init commit

Signed-off-by: YoungSoo Shin <shinys000114@gmail.com>

main/nconfig/nconfig.c

@@ -0,0 +1,85 @@
+//
+// Created by shinys on 25. 7. 10.
+//
+
+#include "nconfig.h"
+
+#include "nvs_flash.h"
+#include "esp_err.h"
+
+static nvs_handle_t handle;
+
+const static char *keys[NCONFIG_TYPE_MAX] = {
+    [WIFI_SSID] = "wifi_ssid",
+    [WIFI_PASSWORD] = "wifi_pw",
+    [WIFI_MODE] = "wifi_mode",
+    [AP_SSID] = "ap_ssid",
+    [AP_PASSWORD] = "ap_pw",
+    [NETIF_HOSTNAME] = "hostname",
+    [NETIF_IP] = "ip",
+    [NETIF_GATEWAY] = "gw",
+    [NETIF_SUBNET] = "sn",
+    [NETIF_DNS1] = "dns1",
+    [NETIF_DNS2] = "dns2",
+    [NETIF_TYPE] = "dhcp",
+    [UART_BAUD_RATE] = "baudrate",
+};
+
+struct default_value {
+    enum nconfig_type type;
+    const char *value;
+};
+
+struct default_value const default_values[] = {
+    {WIFI_SSID, "HK_BOB_24G"},
+    {WIFI_PASSWORD, ""},
+    {NETIF_TYPE, "dhcp"},
+    {NETIF_HOSTNAME, "odroid"},
+    {UART_BAUD_RATE, "1500000"},
+    {NETIF_DNS1, "8.8.8.8"},
+    {NETIF_DNS2, "8.8.4.4"},
+};
+
+esp_err_t init_nconfig()
+{
+    esp_err_t ret = nvs_open(NCONFIG_NVS_NAMESPACE, NVS_READWRITE, &handle);
+    if (ret != ESP_OK) return ret;
+
+    for (int i = 0; i < sizeof(default_values) / sizeof(default_values[0]); ++i) {
+        // check key is not exist or value is null
+        size_t len = 0;
+        nconfig_get_str_len(default_values[i].type, &len);
+        if (len <= 1) // nconfig_get_str_len return err or value is '\0'
+        {
+            if (nconfig_write(default_values[i].type, default_values[i].value) != ESP_OK) // if nconfig write fail, system panic
+                return ESP_FAIL;
+        }
+    }
+
+    return ESP_OK;
+}
+
+esp_err_t nconfig_write(enum nconfig_type type, const char* data)
+{
+    return nvs_set_str(handle, keys[type], data);
+}
+
+esp_err_t nconfig_delete(enum nconfig_type type)
+{
+    return nvs_erase_key(handle, keys[type]);
+}
+
+esp_err_t nconfig_get_str_len(enum nconfig_type type, size_t *len)
+{
+    return nvs_get_str(handle, keys[type], NULL, len);
+}
+
+esp_err_t nconfig_read(enum nconfig_type type, char* data, size_t len)
+{
+    return nvs_get_str(handle, keys[type], data, &len);
+}
+
+esp_err_t nconfig_read_bool(enum nconfig_type type, char* data, size_t len)
+{
+    return nvs_get_str(handle, keys[type], data, &len);
+}