diff --git a/zephyr/include/bacnet_basic/bacnet_basic.h b/zephyr/include/bacnet_basic/bacnet_basic.h
index 7f332161..032addd6 100644
--- a/zephyr/include/bacnet_basic/bacnet_basic.h
+++ b/zephyr/include/bacnet_basic/bacnet_basic.h
@@ -10,12 +10,20 @@
 
 #include <stdint.h>
 
+typedef void (*bacnet_basic_callback)(void *context);
+
 #ifdef __cplusplus
 extern "C" {
 #endif /* __cplusplus */
 
 void bacnet_basic_init(void);
+void bacnet_basic_init_callback_set(bacnet_basic_callback callback, 
+    void *context);
+
 void bacnet_basic_task(void);
+void bacnet_basic_task_callback_set(bacnet_basic_callback callback, 
+    void *context);
+
 unsigned long bacnet_basic_uptime_seconds(void);
 unsigned long bacnet_basic_packet_count(void);
 
diff --git a/zephyr/samples/profiles/b-ss/src/main.c b/zephyr/samples/profiles/b-ss/src/main.c
index 8ed5e8ec..ea74ebf9 100644
--- a/zephyr/samples/profiles/b-ss/src/main.c
+++ b/zephyr/samples/profiles/b-ss/src/main.c
@@ -24,20 +24,40 @@
 #include <zephyr/logging/log.h>
 LOG_MODULE_DECLARE(bacnet, CONFIG_BACNETSTACK_LOG_LEVEL);
 
-int main(void)
+/**
+ * @brief BACnet Project Initialization Handler
+ * @param context [in] The context to pass to the callback function
+ * @note This is called from the BACnet task
+ */
+static void BACnet_Smart_Sensor_Init_Handler(void *context)
 {
-	LOG_INF("\n*** BACnet Profile B-SS Sample ***\n");
-	LOG_INF("BACnet Stack Version " BACNET_VERSION_TEXT);
-
+    (void)context;
+    LOG_INF("BACnet Stack Initialized");
     /* initialize objects for this basic sample */
     Device_Init(NULL);
     Device_Set_Object_Instance_Number(260123);
     Analog_Input_Create(1);
     Analog_Input_Name_Set(1, "Sensor");
-
 	LOG_INF("BACnet Device ID: %u", Device_Object_Instance_Number());
-	LOG_INF("BACnet Device Max APDU: %d", MAX_APDU);
+}
 
+/**
+ * @brief BACnet Project Task Handler
+ * @param context [in] The context to pass to the callback function
+ * @note This is called from the BACnet task
+ */
+static void BACnet_Smart_Sensor_Task_Handler(void *context)
+{
+
+}
+
+int main(void)
+{
+	LOG_INF("\n*** BACnet Profile B-SS Sample ***\n");
+	LOG_INF("BACnet Stack Version " BACNET_VERSION_TEXT);
+	LOG_INF("BACnet Stack Max APDU: %d", MAX_APDU);
+    bacnet_basic_init_callback_set(BACnet_Smart_Sensor_Init_Handler, NULL);
+    bacnet_basic_task_callback_set(BACnet_Smart_Sensor_Task_Handler, NULL);
     /* work happens in server module */
 
     return 0;
diff --git a/zephyr/subsys/bacnet_basic/bacnet_basic.c b/zephyr/subsys/bacnet_basic/bacnet_basic.c
index b28f72a4..93ea299a 100644
--- a/zephyr/subsys/bacnet_basic/bacnet_basic.c
+++ b/zephyr/subsys/bacnet_basic/bacnet_basic.c
@@ -38,6 +38,55 @@ static unsigned long BACnet_Uptime_Seconds;
 static unsigned long BACnet_Packet_Count;
 /* local Device ID to track changes */
 static uint32_t Device_ID = 0xFFFFFFFF;
+/* callbacks for custom features in BACnet thread */
+static bacnet_basic_callback BACnet_Init_Callback;
+static void *BACnet_Init_Context;
+static bacnet_basic_callback BACnet_Task_Callback;
+static void *BACnet_Task_Context;
+
+/**
+ * @brief Set the callback for the BACnet initialization
+ * @param callback [in] The callback function called after initialization
+ * @param context [in] The context to pass to the callback function
+ */
+void bacnet_basic_init_callback_set(bacnet_basic_callback callback, 
+    void *context)
+{
+    BACnet_Init_Callback = callback;
+    BACnet_Init_Context = context;
+}
+
+/**
+ * @brief BACnet Task Callback Handler
+ */
+static void bacnet_init_callback_handler(void)
+{
+    if (BACnet_Init_Callback) {
+        BACnet_Init_Callback(BACnet_Init_Context);
+    }
+}
+
+/**
+ * @brief Set the callback for the BACnet Task
+ * @param callback [in] The callback function to call during the task
+ * @param context [in] The context to pass to the callback function
+ */
+void bacnet_basic_task_callback_set(bacnet_basic_callback callback, 
+    void *context)
+{
+    BACnet_Task_Callback = callback;
+    BACnet_Task_Context = context;
+}
+
+/**
+ * @brief BACnet Task Callback Handler
+ */
+static void bacnet_task_callback_handler(void)
+{
+    if (BACnet_Task_Callback) {
+        BACnet_Task_Callback(BACnet_Task_Context);
+    }
+}
 
 /**
  * @brief Get the BACnet device uptime in seconds
@@ -88,6 +137,8 @@ void bacnet_basic_init(void)
     mstimer_set(&BACnet_Task_Timer, 1000L);
     /* start the timer for more time sensitive object specific cyclic tasks */
     mstimer_set(&BACnet_Object_Timer, 100UL);
+    /* initialize user data in this thread */
+    bacnet_init_callback_handler();
 }
 
 /* local buffer for incoming PDUs to process */
@@ -139,4 +190,6 @@ void bacnet_basic_task(void)
         npdu_handler(&src, &PDUBuffer[0], pdu_len);
         BACnet_Packet_Count++;
     }
+    /* call user task in this thread */
+    bacnet_task_callback_handler();
 }