ble_mesh: Add mesh example common nvs operations

examples/bluetooth/esp_ble_mesh/components/example_nvs/CMakeLists.txt

@@ -0,0 +1,7 @@
+set(COMPONENT_SRCS "ble_mesh_example_nvs.c")
+
+set(COMPONENT_ADD_INCLUDEDIRS ".")
+
+set(COMPONENT_REQUIRES nvs_flash)
+
+register_component()

examples/bluetooth/esp_ble_mesh/components/example_nvs/ble_mesh_example_nvs.c

@@ -0,0 +1,151 @@
+/*
+   This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+   Unless required by applicable law or agreed to in writing, this
+   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+   CONDITIONS OF ANY KIND, either express or implied.
+*/
+
+#include <stdio.h>
+#include <string.h>
+#include "sdkconfig.h"
+#include "esp_log.h"
+#include "nvs_flash.h"
+
+#define TAG     "EXAMPLE_NVS"
+
+#define NVS_NAME    "mesh_example"
+
+esp_err_t ble_mesh_nvs_open(nvs_handle *handle)
+{
+    esp_err_t err = ESP_OK;
+
+    if (handle == NULL) {
+        ESP_LOGE(TAG, "Open, invalid nvs handle");
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    err = nvs_open(NVS_NAME, NVS_READWRITE, handle);
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Open, nvs_open failed, err %d", err);
+        return err;
+    }
+
+    ESP_LOGI(TAG, "Open namespace done, name \"%s\"", NVS_NAME);
+    return err;
+}
+
+esp_err_t ble_mesh_nvs_store(nvs_handle handle, const char *key, const void *data, size_t length)
+{
+    esp_err_t err = ESP_OK;
+
+    if (key == NULL || data == NULL || length == 0) {
+        ESP_LOGE(TAG, "Store, invalid parameter");
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    err = nvs_set_blob(handle, key, data, length);
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Store, nvs_set_blob failed, err %d", err);
+        return err;
+    }
+
+    err = nvs_commit(handle);
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Store, nvs_commit failed, err %d", err);
+        return err;
+    }
+
+    ESP_LOGI(TAG, "Store, key \"%s\", length %u", key, length);
+    ESP_LOG_BUFFER_HEX("EXAMPLE_NVS: Store, data", data, length);
+    return err;
+}
+
+esp_err_t ble_mesh_nvs_get_length(nvs_handle handle, const char *key, size_t *length)
+{
+    esp_err_t err = ESP_OK;
+
+    if (key == NULL || length == NULL) {
+        ESP_LOGE(TAG, "Get length, invalid parameter");
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    err = nvs_get_blob(handle, key, NULL, length);
+    if (err == ESP_ERR_NVS_NOT_FOUND) {
+        ESP_LOGI(TAG, "Get length, key \"%s\" not exists", key);
+        *length = 0;
+        return ESP_OK;
+    }
+
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Get length, nvs_get_blob failed, err %d", err);
+    } else {
+        ESP_LOGI(TAG, "Get length, key \"%s\", length %u", key, *length);
+    }
+
+    return err;
+}
+
+esp_err_t ble_mesh_nvs_restore(nvs_handle handle, const char *key, void *data, size_t length, bool *exist)
+{
+    esp_err_t err = ESP_OK;
+
+    if (key == NULL || data == NULL || length == 0) {
+        ESP_LOGE(TAG, "Restore, invalid parameter");
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    err = nvs_get_blob(handle, key, data, &length);
+    if (err == ESP_ERR_NVS_NOT_FOUND) {
+        ESP_LOGI(TAG, "Restore, key \"%s\" not exists", key);
+        if (exist) {
+            *exist = false;
+        }
+        return ESP_OK;
+    }
+
+    if (exist) {
+        *exist = true;
+    }
+
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Restore, nvs_get_blob failed, err %d", err);
+    } else {
+        ESP_LOGI(TAG, "Restore, key \"%s\", length %u", key, length);
+        ESP_LOG_BUFFER_HEX("EXAMPLE_NVS: Restore, data", data, length);
+    }
+
+    return err;
+}
+
+esp_err_t ble_mesh_nvs_erase(nvs_handle handle, const char *key)
+{
+    esp_err_t err = ESP_OK;
+
+    if (key) {
+        err = nvs_erase_key(handle, key);
+        if (err == ESP_ERR_NVS_NOT_FOUND) {
+            ESP_LOGI(TAG, "Erase, key \"%s\" not exists", key);
+            return ESP_OK;
+        }
+    } else {
+        err = nvs_erase_all(handle);
+    }
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Erase, nvs_erase_%s failed, err %d", key ? "key" : "all", err);
+        return err;
+    }
+
+    err = nvs_commit(handle);
+    if (err != ESP_OK) {
+        ESP_LOGE(TAG, "Erase, nvs_commit failed, err %d", err);
+        return err;
+    }
+
+    if (key) {
+        ESP_LOGI(TAG, "Erase done, key \"%s\"", key);
+    } else {
+        ESP_LOGI(TAG, "Erase namespace done, name \"%s\"", NVS_NAME);
+    }
+    return err;
+}

examples/bluetooth/esp_ble_mesh/components/example_nvs/ble_mesh_example_nvs.h

@@ -0,0 +1,26 @@
+/*
+   This example code is in the Public Domain (or CC0 licensed, at your option.)
+
+   Unless required by applicable law or agreed to in writing, this
+   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
+   CONDITIONS OF ANY KIND, either express or implied.
+*/
+
+#ifndef _BLE_MESH_EXAMPLE_NVS_H_
+#define _BLE_MESH_EXAMPLE_NVS_H_
+
+#include <stdint.h>
+#include "esp_err.h"
+#include "nvs_flash.h"
+
+esp_err_t ble_mesh_nvs_open(nvs_handle *handle);
+
+esp_err_t ble_mesh_nvs_store(nvs_handle handle, const char *key, const void *data, size_t length);
+
+esp_err_t ble_mesh_nvs_get_length(nvs_handle handle, const char *key, size_t *length);
+
+esp_err_t ble_mesh_nvs_restore(nvs_handle handle, const char *key, void *data, size_t length, bool *exist);
+
+esp_err_t ble_mesh_nvs_erase(nvs_handle handle, const char *key);
+
+#endif /* _BLE_MESH_EXAMPLE_NVS_H_ */

examples/bluetooth/esp_ble_mesh/components/example_nvs/component.mk

@@ -0,0 +1,6 @@
+#
+# "main" pseudo-component makefile.
+#
+# (Uses default behaviour of compiling all source files in directory, adding 'include' to include path.)
+#
+COMPONENT_ADD_INCLUDEDIRS := .