Saturday, January 19, 2013

How can I get an introduction as to how Linux is used in Embedded Applications?

Q. I wish to have a dive (not swim very deep though) into Embedded Linux.
Are there any good resources on the internet that you would like to recommend?
Please note that I know the C language inside out and have also done micro-controllers programming even though it was without any RTOS.

A. See the guide here: http://www.scratchbox.org/documentation/general/tutorials/introduction.html

Where is the best source to have a custom hardware device designed and built?
Q. I am looking for a resource or a tech shop to custom design and build a hardware device to my specifications with embedded Linux. Where is the best place to find a firm who designs custom hardware devices?

A. You can TRY this place. I don't know if they'll do you any good or not but it's a start:

http://www.directron.com/contact.html

I just called them, myself, to see if they offered the services you describe, but they're in Texas and it's 8:45 pm there right now!...and they're closed.

I hope this helps. Good luck!

How do I install python libraries?
Q. I have an embedded Linux device that is running an embedded version of python for it. The scripts I'm trying to run work great on my computer but wont run on the embedded Linux device. I looked into the matter further and found that two modules I am using, threading and signal, are not included in the embedded version of python. They are (I think) part of the standard python library. How can I get these modules and install them separately. I don't think I can put the standard python onto my embedded Linux device.

A. The module threading is a module located in the Lib directory (standard installation). You could try to place this file in corresponding location on your device. Signal is a built-in module. I suspect its platform-dependent and maybe not (yet?) implemented for your device. If your platform is windows CE for example, signal is not implement in the win CE version of python



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