you first set a password, 2 weeks later,
if you have to make a change to printer that needs root password,  create a new password.

Hope that helps

10

TCB Talk / Re: how to exec a script when reboot system

« Last post by lovelypp on March 29, 2023, 06:19:29 PM »

thanks