S12 / MagniV Microcontrollers中的主题 Re: HCS12 and Linux

HCS12 and Linux

sdavis — Sat, 30 Aug 2008 03:50:01 GMT

I am interested in using embedded linux as the operating system (kernel) with the HCS12 microcontroller. Has anyone done this successfully? I really don't know where to start. Suggestions please.

Re: HCS12 and Linux

CompilerGuru — Sat, 30 Aug 2008 07:20:41 GMT

I don't think Linux supports 16 bit cores, or does it? I doubt it runs on so little RAM as a S12 usually has,
so I would suggest that you either stick with another embedded OS or with another chip. Linux runs on some CF cores (I don't think it runs on the smaller ones).

Daniel

Re: HCS12 and Linux

JimDon — Sat, 30 Aug 2008 20:45:00 GMT

Isn't going to happen.

At least 32 bits, linear model, not paged.

Not only that, Linux requires much more memory that is internally available on any MCU.

The smallest freescale mcu with Linux is the V2 series. For processors without an MMU uClinux is used.

I recommend uCos.- there is a port for Dragon12 that works great. It can be downloaded from thier site.

Re: HCS12 and Linux

sdavis — Sun, 31 Aug 2008 04:02:02 GMT

Thank you Jim. I used uCOS on my last project. Just wanted to try out Linux. Guess that will have to be my next project.

Re: HCS12 and Linux

sdavis — Sun, 31 Aug 2008 04:03:28 GMT

You are right. Linux needs a 32-bit core. Back to uCOS. Linux will have to be my next project. Thank you.