Let ESP IDF manage app version

esp32_device/main/secure_api.c

@@ -14,6 +14,7 @@
 #include "relays.h"
 
 #include "esp_log.h"
+#include "esp_app_desc.h"
 
 static const char *TAG = "secure_api";
 
@@ -118,11 +119,13 @@ fail:
  */
 static cJSON *genDevInfo()
 {
+    const esp_app_desc_t *desc = esp_app_get_description();
+
     cJSON *json = cJSON_CreateObject();
     if (!json)
         return NULL;
     cJSON_AddStringToObject(json, "reference", DEV_REFERENCE);
-    cJSON_AddStringToObject(json, "version", DEV_VERSION);
+    cJSON_AddStringToObject(json, "version", desc->version);
     cJSON_AddNumberToObject(json, "max_relays", relays_count());
     return json;
 }