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Moving from AVR to ARM's

Matt Smith
Note: This was originally posted on 6th June 2012 at http://forums.arm.com

So Im a Entry level Firmware Dev., i've been working with Arduino's/AVR's and PICS for a good few years. Im a pretty good C/C++ Programmer and Can understand ASM (At least for AVR) Pretty well. I understand circuits pretty well too (Well....as well as someone would need to working with MC's and such).

At work we use ARM's however, and while I don't directly deal with them...it's something i'd like to do. However Im at a loss at where to start. I know there are ARM Microprocessors and MCU's as well. I've seen a few of the TI boards around work (Mainly http://www.ti.com/tool/ek-lm4f232) the Stellaris Kits.

Where would be a good place to start? Probably something Simple since I know the ARM is prolly not as easy as Dealing with AVR's and PICS haha. But there are SOOO many different ones to choose from....and even more-so on the development kits. It's a bit overwhelming. Along with a bunch of different toolchains (Which im totally not used to).

I realize this question has been asked a million times, and I did search. But New MCU's/MP's come out yearly......and I figure a more up to date question would be worth the slight annoyance haha!.
I've heard the Cortex-M3's are probably the easiest to start with, but that's just what i've heard, not to mention I don't know what Eval Kits/Dev boards would be best.

Bonus Question: For someone Starting in ARM Development, what are the 2 best books you could think of as an accompanying guide.
Parents
  • Note: This was originally posted on 8th June 2012 at http://forums.arm.com


    > You can still write in Assembler on the M3's right? (like with an mbed device?)

    Yes, writing assembler for the M3 is no problem. Seems possible using the mbed tools too (http://mbed.org/cook...sembly-Language).

    > Are all the ARM Cores technically Microprocessors or Microcontrollers? The terms always seem to get flipped around depending the company (Sometimes just combining them to mean the same thing).

    I've never seen an official definition. If you ask me a (micro)processor is just the CPU implementation, and a microcontroller is a physical chip which can solder on to something which does plant control type work. A microcontoller therefore contains a microprocessor, but also a load of other goodies to complete a more or less standalone system.


    I see, Makes sense.
    I guess all ARM's would probably be considered MC's then?


Reply
  • Note: This was originally posted on 8th June 2012 at http://forums.arm.com


    > You can still write in Assembler on the M3's right? (like with an mbed device?)

    Yes, writing assembler for the M3 is no problem. Seems possible using the mbed tools too (http://mbed.org/cook...sembly-Language).

    > Are all the ARM Cores technically Microprocessors or Microcontrollers? The terms always seem to get flipped around depending the company (Sometimes just combining them to mean the same thing).

    I've never seen an official definition. If you ask me a (micro)processor is just the CPU implementation, and a microcontroller is a physical chip which can solder on to something which does plant control type work. A microcontoller therefore contains a microprocessor, but also a load of other goodies to complete a more or less standalone system.


    I see, Makes sense.
    I guess all ARM's would probably be considered MC's then?


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