I’m looking for a few pointers and here is what I’m wanting to do in a nutshell: July 08, , That is what device drivers are for. The choice for the directory and file names are up to you, I just made these up for the description. Tuftec Full Member Posts: Second is to de-bounce your switches so you don’t get relay chatter.
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VIA VT1211 Free Driver Download (Official)
The sleep command serves two purposes, first is so that it does not use excessive CPU time. That is what device drivers are for. Second is to de-bounce your switches so you don’t get relay chatter. You of course need to know a little about your hardware and how to drive it. The switches will be part of the HMI to allow control of vai relays and software functions without the need of issuing vai on the computer’s console.
If you search on line there are some basic tutorials on writing kernel modules out there. July 08, Did you miss your activation email?
Please login or register. Using the RT kernel is a little messier but it all seems to work.
VIA drivers for chipset, IrDA and card reader and Microsoft Windows
The LEDs are going to be used for display purposes; to show whether a mechanical device is supposed to be running or not, vt12111 stop or run of a mechanical or software process, etc. If you are happy to use the standard kernel and not that concerned about running as root then the code is reasonably straightforward.
You need to have su root permissions.
One more thing, be sure to use isolation resistors between the output port and your relay drivers. The choice for the directory and file names are up to you, I just made these up for the description.
If one is not included in the kernel or as a module, you need to write one. Home Help Login Register. The driver would basically 1. You should also take a peek at vt Tuftec Full Member Posts: Greetings all, I’m new to hardware programming. You don’t want vka be scratching your head wondering why bits appear to occasionally flip unexpectedly.
Do NOT try to de-bounce the switches by hanging capacitors across the contacts, and make sure your pullup resistors are returned to the same voltage the IO chip is running at. If you are not too concerned about Linux vtt1211 and you just need to get soething going in a hurry, you can write directly to the machine hardware.
Making use of GPIO pins on VIA VT inside a HP T
So, this is a series of things that much be accomplished, however, what are some pointers for programming the VT to accept and perform commands as they are entered in to the CLI? You will need the compiletc extension in order to compile the driver.
I’m looking for a few pointers and here is what I’m wanting to do in a nutshell: Language translations now possible!