Not all SDS versions are clear on this. So I decided to make this info visible.
softdevice API are all the function calls with names starting with prefix sd_which is exposed by softdevice.
Softdevice is enabled after successful
call to sd_softdevice_enable
Softdevice is disabled after
successful call to
sd_softdevice_disable
All the calls from nrf_sdm.h (SoftDevice Manager) are available before and after enabling softdevice.
if you check nrf_soc.h file. There is an enum that looks like below
enum NRF_SOC_SVCS
{
XXXX,
XXXX
}
All the defines inside this enum are intentionally made to look similar to the actual softdevice API call. for example enum value SD_NVIC_SYSTEMRESET is the SVC number for the softdevice call sd_nvic_systemreset()
Inside this enum, the SVC calls with numbers from
SOC_SVC_BASE
to
SOC_SVC_BASE_NOT_AVAILABLE - 1
should be available even though softdevice is not enabled.
The api calls from
SOC_SVC_BASE_NOT_AVAILABLE to SVC_SOC_LAST -1
only work when softdevice is enabled else they will return
#define NRF_ERROR_SOFTDEVICE_NOT_ENABLED (NRF_ERROR_BASE_NUM + 2) ///< SoftDevice has not been enabled
