ota: Make "OTA using Topics" as default and provide a simplified API for that

- OTA using topics is now enabled in all examples
- esp_rmaker_ota_enable_default() is the simplified API that enables
  OTA using Topics with the default server certificates

components/esp_rainmaker/include/esp_rmaker_core.h

@@ -917,6 +917,20 @@ esp_err_t esp_rmaker_system_service_enable(esp_rmaker_system_serv_config_t *conf
  */
 bool esp_rmaker_local_ctrl_service_started(void);
 
+/**
+ * Enable Default RainMaker OTA Firmware Upgrade
+ *
+ * This enables the default recommended RainMaker OTA Firmware Upgrade, which is
+ * "Using the Topics", which allows performing OTA from Dashboard.
+ * This OTA can be triggered by Admin Users only.
+ * On Public RainMaker deployment, for nodes using "Self Claiming", since there
+ * is no associated admin user, the Primary user will automatically become the admin
+ * and can perform OTA from dashboard.
+ *
+ * @return ESP_OK on success
+ * @return error on failure
+ */
+esp_err_t esp_rmaker_ota_enable_default(void);
 #ifdef __cplusplus
 }
 #endif

components/esp_rainmaker/src/core/esp_rmaker_node_config.c

@@ -38,7 +38,7 @@ static esp_err_t esp_rmaker_report_info(json_gen_str_t *jptr)
     }
     json_gen_obj_set_string(jptr, "model",  info->model);
     const esp_app_desc_t *app_desc = esp_ota_get_app_description();
-    json_gen_obj_set_string(jptr, "project_name", app_desc->project_name);
+    json_gen_obj_set_string(jptr, "project_name", (char *)app_desc->project_name);
     json_gen_obj_set_string(jptr, "platform", CONFIG_IDF_TARGET);
     json_gen_pop_object(jptr);
     return ESP_OK;

components/esp_rainmaker/src/ota/esp_rmaker_ota.c

@@ -284,10 +284,16 @@ ota_end:
     return ESP_FAIL;
 }
 
+static const esp_rmaker_ota_config_t ota_default_config = {
+    .server_cert = esp_rmaker_ota_def_cert,
+};
 /* Enable the ESP RainMaker specific OTA */
 esp_err_t esp_rmaker_ota_enable(esp_rmaker_ota_config_t *ota_config, esp_rmaker_ota_type_t type)
 {
-    if (!ota_config || ((type != OTA_USING_PARAMS) && (type != OTA_USING_TOPICS))) {
+    if (ota_config == NULL) {
+        ota_config = (esp_rmaker_ota_config_t *)&ota_default_config;
+    }
+    if ((type != OTA_USING_PARAMS) && (type != OTA_USING_TOPICS)) {
         ESP_LOGE(TAG,"Invalid arguments for esp_rmaker_ota_enable()");
         return ESP_ERR_INVALID_ARG;
     }
@@ -343,3 +349,8 @@ esp_err_t esp_rmaker_ota_enable(esp_rmaker_ota_config_t *ota_config, esp_rmaker_
     }
     return err;
 }
+
+esp_err_t esp_rmaker_ota_enable_default(void)
+{
+    return esp_rmaker_ota_enable(NULL, OTA_USING_TOPICS);
+}

examples/fan/main/app_main.c

@@ -91,6 +91,9 @@ void app_main()
     esp_rmaker_device_add_param(fan_device, esp_rmaker_speed_param_create(ESP_RMAKER_DEF_SPEED_NAME, DEFAULT_SPEED));
     esp_rmaker_node_add_device(node, fan_device);
 
+    /* Enable OTA */
+    esp_rmaker_ota_enable_default();
+
     /* Enable timezone service which will be require for setting appropriate timezone
      * from the phone apps for scheduling to work correctly.
      * For more information on the various ways of setting timezone, please check

examples/gpio/main/app_main.c

@@ -86,6 +86,9 @@ void app_main()
 
     esp_rmaker_node_add_device(node, gpio_device);
 
+    /* Enable OTA */
+    esp_rmaker_ota_enable_default();
+
     /* Enable Insights. Requires CONFIG_ESP_INSIGHTS_ENABLED=y */
     app_insights_enable();
 

examples/homekit_switch/main/app_main.c

@@ -182,10 +182,7 @@ void app_main()
     esp_rmaker_node_add_device(node, switch_device);
 
     /* Enable OTA */
-    esp_rmaker_ota_config_t ota_config = {
-        .server_cert = ESP_RMAKER_OTA_DEFAULT_SERVER_CERT,
-    };
-    esp_rmaker_ota_enable(&ota_config, OTA_USING_PARAMS);
+    esp_rmaker_ota_enable_default();
 
     /* Enable Insights. Requires CONFIG_ESP_INSIGHTS_ENABLED=y */
     app_insights_enable();

examples/led_light/main/app_main.c

@@ -16,7 +16,6 @@
 #include <esp_rmaker_core.h>
 #include <esp_rmaker_standard_params.h>
 #include <esp_rmaker_standard_devices.h>
-#include <esp_rmaker_ota.h>
 #include <esp_rmaker_schedule.h>
 #include <esp_rmaker_scenes.h>
 
@@ -105,10 +104,7 @@ void app_main()
     esp_rmaker_node_add_device(node, light_device);
 
     /* Enable OTA */
-    esp_rmaker_ota_config_t ota_config = {
-        .server_cert = ESP_RMAKER_OTA_DEFAULT_SERVER_CERT,
-    };
-    esp_rmaker_ota_enable(&ota_config, OTA_USING_PARAMS);
+    esp_rmaker_ota_enable_default();
 
     /* Enable timezone service which will be require for setting appropriate timezone
      * from the phone apps for scheduling to work correctly.

examples/multi_device/main/app_main.c

@@ -120,6 +120,9 @@ void app_main()
     temp_sensor_device = esp_rmaker_temp_sensor_device_create("Temperature Sensor", NULL, app_get_current_temperature());
     esp_rmaker_node_add_device(node, temp_sensor_device);
 
+    /* Enable OTA */
+    esp_rmaker_ota_enable_default();
+
     /* Enable timezone service which will be require for setting appropriate timezone
      * from the phone apps for scheduling to work correctly.
      * For more information on the various ways of setting timezone, please check

examples/switch/main/app_main.c

@@ -18,7 +18,6 @@
 #include <esp_rmaker_standard_types.h>
 #include <esp_rmaker_standard_params.h>
 #include <esp_rmaker_standard_devices.h>
-#include <esp_rmaker_ota.h>
 #include <esp_rmaker_schedule.h>
 #include <esp_rmaker_scenes.h>
 #include <esp_rmaker_console.h>
@@ -184,10 +183,7 @@ void app_main()
     esp_rmaker_node_add_device(node, switch_device);
 
     /* Enable OTA */
-    esp_rmaker_ota_config_t ota_config = {
-        .server_cert = ESP_RMAKER_OTA_DEFAULT_SERVER_CERT,
-    };
-    esp_rmaker_ota_enable(&ota_config, OTA_USING_PARAMS);
+    esp_rmaker_ota_enable_default();
 
     /* Enable timezone service which will be require for setting appropriate timezone
      * from the phone apps for scheduling to work correctly.

examples/temperature_sensor/main/app_main.c

@@ -62,6 +62,9 @@ void app_main()
     temp_sensor_device = esp_rmaker_temp_sensor_device_create("Temperature Sensor", NULL, app_get_current_temperature());
     esp_rmaker_node_add_device(node, temp_sensor_device);
 
+    /* Enable OTA */
+    esp_rmaker_ota_enable_default();
+
     /* Enable Insights. Requires CONFIG_ESP_INSIGHTS_ENABLED=y */
     app_insights_enable();