Programming nrf51x22 with Keil in C++

RE: Programming nrf51x22 with Keil in C++

Nguyen Hoan Hoang — Sat, 13 Feb 2016 12:45:11 GMT

The LMXDisplayDemo example in C++

RE: Programming nrf51x22 with Keil in C++

Ric — Thu, 04 Feb 2016 11:51:24 GMT

@Nguyen Yes, I had look at your blog and also have my setup completed and able to build your sample Blinky and UART BLE examples. However, these are all C projects and I could not find any C++ demo project in it. I tried creating a new C++ project but could not build it successfully. Could you please share any sample C++ project with BLE soft device enabled? Thanks so much

RE: Programming nrf51x22 with Keil in C++

Nguyen Hoan Hoang — Thu, 04 Feb 2016 03:46:44 GMT

@Ric, have you had a look at my blog ? it shows you how to make the SDK work with C++

RE: Programming nrf51x22 with Keil in C++

Ric — Tue, 02 Feb 2016 14:50:15 GMT

Hi Everyone,

I'm trying follow something similar which you guys I have tried. I'm trying to mix C & C++. I get the below build error when I try it with GCC and Eclipse.

make[1]: *** No rule to make target _build/system_nrf51.o', needed bynrf51422_xxac_s110'. Stop. make: *** [all] Error 2

As @Nguyen Hoan Hoang has mentioned the SDK also missing the extern "C" encapsulation. One of the SVC call function do not compiles in C++. Should I believe that the is no way I can compile C++ code with the current SDK. To mention I'm using SDK v10 Thanks

RE: Programming nrf51x22 with Keil in C++

AlexDM0 — Tue, 21 Oct 2014 14:02:20 GMT

Thanks, I got it to compile! EDIT: I completely agree with azdem..

RE: Programming nrf51x22 with Keil in C++

azdem — Tue, 21 Oct 2014 13:47:12 GMT

Thanks for the explanation. As far as I see, the mbed team has already made the SDK C++ compatible and it is possible to export projects from their online toolchain to Keil or GCC. I have tried that with some online example projects and it seems to work easily. Why do I want to move to C++? Because, many open source libraries are written in C++. So, I would be glad indeed, if Nordic could support the C++ development directly...

RE: Programming nrf51x22 with Keil in C++

Nguyen Hoan Hoang — Tue, 21 Oct 2014 12:53:22 GMT

I don't know about Keil but the startup code for GCC from the SDK does not work with C++. It is missing the initialization for C++ runtime library. All the include from the SDK also missing the extern "C" encapsulation. One of the SVC call function do not compiles in C++. See my blog for change require for that function.

RE: Programming nrf51x22 with Keil in C++

azdem — Tue, 21 Oct 2014 12:20:57 GMT

Does the answer above mean that it is not possible to do C++ development (to be exact, mixing C & C++) on Keil?

RE: Programming nrf51x22 with Keil in C++

Nguyen Hoan Hoang — Tue, 21 Oct 2014 11:03:04 GMT

it's in include folder at the top of the tree where all common sources are located. It's a multi-platform working tree. The project should have all the require path for it. I see there is one that was not a relative path and that was the one. The include path for that should be "${workspace_loc:}/../../../include"

RE: Programming nrf51x22 with Keil in C++

AlexDM0 — Tue, 21 Oct 2014 09:31:29 GMT

Turns out "${workspace_loc:/nrf51_sdk/nrf51822/Include/sdk}" is not possible in windows (kepler) so "${workspace_loc}/nrf51_sdk/nrf51822/Include/sdk" worked. Now I have CMSIS compiled (using internal CDT, make didnt work). EHAT however has an include in your user folder which I don't have. the errors are: Info

: Internal Builder is used for build
arm-none-eabi-gcc -mcpu=cortex-m0 -mthumb -O0 -fmessage-length=0 -fsigned-char -ffunction-sections -fdata-sections -Wall -g3 "-IC:\\NRF\\dev_root\\ARM\\Nordic\\nRF51/nrf51_sdk/nrf51822/Include/ble/ble_services" "-IC:\\NRF\\dev_root\\ARM\\Nordic\\nRF51/nrf51_sdk/nrf51822/Include/sd_common" "-IC:\\NRF\\dev_root\\ARM\\Nordic\\nRF51/nrf51_sdk/nrf51822/Include/ble" "-IC:\\NRF\\dev_root\\ARM\\Nordic\\nRF51/nrf51_sdk/nrf51822/Include/s110" "-IC:\\NRF\\dev_root\\ARM\\Nordic\\nRF51/nrf51_sdk/nrf51822/Include/app_common" "-IC:\\NRF\\dev_root\\ARM\\Nordic\\nRF51/nrf51_sdk/nrf51822/Include/gcc" "-IC:\\NRF\\dev_root\\ARM\\Nordic\\nRF51/nrf51_sdk/nrf51822/Include" -I/Users/hoan/I-SYST/swdev/fwdev/include "-IC:\\NRF\\dev_root\\ARM\\Nordic\\nRF51/EHAL/include" -std=gnu99 -c -o "src\\ledmx.o" "..\\..\\..\\..\\..\\src\\ledmx.c" 
..\..\..\..\..\src\ledmx.c:38:21: fatal error: istddef.h: No such file or directory
 #include "istddef.h"
                     ^
compilation terminated.

RE: Programming nrf51x22 with Keil in C++

Nguyen Hoan Hoang — Mon, 20 Oct 2014 17:35:52 GMT

It should be. What error did you get ?

RE: Programming nrf51x22 with Keil in C++

AlexDM0 — Mon, 20 Oct 2014 17:22:14 GMT

Hi Nguyen,

I'm not sure why but I can't compile the CMSIS... Is all the code needed for that on the git page?

Regards,

Alex

RE: Programming nrf51x22 with Keil in C++

Nguyen Hoan Hoang — Mon, 20 Oct 2014 15:43:27 GMT

if you want to use C++ with Eclipse & GCC, try here embeddedsoftdev.blogspot.ca/.../ehal-nrf51.html