CRITICAL_REGION_ENTER/EXIT

[John]

The critical section code in app_util_platform is controlled by the symbol SOFTDEVICE_PRESENT. Do I have to set it up in the project or is there something else that controls that?

Thanks

[Susheel Nuguru]

If you have softdevice present then ,you need to set it up in your project settings->C/C++ tab in the "Define" sub section. See the example project settings in the SDK\examples\ble_peripheral folder