gap_adv_param_t adv_param; adv_param.adv_mode = GAP_ADV_MODE_UNDIRECT; adv_param.adv_addr_type = GAP_ADDR_TYPE_PUBLIC; adv_param.adv_chnl_map = GAP_ADV_CHAN_ALL; adv_param.adv_filt_policy = GAP_ADV_ALLOW_SCAN_ANY_CON_ANY;