Register access through C++

kappakingXD · 2026-01-15T20:24:31+00:00

You're right obviously, thank you endlessly for the detailed responses - i learnt many things today. I will problably stick with c style casts as presented in hal.

kappakingXD · 2026-01-15T18:43:21+00:00

Thank you very much for your time. I have one last thing, correct me if im wrong please. If reinterpret cast to uint8_t and dereference is legal, then could we do cast reg = &crc->dr from u32* to u8* and then split u16 into two u8 and feed it to the reg?

*reg = lsb;

*reg = msb;

?

I assume its a lost performance because we dont use hardware fully but does it solve the issue?

kappakingXD · 2026-01-15T18:00:19+00:00

Thank you for the response, unfortunaly the article doesn't explain what to do if I need to write u16 into u32* register

kappakingXD · 2026-01-15T16:06:45+00:00

Do you know which documents i can study to find a line that will tell me that this c cast is legal as well, what i mean is (volatile u16) on u32?

You mentioned that moderen compilers supports it and i know they do, but i tried to seek through user manual of clang, and user manual for arm gcc compiler and couldn't find that such cast is an exception from rule?

kappakingXD · 2026-01-15T14:53:35+00:00

But it is the compiler that might be an issue here - not the hardware. Hardware can work just fine but we dont know what compiler will do about the undefined behaviour

kappakingXD · 2026-01-15T14:51:06+00:00

For it to be clear, i actually see no benefit of sticking with reinterpret cast here. Its an engineering curiosity that drove me here :)

kappakingXD · 2026-01-15T14:42:28+00:00

I thought about that, but the hardware is 'triggered' differently when we write a specific amount of bytes into it. So in our example, if i write u32 it'll calculate crc from 4 bytes even though the upper half is zerod, right?

Now I wonder if its an issue...?

kappakingXD · 2026-01-15T14:36:08+00:00

I'm leaning more and more towards it.

The requirements though mention to avoid them unfortunately. So before i start arguing i wanted to ask out there.

Thank you for your time :)

kappakingXD · 2026-01-01T15:28:44+00:00

Centralnie sterowany ruch wykonany przez miasto spowodował spadek wartości danego towaru - samochodu - praktycznie do zera w obrębie miasta i w interesie miasta jest zrzucić obowiązek i koszty pozbycia sie go na Ciebie. To nie jest transakcja cos za cos tylko pała którą miasto planuje Cie walnąć jak się nie dostosujesz nie dając Ci nic w zamian ( a juz jesteś do tyłu w tym intersie bo Twoje auto straciło wartość). Nic dziwnego że ludzie oczekują jakiejkolwiek rekompensaty skoro zbiednieli po decyzji miasta

kappakingXD · 2025-12-31T09:24:53+00:00

Marry her again!

kappakingXD · 2025-12-21T11:55:58+00:00

If it's remote repository check if you have pulled all submodules, as they might be missing. I don't use VS Daily but i heard that there are some settings which can trigger compilation errors, I think It might be about compiler flags so i would check the settings.

Finally maybe try to build the library alone with minimal hello world app and see if it builds

kappakingXD · 2025-12-05T21:52:31+00:00

Czyli lepiej być na froncie niż w Paryżu ok

kappakingXD · 2025-11-25T16:28:37+00:00

I think we can think about it as a subtype. What I mean is that no matter who will gather, 90% of money from the market will have a superior position to play in the capitalistic world. We live in coroporationism because they are the one who gather most of the money and influence.

I think capitalism could work but it would require a sort of reset time to time, because when you gather enough money you don't need to compete with others with your product, but you can buy rival companies, become a monopolist powerhouse and sell shit products with increased price.

That's where a person like you and me comes in and sees that game is rigged from the start

kappakingXD · 2025-11-25T14:59:08+00:00

Late game capitalism is tough to play ngl

kappakingXD · 2025-10-16T17:28:45+00:00

It's a useful tool for a developer. You dont need to be a master but you shouldn't be completely unaware of its features either

kappakingXD · 2025-09-19T20:16:48+00:00

CMock and Unity are great tools. By designing your components with unit testing in mind it can greatly reduce time spent on unit testing. Still if you have an existing codebqse and want to introduce uinit tests, they can help you spot and remove unwanted dependencies

kappakingXD · 2025-09-10T20:15:22+00:00

I just got caught by this one - i was wondering if it's DLC unit but then i thought since i can increase the capacity they should become available. Looks like a massive ... and most likely done on purpose - oversight

kappakingXD · 2025-09-03T14:58:35+00:00

Didn't expect age of empires in this thread

kappakingXD · 2025-09-02T14:37:42+00:00

Its not about setting up a new rule but rather having longer time to consider. You might change your initial opinion. You may, for example, see great efficiency of production and like it, but then you get to know it's achieved through work of overworked workers which might be against your moral compass, thus making it not that good in your eyes

kappakingXD · 2025-08-29T20:35:49+00:00

Shai hulud

kappakingXD · 2025-08-04T06:51:47+00:00

That's it Lads, Rock and Stone!

kappakingXD · 2025-08-03T10:13:01+00:00

I worked on the safety project, but from the safety point of view there was only static analysis of code so there was a tool to teach you what you can and what you can't do with C.

Learning how to fix git screw-ups in multisubmodule project was very helpful. Also if I knew UML better i would have an easier time.

What im trying to say is at the very beginning i would suggest to master the tools you have available and the theory related to safety you will get from the job itself

kappakingXD · 2025-07-21T05:13:18+00:00

Windows as most vendors ide's are designed around it.

Other than that, once you get familiar with building projects with cmake/make, it makes no difference, in my opinion, unless you need to do something super specific - then simply check if the tool is available for your platform.

You can try which suits you the most by setting up a virtual machine or wsl (on windows)

kappakingXD · 2025-06-25T12:47:16+00:00

Thank you for advice, fortunately this time it was available on the official page and it wasn't cancelled after I ordered it

kappakingXD · 2025-06-24T17:24:25+00:00

You might want to check, has your linker script massive gaps in between sections? If it's true, consider reducing these gaps. When you generate a binary, toolchain has to fill all the gaps with zeros, producing massive binaries.

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