How to add multiple elements in a server node?

[Prasad]

I am experimenting with the mesh light-switch example. I want to control two LEDs on a single node using the SimpleOnOff model. I know I should add a separate element and add the second SimpleOnOff model in it, but how do I do it? Is there any sample code which you can point me to?

[Prasad]

I did this in the server application application. When I press button 2 on the server board, LED 2 gets lit up, but now how do I control it from button 2 of my client board?

diff --git a/Tools/nrf5_SDK_for_Mesh_v2.0.1_src/examples/light_switch/server/include/nrf_mesh_config_app.h b/Tools/nrf5_SDK_for_Mesh_v2.0.1_src/examples/light_switch/server/include/nrf_mesh_config_app.h
index 9d70cc1..312ba5f 100644
--- a/Tools/nrf5_SDK_for_Mesh_v2.0.1_src/examples/light_switch/server/include/nrf_mesh_config_app.h
+++ b/Tools/nrf5_SDK_for_Mesh_v2.0.1_src/examples/light_switch/server/include/nrf_mesh_config_app.h
@@ -82,7 +82,7 @@
  * @note This value has to be greater than two to fit the configuration and health models,
  * plus the number of models needed by the application.
  */
-#define ACCESS_MODEL_COUNT (3)
+#define ACCESS_MODEL_COUNT (4)
 
 /**
  * The number of elements in the application.
@@ -90,7 +90,7 @@
  * @warning If the application is to support multiple _instances_ of the _same_ model, they cannot
  * belong in the same element and a separate element is needed for the new instance.
  */
-#define ACCESS_ELEMENT_COUNT (1)
+#define ACCESS_ELEMENT_COUNT (2)
 
 /**
  * The number of allocated subscription lists for the application.
diff --git a/Tools/nrf5_SDK_for_Mesh_v2.0.1_src/examples/light_switch/server/src/main.c 
b/Tools/nrf5_SDK_for_Mesh_v2.0.1_src/examples/light_switch/server/src/main.c
index 1048083..dabafd7 100644
--- a/Tools/nrf5_SDK_for_Mesh_v2.0.1_src/examples/light_switch/server/src/main.c
+++ b/Tools/nrf5_SDK_for_Mesh_v2.0.1_src/examples/light_switch/server/src/main.c
@@ -57,12 +57,17 @@
 #define RTT_INPUT_POLL_PERIOD_MS (100)
 #define LED_PIN_NUMBER           (BSP_LED_0)
 #define LED_PIN_MASK             (1u << LED_PIN_NUMBER)
+#define LED_PIN_NUMBER_1           (BSP_LED_1)
+#define LED_PIN_MASK_1             (1u << LED_PIN_NUMBER_1)
+
 #define LED_BLINK_INTERVAL_MS    (200)
 #define LED_BLINK_CNT_START      (2)
 #define LED_BLINK_CNT_RESET      (3)
 #define LED_BLINK_CNT_PROV       (4)
 
 static simple_on_off_server_t m_server;
+static simple_on_off_server_t m_server1;
+
 static bool                   m_device_provisioned;
 
 static void provisioning_complete_cb(void)
@@ -89,6 +94,21 @@ static bool on_off_server_set_cb(const simple_on_off_server_t * p_server, bool v
     return value;
 }
 
+
+static bool on_off_server_get_cb_1(const simple_on_off_server_t * p_server)
+{
+    return hal_led_pin_get(LED_PIN_NUMBER);
+}
+
+static bool on_off_server_set_cb_1(const simple_on_off_server_t * p_server, bool value)
+{
+    __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "Got SET command to %u\n", value);
+    hal_led_pin_set(LED_PIN_NUMBER, value);
+    return value;
+}
+
+
+
 static void node_reset(void)
 {
     __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "----- Node reset  -----\n");
@@ -122,6 +142,16 @@ static void button_event_handler(uint32_t button_number)
             break;
         }
 
+        case 1:
+        {
+            uint8_t value = !hal_led_pin_get(LED_PIN_NUMBER_1);
+            __LOG(LOG_SRC_APP, LOG_LEVEL_INFO, "User action \n");
+            hal_led_pin_set(LED_PIN_NUMBER_1, value);
+            (void)simple_on_off_server_status_publish(&m_server1, value);
+            break;
+        }
+
+
         /* Initiate node reset */
         case 3:
         {
@@ -151,7 +181,10 @@ static void models_init_cb(void)
     m_server.get_cb = on_off_server_get_cb;
     m_server.set_cb = on_off_server_set_cb;
     ERROR_CHECK(simple_on_off_server_init(&m_server, 0));
-    ERROR_CHECK(access_model_subscription_list_alloc(m_server.model_handle));
+
+    m_server1.get_cb = on_off_server_get_cb_1;
+    m_server1.set_cb = on_off_server_set_cb_1;
+    ERROR_CHECK(simple_on_off_server_init(&m_server1, 1));
 }
 
 static void mesh_init(void)

[Mttrinh]

Hi,

Yes, you have to make some changes in the provisioner application. Seems like the code in the server application is correct, I suggest you to have a look at this post.