Release mode does not work

[skulkarni]

Hi,

We are working NRF52832, SDK15.3. It works properly in debug mode but when I build in Release mode it is not working.

From my understanding debug mode will have symbols, so the code size should be larger.

But to my surprise when I compare the code size for Flash code size is more than Debug code size.

Debug code Hex size:  288KB

Release Mode code Hex file size: 388KB

Please help me to understand the difference in the Hex file code generated.

[Turbo J]

Hex files cannot contain debug symbols.  These can be found in the elf file.

Which optimization is enabled in release mode? GCC "-O3" unrolls loops.

I recommend looking at the map file for actual flash (and other address space) usage.

[SL06]

I have the same problem here.  The release version take significantly more Flash and and Ram memory and won't run.  The Debug version run fine.    

I have plenty of Flash space left but Ram goes from 8.6 k to 2.6k left of 64 kb (nrf52832) when I set Release mode.  I suspect that there might be a conflict with Ram allocation, that prevent the program to run but I am not sure if I am wright and also what is the remedy.  

What are the  optimisation parameters in SES ?  In release mode, the options for code generation is already set to : optimize for  size.  What else can I play with ?

For now, I will use the Debug version with NRF_LOG_ENABLE and NRF_LOG_BACKEND_RTT_ENABLED  disable. My program will run on a battery powered nrf52832 module and use ESB communication/DFU.

[Vidar Berg]

Hi, please open your *emProject in a text editor to try and see if you can spot other configuration differences between "Release" and "Debug".  The Release configuration should obviously have consumed less memory.