gistfile1.txt

// RF Front End Settings
// Note: The use of these values completely depends on how the PCB is laid out.
//       Please see Device Package and Evaluation Module (EM) Board below.
#define RF_FE_DIFFERENTIAL              0
#define RF_FE_SINGLE_ENDED_RFP          1
#define RF_FE_SINGLE_ENDED_RFN          2
#define RF_FE_ANT_DIVERSITY_RFP_FIRST   3
#define RF_FE_ANT_DIVERSITY_RFN_FIRST   4
#define RF_FE_SINGLE_ENDED_RFP_EXT_PINS 5
#define RF_FE_SINGLE_ENDED_RFN_EXT_PINS 6
//
#define RF_FE_INT_BIAS                  (0<<3)
#define RF_FE_EXT_BIAS                  (1<<3)

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...
...

#define BLE_USER_CFG                    { MAX_NUM_BLE_CONNS,    \
                                          MAX_NUM_PDU,          \
                                          MAX_PDU_SIZE,         \
                                          RF_FE_MODE_AND_BIAS,  \
                                          rfRegTbl,             \
                                          &txPwrTbl,            \
                                          rfDriverTable,        \
                                          eccDriverTable,       \
                                          CRYPTO_DRV_TABLE,     \
                                          trngDriverTable,      \
                                          ASSERT_CBACK,         \
                                          L2CAP_NUM_PSM,        \
                                          L2CAP_NUM_CO_CHANNELS,\
                                          &pfnBMAlloc,          \
                                          &pfnBMFree,           \
                                          PM_STARTUP_MARGIN }