Pointer to class instance

RE: Pointer to class instance

tesc — Tue, 29 Mar 2016 12:01:28 GMT

The Nordic SoftDevices and SDKs do not use the heap at all, but there should be nothing preventing you from using a heap in your software. I have never used a heap for nRF software myself, so I do not know if and how memory settings must be changed for this to work.

RE: Pointer to class instance

hfrmobile — Tue, 29 Mar 2016 08:11:17 GMT

Even the workaround works (see answer) it would be good to know why the code mentioned in the original question fails when running on a Nordic NRF52 devboard. Something special we should know to know about heap/stack on Nordic platform?

RE: Pointer to class instance

hfrmobile — Tue, 29 Mar 2016 08:08:23 GMT

Depends what you mean by "port to C++". Simply compiling C code (with some adjustments) isn't a port for me. For example "wrapper classes" around the "Nordic C API" (e.g. NrfLed) is a port since taking advantage of the C++ language (ctor, dror, inheritance, ...)

RE: Pointer to class instance

tesc — Tue, 22 Mar 2016 08:54:51 GMT

The SDK is written in C, and various C toolchains are supported. As it is C it is relatively easy to port to C++, but it requires workarounds in some places.

RE: Pointer to class instance

hfrmobile — Mon, 21 Mar 2016 10:30:49 GMT

Workaround solution: Create class instance in main.cpp and provide it to others via global pointer ... (but not very beautiful in my view)

RE: Pointer to class instance

hfrmobile — Mon, 21 Mar 2016 10:29:21 GMT

GNU Compiler Collection: en.wikipedia.org/.../GNU_Compiler_Collection

GCC 1.0 was released in 1987.[1] It was extended to compile C++ in December of that year.

When talking about GCC I am talking about "GNU Compiler Collection" ;-)

Compiling NRF SDK stuff via C:/Program Files (x86)/GNU Tools ARM Embedded/4.9 2015q2/bin/arm-none-eabi-gcc

... and C++ via C:/Program Files (x86)/GNU Tools ARM Embedded/4.9 2015q2/bin/arm-none-eabi-g++

Btw, why exist there no pre-compiled libraries as on other platforms. Compiling NRF SDK + our project takes about 40 seconds ... that's quite long compared to Atmel for example ...

RE: Pointer to class instance

Wojtek — Mon, 21 Mar 2016 10:15:26 GMT

gcc is c compiler, g++ is c++ compiler. you sure that you are using gcc?

RE: Pointer to class instance

hfrmobile — Mon, 21 Mar 2016 10:12:32 GMT

Maybe the issue is GCC related ....

Sure? See: devzone.nordicsemi.com/.../ (e.g. topic "Eclipse Mars IDE for C/C++ Developers")

INFO: When the class instance is instanced on stack, it works. When it is global variable it doesn't (see code sample above).

RE: Pointer to class instance

Wojtek — Mon, 21 Mar 2016 10:00:32 GMT

I don't think this problem is nordic-related, as nordics don't support any c++ toolchain