Re: STM32F4 GNAT Run Time System - roadmap

[Jere <jere.groups@gmail.com>]

I'm a little late to the party here, but I definitely would like to see support for more chips over the BSP.  Mind you I am biased, but I can usually wade through the data sheet and make a BSP from that.  Not that I wouldn't like a premade BSP, but given the option, I would prefer more chips to choose from.  I am currently looking at an M0+ chip, which as far as I can tell, has no GNAT cross compiler's available (nor runtimes).  It does have a GCC port for 4.9.3 I think, but not GNAT.  Speaking from the perspective of developing on a Windows machine.

At some point I guess I will have to dig in and figure out how to build GNAT for the m0+ using windows, then I'll have to figure out the runtime, but I am light years from understanding that stuff at the moment.

On Sunday, December 6, 2015 at 1:34:43 PM UTC-5, Simon Wright wrote:
> ARM's CMSIS[1] contains (in the CMSIS-SVD tab) the definition
> 
>    "The System View Description (SVD) files provide peripheral
>    information and other device parameters in formalized XML based
>    format.
> 
>    "The SVD file typically matches the information provided by silicon
>    vendors in device reference manuals."
> 
> AdaCore, as recently noted here, have made some tools available on
> Github[2]; one of these is svd2ada.
> 
> There are a lot of SVDs archived at [3]. They appear to have come from
> the ARM site[1] (but there are more vendors at [3] than at [1]).
> 
> svd2ada will process these files (well, I tried the Arduino Due,
> ATSAM3X8E, and AdaCore used STM32F4*); I've not done any evaluation yet
> aside from noting that they generate the GNAT-specific
> Volatile_Full_Access aspect, which is noted in the 'under development'
> version of the GCC docs (so, will likely be in GCC 6). Maybe plain
> Volatile will do (but users would have to remember to access the whole
> register explicitly, rather than leaving it up to the compiler to Do The
> Right Thing); that would be an easy-enough patch.
> 
> [1]
> http://www.arm.com/products/processors/cortex-m/cortex-microcontroller-software-interface-standard.php
> [2] https://github.com/AdaCore
> [3] https://github.com/posborne/cmsis-svd
I am fairly new to the ARM arena, so this may be a stupid question but what exactly does svd2Ada generate based off of the SVD files?  From the description and what I saw in the git repo it sounds like it makes something like a BSP?