diff --git a/components/bt/CMakeLists.txt b/components/bt/CMakeLists.txt
index 2588d0f5b35..6cec63b4682 100644
--- a/components/bt/CMakeLists.txt
+++ b/components/bt/CMakeLists.txt
@@ -869,7 +869,6 @@ if(CONFIG_BT_ENABLED)
                 "host/nimble/nimble/porting/nimble/src/nimble_port.c"
                 "host/nimble/nimble/porting/npl/freertos/src/nimble_port_freertos.c"
                 "host/nimble/port/src/nvs_port.c"
-                "host/nimble/port/src/esp_nimble_mem.c"
             )
 
             list(APPEND include_dirs
diff --git a/components/bt/host/bluedroid/hci/include/hci/hci_hal.h b/components/bt/host/bluedroid/hci/include/hci/hci_hal.h
index f50bef28cd4..aec926b6afb 100644
--- a/components/bt/host/bluedroid/hci/include/hci/hci_hal.h
+++ b/components/bt/host/bluedroid/hci/include/hci/hci_hal.h
@@ -24,7 +24,9 @@
 #include "common/bt_target.h"
 #include "osi/pkt_queue.h"
 #include "stack/bt_types.h"
-
+#if ((BT_CONTROLLER_INCLUDED == TRUE) && SOC_ESP_NIMBLE_CONTROLLER)
+#include "os/os_mbuf.h"
+#endif
 typedef enum {
     DATA_TYPE_COMMAND = 1,
     DATA_TYPE_ACL     = 2,
@@ -85,6 +87,11 @@ typedef struct hci_hal_t {
 
 // Gets the correct hal implementation, as compiled for.
 const hci_hal_t *hci_hal_h4_get_interface(void);
+#if ((BT_CONTROLLER_INCLUDED == TRUE) && SOC_ESP_NIMBLE_CONTROLLER)
+int ble_hs_hci_rx_evt(uint8_t *hci_ev, void *arg);
+
+int ble_hs_rx_data(struct os_mbuf *om, void *arg);
+#endif
 
 
 #endif /* _HCI_HAL_H */
diff --git a/components/bt/host/nimble/port/include/esp_nimble_mem.h b/components/bt/host/nimble/port/include/esp_nimble_mem.h
index dd60c741cfe..31d9557a094 100644
--- a/components/bt/host/nimble/port/include/esp_nimble_mem.h
+++ b/components/bt/host/nimble/port/include/esp_nimble_mem.h
@@ -13,95 +13,9 @@
 extern "C" {
 #endif
 
-void *nimble_mem_malloc(size_t size);
-
-void *nimble_mem_calloc(size_t n, size_t size);
-
-void nimble_mem_free(void *ptr);
-
-#if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-size_t nimble_mem_used_size_get(void);
-#endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-
-#if CONFIG_BT_NIMBLE_MEM_DEBUG
-/**
- * @brief Initialize NimBLE memory debug module
- */
-void nimble_mem_dbg_init(void);
-
-/**
- * @brief Record memory allocation information
- *
- * @param p     Pointer to allocated memory
- * @param size  Size of allocation
- * @param func  Function name where allocation occurred
- * @param line  Line number where allocation occurred
- */
-void nimble_mem_dbg_record(void *p, int size, const char *func, int line);
-
-/**
- * @brief Clean up memory allocation record
- *
- * @param p     Pointer to memory being freed
- * @param func  Function name where free occurred
- * @param line  Line number where free occurred
- */
-void nimble_mem_dbg_clean(void *p, const char *func, int line);
-
-/**
- * @brief Display all memory debug information
- */
-void nimble_mem_dbg_show(void);
-
-/**
- * @brief Get maximum memory size used
- *
- * @return Maximum memory size in bytes
- */
-uint32_t nimble_mem_dbg_get_max_size(void);
-
-/**
- * @brief Get current memory size in use
- *
- * @return Current memory size in bytes
- */
-uint32_t nimble_mem_dbg_get_current_size(void);
-
-/**
- * @brief Start tracking memory usage for a specific section
- *
- * @param index Section index (0 to NIMBLE_MEM_DBG_MAX_SECTION_NUM-1)
- */
-void nimble_mem_dbg_set_section_start(uint8_t index);
-
-/**
- * @brief Stop tracking memory usage for a specific section
- *
- * @param index Section index (0 to NIMBLE_MEM_DBG_MAX_SECTION_NUM-1)
- */
-void nimble_mem_dbg_set_section_end(uint8_t index);
-
-/**
- * @brief Get maximum memory size used in a specific section
- *
- * @param index Section index (0 to NIMBLE_MEM_DBG_MAX_SECTION_NUM-1)
- * @return Maximum memory size in bytes for this section
- */
-uint32_t nimble_mem_dbg_get_max_size_section(uint8_t index);
-
-/**
- * @brief Reallocate memory with debug tracking
- *
- * @param ptr   Pointer to memory to reallocate
- * @param new_size New size of allocation
- * @param func  Function name where realloc occurred
- * @param line  Line number where realloc occurred
- * @return Pointer to reallocated memory
- */
-void *nimble_mem_dbg_realloc(void *ptr, size_t new_size, const char *func, int line);
-
-#endif // CONFIG_BT_NIMBLE_MEM_DEBUG
+// #pragma message "This file should be replaced with bt_osi_mem.h, used here for compatibility"
 
+#include "bt_osi_mem.h"
 
 #if CONFIG_BT_NIMBLE_MEM_DEBUG
 
@@ -109,7 +23,7 @@ void *nimble_mem_dbg_realloc(void *ptr, size_t new_size, const char *func, int l
 ({                                                              \
     void *p;                                                    \
     do {                                                        \
-        p = nimble_mem_malloc(size);                            \
+        p = bt_osi_mem_malloc(size);                            \
         nimble_mem_dbg_record(p, size, __func__, __LINE__);     \
     } while (0);                                                \
     p;                                                          \
@@ -119,7 +33,7 @@ void *nimble_mem_dbg_realloc(void *ptr, size_t new_size, const char *func, int l
 ({                                                              \
     void *p;                                                    \
     do {                                                        \
-        p = nimble_mem_calloc(count, size);                     \
+        p = bt_osi_mem_calloc(count, size);                     \
         nimble_mem_dbg_record(p, (count) * (size), __func__, __LINE__); \
     } while (0);                                                \
     p;                                                          \
@@ -135,18 +49,18 @@ void *nimble_mem_dbg_realloc(void *ptr, size_t new_size, const char *func, int l
 })
 
 #define nimble_platform_mem_free(ptr)                            \
-do {                                                             \
-    void *tmp_ptr = (void *)(ptr);                               \
+do {                                                              \
+    void *tmp_ptr = (void *)(ptr);                                \
     nimble_mem_dbg_clean(tmp_ptr, __func__, __LINE__);           \
-    nimble_mem_free(tmp_ptr);                                    \
+    bt_osi_mem_free(tmp_ptr);                                     \
 } while (0)
 
 #else
 
-#define nimble_platform_mem_malloc nimble_mem_malloc
-#define nimble_platform_mem_calloc nimble_mem_calloc
+#define nimble_platform_mem_malloc bt_osi_mem_malloc
+#define nimble_platform_mem_calloc bt_osi_mem_calloc
 #define nimble_platform_mem_realloc realloc
-#define nimble_platform_mem_free nimble_mem_free
+#define nimble_platform_mem_free bt_osi_mem_free
 
 #endif // CONFIG_BT_NIMBLE_MEM_DEBUG
 
diff --git a/components/bt/host/nimble/port/src/esp_nimble_mem.c b/components/bt/host/nimble/port/src/esp_nimble_mem.c
deleted file mode 100644
index a2177686684..00000000000
--- a/components/bt/host/nimble/port/src/esp_nimble_mem.c
+++ /dev/null
@@ -1,340 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-
-#include "esp_attr.h"
-#include "esp_heap_caps.h"
-#include "sdkconfig.h"
-#include "esp_log.h"
-#include <assert.h>
-
-static uint8_t log_count;
-#if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-static size_t host_mem_used_size = 0;
-#endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-
-#if CONFIG_BT_NIMBLE_MEM_DEBUG
-
-#define NIMBLE_MEM_DBG_INFO_MAX    (1024*3)
-typedef struct {
-    void *p;
-    int size;
-    const char *func;
-    int line;
-} nimble_mem_dbg_info_t;
-
-static uint32_t nimble_mem_dbg_count = 0;
-static nimble_mem_dbg_info_t nimble_mem_dbg_info[NIMBLE_MEM_DBG_INFO_MAX];
-static uint32_t nimble_mem_dbg_current_size = 0;
-static uint32_t nimble_mem_dbg_max_size = 0;
-
-#define NIMBLE_MEM_DBG_MAX_SECTION_NUM 5
-typedef struct {
-    bool used;
-    uint32_t max_size;
-} nimble_mem_dbg_max_size_section_t;
-static nimble_mem_dbg_max_size_section_t nimble_mem_dbg_max_size_section[NIMBLE_MEM_DBG_MAX_SECTION_NUM];
-
-void nimble_mem_dbg_init(void)
-{
-    int i;
-
-    for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
-        nimble_mem_dbg_info[i].p = NULL;
-        nimble_mem_dbg_info[i].size = 0;
-        nimble_mem_dbg_info[i].func = NULL;
-        nimble_mem_dbg_info[i].line = 0;
-    }
-    nimble_mem_dbg_count = 0;
-    nimble_mem_dbg_current_size = 0;
-    nimble_mem_dbg_max_size = 0;
-
-    for (i = 0; i < NIMBLE_MEM_DBG_MAX_SECTION_NUM; i++){
-        nimble_mem_dbg_max_size_section[i].used = false;
-        nimble_mem_dbg_max_size_section[i].max_size = 0;
-    }
-}
-
-void nimble_mem_dbg_record(void *p, int size, const char *func, int line)
-{
-    int i;
-
-    if (!p || size == 0) {
-        ESP_LOGE("BT_NIMBLE_MEM", "%s invalid !!\n", __func__);
-        return;
-    }
-
-    for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
-        if (nimble_mem_dbg_info[i].p == NULL) {
-            nimble_mem_dbg_info[i].p = p;
-            nimble_mem_dbg_info[i].size = size;
-            nimble_mem_dbg_info[i].func = func;
-            nimble_mem_dbg_info[i].line = line;
-            nimble_mem_dbg_count++;
-            break;
-        }
-    }
-
-    if (i >= NIMBLE_MEM_DBG_INFO_MAX) {
-        ESP_LOGE("BT_NIMBLE_MEM", "%s full %s %d !!\n", __func__, func, line);
-        return;
-    }
-
-    nimble_mem_dbg_current_size += size;
-    if(nimble_mem_dbg_max_size < nimble_mem_dbg_current_size) {
-        nimble_mem_dbg_max_size = nimble_mem_dbg_current_size;
-    }
-
-    for (i = 0; i < NIMBLE_MEM_DBG_MAX_SECTION_NUM; i++){
-        if (nimble_mem_dbg_max_size_section[i].used) {
-            if(nimble_mem_dbg_max_size_section[i].max_size < nimble_mem_dbg_current_size) {
-                nimble_mem_dbg_max_size_section[i].max_size = nimble_mem_dbg_current_size;
-            }
-        }
-    }
-}
-
-void nimble_mem_dbg_clean(void *p, const char *func, int line)
-{
-    int i;
-
-    if (!p) {
-        ESP_LOGE("BT_NIMBLE_MEM", "%s %d free->%p invalid\n", func, line, p);
-        return;
-    }
-
-    for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
-        if (nimble_mem_dbg_info[i].p == p) {
-            nimble_mem_dbg_current_size -= nimble_mem_dbg_info[i].size;
-            nimble_mem_dbg_info[i].p = NULL;
-            nimble_mem_dbg_info[i].size = 0;
-            nimble_mem_dbg_info[i].func = NULL;
-            nimble_mem_dbg_info[i].line = 0;
-            nimble_mem_dbg_count--;
-            break;
-        }
-    }
-
-    if (i >= NIMBLE_MEM_DBG_INFO_MAX) {
-        ESP_LOGE("BT_NIMBLE_MEM", "%s not found %s %d !!\n", __func__, func, line);
-    }
-}
-
-void nimble_mem_dbg_show(void)
-{
-    int i;
-
-    for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
-        if (nimble_mem_dbg_info[i].p || nimble_mem_dbg_info[i].size != 0 ) {
-            ESP_LOGE("BT_NIMBLE_MEM", "--> p %p, s %d, f %s, l %d\n",
-                     nimble_mem_dbg_info[i].p, nimble_mem_dbg_info[i].size,
-                     nimble_mem_dbg_info[i].func, nimble_mem_dbg_info[i].line);
-        }
-    }
-    ESP_LOGE("BT_NIMBLE_MEM", "--> count %ld\n", nimble_mem_dbg_count);
-    ESP_LOGE("BT_NIMBLE_MEM", "--> size %ldB\n--> max size %ldB\n",
-             nimble_mem_dbg_current_size, nimble_mem_dbg_max_size);
-}
-
-uint32_t nimble_mem_dbg_get_max_size(void)
-{
-    return nimble_mem_dbg_max_size;
-}
-
-uint32_t nimble_mem_dbg_get_current_size(void)
-{
-    return nimble_mem_dbg_current_size;
-}
-
-void nimble_mem_dbg_set_section_start(uint8_t index)
-{
-    if (index >= NIMBLE_MEM_DBG_MAX_SECTION_NUM) {
-        ESP_LOGE("BT_NIMBLE_MEM", "Then range of index should be between 0 and %d, current index is %d.\n",
-                            NIMBLE_MEM_DBG_MAX_SECTION_NUM - 1, index);
-        return;
-    }
-
-    if (nimble_mem_dbg_max_size_section[index].used) {
-        ESP_LOGW("BT_NIMBLE_MEM", "This index(%d) has been started, restart it.\n", index);
-    }
-
-    nimble_mem_dbg_max_size_section[index].used = true;
-    nimble_mem_dbg_max_size_section[index].max_size = nimble_mem_dbg_current_size;
-}
-
-void nimble_mem_dbg_set_section_end(uint8_t index)
-{
-    if (index >= NIMBLE_MEM_DBG_MAX_SECTION_NUM) {
-        ESP_LOGE("BT_NIMBLE_MEM", "Then range of index should be between 0 and %d, current index is %d.\n",
-                            NIMBLE_MEM_DBG_MAX_SECTION_NUM - 1, index);
-        return;
-    }
-
-    if (!nimble_mem_dbg_max_size_section[index].used) {
-        ESP_LOGE("BT_NIMBLE_MEM", "This index(%d) has not been started.\n", index);
-        return;
-    }
-
-    nimble_mem_dbg_max_size_section[index].used = false;
-}
-
-uint32_t nimble_mem_dbg_get_max_size_section(uint8_t index)
-{
-    if (index >= NIMBLE_MEM_DBG_MAX_SECTION_NUM){
-        ESP_LOGE("BT_NIMBLE_MEM", "Then range of index should be between 0 and %d, current index is %d.\n",
-                            NIMBLE_MEM_DBG_MAX_SECTION_NUM - 1, index);
-        return 0;
-    }
-
-    return nimble_mem_dbg_max_size_section[index].max_size;
-}
-
-void *nimble_mem_dbg_realloc(void *ptr, size_t new_size, const char *func, int line)
-{
-    size_t old_size = 0;
-    int i;
-
-    void *new_ptr = realloc(ptr, new_size);
-    if (new_ptr == NULL && new_size > 0) {
-        // realloc failed, keep old ptr record
-        return NULL;
-    }
-
-    // Find and clean old record if ptr is not NULL
-    if (ptr != NULL) {
-        for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
-            if (nimble_mem_dbg_info[i].p == ptr) {
-                old_size = nimble_mem_dbg_info[i].size;
-                nimble_mem_dbg_current_size -= old_size;
-
-                nimble_mem_dbg_info[i].p = NULL;
-                nimble_mem_dbg_info[i].size = 0;
-                nimble_mem_dbg_info[i].func = NULL;
-                nimble_mem_dbg_info[i].line = 0;
-                nimble_mem_dbg_count--;
-                break;
-            }
-        }
-    }
-
-    // Record the new allocation if new_size > 0
-    if (new_ptr != NULL && new_size > 0) {
-        for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
-            if (nimble_mem_dbg_info[i].p == NULL) {
-                nimble_mem_dbg_info[i].p = new_ptr;
-                nimble_mem_dbg_info[i].size = new_size;
-                nimble_mem_dbg_info[i].func = func;
-                nimble_mem_dbg_info[i].line = line;
-                nimble_mem_dbg_count++;
-                break;
-            }
-        }
-
-        if (i >= NIMBLE_MEM_DBG_INFO_MAX) {
-            ESP_LOGE("BT_NIMBLE_MEM", "%s full %s %d !!\n", __func__, func, line);
-        }
-
-        nimble_mem_dbg_current_size += new_size;
-        if (nimble_mem_dbg_max_size < nimble_mem_dbg_current_size) {
-            nimble_mem_dbg_max_size = nimble_mem_dbg_current_size;
-        }
-
-        for (i = 0; i < NIMBLE_MEM_DBG_MAX_SECTION_NUM; i++) {
-            if (nimble_mem_dbg_max_size_section[i].used &&
-                nimble_mem_dbg_max_size_section[i].max_size < nimble_mem_dbg_current_size) {
-                nimble_mem_dbg_max_size_section[i].max_size = nimble_mem_dbg_current_size;
-            }
-        }
-    }
-
-    return new_ptr;
-}
-#endif // CONFIG_BT_NIMBLE_MEM_DEBUG
-
-#if !CONFIG_BT_NIMBLE_LOW_SPEED_MODE
-IRAM_ATTR
-#endif
-void *nimble_mem_malloc(size_t size)
-{
-    void *mem = NULL;
-#ifdef CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_INTERNAL
-    mem = heap_caps_malloc(size, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
-#elif CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_EXTERNAL
-    mem =  heap_caps_malloc(size, MALLOC_CAP_SPIRAM|MALLOC_CAP_8BIT);
-#elif CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_IRAM_8BIT
-    mem =  heap_caps_malloc_prefer(size, 2, MALLOC_CAP_INTERNAL|MALLOC_CAP_IRAM_8BIT, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
-#else
-    mem =  malloc(size);
-#endif
-    if (!mem) {
-        log_count ++;
-        if ((log_count % 100) == 0) {
-            ESP_EARLY_LOGI("ESP_LOG_INFO","malloc failed (size %zu)",size);
-            log_count = 0;
-        }
-        assert(mem != NULL);
-    }
-#if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-    if(mem) {
-        host_mem_used_size += heap_caps_get_allocated_size(mem);
-    }
-#endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-    return mem;
-}
-
-#if !CONFIG_BT_NIMBLE_LOW_SPEED_MODE
-IRAM_ATTR
-#endif
-void *nimble_mem_calloc(size_t n, size_t size)
-{
-    void *mem = NULL;
-#ifdef CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_INTERNAL
-    mem = heap_caps_calloc(n, size, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
-#elif CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_EXTERNAL
-    mem = heap_caps_calloc(n, size, MALLOC_CAP_SPIRAM|MALLOC_CAP_8BIT);
-#elif CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_IRAM_8BIT
-    mem = heap_caps_calloc_prefer(n, size, 2, MALLOC_CAP_INTERNAL|MALLOC_CAP_IRAM_8BIT, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
-#else
-    mem = calloc(n, size);
-#endif
-#if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-    if(mem) {
-        host_mem_used_size += heap_caps_get_allocated_size(mem);
-    }
-#endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-    return mem;
-}
-
-#if !CONFIG_BT_NIMBLE_LOW_SPEED_MODE
-IRAM_ATTR
-#endif
-void nimble_mem_free(void *ptr)
-{
-#if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-    if (ptr) {
-        size_t alloc_size = heap_caps_get_allocated_size(ptr);
-        // assert(host_mem_used_size >= alloc_size);
-        host_mem_used_size -= alloc_size;
-    }
-#endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-    if (ptr) {
-        heap_caps_free(ptr);
-    }
-}
-
-#if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-size_t
-nimble_mem_used_size_get(void)
-{
-    return host_mem_used_size;
-}
-
-#if CONFIG_BT_NIMBLE_ENABLED
-uint32_t esp_host_used_heap_size_get(void)
-{
-    return nimble_mem_used_size_get();
-}
-#endif // CONFIG_BT_NIMBLE_ENABLED
-#endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
diff --git a/components/bt/porting/include/bt_osi_mem.h b/components/bt/porting/include/bt_osi_mem.h
index fc35c482bab..d19b3cf5c04 100644
--- a/components/bt/porting/include/bt_osi_mem.h
+++ b/components/bt/porting/include/bt_osi_mem.h
@@ -10,21 +10,101 @@
 #include "esp_attr.h"
 #include "esp_heap_caps.h"
 
-
 void *bt_osi_mem_malloc(size_t size);
 
-void bt_osi_mem_free(void *ptr);
+void *bt_osi_mem_calloc(size_t n, size_t size);
 
 void *bt_osi_mem_malloc_internal(size_t size);
 
 void *bt_osi_mem_calloc_internal(size_t n, size_t size);
 
-void bt_osi_mem_free_internal(void *ptr);
+void bt_osi_mem_free(void *ptr);
 
+void bt_osi_mem_free_internal(void *ptr);
 #if CONFIG_BT_LE_MEM_CHECK_ENABLED
 void bt_osi_mem_count_limit_set(uint16_t count_limit);
 #endif // CONFIG_BT_LE_MEM_CHECK_ENABLED
 
 #if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
 size_t bt_osi_mem_internal_used_size_get(void);
+size_t bt_osi_mem_used_size_get(void);
 #endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
+
+#if CONFIG_BT_NIMBLE_MEM_DEBUG
+/**
+ * @brief Initialize NimBLE memory debug module
+ */
+void nimble_mem_dbg_init(void);
+
+/**
+ * @brief Record memory allocation information
+ *
+ * @param p     Pointer to allocated memory
+ * @param size  Size of allocation
+ * @param func  Function name where allocation occurred
+ * @param line  Line number where allocation occurred
+ */
+void nimble_mem_dbg_record(void *p, int size, const char *func, int line);
+
+/**
+ * @brief Clean up memory allocation record
+ *
+ * @param p     Pointer to memory being freed
+ * @param func  Function name where free occurred
+ * @param line  Line number where free occurred
+ */
+void nimble_mem_dbg_clean(void *p, const char *func, int line);
+
+/**
+ * @brief Display all memory debug information
+ */
+void nimble_mem_dbg_show(void);
+
+/**
+ * @brief Get maximum memory size used
+ *
+ * @return Maximum memory size in bytes
+ */
+uint32_t nimble_mem_dbg_get_max_size(void);
+
+/**
+ * @brief Get current memory size in use
+ *
+ * @return Current memory size in bytes
+ */
+uint32_t nimble_mem_dbg_get_current_size(void);
+
+/**
+ * @brief Start tracking memory usage for a specific section
+ *
+ * @param index Section index (0 to NIMBLE_MEM_DBG_MAX_SECTION_NUM-1)
+ */
+void nimble_mem_dbg_set_section_start(uint8_t index);
+
+/**
+ * @brief Stop tracking memory usage for a specific section
+ *
+ * @param index Section index (0 to NIMBLE_MEM_DBG_MAX_SECTION_NUM-1)
+ */
+void nimble_mem_dbg_set_section_end(uint8_t index);
+
+/**
+ * @brief Get maximum memory size used in a specific section
+ *
+ * @param index Section index (0 to NIMBLE_MEM_DBG_MAX_SECTION_NUM-1)
+ * @return Maximum memory size in bytes for this section
+ */
+uint32_t nimble_mem_dbg_get_max_size_section(uint8_t index);
+
+/**
+ * @brief Reallocate memory with debug tracking
+ *
+ * @param ptr   Pointer to memory to reallocate
+ * @param new_size New size of allocation
+ * @param func  Function name where realloc occurred
+ * @param line  Line number where realloc occurred
+ * @return Pointer to reallocated memory
+ */
+void *nimble_mem_dbg_realloc(void *ptr, size_t new_size, const char *func, int line);
+
+#endif // CONFIG_BT_NIMBLE_MEM_DEBUG
diff --git a/components/bt/porting/mem/bt_osi_mem.c b/components/bt/porting/mem/bt_osi_mem.c
index 537dc8def1e..ba670d900f1 100644
--- a/components/bt/porting/mem/bt_osi_mem.c
+++ b/components/bt/porting/mem/bt_osi_mem.c
@@ -10,17 +10,311 @@
 #include "esp_log.h"
 #include <assert.h>
 
+static uint8_t log_count;
 #if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
 static size_t controller_mem_used_size = 0;
+static size_t host_mem_used_size = 0;
 #endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-
 #if CONFIG_BT_LE_MEM_CHECK_ENABLED
 static uint16_t mem_count_limit = 0;
 static uint16_t curr_mem_count;
 #endif // CONFIG_BT_LE_MEM_CHECK_ENABLED
 
-void *
-bt_osi_mem_malloc_internal(size_t size)
+#if CONFIG_BT_NIMBLE_MEM_DEBUG
+
+#define NIMBLE_MEM_DBG_INFO_MAX    1024*3
+typedef struct {
+    void *p;
+    int size;
+    const char *func;
+    int line;
+} nimble_mem_dbg_info_t;
+
+static uint32_t nimble_mem_dbg_count = 0;
+static nimble_mem_dbg_info_t nimble_mem_dbg_info[NIMBLE_MEM_DBG_INFO_MAX];
+static uint32_t nimble_mem_dbg_current_size = 0;
+static uint32_t nimble_mem_dbg_max_size = 0;
+
+#define NIMBLE_MEM_DBG_MAX_SECTION_NUM 5
+typedef struct {
+    bool used;
+    uint32_t max_size;
+} nimble_mem_dbg_max_size_section_t;
+static nimble_mem_dbg_max_size_section_t nimble_mem_dbg_max_size_section[NIMBLE_MEM_DBG_MAX_SECTION_NUM];
+
+void nimble_mem_dbg_init(void)
+{
+    int i;
+
+    for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
+        nimble_mem_dbg_info[i].p = NULL;
+        nimble_mem_dbg_info[i].size = 0;
+        nimble_mem_dbg_info[i].func = NULL;
+        nimble_mem_dbg_info[i].line = 0;
+    }
+    nimble_mem_dbg_count = 0;
+    nimble_mem_dbg_current_size = 0;
+    nimble_mem_dbg_max_size = 0;
+
+    for (i = 0; i < NIMBLE_MEM_DBG_MAX_SECTION_NUM; i++){
+        nimble_mem_dbg_max_size_section[i].used = false;
+        nimble_mem_dbg_max_size_section[i].max_size = 0;
+    }
+}
+
+void nimble_mem_dbg_record(void *p, int size, const char *func, int line)
+{
+    int i;
+
+    if (!p || size == 0) {
+        ESP_LOGE("BT_NIMBLE_MEM", "%s invalid !!\n", __func__);
+        return;
+    }
+
+    for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
+        if (nimble_mem_dbg_info[i].p == NULL) {
+            nimble_mem_dbg_info[i].p = p;
+            nimble_mem_dbg_info[i].size = size;
+            nimble_mem_dbg_info[i].func = func;
+            nimble_mem_dbg_info[i].line = line;
+            nimble_mem_dbg_count++;
+            break;
+        }
+    }
+
+    if (i >= NIMBLE_MEM_DBG_INFO_MAX) {
+        ESP_LOGE("BT_NIMBLE_MEM", "%s full %s %d !!\n", __func__, func, line);
+    }
+
+    nimble_mem_dbg_current_size += size;
+    if(nimble_mem_dbg_max_size <= nimble_mem_dbg_current_size) {
+        nimble_mem_dbg_max_size = nimble_mem_dbg_current_size;
+    }
+
+    for (i = 0; i < NIMBLE_MEM_DBG_MAX_SECTION_NUM; i++){
+        if (nimble_mem_dbg_max_size_section[i].used) {
+            if(nimble_mem_dbg_max_size_section[i].max_size < nimble_mem_dbg_current_size) {
+                nimble_mem_dbg_max_size_section[i].max_size = nimble_mem_dbg_current_size;
+            }
+        }
+    }
+}
+
+void nimble_mem_dbg_clean(void *p, const char *func, int line)
+{
+    int i;
+
+    if (!p) {
+        ESP_LOGE("BT_NIMBLE_MEM", "%s %d free->%p invalid\n", func, line, p);
+        return;
+    }
+
+    for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
+        if (nimble_mem_dbg_info[i].p == p) {
+            nimble_mem_dbg_current_size -= nimble_mem_dbg_info[i].size;
+            nimble_mem_dbg_info[i].p = NULL;
+            nimble_mem_dbg_info[i].size = 0;
+            nimble_mem_dbg_info[i].func = NULL;
+            nimble_mem_dbg_info[i].line = 0;
+            nimble_mem_dbg_count--;
+            break;
+        }
+    }
+
+    if (i >= NIMBLE_MEM_DBG_INFO_MAX) {
+        ESP_LOGE("BT_NIMBLE_MEM", "%s full %s %d !!\n", __func__, func, line);
+    }
+}
+
+void nimble_mem_dbg_show(void)
+{
+    int i;
+
+    for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
+        if (nimble_mem_dbg_info[i].p || nimble_mem_dbg_info[i].size != 0 ) {
+            ESP_LOGE("BT_NIMBLE_MEM", "--> p %p, s %d, f %s, l %d\n",
+                     nimble_mem_dbg_info[i].p, nimble_mem_dbg_info[i].size,
+                     nimble_mem_dbg_info[i].func, nimble_mem_dbg_info[i].line);
+        }
+    }
+    ESP_LOGE("BT_NIMBLE_MEM", "--> count %ld\n", nimble_mem_dbg_count);
+    ESP_LOGE("BT_NIMBLE_MEM", "--> size %ldB\n--> max size %ldB\n",
+             nimble_mem_dbg_current_size, nimble_mem_dbg_max_size);
+}
+
+uint32_t nimble_mem_dbg_get_max_size(void)
+{
+    return nimble_mem_dbg_max_size;
+}
+
+uint32_t nimble_mem_dbg_get_current_size(void)
+{
+    return nimble_mem_dbg_current_size;
+}
+
+void nimble_mem_dbg_set_section_start(uint8_t index)
+{
+    if (index >= NIMBLE_MEM_DBG_MAX_SECTION_NUM) {
+        ESP_LOGE("BT_NIMBLE_MEM", "Then range of index should be between 0 and %d, current index is %d.\n",
+                            NIMBLE_MEM_DBG_MAX_SECTION_NUM - 1, index);
+        return;
+    }
+
+    if (nimble_mem_dbg_max_size_section[index].used) {
+        ESP_LOGW("BT_NIMBLE_MEM", "This index(%d) has been started, restart it.\n", index);
+    }
+
+    nimble_mem_dbg_max_size_section[index].used = true;
+    nimble_mem_dbg_max_size_section[index].max_size = nimble_mem_dbg_current_size;
+}
+
+void nimble_mem_dbg_set_section_end(uint8_t index)
+{
+    if (index >= NIMBLE_MEM_DBG_MAX_SECTION_NUM) {
+        ESP_LOGE("BT_NIMBLE_MEM", "Then range of index should be between 0 and %d, current index is %d.\n",
+                            NIMBLE_MEM_DBG_MAX_SECTION_NUM - 1, index);
+        return;
+    }
+
+    if (!nimble_mem_dbg_max_size_section[index].used) {
+        ESP_LOGE("BT_NIMBLE_MEM", "This index(%d) has not been started.\n", index);
+        return;
+    }
+
+    nimble_mem_dbg_max_size_section[index].used = false;
+}
+
+uint32_t nimble_mem_dbg_get_max_size_section(uint8_t index)
+{
+    if (index >= NIMBLE_MEM_DBG_MAX_SECTION_NUM){
+        ESP_LOGE("BT_NIMBLE_MEM", "Then range of index should be between 0 and %d, current index is %d.\n",
+                            NIMBLE_MEM_DBG_MAX_SECTION_NUM - 1, index);
+        return 0;
+    }
+
+    return nimble_mem_dbg_max_size_section[index].max_size;
+}
+
+void *nimble_mem_dbg_realloc(void *ptr, size_t new_size, const char *func, int line)
+{
+    size_t old_size = 0;
+    int i;
+
+    void *new_ptr = realloc(ptr, new_size);
+    if (new_ptr == NULL && new_size > 0) {
+        // realloc failed, keep old ptr record
+        return NULL;
+    }
+
+    // Find and clean old record if ptr is not NULL
+    if (ptr != NULL) {
+        for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
+            if (nimble_mem_dbg_info[i].p == ptr) {
+                old_size = nimble_mem_dbg_info[i].size;
+                nimble_mem_dbg_current_size -= old_size;
+
+                nimble_mem_dbg_info[i].p = NULL;
+                nimble_mem_dbg_info[i].size = 0;
+                nimble_mem_dbg_info[i].func = NULL;
+                nimble_mem_dbg_info[i].line = 0;
+                nimble_mem_dbg_count--;
+                break;
+            }
+        }
+    }
+
+    // Record the new allocation if new_size > 0
+    if (new_ptr != NULL && new_size > 0) {
+        for (i = 0; i < NIMBLE_MEM_DBG_INFO_MAX; i++) {
+            if (nimble_mem_dbg_info[i].p == NULL) {
+                nimble_mem_dbg_info[i].p = new_ptr;
+                nimble_mem_dbg_info[i].size = new_size;
+                nimble_mem_dbg_info[i].func = func;
+                nimble_mem_dbg_info[i].line = line;
+                nimble_mem_dbg_count++;
+                break;
+            }
+        }
+
+        if (i >= NIMBLE_MEM_DBG_INFO_MAX) {
+            ESP_LOGE("BT_NIMBLE_MEM", "%s full %s %d !!\n", __func__, func, line);
+        }
+
+        nimble_mem_dbg_current_size += new_size;
+        if (nimble_mem_dbg_max_size < nimble_mem_dbg_current_size) {
+            nimble_mem_dbg_max_size = nimble_mem_dbg_current_size;
+        }
+
+        for (i = 0; i < NIMBLE_MEM_DBG_MAX_SECTION_NUM; i++) {
+            if (nimble_mem_dbg_max_size_section[i].used &&
+                nimble_mem_dbg_max_size_section[i].max_size < nimble_mem_dbg_current_size) {
+                nimble_mem_dbg_max_size_section[i].max_size = nimble_mem_dbg_current_size;
+            }
+        }
+    }
+
+    return new_ptr;
+}
+#endif // CONFIG_BT_NIMBLE_MEM_DEBUG
+
+#if !CONFIG_BT_NIMBLE_LOW_SPEED_MODE
+IRAM_ATTR
+#endif
+void *bt_osi_mem_malloc(size_t size)
+{
+    void *mem = NULL;
+#ifdef CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_INTERNAL
+    mem = heap_caps_malloc(size, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
+#elif CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_EXTERNAL
+    mem =  heap_caps_malloc(size, MALLOC_CAP_SPIRAM|MALLOC_CAP_8BIT);
+#elif CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_IRAM_8BIT
+    mem =  heap_caps_malloc_prefer(size, 2, MALLOC_CAP_INTERNAL|MALLOC_CAP_IRAM_8BIT, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
+#else
+    mem =  malloc(size);
+#endif
+    if (!mem) {
+        log_count ++;
+        if ((log_count % 100) == 0) {
+            ESP_EARLY_LOGI("ESP_LOG_INFO","malloc failed (size %zu)",size);
+            log_count = 0;
+        }
+       assert(mem != NULL);
+    }
+#if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
+    if(mem) {
+         host_mem_used_size += heap_caps_get_allocated_size(mem);
+    }
+#endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
+    return mem;
+}
+
+#if !CONFIG_BT_NIMBLE_LOW_SPEED_MODE
+IRAM_ATTR
+#endif
+void *bt_osi_mem_calloc(size_t n, size_t size)
+{
+    void *mem = NULL;
+#ifdef CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_INTERNAL
+    mem = heap_caps_calloc(n, size, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
+#elif CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_EXTERNAL
+    mem = heap_caps_calloc(n, size, MALLOC_CAP_SPIRAM|MALLOC_CAP_8BIT);
+#elif CONFIG_BT_NIMBLE_MEM_ALLOC_MODE_IRAM_8BIT
+    mem = heap_caps_calloc_prefer(n, size, 2, MALLOC_CAP_INTERNAL|MALLOC_CAP_IRAM_8BIT, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
+#else
+    mem = calloc(n, size);
+#endif
+#if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
+    if(mem) {
+         host_mem_used_size += heap_caps_get_allocated_size(mem);
+    }
+#endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
+    return mem;
+}
+
+#if !CONFIG_BT_NIMBLE_LOW_SPEED_MODE
+IRAM_ATTR
+#endif
+void *bt_osi_mem_malloc_internal(size_t size)
 {
     void *mem_ptr;
 #if CONFIG_BT_LE_MEM_CHECK_ENABLED
@@ -40,9 +334,10 @@ bt_osi_mem_malloc_internal(size_t size)
     return mem_ptr;
 }
 
-
-void *
-bt_osi_mem_calloc_internal(size_t n, size_t size)
+#if !CONFIG_BT_NIMBLE_LOW_SPEED_MODE
+IRAM_ATTR
+#endif
+void *bt_osi_mem_calloc_internal(size_t n, size_t size)
 {
     void *mem_ptr;
 #if CONFIG_BT_LE_MEM_CHECK_ENABLED
@@ -62,8 +357,10 @@ bt_osi_mem_calloc_internal(size_t n, size_t size)
     return mem_ptr;
 }
 
-void
-bt_osi_mem_free_internal(void *ptr)
+#if !CONFIG_BT_NIMBLE_LOW_SPEED_MODE
+IRAM_ATTR
+#endif
+void bt_osi_mem_free_internal(void *ptr)
 {
 #if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
     if (ptr) {
@@ -77,35 +374,21 @@ bt_osi_mem_free_internal(void *ptr)
     }
 }
 
-void *
-bt_osi_mem_malloc(size_t size)
+#if !CONFIG_BT_NIMBLE_LOW_SPEED_MODE
+IRAM_ATTR
+#endif
+void bt_osi_mem_free(void *ptr)
 {
-    void *mem_ptr;
-
-#if CONFIG_BT_LE_MEM_CHECK_ENABLED
-    if (mem_count_limit) {
-        if (curr_mem_count > mem_count_limit) {
-            return NULL;
-        }
-        curr_mem_count ++;
-    }
-#endif  // CONFIG_BT_LE_MEM_CHECK_ENABLED
-
-    mem_ptr = heap_caps_malloc(size, MALLOC_CAP_INTERNAL|MALLOC_CAP_8BIT);
-
 #if CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-    if (mem_ptr) {
-        controller_mem_used_size += heap_caps_get_allocated_size(mem_ptr);
+    if (ptr) {
+        size_t alloc_size = heap_caps_get_allocated_size(ptr);
+        // assert(host_mem_used_size >= alloc_size);
+        host_mem_used_size -= alloc_size;
     }
 #endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
-
-    return mem_ptr;
-}
-
-void
-bt_osi_mem_free(void *ptr)
-{
-    bt_osi_mem_free_internal(ptr);
+    if (ptr) {
+        heap_caps_free(ptr);
+    }
 }
 
 #if CONFIG_BT_LE_MEM_CHECK_ENABLED
@@ -123,8 +406,21 @@ bt_osi_mem_internal_used_size_get(void)
     return controller_mem_used_size;
 }
 
+size_t
+bt_osi_mem_used_size_get(void)
+{
+    return host_mem_used_size;
+}
+
 uint32_t esp_ble_controller_used_heap_size_get(void)
 {
     return bt_osi_mem_internal_used_size_get();
 }
+
+#if CONFIG_BT_NIMBLE_ENABLED
+uint32_t esp_host_used_heap_size_get(void)
+{
+    return bt_osi_mem_used_size_get();
+}
+#endif // CONFIG_BT_NIMBLE_ENABLED
 #endif // CONFIG_BT_LE_USED_MEM_STATISTICS_ENABLED
diff --git a/components/bt/porting/mem/os_mempool.c b/components/bt/porting/mem/os_mempool.c
index 6f8314c69dc..6893ec4a0e4 100644
--- a/components/bt/porting/mem/os_mempool.c
+++ b/components/bt/porting/mem/os_mempool.c
@@ -513,11 +513,9 @@ os_memblock_get(struct os_mempool *mp)
                 // Should not happen
                 OS_ENTER_CRITICAL(sr);
                 mp->mp_num_free++;
-#if MYNEWT_VAL(MP_BLOCK_REUSED)
                 if (mp->mp_flags & OS_MEMPOOL_F_REUSED) {
                     mp->mp_alloc_blocks--;
                 }
-#endif
                 OS_EXIT_CRITICAL(sr);
             }
         } else if (block) {
diff --git a/components/bt/porting/mem/os_msys_init.c b/components/bt/porting/mem/os_msys_init.c
index c4574ca5ae4..5465e41e535 100644
--- a/components/bt/porting/mem/os_msys_init.c
+++ b/components/bt/porting/mem/os_msys_init.c
@@ -12,6 +12,7 @@
 #include "mem_api.h"
 #include "bt_osi_mem.h"
 #include "esp_err.h"
+#include "esp_nimble_mem.h"
 
 #if CONFIG_BT_NIMBLE_ENABLED
 #include "syscfg/syscfg.h"
@@ -121,13 +122,11 @@ ble_os_msys_ensure_ctx(void)
         return 0;
     }
 
-    os_msys_ctx = bt_osi_mem_malloc(sizeof(*os_msys_ctx));
+    os_msys_ctx = nimble_platform_mem_calloc(1, sizeof(*os_msys_ctx));
     if(!os_msys_ctx) {
         return -1;
     }
 
-    memset(os_msys_ctx, 0, sizeof(*os_msys_ctx));
-
     return 0;
 }
 #endif // !CONFIG_BT_LE_MSYS_INIT_IN_CONTROLLER && CONFIG_BT_NIMBLE_STATIC_TO_DYNAMIC
@@ -231,9 +230,9 @@ os_msys_buf_alloc(void)
 #if CONFIG_BT_NIMBLE_STATIC_TO_DYNAMIC
 #if OS_MSYS_1_BLOCK_COUNT > 0
         if (!os_msys_ctx->init_1_data) {
-            os_msys_ctx->init_1_data = bt_osi_mem_malloc((sizeof(os_membuf_t) * SYSINIT_MSYS_1_MEMPOOL_SIZE));
+            os_msys_ctx->init_1_data = nimble_platform_mem_calloc(1, (sizeof(os_membuf_t) * SYSINIT_MSYS_1_MEMPOOL_SIZE));
             if(!os_msys_ctx->init_1_data){
-                bt_osi_mem_free(os_msys_ctx);
+                nimble_platform_mem_free(os_msys_ctx);
                 os_msys_ctx = NULL;
                 return ESP_FAIL;
             }
@@ -242,13 +241,13 @@ os_msys_buf_alloc(void)
 
 #if OS_MSYS_2_BLOCK_COUNT > 0
       if (!os_msys_ctx->init_2_data) {
-          os_msys_ctx->init_2_data = bt_osi_mem_malloc((sizeof(os_membuf_t) * SYSINIT_MSYS_2_MEMPOOL_SIZE));
+          os_msys_ctx->init_2_data = nimble_platform_mem_calloc(1, (sizeof(os_membuf_t) * SYSINIT_MSYS_2_MEMPOOL_SIZE));
           if(!os_msys_ctx->init_2_data) {
 #if OS_MSYS_1_BLOCK_COUNT > 0
-              bt_osi_mem_free(os_msys_ctx->init_1_data);
+              nimble_platform_mem_free(os_msys_ctx->init_1_data);
               os_msys_ctx->init_1_data = NULL;
 #endif
-              bt_osi_mem_free(os_msys_ctx);
+              nimble_platform_mem_free(os_msys_ctx);
               os_msys_ctx = NULL;
               return ESP_FAIL;
           }
@@ -257,17 +256,17 @@ os_msys_buf_alloc(void)
 #endif
 #else
 #if OS_MSYS_1_BLOCK_COUNT > 0
-    os_msys_init_1_data = (os_membuf_t *)bt_osi_mem_malloc((sizeof(os_membuf_t) * SYSINIT_MSYS_1_MEMPOOL_SIZE));
+    os_msys_init_1_data = (os_membuf_t *)nimble_platform_mem_calloc(1, (sizeof(os_membuf_t) * SYSINIT_MSYS_1_MEMPOOL_SIZE));
     if (!os_msys_init_1_data) {
         return ESP_ERR_NO_MEM;
     }
 #endif
 
 #if OS_MSYS_2_BLOCK_COUNT > 0
-    os_msys_init_2_data = (os_membuf_t *)bt_osi_mem_malloc((sizeof(os_membuf_t) * SYSINIT_MSYS_2_MEMPOOL_SIZE));
+    os_msys_init_2_data = (os_membuf_t *)nimble_platform_mem_calloc(1, (sizeof(os_membuf_t) * SYSINIT_MSYS_2_MEMPOOL_SIZE));
     if (!os_msys_init_2_data) {
 #if OS_MSYS_1_BLOCK_COUNT > 0
-       bt_osi_mem_free(os_msys_init_1_data);
+       nimble_platform_mem_free(os_msys_init_1_data);
        os_msys_init_1_data = NULL;
 #endif
         return ESP_ERR_NO_MEM;
@@ -285,32 +284,32 @@ os_msys_buf_free(void)
     if (os_msys_ctx) {
 #if OS_MSYS_1_BLOCK_COUNT > 0
         if (os_msys_ctx->init_1_data) {
-            bt_osi_mem_free(os_msys_ctx->init_1_data);
+            nimble_platform_mem_free(os_msys_ctx->init_1_data);
             os_msys_ctx->init_1_data = NULL;
         }
         os_mempool_unregister(&os_msys_ctx->init_1_mempool);
 #endif
 #if OS_MSYS_2_BLOCK_COUNT > 0
         if (os_msys_ctx->init_2_data) {
-            bt_osi_mem_free(os_msys_ctx->init_2_data);
+            nimble_platform_mem_free(os_msys_ctx->init_2_data);
             os_msys_ctx->init_2_data = NULL;
         }
         os_mempool_unregister(&os_msys_ctx->init_2_mempool);
 #endif
-        bt_osi_mem_free(os_msys_ctx);
+        nimble_platform_mem_free(os_msys_ctx);
         os_msys_ctx = NULL;
     }
 
 #else
 #if OS_MSYS_1_BLOCK_COUNT > 0
 
-    bt_osi_mem_free(os_msys_init_1_data);
+    nimble_platform_mem_free(os_msys_init_1_data);
     os_msys_init_1_data = NULL;
     os_mempool_unregister(&os_msys_init_1_mempool);
 #endif
 
 #if OS_MSYS_2_BLOCK_COUNT > 0
-    bt_osi_mem_free(os_msys_init_2_data);
+    nimble_platform_mem_free(os_msys_init_2_data);
     os_msys_init_2_data = NULL;
     os_mempool_unregister(&os_msys_init_1_mempool);
 #endif
diff --git a/components/bt/porting/npl/freertos/src/npl_os_freertos.c b/components/bt/porting/npl/freertos/src/npl_os_freertos.c
index d4b8fc883c5..cdcc14f6a3a 100644
--- a/components/bt/porting/npl/freertos/src/npl_os_freertos.c
+++ b/components/bt/porting/npl/freertos/src/npl_os_freertos.c
@@ -323,7 +323,8 @@ IRAM_ATTR npl_freertos_eventq_remove(struct ble_npl_eventq *evq,
             portYIELD_FROM_ISR();
         }
     } else {
-        portENTER_CRITICAL(&ble_port_mutex);
+        portMUX_TYPE ble_npl_mut = portMUX_INITIALIZER_UNLOCKED;
+        portENTER_CRITICAL(&ble_npl_mut);
 
         count = uxQueueMessagesWaiting(eventq->q);
         for (i = 0; i < count; i++) {
@@ -338,7 +339,7 @@ IRAM_ATTR npl_freertos_eventq_remove(struct ble_npl_eventq *evq,
             BLE_LL_ASSERT(ret == pdPASS);
         }
 
-        portEXIT_CRITICAL(&ble_port_mutex);
+        portEXIT_CRITICAL(&ble_npl_mut);
     }
 
     event->queued = 0;
diff --git a/examples/bluetooth/esp_hid_device/main/esp_hid_device_main.c b/examples/bluetooth/esp_hid_device/main/esp_hid_device_main.c
index d0081b843be..4da5f37f67e 100644
--- a/examples/bluetooth/esp_hid_device/main/esp_hid_device_main.c
+++ b/examples/bluetooth/esp_hid_device/main/esp_hid_device_main.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2021-2026 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Unlicense OR CC0-1.0
  */
@@ -966,6 +966,9 @@ void app_main(void)
 
     ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
 	/* Starting nimble task after gatts is initialized*/
-    nimble_port_freertos_init(ble_hid_device_host_task);
+    ret = esp_nimble_enable(ble_hid_device_host_task);
+    if (ret) {
+        ESP_LOGE(TAG, "esp_nimble_enable failed: %d", ret);
+    }
 #endif
 }
diff --git a/examples/bluetooth/esp_hid_host/main/esp_hid_host_main.c b/examples/bluetooth/esp_hid_host/main/esp_hid_host_main.c
index ab9d8aa21eb..8934b60c1aa 100644
--- a/examples/bluetooth/esp_hid_host/main/esp_hid_host_main.c
+++ b/examples/bluetooth/esp_hid_host/main/esp_hid_host_main.c
@@ -1,5 +1,5 @@
 /*
- * SPDX-FileCopyrightText: 2021-2026 Espressif Systems (Shanghai) CO LTD
+ * SPDX-FileCopyrightText: 2021-2024 Espressif Systems (Shanghai) CO LTD
  *
  * SPDX-License-Identifier: Unlicense OR CC0-1.0
  */
@@ -238,7 +238,10 @@ void app_main(void)
 
     ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
 	/* Starting nimble task after gatts is initialized*/
-    nimble_port_freertos_init(ble_hid_host_task);
+    ret = esp_nimble_enable(ble_hid_host_task);
+    if (ret) {
+        ESP_LOGE(TAG, "esp_nimble_enable failed: %d", ret);
+    }
 
     vTaskDelay(200);