CCS/CC2650: Compiler optimization level for BLE application and stack

Nomo

Part Number: CC2650

Tool/software: Code Composer Studio

Hello,

We have a question of compiler optimization level for BLE application and stack.
BLE SDK is v2.2.1 for CC2650 and we use SimpleBLEBroadcaster to implement Beacon.

The default optimization level is 4 (-O4 option); however, this makes a difficulty to do software debug (e.g. step execution).
So, my customer wants to change the optimization level.
However, as a result, sometimes exception occurs.

- Can we change the optimization level and should it work correctly?
If there are any recommended CCS version, ARM compiler version and compiler option, please let me know.

Best Regards,

Nomo

over 8 years ago

0 YiKai Chen over 8 years ago

Guru 735695 points

The recommended compiler version is TI ARM Compiler v5.2.6 and it's recommended to use CCS7.

0 Marie H over 8 years ago

TI__Guru* 83011 points

Hi Nomo,

Adjusting the optimization of the full project can lead to exceptions. You can try setting a lower optimization for the individual function using e.g.

#pragma FUNCTION_OPTIONS(SimpleBLECentral_processRoleEvent,"--opt_level=0")

Bluetooth®︎

Bluetooth forum

CCS/CC2650: Compiler optimization level for BLE application and stack