[chbot] AI help with STM32

[Richard Jones]

I used the HAL to configure registers as needed, then read out the results
in code to write the instructions to load registers directly for speed. In
my case I printed the results as 'C' code using printf ( using bit band or
register writes ) so I just cut and pasted the printed 'C' code into the
application. Not at all portable, and not obvious to read, but I achieved
the speed that I needed at the time.

Cheers

Richard

On Thu, Jul 3, 2025 at 12:56 PM Charles Manning <cdhmanning at gmail.com>
wrote:

> OK, I can't help in your stated quest of an AI assistant, but here is how
> I tend to go about STM32 development which might get what you want.
>
> First I use the CubeMX tool to do all the primary set up (peripheral
> initialisation, clock trees, dma channel assignment etc).
> For some of the peripherals, the performance is not too critical and the
> HAL podge is not too podgy.  The HAL can work there.
> Then there are the few bits where the HAL is too bloaty and/or slow and/or
> missing the features you want. That is where I write my own drivers and
> bypass the HAL.
>
> It is OK to mix and match like that. It means you only need to go
> datasheet mining in a few critical places.
>
> Obviously you don't want to do things like write to the peripheral at the
> same time via HAL and your own code, but it is OK to use HAL to set things
> up, then apply your own tweaks then use your own code to do all the
> read/write stuff etc.
>
> This has worked well for me in the past and gives me the best of both
> worlds (well most of the time anyway).
>
>
> On Thu, Jul 3, 2025 at 10:49 AM Mark Atherton <markaren1 at xtra.co.nz>
> wrote:
>
>> Hi Charles,
>>
>> You are quite right, I could just dig straight into the documentation,
>> but at last count, there are something over 2,600 pages associated with
>> the STM32G491.
>>
>> I was rather hoping to implement then experiment with some new ideas,
>> rather than go into battle over trying to get peripherals configured.
>>
>> I am also quite shameless in terms of asking for help in any form that
>> might be available.
>>
>> Anyway, can anyone recommend an AI assistant that might be useful in my
>> journey ?
>>
>> Thanks,
>>
>> Mark
>>
>> ----------
>>
>> Charles Manning said
>>
>> What's wrong with the grey stuff sitting on your shoulders?
>>
>> The HAL normally has multiple modes of operation, including DMA options,
>> but if you're pushing the micro hard the HAL is often a bit bloated and
>> slow.
>>
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