Implement native ESP-IDF radar firmware

main/app_settings.c

@@ -0,0 +1,81 @@
+#include "app_settings.h"
+
+#include "esp_log.h"
+#include "nvs.h"
+#include "nvs_flash.h"
+
+#define SETTINGS_NAMESPACE          "radick"
+#define SETTINGS_KEY_BRIGHTNESS     "brightness"
+#define SETTINGS_KEY_SOUND          "sound"
+#define DEFAULT_BRIGHTNESS_PERCENT  78U
+#define DEFAULT_SOUND_ENABLED       true
+
+static const char *TAG = "settings";
+static nvs_handle_t s_nvs;
+static bool s_ready;
+
+static esp_err_t init_nvs_partition(void)
+{
+    esp_err_t err = nvs_flash_init();
+    if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND) {
+        err = nvs_flash_erase();
+        if (err != ESP_OK) {
+            return err;
+        }
+        err = nvs_flash_init();
+    }
+    return err;
+}
+
+esp_err_t app_settings_init(app_settings_t *settings)
+{
+    if (settings == NULL) {
+        return ESP_ERR_INVALID_ARG;
+    }
+
+    settings->brightness_percent = DEFAULT_BRIGHTNESS_PERCENT;
+    settings->sound_enabled = DEFAULT_SOUND_ENABLED;
+
+    esp_err_t err = init_nvs_partition();
+    if (err != ESP_OK) {
+        ESP_LOGW(TAG, "NVS unavailable: %s", esp_err_to_name(err));
+        return err;
+    }
+
+    err = nvs_open(SETTINGS_NAMESPACE, NVS_READWRITE, &s_nvs);
+    if (err != ESP_OK) {
+        return err;
+    }
+    s_ready = true;
+
+    uint8_t value = 0;
+    if (nvs_get_u8(s_nvs, SETTINGS_KEY_BRIGHTNESS, &value) == ESP_OK &&
+        value >= 10U && value <= 100U) {
+        settings->brightness_percent = value;
+    }
+    if (nvs_get_u8(s_nvs, SETTINGS_KEY_SOUND, &value) == ESP_OK) {
+        settings->sound_enabled = value != 0U;
+    }
+    return ESP_OK;
+}
+
+esp_err_t app_settings_set_brightness(uint8_t percent)
+{
+    if (percent < 10U || percent > 100U) {
+        return ESP_ERR_INVALID_ARG;
+    }
+    if (!s_ready) {
+        return ESP_ERR_INVALID_STATE;
+    }
+    esp_err_t err = nvs_set_u8(s_nvs, SETTINGS_KEY_BRIGHTNESS, percent);
+    return err == ESP_OK ? nvs_commit(s_nvs) : err;
+}
+
+esp_err_t app_settings_set_sound(bool enabled)
+{
+    if (!s_ready) {
+        return ESP_ERR_INVALID_STATE;
+    }
+    esp_err_t err = nvs_set_u8(s_nvs, SETTINGS_KEY_SOUND, enabled ? 1U : 0U);
+    return err == ESP_OK ? nvs_commit(s_nvs) : err;
+}