diff --git a/nimble/host/mesh/include/mesh/glue.h b/nimble/host/mesh/include/mesh/glue.h
index 7e6b40f67..d9440ad14 100644
--- a/nimble/host/mesh/include/mesh/glue.h
+++ b/nimble/host/mesh/include/mesh/glue.h
@@ -24,10 +24,9 @@
 #include <errno.h>
 
 #include "syscfg/syscfg.h"
+#include "nimble/nimble_npl.h"
 
 #include "os/os_mbuf.h"
-#include "os/os_callout.h"
-#include "os/os_eventq.h"
 #include "os/queue.h"
 
 #include "atomic.h"
@@ -170,7 +169,7 @@
 
 typedef ble_addr_t bt_addr_le_t;
 
-#define k_fifo_init(queue) os_eventq_init(queue)
+#define k_fifo_init(queue) ble_npl_eventq_init(queue)
 #define net_buf_simple_tailroom(buf) OS_MBUF_TRAILINGSPACE(buf)
 #define net_buf_tailroom(buf) net_buf_simple_tailroom(buf)
 #define net_buf_headroom(buf) ((buf)->om_data - &(buf)->om_databuf[buf->om_pkthdr_len])
@@ -207,7 +206,7 @@ static inline void net_buf_simple_init(struct os_mbuf *buf,
     buf->om_len = 0;
 }
 
-void net_buf_put(struct os_eventq *fifo, struct os_mbuf *buf);
+void net_buf_put(struct ble_npl_eventq *fifo, struct os_mbuf *buf);
 void * net_buf_ref(struct os_mbuf *om);
 void net_buf_unref(struct os_mbuf *om);
 uint16_t net_buf_simple_pull_le16(struct os_mbuf *om);
@@ -224,8 +223,8 @@ void net_buf_simple_push_be16(struct os_mbuf *om, uint16_t val);
 void net_buf_simple_push_u8(struct os_mbuf *om, uint8_t val);
 void *net_buf_simple_pull(struct os_mbuf *om, uint8_t len);
 void *net_buf_simple_add(struct os_mbuf *om, uint8_t len);
-bool k_fifo_is_empty(struct os_eventq *q);
-void * net_buf_get(struct os_eventq *fifo,s32_t t);
+bool k_fifo_is_empty(struct ble_npl_eventq *q);
+void *net_buf_get(struct ble_npl_eventq *fifo,s32_t t);
 uint8_t *net_buf_simple_push(struct os_mbuf *om, uint8_t len);
 void net_buf_reserve(struct os_mbuf *om, size_t reserve);
 
@@ -279,18 +278,18 @@ int bt_le_adv_start(const struct ble_gap_adv_params *param,
 int bt_le_adv_stop(void);
 
 struct k_delayed_work {
-    struct os_callout work;
+    struct ble_npl_callout work;
 };
 
-void k_work_init(struct os_callout *work, os_event_fn handler);
-void k_delayed_work_init(struct k_delayed_work *w, os_event_fn *f);
+void k_work_init(struct ble_npl_callout *work, ble_npl_event_fn handler);
+void k_delayed_work_init(struct k_delayed_work *w, ble_npl_event_fn *f);
 void k_delayed_work_cancel(struct k_delayed_work *w);
 void k_delayed_work_submit(struct k_delayed_work *w, uint32_t ms);
 int64_t k_uptime_get(void);
 u32_t k_uptime_get_32(void);
 void k_sleep(int32_t duration);
-void k_work_submit(struct os_callout *w);
-void k_work_add_arg(struct os_callout *w, void *arg);
+void k_work_submit(struct ble_npl_callout *w);
+void k_work_add_arg(struct ble_npl_callout *w, void *arg);
 void k_delayed_work_add_arg(struct k_delayed_work *w, void *arg);
 uint32_t k_delayed_work_remaining_get(struct k_delayed_work *w);
 
@@ -367,25 +366,25 @@ static inline unsigned int find_msb_set(u32_t op)
 	((type *)(((char *)(ptr)) - offsetof(type, field)))
 
 
-#define k_sem os_sem
+#define k_sem ble_npl_sem
 
 static inline void k_sem_init(struct k_sem *sem, unsigned int initial_count,
 			      unsigned int limit)
 {
-	os_sem_init(sem, initial_count);
+	ble_npl_sem_init(sem, initial_count);
 }
 
 static inline int k_sem_take(struct k_sem *sem, s32_t timeout)
 {
 	uint32_t ticks;
 
-	os_time_ms_to_ticks(timeout, &ticks);
-	return - os_sem_pend(sem,  ticks);
+	ble_npl_time_ms_to_ticks(timeout, &ticks);
+	return - ble_npl_sem_pend(sem,  ticks);
 }
 
 static inline void k_sem_give(struct k_sem *sem)
 {
-	os_sem_release(sem);
+	ble_npl_sem_release(sem);
 }
 
 /* Helpers to access the storage array, since we don't have access to its
diff --git a/nimble/host/mesh/include/mesh/porting.h b/nimble/host/mesh/include/mesh/porting.h
new file mode 100644
index 000000000..eed8a2088
--- /dev/null
+++ b/nimble/host/mesh/include/mesh/porting.h
@@ -0,0 +1,19 @@
+/** @file
+ *  @brief Bluetooth Mesh Porting APIs.
+ */
+
+/*
+ * Copyright (c) 2017 Intel Corporation
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+#ifndef __BT_MESH_PORTING_H
+#define __BT_MESH_PORTING_H
+
+void mesh_adv_thread(void *args);
+
+/**
+ * @}
+ */
+
+#endif /* __BT_MESH_PORTING_H */
diff --git a/nimble/host/mesh/src/access.c b/nimble/host/mesh/src/access.c
index b79467cad..0850bcb02 100644
--- a/nimble/host/mesh/src/access.c
+++ b/nimble/host/mesh/src/access.c
@@ -184,9 +184,9 @@ static int publish_retransmit(struct bt_mesh_model *mod)
 	return bt_mesh_trans_send(&tx, sdu, &pub_sent_cb, mod);
 }
 
-static void mod_publish(struct os_event *work)
+static void mod_publish(struct ble_npl_event *work)
 {
-	struct bt_mesh_model_pub *pub = work->ev_arg;
+	struct bt_mesh_model_pub *pub = ble_npl_event_get_arg(work);
 	s32_t period_ms;
 	int err;
 
diff --git a/nimble/host/mesh/src/adv.c b/nimble/host/mesh/src/adv.c
index 84c267b49..8b8b4260a 100644
--- a/nimble/host/mesh/src/adv.c
+++ b/nimble/host/mesh/src/adv.c
@@ -16,6 +16,7 @@
 #include "host/ble_hs_adv.h"
 #include "host/ble_gap.h"
 #include "nimble/hci_common.h"
+#include "mesh/porting.h"
 
 #include "adv.h"
 #include "foundation.h"
@@ -44,11 +45,13 @@ static s32_t adv_int_min =  ADV_INT_DEFAULT_MS;
 /* TinyCrypt PRNG consumes a lot of stack space, so we need to have
  * an increased call stack whenever it's used.
  */
+#if MYNEWT
 #define ADV_STACK_SIZE 768
 OS_TASK_STACK_DEFINE(g_blemesh_stack, ADV_STACK_SIZE);
-
 struct os_task adv_task;
-static struct os_eventq adv_queue;
+#endif
+
+static struct ble_npl_eventq adv_queue;
 extern u8_t g_mesh_addr_type;
 
 static os_membuf_t adv_buf_mem[OS_MEMPOOL_SIZE(
@@ -138,42 +141,41 @@ static inline void adv_send(struct os_mbuf *buf)
 	BT_DBG("Advertising stopped");
 }
 
-static void
-adv_thread(void *args)
+void
+mesh_adv_thread(void *args)
 {
-	static struct os_event *ev;
+	static struct ble_npl_event *ev;
 	struct os_mbuf *buf;
 #if (MYNEWT_VAL(BLE_MESH_PROXY))
 	s32_t timeout;
-	struct os_eventq *eventq_pool = &adv_queue;
 #endif
 
 	BT_DBG("started");
 
 	while (1) {
 #if (MYNEWT_VAL(BLE_MESH_PROXY))
-		ev = os_eventq_get_no_wait(&adv_queue);
+		ev = ble_npl_eventq_get_tmo(&adv_queue, 0);
 		while (!ev) {
 			timeout = bt_mesh_proxy_adv_start();
 			BT_DBG("Proxy Advertising up to %d ms", timeout);
 
 			// FIXME: should we redefine K_SECONDS macro instead in glue?
 			if (timeout != K_FOREVER) {
-				timeout = os_time_ms_to_ticks32(timeout);
+				timeout = ble_npl_time_ms_to_ticks32(timeout);
 			}
 
-			ev = os_eventq_poll(&eventq_pool, 1, timeout);
+			ev = ble_npl_eventq_get_tmo(&adv_queue, timeout);
 			bt_mesh_proxy_adv_stop();
 		}
 #else
-		ev = os_eventq_get(&adv_queue);
+		ev = ble_npl_eventq_get(&adv_queue);
 #endif
 
-		if (!ev || !ev->ev_arg) {
+		if (!ev || !ble_npl_event_get_arg(ev)) {
 			continue;
 		}
 
-		buf = ev->ev_arg;
+		buf = ble_npl_event_get_arg(ev);
 
 		/* busy == 0 means this was canceled */
 		if (BT_MESH_ADV(buf)->busy) {
@@ -181,17 +183,17 @@ adv_thread(void *args)
 			adv_send(buf);
 		}
 
-		os_sched(NULL);
+		/* os_sched(NULL); */
 	}
 }
 
 void bt_mesh_adv_update(void)
 {
-	static struct os_event ev = { };
+	static struct ble_npl_event ev = { };
 
 	BT_DBG("");
 
-	os_eventq_put(&adv_queue, &ev);
+	ble_npl_eventq_put(&adv_queue, &ev);
 }
 
 struct os_mbuf *bt_mesh_adv_create_from_pool(struct os_mbuf_pool *pool,
@@ -217,7 +219,7 @@ struct os_mbuf *bt_mesh_adv_create_from_pool(struct os_mbuf_pool *pool,
 	adv->count        = xmit_count;
 	adv->adv_int      = xmit_int;
 	adv->ref_cnt = 1;
-	adv->ev.ev_arg = buf;
+	ble_npl_event_set_arg(&adv->ev, buf);
 	return buf;
 }
 
@@ -237,7 +239,6 @@ void bt_mesh_adv_send(struct os_mbuf *buf, const struct bt_mesh_send_cb *cb,
 	BT_MESH_ADV(buf)->cb = cb;
 	BT_MESH_ADV(buf)->cb_data = cb_data;
 	BT_MESH_ADV(buf)->busy = 1;
-	BT_MESH_ADV(buf)->ev.ev_cb = NULL; /* does not matter */
 
 	net_buf_put(&adv_queue, net_buf_ref(buf));
 }
@@ -307,11 +308,13 @@ void bt_mesh_adv_init(void)
 			       MYNEWT_VAL(BLE_MESH_ADV_BUF_COUNT));
 	assert(rc == 0);
 
-	os_eventq_init(&adv_queue);
+	ble_npl_eventq_init(&adv_queue);
 
-	os_task_init(&adv_task, "mesh_adv", adv_thread, NULL,
+#if MYNEWT
+	os_task_init(&adv_task, "mesh_adv", mesh_adv_thread, NULL,
 	             MYNEWT_VAL(BLE_MESH_ADV_TASK_PRIO), OS_WAIT_FOREVER,
 	             g_blemesh_stack, ADV_STACK_SIZE);
+#endif
 
 	/* For BT5 controllers we can have fast advertising interval */
 	if (ble_hs_hci_get_hci_version() >= BLE_HCI_VER_BCS_5_0) {
diff --git a/nimble/host/mesh/src/adv.h b/nimble/host/mesh/src/adv.h
index e40d6673b..564e36572 100644
--- a/nimble/host/mesh/src/adv.h
+++ b/nimble/host/mesh/src/adv.h
@@ -53,7 +53,7 @@ struct bt_mesh_adv {
 	};
 
 	int ref_cnt;
-	struct os_event ev;
+	struct ble_npl_event ev;
 };
 
 typedef struct bt_mesh_adv *(*bt_mesh_adv_alloc_t)(int id);
diff --git a/nimble/host/mesh/src/beacon.c b/nimble/host/mesh/src/beacon.c
index 34ea6b82a..38990ec80 100644
--- a/nimble/host/mesh/src/beacon.c
+++ b/nimble/host/mesh/src/beacon.c
@@ -232,7 +232,7 @@ static void update_beacon_observation(void)
 	}
 }
 
-static void beacon_send(struct os_event *work)
+static void beacon_send(struct ble_npl_event *work)
 {
 	/* Don't send anything if we have an active provisioning link */
 	if ((MYNEWT_VAL(BLE_MESH_PROV)) && bt_prov_active()) {
diff --git a/nimble/host/mesh/src/cfg_srv.c b/nimble/host/mesh/src/cfg_srv.c
index 8645e03a2..0ce3af848 100644
--- a/nimble/host/mesh/src/cfg_srv.c
+++ b/nimble/host/mesh/src/cfg_srv.c
@@ -3110,9 +3110,9 @@ const struct bt_mesh_model_op bt_mesh_cfg_srv_op[] = {
 	BT_MESH_MODEL_OP_END,
 };
 
-static void hb_publish(struct os_event *work)
+static void hb_publish(struct ble_npl_event *work)
 {
-	struct bt_mesh_cfg_srv *cfg = work->ev_arg;
+	struct bt_mesh_cfg_srv *cfg = ble_npl_event_get_arg(work);
 	struct bt_mesh_model *model = cfg->model;
 	struct bt_mesh_subnet *sub;
 	u16_t period_ms;
diff --git a/nimble/host/mesh/src/friend.c b/nimble/host/mesh/src/friend.c
index 42c9384b7..ac106f36d 100644
--- a/nimble/host/mesh/src/friend.c
+++ b/nimble/host/mesh/src/friend.c
@@ -656,9 +656,9 @@ static void send_friend_clear(struct bt_mesh_friend *frnd)
 			 sizeof(req), NULL, &clear_sent_cb, frnd);
 }
 
-static void clear_timeout(struct os_event *work)
+static void clear_timeout(struct ble_npl_event *work)
 {
-	struct bt_mesh_friend *frnd = work->ev_arg;
+	struct bt_mesh_friend *frnd = ble_npl_event_get_arg(work);
 	u32_t duration;
 
 	BT_DBG("LPN 0x%04x (old) Friend 0x%04x", frnd->lpn, frnd->clear.frnd);
@@ -997,9 +997,9 @@ static void buf_send_end(int err, void *user_data)
 	}
 }
 
-static void friend_timeout(struct os_event *work)
+static void friend_timeout(struct ble_npl_event *work)
 {
-	struct bt_mesh_friend *frnd = work->ev_arg;
+	struct bt_mesh_friend *frnd = ble_npl_event_get_arg(work);
 	static const struct bt_mesh_send_cb buf_sent_cb = {
 		.start = buf_send_start,
 		.end = buf_send_end,
diff --git a/nimble/host/mesh/src/glue.c b/nimble/host/mesh/src/glue.c
index 0f0bf1edf..8fc27a678 100644
--- a/nimble/host/mesh/src/glue.c
+++ b/nimble/host/mesh/src/glue.c
@@ -70,16 +70,16 @@ bt_hex(const void *buf, size_t len)
 }
 
 void
-net_buf_put(struct os_eventq *fifo, struct os_mbuf *om)
+net_buf_put(struct ble_npl_eventq *fifo, struct os_mbuf *om)
 {
-    struct os_event *ev;
+    struct ble_npl_event *ev;
 
     assert(OS_MBUF_IS_PKTHDR(om));
     ev = &BT_MESH_ADV(om)->ev;
     assert(ev);
-    assert(ev->ev_arg);
+    assert(ble_npl_event_get_arg(ev));
 
-    os_eventq_put(fifo, ev);
+    ble_npl_eventq_put(fifo, ev);
 }
 
 void *
@@ -302,17 +302,17 @@ net_buf_simple_add(struct os_mbuf *om, uint8_t len)
 }
 
 bool
-k_fifo_is_empty(struct os_eventq *q)
+k_fifo_is_empty(struct ble_npl_eventq *q)
 {
-    return STAILQ_EMPTY(&q->evq_list);
+    return ble_npl_eventq_is_empty(q);
 }
 
-void * net_buf_get(struct os_eventq *fifo, s32_t t)
+void * net_buf_get(struct ble_npl_eventq *fifo, s32_t t)
 {
-    struct os_event *ev = os_eventq_get_no_wait(fifo);
+    struct ble_npl_event *ev = ble_npl_eventq_get_tmo(fifo, 0);
 
     if (ev) {
-        return ev->ev_arg;
+        return ble_npl_event_get_arg(ev);
     }
 
     return NULL;
@@ -339,21 +339,21 @@ net_buf_reserve(struct os_mbuf *om, size_t reserve)
 }
 
 void
-k_work_init(struct os_callout *work, os_event_fn handler)
+k_work_init(struct ble_npl_callout *work, ble_npl_event_fn handler)
 {
-    os_callout_init(work, os_eventq_dflt_get(), handler, NULL);
+    ble_npl_callout_init(work, ble_npl_eventq_dflt_get(), handler, NULL);
 }
 
 void
-k_delayed_work_init(struct k_delayed_work *w, os_event_fn *f)
+k_delayed_work_init(struct k_delayed_work *w, ble_npl_event_fn *f)
 {
-    os_callout_init(&w->work, os_eventq_dflt_get(), f, NULL);
+    ble_npl_callout_init(&w->work, ble_npl_eventq_dflt_get(), f, NULL);
 }
 
 void
 k_delayed_work_cancel(struct k_delayed_work *w)
 {
-    os_callout_stop(&w->work);
+    ble_npl_callout_stop(&w->work);
 }
 
 void
@@ -361,49 +361,49 @@ k_delayed_work_submit(struct k_delayed_work *w, uint32_t ms)
 {
     uint32_t ticks;
 
-    if (os_time_ms_to_ticks(ms, &ticks) != 0) {
+    if (ble_npl_time_ms_to_ticks(ms, &ticks) != 0) {
         assert(0);
     }
-    os_callout_reset(&w->work, ticks);
+    ble_npl_callout_reset(&w->work, ticks);
 }
 
 void
-k_work_submit(struct os_callout *w)
+k_work_submit(struct ble_npl_callout *w)
 {
-    os_callout_reset(w, 0);
+    ble_npl_callout_reset(w, 0);
 }
 
 void
-k_work_add_arg(struct os_callout *w, void *arg)
+k_work_add_arg(struct ble_npl_callout *w, void *arg)
 {
-    w->c_ev.ev_arg = arg;
+    ble_npl_callout_set_arg(w, arg);
 }
 
 void
 k_delayed_work_add_arg(struct k_delayed_work *w, void *arg)
 {
-    w->work.c_ev.ev_arg = arg;
+    k_work_add_arg(&w->work, arg);
 }
 
 uint32_t
 k_delayed_work_remaining_get (struct k_delayed_work *w)
 {
     int sr;
-    os_time_t t;
+    ble_npl_time_t t;
 
     OS_ENTER_CRITICAL(sr);
 
-    t = os_callout_remaining_ticks(&w->work, os_time_get());
+    t = ble_npl_callout_remaining_ticks(&w->work, ble_npl_time_get());
 
     OS_EXIT_CRITICAL(sr);
 
-    return os_time_ticks_to_ms32(t);
+    return ble_npl_time_ticks_to_ms32(t);
 }
 
 int64_t k_uptime_get(void)
 {
     /* We should return ms */
-    return os_get_uptime_usec() / 1000;
+    return ble_npl_time_ticks_to_ms32(ble_npl_time_get());
 }
 
 u32_t k_uptime_get_32(void)
@@ -415,9 +415,9 @@ void k_sleep(int32_t duration)
 {
     uint32_t ticks;
 
-    ticks = os_time_ms_to_ticks32(duration);
+    ticks = ble_npl_time_ms_to_ticks32(duration);
 
-    os_time_delay(ticks);
+    ble_npl_time_delay(ticks);
 }
 
 static uint8_t pub[64];
diff --git a/nimble/host/mesh/src/health_srv.c b/nimble/host/mesh/src/health_srv.c
index 642e6163d..32c2443ba 100644
--- a/nimble/host/mesh/src/health_srv.c
+++ b/nimble/host/mesh/src/health_srv.c
@@ -366,9 +366,9 @@ int bt_mesh_fault_update(struct bt_mesh_elem *elem)
 	return bt_mesh_model_publish(mod);
 }
 
-static void attention_off(struct os_event *work)
+static void attention_off(struct ble_npl_event *work)
 {
-	struct bt_mesh_health_srv *srv = work->ev_arg;
+	struct bt_mesh_health_srv *srv = ble_npl_event_get_arg(work);
 	BT_DBG("");
 
 	if (srv->cb && srv->cb->attn_off) {
diff --git a/nimble/host/mesh/src/lpn.c b/nimble/host/mesh/src/lpn.c
index 0cc462298..e45650206 100644
--- a/nimble/host/mesh/src/lpn.c
+++ b/nimble/host/mesh/src/lpn.c
@@ -721,7 +721,7 @@ static void update_timeout(struct bt_mesh_lpn *lpn)
 	}
 }
 
-static void lpn_timeout(struct os_event *work)
+static void lpn_timeout(struct ble_npl_event *work)
 {
 	struct bt_mesh_lpn *lpn = &bt_mesh.lpn;
 
diff --git a/nimble/host/mesh/src/net.c b/nimble/host/mesh/src/net.c
index 9bd79681a..c4034d356 100644
--- a/nimble/host/mesh/src/net.c
+++ b/nimble/host/mesh/src/net.c
@@ -773,7 +773,7 @@ int bt_mesh_net_resend(struct bt_mesh_subnet *sub, struct os_mbuf *buf,
 	return 0;
 }
 
-static void bt_mesh_net_local(struct os_event *work)
+static void bt_mesh_net_local(struct ble_npl_event *work)
 {
 	struct os_mbuf *buf;
 
@@ -1337,7 +1337,7 @@ done:
     os_mbuf_free_chain(buf);
 }
 
-static void ivu_complete(struct os_event *work)
+static void ivu_complete(struct ble_npl_event *work)
 {
 	BT_DBG("");
 
diff --git a/nimble/host/mesh/src/net.h b/nimble/host/mesh/src/net.h
index 5e11aa27b..f32649470 100644
--- a/nimble/host/mesh/src/net.h
+++ b/nimble/host/mesh/src/net.h
@@ -200,7 +200,7 @@ struct bt_mesh_net {
 	s64_t last_update;       /* Time since last IV Update change */
 
 	/* Local network interface */
-	struct os_callout local_work;
+	struct ble_npl_callout local_work;
 	struct net_buf_slist_t local_queue;
 
 #if MYNEWT_VAL(BLE_MESH_FRIEND)
diff --git a/nimble/host/mesh/src/prov.c b/nimble/host/mesh/src/prov.c
index a5a18fcfb..f4239e3c8 100644
--- a/nimble/host/mesh/src/prov.c
+++ b/nimble/host/mesh/src/prov.c
@@ -1137,7 +1137,7 @@ static void close_link(u8_t err, u8_t reason)
 }
 
 #if (MYNEWT_VAL(BLE_MESH_PB_ADV))
-static void prov_retransmit(struct os_event *work)
+static void prov_retransmit(struct ble_npl_event *work)
 {
 	int i;
 
diff --git a/nimble/host/mesh/src/proxy.c b/nimble/host/mesh/src/proxy.c
index 4ec2cbe35..55148cd45 100644
--- a/nimble/host/mesh/src/proxy.c
+++ b/nimble/host/mesh/src/proxy.c
@@ -97,7 +97,7 @@ static const struct ble_gap_adv_params fast_adv_param = {
 static bool proxy_adv_enabled;
 
 #if (MYNEWT_VAL(BLE_MESH_GATT_PROXY))
-static void proxy_send_beacons(struct os_event *work);
+static void proxy_send_beacons(struct ble_npl_event *work);
 #endif
 
 #if (MYNEWT_VAL(BLE_MESH_PB_GATT))
@@ -115,7 +115,7 @@ static struct bt_mesh_proxy_client {
 	} filter_type;
 	u8_t msg_type;
 #if (MYNEWT_VAL(BLE_MESH_GATT_PROXY))
-	struct os_callout send_beacons;
+	struct ble_npl_callout send_beacons;
 #endif
 	struct os_mbuf    *buf;
 } clients[MYNEWT_VAL(BLE_MAX_CONNECTIONS)] = {
@@ -384,12 +384,13 @@ static int beacon_send(uint16_t conn_handle, struct bt_mesh_subnet *sub)
 	return rc;
 }
 
-static void proxy_send_beacons(struct os_event *work)
+static void proxy_send_beacons(struct ble_npl_event *work)
 {
 	struct bt_mesh_proxy_client *client;
 	int i;
 
-	client = work->ev_arg;
+
+	client = ble_npl_event_get_arg(work);
 
 	for (i = 0; i < ARRAY_SIZE(bt_mesh.sub); i++) {
 		struct bt_mesh_subnet *sub = &bt_mesh.sub[i];
diff --git a/nimble/host/mesh/src/transport.c b/nimble/host/mesh/src/transport.c
index 918af1fe7..e7f658e91 100644
--- a/nimble/host/mesh/src/transport.c
+++ b/nimble/host/mesh/src/transport.c
@@ -272,9 +272,9 @@ static void seg_tx_send_unacked(struct seg_tx *tx)
 	}
 }
 
-static void seg_retransmit(struct os_event *work)
+static void seg_retransmit(struct ble_npl_event *work)
 {
-	struct seg_tx *tx = work->ev_arg;
+	struct seg_tx *tx = ble_npl_event_get_arg(work);
 	seg_tx_send_unacked(tx);
 }
 
@@ -1001,9 +1001,9 @@ static void seg_rx_reset(struct seg_rx *rx, bool full_reset)
 	}
 }
 
-static void seg_ack(struct os_event *work)
+static void seg_ack(struct ble_npl_event *work)
 {
-	struct seg_rx *rx = work->ev_arg;
+	struct seg_rx *rx = ble_npl_event_get_arg(work);
 
 	BT_DBG("rx %p", rx);
 
diff --git a/nimble/host/src/ble_hs_hci_cmd.c b/nimble/host/src/ble_hs_hci_cmd.c
index c68479f48..e5acd71ab 100644
--- a/nimble/host/src/ble_hs_hci_cmd.c
+++ b/nimble/host/src/ble_hs_hci_cmd.c
@@ -179,8 +179,9 @@ ble_hs_hci_cmd_body_le_set_adv_params(const struct hci_adv_params *adv,
     itvl = BLE_HCI_ADV_ITVL_MIN;
 #else
     /* Make sure interval is valid for advertising type. */
-    if ((adv->adv_type == BLE_HCI_ADV_TYPE_ADV_NONCONN_IND) ||
-        (adv->adv_type == BLE_HCI_ADV_TYPE_ADV_SCAN_IND)) {
+    if (((adv->adv_type == BLE_HCI_ADV_TYPE_ADV_NONCONN_IND) ||
+        (adv->adv_type == BLE_HCI_ADV_TYPE_ADV_SCAN_IND)) &&
+        ble_hs_hci_get_hci_version() < BLE_HCI_VER_BCS_5_0) {
         itvl = BLE_HCI_ADV_ITVL_NONCONN_MIN;
     } else {
         itvl = BLE_HCI_ADV_ITVL_MIN;
diff --git a/nimble/include/nimble/nimble_npl.h b/nimble/include/nimble/nimble_npl.h
index 21d4c1e59..77e11f573 100644
--- a/nimble/include/nimble/nimble_npl.h
+++ b/nimble/include/nimble/nimble_npl.h
@@ -68,6 +68,9 @@ struct ble_npl_eventq *ble_npl_eventq_dflt_get(void);
 
 void ble_npl_eventq_init(struct ble_npl_eventq *evq);
 
+struct ble_npl_event *ble_npl_eventq_get_tmo(struct ble_npl_eventq *evq,
+                                             ble_npl_time_t tmo);
+
 struct ble_npl_event *ble_npl_eventq_get(struct ble_npl_eventq *evq);
 
 void ble_npl_eventq_put(struct ble_npl_eventq *evq, struct ble_npl_event *ev);
@@ -86,6 +89,8 @@ void *ble_npl_event_get_arg(struct ble_npl_event *ev);
 
 void ble_npl_event_set_arg(struct ble_npl_event *ev, void *arg);
 
+int ble_npl_eventq_is_empty(struct ble_npl_eventq *evq);
+
 /*
  * Mutexes
  */
@@ -125,6 +130,11 @@ int ble_npl_callout_queued(struct ble_npl_callout *co);
 
 uint32_t ble_npl_callout_get_ticks(struct ble_npl_callout *co);
 
+uint32_t ble_npl_callout_remaining_ticks(struct ble_npl_callout *co,
+                                         ble_npl_time_t time);
+
+void ble_npl_callout_set_arg(struct ble_npl_callout *co,
+                             void *arg);
 /*
  * Time functions
  */
@@ -139,6 +149,8 @@ ble_npl_time_t ble_npl_time_ms_to_ticks32(uint32_t ms);
 
 uint32_t ble_npl_time_ticks_to_ms32(ble_npl_time_t ticks);
 
+void ble_npl_time_delay(ble_npl_time_t ticks);
+
 /*
  * Hardware-specific
  *
diff --git a/porting/nimble/Makefile.defs b/porting/nimble/Makefile.defs
index 5b13ba91a..347c10804 100644
--- a/porting/nimble/Makefile.defs
+++ b/porting/nimble/Makefile.defs
@@ -93,4 +93,8 @@ ifneq (,$(NIMBLE_CFG_TINYCRYPT))
 include $(NIMBLE_ROOT)/porting/nimble/Makefile.tinycrypt
 endif
 
+ifneq (,$(NIMBLE_CFG_MESH))
+include $(NIMBLE_ROOT)/porting/nimble/Makefile.mesh
+endif
+
 NIMBLE_OBJ := $(NIMBLE_SRC:.c=.o)
diff --git a/porting/nimble/Makefile.mesh b/porting/nimble/Makefile.mesh
new file mode 100644
index 000000000..ef64e214d
--- /dev/null
+++ b/porting/nimble/Makefile.mesh
@@ -0,0 +1,25 @@
+NIMBLE_INCLUDE += \
+	$(NIMBLE_ROOT)/nimble/host/mesh/include \
+
+NIMBLE_SRC += \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/access.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/adv.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/beacon.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/cfg_cli.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/cfg_srv.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/crypto.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/friend.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/glue.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/health_cli.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/health_srv.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/light_model.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/lpn.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/mesh.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/model_cli.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/model_srv.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/net.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/prov.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/proxy.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/shell.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/testing.c \
+	$(NIMBLE_ROOT)/nimble/host/mesh/src/transport.c \
diff --git a/porting/npl/freertos/include/nimble/nimble_npl_os.h b/porting/npl/freertos/include/nimble/nimble_npl_os.h
index 2b24556ae..cea2bc541 100644
--- a/porting/npl/freertos/include/nimble/nimble_npl_os.h
+++ b/porting/npl/freertos/include/nimble/nimble_npl_os.h
@@ -99,6 +99,12 @@ ble_npl_eventq_init(struct ble_npl_eventq *evq)
     evq->q = xQueueCreate(32, sizeof(struct ble_npl_eventq *));
 }
 
+static inline struct ble_npl_event *
+ble_npl_eventq_get_tmo(struct ble_npl_eventq *evq, ble_npl_time_t tmo)
+{
+    return npl_freertos_eventq_get_tmo(evq, tmo);
+}
+
 static inline struct ble_npl_event *
 ble_npl_eventq_get(struct ble_npl_eventq *evq)
 {
@@ -128,6 +134,12 @@ ble_npl_eventq_run(struct ble_npl_eventq *evq)
     ev->fn(ev);
 }
 
+static inline int
+ble_npl_eventq_is_empty(struct ble_npl_eventq *evq)
+{
+    return xQueueIsQueueEmptyFromISR(evq->q);
+}
+
 static inline void
 ble_npl_event_init(struct ble_npl_event *ev, ble_npl_event_fn *fn,
                    void *arg)
@@ -228,6 +240,19 @@ ble_npl_callout_get_ticks(struct ble_npl_callout *co)
     return xTimerGetExpiryTime(co->handle);
 }
 
+static inline uint32_t
+ble_npl_callout_remaining_ticks(struct ble_npl_callout *co,
+                                ble_npl_time_t time)
+{
+    return npl_freertos_callout_remaining_ticks(co, time);
+}
+
+static inline void
+ble_npl_callout_set_arg(struct ble_npl_callout *co, void *arg)
+{
+    co->ev.arg = arg;
+}
+
 static inline uint32_t
 ble_npl_time_get(void)
 {
@@ -258,6 +283,12 @@ ble_npl_time_ticks_to_ms32(ble_npl_time_t ticks)
     return ticks * 1000 / configTICK_RATE_HZ;
 }
 
+static inline void
+ble_npl_time_delay(ble_npl_time_t ticks)
+{
+    vTaskDelay(ticks);
+}
+
 #if NIMBLE_CFG_CONTROLLER
 static inline void
 ble_npl_hw_set_isr(int irqn, uint32_t addr)
diff --git a/porting/npl/freertos/include/nimble/npl_freertos.h b/porting/npl/freertos/include/nimble/npl_freertos.h
index e9a2f3366..f11976843 100644
--- a/porting/npl/freertos/include/nimble/npl_freertos.h
+++ b/porting/npl/freertos/include/nimble/npl_freertos.h
@@ -26,6 +26,8 @@ extern "C" {
 
 struct ble_npl_eventq *npl_freertos_eventq_dflt_get(void);
 
+struct ble_npl_event *npl_freertos_eventq_get_tmo(struct ble_npl_eventq *evq, ble_npl_time_t tmo);
+
 struct ble_npl_event *npl_freertos_eventq_get(struct ble_npl_eventq *evq);
 
 void npl_freertos_eventq_put(struct ble_npl_eventq *evq,
@@ -55,6 +57,9 @@ void npl_freertos_callout_init(struct ble_npl_callout *co,
 int npl_freertos_callout_reset(struct ble_npl_callout *co,
                                ble_npl_time_t ticks);
 
+ble_npl_time_t npl_freertos_callout_remaining_ticks(struct ble_npl_callout *co,
+						    ble_npl_time_t now);
+
 ble_npl_error_t npl_freertos_time_ms_to_ticks(uint32_t ms,
                                               ble_npl_time_t *out_ticks);
 
diff --git a/porting/npl/freertos/src/npl_os_freertos.c b/porting/npl/freertos/src/npl_os_freertos.c
index 226ad6509..006064305 100644
--- a/porting/npl/freertos/src/npl_os_freertos.c
+++ b/porting/npl/freertos/src/npl_os_freertos.c
@@ -42,19 +42,27 @@ npl_freertos_eventq_dflt_get(void)
 }
 
 struct ble_npl_event *
-npl_freertos_eventq_get(struct ble_npl_eventq *evq)
+npl_freertos_eventq_get_tmo(struct ble_npl_eventq *evq, ble_npl_time_t tmo)
 {
-    struct ble_npl_event *ev;
+    struct ble_npl_event *ev = NULL;
     BaseType_t ret;
 
-    ret = xQueueReceive(evq->q, &ev, portMAX_DELAY);
-    assert(ret == pdPASS);
+    ret = xQueueReceive(evq->q, &ev, tmo);
+    assert(ret == pdPASS || ret == errQUEUE_EMPTY);
 
-    ev->queued = false;
+    if (ev) {
+        ev->queued = false;
+    }
 
     return ev;
 }
 
+struct ble_npl_event *
+npl_freertos_eventq_get(struct ble_npl_eventq *evq)
+{
+    return npl_freertos_eventq_get_tmo(evq, portMAX_DELAY);
+}
+
 void
 npl_freertos_eventq_put(struct ble_npl_eventq *evq, struct ble_npl_event *ev)
 {
@@ -281,6 +289,26 @@ npl_freertos_callout_reset(struct ble_npl_callout *co, ble_npl_time_t ticks)
     return BLE_NPL_OK;
 }
 
+ble_npl_time_t
+npl_freertos_callout_remaining_ticks(struct ble_npl_callout *co,
+                                     ble_npl_time_t now)
+{
+    ble_npl_time_t rt;
+    uint32_t exp = xTimerGetExpiryTime(co->handle);
+
+    taskENTER_CRITICAL();
+
+    if (exp > now) {
+        rt = exp - now;
+    } else {
+        return 0;
+    }
+
+    taskEXIT_CRITICAL();
+
+    return rt;
+}
+
 ble_npl_error_t
 npl_freertos_time_ms_to_ticks(uint32_t ms, ble_npl_time_t *out_ticks)
 {
diff --git a/porting/npl/mynewt/include/nimble/nimble_npl_os.h b/porting/npl/mynewt/include/nimble/nimble_npl_os.h
index 9b825ddee..f7a47dd51 100644
--- a/porting/npl/mynewt/include/nimble/nimble_npl_os.h
+++ b/porting/npl/mynewt/include/nimble/nimble_npl_os.h
@@ -82,6 +82,12 @@ ble_npl_eventq_init(struct ble_npl_eventq *evq)
     os_eventq_init(&evq->evq);
 }
 
+static inline struct ble_npl_event *
+ble_npl_eventq_get_tmo(struct ble_npl_eventq *evq, ble_npl_time_t tmo)
+{
+    return (struct ble_npl_event *)os_eventq_poll((struct os_eventq **)&evq, 1, tmo);
+}
+
 static inline struct ble_npl_event *
 ble_npl_eventq_get(struct ble_npl_eventq *evq)
 {
@@ -107,6 +113,12 @@ ble_npl_eventq_run(struct ble_npl_eventq *evq)
     os_eventq_run(&evq->evq);
 }
 
+static inline int
+ble_npl_eventq_is_empty(struct ble_npl_eventq *evq)
+{
+    return STAILQ_EMPTY(&evq->evq.evq_list);
+}
+
 static inline void
 ble_npl_event_init(struct ble_npl_event *ev, ble_npl_event_fn *fn,
                    void *arg)
@@ -208,6 +220,20 @@ ble_npl_callout_get_ticks(struct ble_npl_callout *co)
     return co->co.c_ticks;
 }
 
+static inline ble_npl_time_t
+ble_npl_callout_remaining_ticks(struct ble_npl_callout *co,
+                                ble_npl_time_t time)
+{
+    return os_callout_remaining_ticks(&co->co, time);
+}
+
+static inline void
+ble_npl_callout_set_arg(struct ble_npl_callout *co,
+                        void *arg)
+{
+    co->co.c_ev.ev_arg = arg;
+}
+
 static inline uint32_t
 ble_npl_time_get(void)
 {
@@ -238,6 +264,12 @@ ble_npl_time_ticks_to_ms32(ble_npl_time_t ticks)
     return os_time_ticks_to_ms32(ticks);
 }
 
+static inline void
+ble_npl_time_delay(ble_npl_time_t ticks)
+{
+    return os_time_delay(ticks);
+}
+
 static inline uint32_t
 ble_npl_hw_enter_critical(void)
 {