Search found 11 matches

by bftrock
24 Aug 2019, 14:07
Forum: Software
Topic: Kernel error related to PREEMPT
Replies: 1
Views: 3331

Re: Kernel error related to PREEMPT

Update: I found a bug in my app that was causing a loop to run as fast as it could and therefore consuming most of the CPU time. Since I've corrected this bug, I've not seen this problem. There may still be some bug or vulnerability in some part of the system, but for now I am avoiding it.
by bftrock
21 Aug 2019, 14:49
Forum: Software
Topic: Kernel error related to PREEMPT
Replies: 1
Views: 3331

Kernel error related to PREEMPT

I'm running a Python3 program on the RevPi Core3. After running for hours, my program apparently stops running, and the following is printed to the console (via SSH). I see similar content in kernel.log. I updated my system using apt-get update then upgrade, but this didn't help. I have no idea how ...
by bftrock
21 Aug 2019, 14:41
Forum: Software
Topic: Revolution Pi support for OPC DA
Replies: 1
Views: 2606

Re: Revolution Pi support for OPC DA

I suspect the answer is no since OPC DA relies on Windows COM/DCOM technology and this is a Linux system. There are other flavors of OPC (OPC XML DA and OPC UA) that are capable of running on non-Windows systems.
by bftrock
19 Jul 2018, 12:21
Forum: Software
Topic: Root login no longer works after installing Jessie
Replies: 1
Views: 3555

Root login no longer works after installing Jessie

I wanted to reinstall the OS to have a clean system. I followed the documentation for installing Jessie , and everything went as expected (after I upgraded from Win7 to Win10). I am able to log in to the web interface and pictory with the credentials provided on the sticker on the RevPi Core 3. Howe...
by bftrock
18 Jul 2018, 13:13
Forum: Software
Topic: Instructions for Installing Jessie from a Linux Host
Replies: 2
Views: 5853

Re: Instructions for Installing Jessie from a Linux Host

I wasn't able to find the git repository at that URL, or in GitHub using the search tool. Could somebody please clarify the location of this tool?

Thanks,
Brendan
by bftrock
11 Jul 2018, 14:42
Forum: RevPiModIO
Topic: Watchdog for digital outputs
Replies: 5
Views: 7004

Re: Watchdog for digital outputs

Thanks for your prompt reply. I am looking for a system watchdog that will turn off the digital outputs if my app crashes. It looks like the RevPi Connect is a new CPU option, right? I didn't see it in the Shop section of the web site, so I'm guessing it's still under development? I did find a Quick...
by bftrock
11 Jul 2018, 13:15
Forum: RevPiModIO
Topic: Watchdog for digital outputs
Replies: 5
Views: 7004

Watchdog for digital outputs

Hello, According to the RevPi documentation, the DIO module uses a watchdog which turns off the digital outputs after a short timeout after the last update from the CPU. To test this, I wrote this simple Python 3 program which toggles a digital output on and off, then leaves it on when the program e...
by bftrock
08 Jun 2018, 19:31
Forum: Hardware
Topic: Ethernet stops working after connecting USB-serial device
Replies: 3
Views: 4781

Re: Ethernet stops working after connecting USB-serial device

Thank you for your reply. I'm not sure why, but this issue seemed to resolve itself. So it looks like there was no hardware damage.
by bftrock
25 May 2018, 18:43
Forum: Hardware
Topic: Ethernet stops working after connecting USB-serial device
Replies: 3
Views: 4781

Ethernet stops working after connecting USB-serial device

For some reason I can no longer communicate with my RevPi Core 3 after connecting a USB-serial converter device and rebooting. I can't connect with SSH, nor with WinSCP, and it doesn't respond to ping. I'm using a DHCP reservation so I'm certain of the IP address. Is there any hardware reason for th...
by bftrock
23 May 2018, 20:54
Forum: Software
Topic: PiCtory configuration not loading
Replies: 5
Views: 15827

PiCtory configuration not loading

This post is to document a problem I ran into as well as the solution I found. I'm running a setup with these devices: (wepi) pi@RevPi6892:~ $ piTest -d Found 3 devices: Address: 0 module type: 95 (0x5f) RevPi Core V1.2 Module is present input offset: 0 length: 6 output offset: 6 length: 5 Address: ...