subbu3881
Posts: 2
Joined: Thu Sep 20, 2018 11:50 am

Support For Bare Metal Programming

Thu Sep 20, 2018 11:55 am

Dear Support Team:

I am an Embedded Software developer. i am interesting in learning Bare Metal Programming, but don't know how to start.
Please, help me in How to Start, Learn and Developing Bare Metal Programs on RasPi Board.


Thanks and Regards,
Siva Prakash Reddy

jamesh
Raspberry Pi Engineer & Forum Moderator
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Re: Support For Bare Metal Programming

Thu Sep 20, 2018 12:37 pm

We don't have any specific information on baremetal programming on the Pi, but we do have a bare metal forum, so might be worth reading through that first.

https://www.raspberrypi.org/forums/viewforum.php?f=72
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B.Goode
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Re: Support For Bare Metal Programming

Thu Sep 20, 2018 2:06 pm

By the mystery of Internet Serendipity a link to this textbook popped up in my Twitter timeline earlier today. It might be relevant for you.

https://hackaday.com/2018/09/20/learn-a ... pberry-pi/

jamesh
Raspberry Pi Engineer & Forum Moderator
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Re: Support For Bare Metal Programming

Thu Sep 20, 2018 2:08 pm

B.Goode wrote:
Thu Sep 20, 2018 2:06 pm
By the mystery of Internet Serendipity a link to this textbook popped up in my Twitter timeline earlier today. It might be relevant for you.

https://hackaday.com/2018/09/20/learn-a ... pberry-pi/
Hey, and mine!
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jahboater
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Re: Support For Bare Metal Programming

Thu Sep 20, 2018 4:13 pm

If you just want to learn ARM assembler, I suggest this book:
https://www.amazon.co.uk/ARM-Assembly-L ... y+language

Also this one is worth a read:
https://www.amazon.co.uk/ARM-A32-Assemb ... y+language

dwelch67
Posts: 955
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Re: Support For Bare Metal Programming

Mon Sep 24, 2018 3:35 am

You have found the right place. I highly highly recommend you start with a pi-zero, which is armv6 based, the armv7 and armv8 on the pi3 is a whole other level of pain. There are other armv6 based pis you can sometimes get the pi1 A+ for lack of a better term.

You will need an sd card of course, dont need a big one a couple of gig is probably the smallest you can buy these days taht will be fine, dont need a full linux image. You will need some sort of serial cable, 3.3v based. sparkfun, adafruit, ebay. an ftdi breakout board for a couple of bucks on ebay plus some jumpers. or one of the cables from sparkfun/adafruit/amazon, etc. https://www.adafruit.com/product/954 be careful to hook it up right.

The first couple of topics in the baremetal forum are pinned and have a list of resources.

baremetal does not mean assembly language btw, normally baremetal is done in C with a small percentage of assembly if needed, usually for things you cant do in C.

But you can certainly learn assembly language on this platform. baremetal or not.

99% of baremetal programming is reading and for lack if a better term hacking, because all documentation is buggy, so you have to test it. The time spent writing the code for your actual application is a small percentage of the overall time. there are so many good examples and resources though that have blazed a trail you can just read those resources...more reading...Each new platform is like a new programming language most of your time is spent not programming your application but instead learning the rules and api calls, in this case learning the peripherals. ARM is not your primary concern, its like english to a book, its the transport that provides letters and words and you need to know that alphabet and language sure, but you are using the arm to get at the peripherals which are broadcom or broadcom purchased ip, not necessarily arm.

Have fun, come back here if you get stuck. Start with a pi-zero. There are other platforms, a plethera of stm32 based microcontrollers you can use to learn baremetal as well for example. The pi is easier to some extent but not documented as well.

subbu3881
Posts: 2
Joined: Thu Sep 20, 2018 11:50 am

Re: Support For Bare Metal Programming

Tue Sep 25, 2018 5:14 am

Thank You For Your Great Explanation.

Can you please provide/suggest some links/books regarding BareMetal Programming .?

I am also having STM32 ARM-Cortex Based Microcontroller Board, Where can I get BareMetal Programming Information regarding STM Board.?


Thanks and Regards,
Siva Prakash Reddy

jamesh
Raspberry Pi Engineer & Forum Moderator
Raspberry Pi Engineer & Forum Moderator
Posts: 23621
Joined: Sat Jul 30, 2011 7:41 pm

Re: Support For Bare Metal Programming

Tue Sep 25, 2018 6:48 am

subbu3881 wrote:
Tue Sep 25, 2018 5:14 am
Thank You For Your Great Explanation.

Can you please provide/suggest some links/books regarding BareMetal Programming .?

I am also having STM32 ARM-Cortex Based Microcontroller Board, Where can I get BareMetal Programming Information regarding STM Board.?


Thanks and Regards,
Siva Prakash Reddy
STM. Not here!
Principal Software Engineer at Raspberry Pi (Trading) Ltd.
Contrary to popular belief, humorous signatures are allowed. Here's an example...
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dwelch67
Posts: 955
Joined: Sat May 26, 2012 5:32 pm

Re: Support For Bare Metal Programming

Wed Sep 26, 2018 3:34 am

I mentioned the microcontrollers as another path someday. zero support for it at this site, this is raspberry pi only. since you found this forum I would start here with a pi-zero or one of the arm11 based raspberry pi boards. then choose your next path. can stay here and move to armv7 mode of a pi3 and then armv8 or head down another path...

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