diff --git a/kernel/atom.h b/kernel/atom.h
index 43c3734..d71acc6 100755
--- a/kernel/atom.h
+++ b/kernel/atom.h
@@ -62,7 +62,7 @@ typedef struct atom_tcb
 
     /* Details used if thread stack-checking is required */
 #ifdef ATOM_STACK_CHECKING
-    POINTER stack_top;            /* Pointer to top of stack allocation */
+    POINTER stack_bottom;         /* Pointer to bottom of stack allocation */
     uint32_t stack_size;          /* Size of stack allocation in bytes */
 #endif
 
@@ -98,7 +98,7 @@ extern uint8_t atomOSStarted;
 
 
 /* Function prototypes */
-extern uint8_t atomOSInit (void *idle_thread_stack_top, uint32_t stack_size);
+extern uint8_t atomOSInit (void *idle_thread_stack_bottom, uint32_t idle_thread_stack_size, uint8_t idle_thread_stack_check);
 extern void atomOSStart (void);
 
 extern void atomSched (uint8_t timer_tick);
@@ -113,7 +113,7 @@ extern ATOM_TCB *tcbDequeuePriority (ATOM_TCB **tcb_queue_ptr, uint8_t priority)
 
 extern ATOM_TCB *atomCurrentContext (void);
 
-extern uint8_t atomThreadCreate (ATOM_TCB *tcb_ptr, uint8_t priority, void (*entry_point)(uint32_t), uint32_t entry_param, void *stack_top, uint32_t stack_size);
+extern uint8_t atomThreadCreate (ATOM_TCB *tcb_ptr, uint8_t priority, void (*entry_point)(uint32_t), uint32_t entry_param, void *stack_bottom, uint32_t stack_size, uint8_t stack_check);
 extern uint8_t atomThreadStackCheck (ATOM_TCB *tcb_ptr, uint32_t *used_bytes, uint32_t *free_bytes);
 
 extern void archContextSwitch (ATOM_TCB *old_tcb_ptr, ATOM_TCB *new_tcb_ptr);
diff --git a/kernel/atomkernel.c b/kernel/atomkernel.c
index 8f4af3e..7521c70 100755
--- a/kernel/atomkernel.c
+++ b/kernel/atomkernel.c
@@ -369,25 +369,31 @@ static void atomThreadSwitch(ATOM_TCB *old_tcb, ATOM_TCB *new_tcb)
  * new thread may be scheduled in before the function returns.
  *
  * Optionally prefills the thread stack with a known value to enable stack
- * usage checking (if the ATOM_STACK_CHECKING macro is defined).
+ * usage checking (if the ATOM_STACK_CHECKING macro is defined and
+ * stack_check parameter is set to TRUE).
  *
  * @param[in] tcb_ptr Pointer to the thread's TCB storage
  * @param[in] priority Priority of the thread (0 to 255)
  * @param[in] entry_point Thread entry point
  * @param[in] entry_param Parameter passed to thread entry point
- * @param[in] stack_top Top of the stack area
+ * @param[in] stack_bottom Bottom of the stack area
  * @param[in] stack_size Size of the stack area in bytes
+ * @param[in] stack_check TRUE to enable stack checking for this thread
  *
  * @retval ATOM_OK Success
  * @retval ATOM_ERR_PARAM Bad parameters
  * @retval ATOM_ERR_QUEUE Error putting the thread on the ready queue
  */
-uint8_t atomThreadCreate (ATOM_TCB *tcb_ptr, uint8_t priority, void (*entry_point)(uint32_t), uint32_t entry_param, void *stack_top, uint32_t stack_size)
+uint8_t atomThreadCreate (ATOM_TCB *tcb_ptr, uint8_t priority, void (*entry_point)(uint32_t), uint32_t entry_param, void *stack_bottom, uint32_t stack_size, uint8_t stack_check)
 {
     CRITICAL_STORE;
     uint8_t status;
+    uint8_t *stack_top;
+#ifdef ATOM_STACK_CHECKING
+	int32_t count;
+#endif
 
-    if ((tcb_ptr == NULL) || (entry_point == NULL) || (stack_top == NULL)
+    if ((tcb_ptr == NULL) || (entry_point == NULL) || (stack_bottom == NULL)
         || (stack_size == 0))
     {
         /* Bad parameters */
@@ -411,6 +417,13 @@ uint8_t atomThreadCreate (ATOM_TCB *tcb_ptr, uint8_t priority, void (*entry_poin
         tcb_ptr->entry_point = entry_point;
         tcb_ptr->entry_param = entry_param;
 
+        /**
+         * Calculate a pointer to the topmost stack entry, suitably aligned
+         * for the architecture. This may discard the top few bytes if the
+         * stack size is not a multiple of the stack entry/alignment size.
+         */
+        stack_top = (uint8_t *)stack_bottom + (stack_size & ~(STACK_ALIGN_SIZE - 1)) - STACK_ALIGN_SIZE;
+
         /**
          * Additional processing only required if stack-checking is
          * enabled. Incurs a slight overhead on each thread creation
@@ -418,25 +431,29 @@ uint8_t atomThreadCreate (ATOM_TCB *tcb_ptr, uint8_t priority, void (*entry_poin
          * compiled out if not desired.
          */
 #ifdef ATOM_STACK_CHECKING
-
-        /* Store the stack details for use by the stack-check function */
-        tcb_ptr->stack_top = stack_top;
-        tcb_ptr->stack_size = stack_size;
-
-        /**
-         * Prefill the stack with a known value. This is used later in
-         * calls to atomThreadStackCheck() to get an indication of how
-         * much stack has been used during runtime.
-         */
-        while (stack_size > 0)
+        /* Set up stack-checking if enabled for this thread */
+        if (stack_check)
         {
-            /* Initialise all stack bytes from bottom up to 0x5A */
-            *((uint8_t *)stack_top - (stack_size - 1)) = STACK_CHECK_BYTE;
-            stack_size--;
+            /* Store the stack details for use by the stack-check function */
+            tcb_ptr->stack_bottom = stack_bottom;
+            tcb_ptr->stack_size = stack_size;
+
+            /**
+             * Prefill the stack with a known value. This is used later in
+             * calls to atomThreadStackCheck() to get an indication of how
+             * much stack has been used during runtime.
+             */
+		    count = (int32_t)stack_size;
+            while (count > 0)
+            {
+                /* Initialise all stack bytes from top down to 0x5A */
+                *((uint8_t *)stack_bottom + (count - 1)) = STACK_CHECK_BYTE;
+                count--;
+            }
         }
 #else
-        /* Avoid compiler warnings due to unused stack_size variable */
-        stack_size = stack_size;
+        /* Avoid compiler warning due to unused parameter */
+        stack_check = stack_check;
 #endif
 
         /**
@@ -528,10 +545,10 @@ uint8_t atomThreadStackCheck (ATOM_TCB *tcb_ptr, uint32_t *used_bytes, uint32_t
     else
     {
         /**
-         * Starting at the far end, count the unmodified areas until a
+         * Starting at the bottom end, count the unmodified areas until a
          * modified byte is found.
          */
-        stack_ptr = (uint8_t *)tcb_ptr->stack_top - (tcb_ptr->stack_size - 1);
+        stack_ptr = (uint8_t *)tcb_ptr->stack_bottom;
         for (i = 0; i < tcb_ptr->stack_size; i++)
         {
             /* Loop until a modified byte is found */
@@ -647,13 +664,14 @@ ATOM_TCB *atomCurrentContext (void)
  * operating system facilities are being initialised. They are normally
  * enabled by the archFirstThreadRestore() routine in the architecture port.
  *
- * @param[in] idle_thread_stack_top Ptr to top of stack area for idle thread
+ * @param[in] idle_thread_stack_bottom Ptr to bottom of stack for idle thread
  * @param[in] idle_thread_stack_size Size of idle thread stack in bytes
+ * @param[in] idle_thread_stack_check TRUE if stack checking required on idle thread
  *
  * @retval ATOM_OK Success
  * @retval ATOM_ERROR Initialisation error
  */
-uint8_t atomOSInit (void *idle_thread_stack_top, uint32_t idle_thread_stack_size)
+uint8_t atomOSInit (void *idle_thread_stack_bottom, uint32_t idle_thread_stack_size, uint8_t idle_thread_stack_check)
 {
     uint8_t status;
 
@@ -667,8 +685,9 @@ uint8_t atomOSInit (void *idle_thread_stack_top, uint32_t idle_thread_stack_size
                  IDLE_THREAD_PRIORITY,
                  atomIdleThread,
                  0,
-                 idle_thread_stack_top,
-                 idle_thread_stack_size);
+                 idle_thread_stack_bottom,
+                 idle_thread_stack_size,
+				 idle_thread_stack_check);
 
     /* Return status */
     return (status);
diff --git a/kernel/atomport-template.h b/kernel/atomport-template.h
index 4f47cb4..68772e7 100755
--- a/kernel/atomport-template.h
+++ b/kernel/atomport-template.h
@@ -41,6 +41,9 @@
  */
 #define NULL      ((void *)(0))
 
+/* Size of each stack entry / stack alignment size (e.g. 8 bits) */
+#define STACK_ALIGN_SIZE                sizeof(unsigned char)
+
 /**
  * Architecture-specific types.
  * Uses the stdint.h naming convention, so if stdint.h is available on the
diff --git a/ports/avr/atomport.h b/ports/avr/atomport.h
index 094e17e..ba4dead 100644
--- a/ports/avr/atomport.h
+++ b/ports/avr/atomport.h
@@ -43,6 +43,8 @@
 /* Required number of system ticks per second (normally 100 for 10ms tick) */
 #define SYSTEM_TICKS_PER_SEC            100
 
+/* Size of each stack entry / stack alignment size (8 bits on AVR) */
+#define STACK_ALIGN_SIZE                sizeof(uint8_t)
 
 /**
  * Architecture-specific types.
diff --git a/ports/avr/tests-main.c b/ports/avr/tests-main.c
index 427cd93..9cb5596 100644
--- a/ports/avr/tests-main.c
+++ b/ports/avr/tests-main.c
@@ -71,7 +71,7 @@
  * stack for application code local variables etc.
  *
  * With all OS tests implemented to date on the AVR, the Main thread
- * stack has not exceeded 198 bytes. To allow all tests to run we set
+ * stack has not exceeded 201 bytes. To allow all tests to run we set
  * a minimum main thread stack size of 204 bytes. This may increase in
  * future as the codebase changes but for the time being is enough to
  * cope with all of the automated tests.
@@ -167,17 +167,15 @@ int main ( void )
     /**
      * Initialise the OS before creating our threads.
      *
-     * Note that we tell the OS that the idle stack is half its actual
-     * size. This prevents it prefilling the bottom half with known
-     * values for stack-checkig purposes, which we cannot allow because
-     * we are temporarily using it for our own stack. The remainder will
-     * still be available once the OS is started, this only prevents the
-     * OS from prefilling it.
+     * Note that we cannot enable stack-checking on the idle thread on
+     * this platform because we are already using part of the idle
+     * thread's stack now as our startup stack. Prefilling for stack
+     * checking would overwrite our current stack.
      *
      * If you are not reusing the idle thread's stack during startup then
-     * you should pass in the correct size here.
+     * you are free to enable stack-checking here.
      */
-    status = atomOSInit(&idle_thread_stack[IDLE_STACK_SIZE_BYTES - 1], (IDLE_STACK_SIZE_BYTES/2));
+    status = atomOSInit(&idle_thread_stack[0], IDLE_STACK_SIZE_BYTES, FALSE);
     if (status == ATOM_OK)
     {
         /* Enable the system tick timer */
@@ -186,8 +184,9 @@ int main ( void )
         /* Create an application thread */
         status = atomThreadCreate(&main_tcb,
                      TEST_THREAD_PRIO, main_thread_func, 0,
-                     &main_thread_stack[MAIN_STACK_SIZE_BYTES - 1],
-                     MAIN_STACK_SIZE_BYTES);
+                     &main_thread_stack[0],
+                     MAIN_STACK_SIZE_BYTES,
+					 TRUE);
         if (status == ATOM_OK)
         {
             /**
diff --git a/ports/stm8/atomport.h b/ports/stm8/atomport.h
index bcd36e1..caf87de 100644
--- a/ports/stm8/atomport.h
+++ b/ports/stm8/atomport.h
@@ -45,6 +45,8 @@
 /* Required number of system ticks per second (normally 100 for 10ms tick) */
 #define SYSTEM_TICKS_PER_SEC            100
 
+/* Size of each stack entry / stack alignment size (8 bits on STM8) */
+#define STACK_ALIGN_SIZE                sizeof(u8)
 
 /**
  * Architecture-specific types.
diff --git a/ports/stm8/tests-main.c b/ports/stm8/tests-main.c
index 460c4bc..21b6d4d 100644
--- a/ports/stm8/tests-main.c
+++ b/ports/stm8/tests-main.c
@@ -139,7 +139,7 @@ NO_REG_SAVE void main ( void )
      */
 
     /* Initialise the OS before creating our threads */
-    status = atomOSInit(&idle_thread_stack[IDLE_STACK_SIZE_BYTES - 1], IDLE_STACK_SIZE_BYTES);
+    status = atomOSInit(&idle_thread_stack[0], IDLE_STACK_SIZE_BYTES, TRUE);
     if (status == ATOM_OK)
     {
         /* Enable the system tick timer */
@@ -148,8 +148,9 @@ NO_REG_SAVE void main ( void )
         /* Create an application thread */
         status = atomThreadCreate(&main_tcb,
                      TEST_THREAD_PRIO, main_thread_func, 0,
-                     &main_thread_stack[MAIN_STACK_SIZE_BYTES - 1],
-                     MAIN_STACK_SIZE_BYTES);
+                     &main_thread_stack[0],
+                     MAIN_STACK_SIZE_BYTES,
+					 TRUE);
         if (status == ATOM_OK)
         {
             /**
diff --git a/tests/kern1.c b/tests/kern1.c
index 90a3991..0f09756 100644
--- a/tests/kern1.c
+++ b/tests/kern1.c
@@ -63,8 +63,8 @@ uint32_t test_start (void)
 
     /* atomThreadCreate: Pass a bad TCB pointer */
     if (atomThreadCreate (NULL, TEST_THREAD_PRIO, test_thread_func, 0,
-            &test_thread_stack[TEST_THREAD_STACK_SIZE - 1],
-            TEST_THREAD_STACK_SIZE) != ATOM_ERR_PARAM)
+            &test_thread_stack[0],
+            TEST_THREAD_STACK_SIZE, TRUE) != ATOM_ERR_PARAM)
     {
         ATOMLOG (_STR("Bad TCB check\n"));
         failures++;
@@ -72,8 +72,8 @@ uint32_t test_start (void)
 
     /* atomThreadCreate: Pass a bad entry point */
     if (atomThreadCreate (&tcb1, TEST_THREAD_PRIO, NULL, 0,
-            &test_thread_stack[TEST_THREAD_STACK_SIZE - 1],
-            TEST_THREAD_STACK_SIZE) != ATOM_ERR_PARAM)
+            &test_thread_stack[0],
+            TEST_THREAD_STACK_SIZE, TRUE) != ATOM_ERR_PARAM)
     {
         ATOMLOG (_STR("Bad entry check\n"));
         failures++;
@@ -81,7 +81,7 @@ uint32_t test_start (void)
 
     /* atomThreadCreate: Pass a bad stack pointer */
     if (atomThreadCreate (&tcb1, TEST_THREAD_PRIO, test_thread_func, 0,
-            NULL, TEST_THREAD_STACK_SIZE) != ATOM_ERR_PARAM)
+            NULL, TEST_THREAD_STACK_SIZE, TRUE) != ATOM_ERR_PARAM)
     {
         ATOMLOG (_STR("Bad stack ptr check\n"));
         failures++;
@@ -89,7 +89,7 @@ uint32_t test_start (void)
 
     /* atomThreadCreate: Pass a bad stack size */
     if (atomThreadCreate (&tcb1, TEST_THREAD_PRIO, test_thread_func, 0,
-            &test_thread_stack[TEST_THREAD_STACK_SIZE - 1], 0) != ATOM_ERR_PARAM)
+            &test_thread_stack[0], 0, TRUE) != ATOM_ERR_PARAM)
     {
         ATOMLOG (_STR("Bad stack size check\n"));
         failures++;
diff --git a/tests/kern3.c b/tests/kern3.c
index 20304f8..a149d72 100644
--- a/tests/kern3.c
+++ b/tests/kern3.c
@@ -95,8 +95,8 @@ uint32_t test_start (void)
 
     /* Create low priority thread */
     if (atomThreadCreate (&tcb[0], 253, test_thread_func, 0,
-            &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-            TEST_THREAD_STACK_SIZE) != ATOM_OK)
+            &test_thread_stack[0][0],
+            TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         ATOMLOG (_STR("Bad thread create\n"));
         failures++;
@@ -104,8 +104,8 @@ uint32_t test_start (void)
 
     /* Create high priority thread */
     else if (atomThreadCreate (&tcb[1], 252, test_thread_func, 1,
-            &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-            TEST_THREAD_STACK_SIZE) != ATOM_OK)
+            &test_thread_stack[1][0],
+            TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         ATOMLOG (_STR("Bad thread create\n"));
         failures++;
diff --git a/tests/kern4.c b/tests/kern4.c
index 909232e..23ed33b 100644
--- a/tests/kern4.c
+++ b/tests/kern4.c
@@ -97,29 +97,29 @@ uint32_t test_start (void)
      * a spell in which this thread was run.
      */
     if (atomThreadCreate (&tcb[0], TEST_THREAD_PRIO + 1, test_thread_func, 0,
-            &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-            TEST_THREAD_STACK_SIZE) != ATOM_OK)
+            &test_thread_stack[0][0],
+            TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         ATOMLOG (_STR("Bad thread create\n"));
         failures++;
     }
     else if (atomThreadCreate (&tcb[1], TEST_THREAD_PRIO + 1, test_thread_func, 1,
-            &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-            TEST_THREAD_STACK_SIZE) != ATOM_OK)
+            &test_thread_stack[1][0],
+            TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         ATOMLOG (_STR("Bad thread create\n"));
         failures++;
     }
     else if (atomThreadCreate (&tcb[2], TEST_THREAD_PRIO + 1, test_thread_func, 2,
-            &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-            TEST_THREAD_STACK_SIZE) != ATOM_OK)
+            &test_thread_stack[2][0],
+            TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         ATOMLOG (_STR("Bad thread create\n"));
         failures++;
     }
     else if (atomThreadCreate (&tcb[3], TEST_THREAD_PRIO + 1, test_thread_func, 3,
-            &test_thread_stack[3][TEST_THREAD_STACK_SIZE - 1],
-            TEST_THREAD_STACK_SIZE) != ATOM_OK)
+            &test_thread_stack[3][0],
+            TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         ATOMLOG (_STR("Bad thread create\n"));
         failures++;
diff --git a/tests/mutex1.c b/tests/mutex1.c
index 015e8e2..40f1a9d 100644
--- a/tests/mutex1.c
+++ b/tests/mutex1.c
@@ -137,8 +137,8 @@ uint32_t test_start (void)
     }
 
     else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test1_thread_func, 0,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Error creating test thread 1\n"));
@@ -200,8 +200,8 @@ uint32_t test_start (void)
     }
 
     else if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test2_thread_func, 0,
-              &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[1][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Error creating test thread 2\n"));
diff --git a/tests/mutex2.c b/tests/mutex2.c
index 5432ec3..df31d0e 100644
--- a/tests/mutex2.c
+++ b/tests/mutex2.c
@@ -143,8 +143,8 @@ uint32_t test_start (void)
     /* Create a test thread, the sole purpose of which is to own mutex2 */
     g_owned = 0;
     if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 0,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Error creating test thread 1\n"));
diff --git a/tests/mutex3.c b/tests/mutex3.c
index f604430..958a657 100644
--- a/tests/mutex3.c
+++ b/tests/mutex3.c
@@ -108,8 +108,8 @@ uint32_t test_start (void)
     {
         /* Create Thread 1 (lower priority thread A) */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO+1, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -121,8 +121,8 @@ uint32_t test_start (void)
 
         /* Create Thread 2 (lower priority thread B) */
         if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO+1, test_thread_func, 2,
-              &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[1][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -134,8 +134,8 @@ uint32_t test_start (void)
 
         /* Create Thread 3 (higher priority thread A) */
         if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 3,
-              &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[2][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -147,8 +147,8 @@ uint32_t test_start (void)
 
         /* Create Thread 4 (higher priority thread B) */
         if (atomThreadCreate(&tcb[3], TEST_THREAD_PRIO, test_thread_func, 4,
-              &test_thread_stack[3][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[3][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -288,4 +288,4 @@ static void test_thread_func (uint32_t param)
     {
         atomTimerDelay (SYSTEM_TICKS_PER_SEC);
     }
-}
\ No newline at end of file
+}
diff --git a/tests/mutex4.c b/tests/mutex4.c
index b478517..6bf1281 100644
--- a/tests/mutex4.c
+++ b/tests/mutex4.c
@@ -101,8 +101,8 @@ uint32_t test_start (void)
 
         /* Create Thread 1 */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -113,8 +113,8 @@ uint32_t test_start (void)
 
         /* Create Thread 2 */
         if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 2,
-              &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[1][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -125,8 +125,8 @@ uint32_t test_start (void)
 
         /* Create Thread 3 */
         if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 3,
-              &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[2][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -137,8 +137,8 @@ uint32_t test_start (void)
 
         /* Create Thread 4 */
         if (atomThreadCreate(&tcb[3], TEST_THREAD_PRIO, test_thread_func, 4,
-              &test_thread_stack[3][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[3][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -293,4 +293,4 @@ static void test_thread_func (uint32_t param)
     {
         atomTimerDelay (SYSTEM_TICKS_PER_SEC);
     }
-}
\ No newline at end of file
+}
diff --git a/tests/mutex5.c b/tests/mutex5.c
index 9aa18f2..dc31558 100644
--- a/tests/mutex5.c
+++ b/tests/mutex5.c
@@ -95,8 +95,8 @@ uint32_t test_start (void)
 
         /* Create second thread */
         else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -299,4 +299,4 @@ static void test_thread_func (uint32_t param)
     {
         atomTimerDelay (SYSTEM_TICKS_PER_SEC);
     }
-}
\ No newline at end of file
+}
diff --git a/tests/mutex6.c b/tests/mutex6.c
index ca2c2d6..6e2890e 100644
--- a/tests/mutex6.c
+++ b/tests/mutex6.c
@@ -100,8 +100,8 @@ uint32_t test_start (void)
 
         /* Create second thread */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -290,4 +290,4 @@ static void test_thread_func (uint32_t param)
     {
         atomTimerDelay (SYSTEM_TICKS_PER_SEC);
     }
-}
\ No newline at end of file
+}
diff --git a/tests/mutex7.c b/tests/mutex7.c
index 7d25fae..32c6452 100644
--- a/tests/mutex7.c
+++ b/tests/mutex7.c
@@ -93,8 +93,8 @@ uint32_t test_start (void)
 
         /* Create second thread */
         else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
diff --git a/tests/mutex8.c b/tests/mutex8.c
index 14febb9..4892bb0 100644
--- a/tests/mutex8.c
+++ b/tests/mutex8.c
@@ -94,8 +94,8 @@ uint32_t test_start (void)
 
         /* Create test thread 1 */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 0,
-                  &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[0][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 1\n"));
@@ -104,8 +104,8 @@ uint32_t test_start (void)
 
         /* Create test thread 2 */
         else if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 1,
-                  &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[1][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 2\n"));
@@ -114,8 +114,8 @@ uint32_t test_start (void)
 
         /* Create test thread 3 */
         else if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 2,
-                  &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[2][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 3\n"));
diff --git a/tests/mutex9.c b/tests/mutex9.c
index e509762..a690836 100644
--- a/tests/mutex9.c
+++ b/tests/mutex9.c
@@ -88,8 +88,8 @@ uint32_t test_start (void)
 
         /* Create second thread */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
diff --git a/tests/queue2.c b/tests/queue2.c
index 8528ade..3b5f9f5 100644
--- a/tests/queue2.c
+++ b/tests/queue2.c
@@ -90,8 +90,8 @@ uint32_t test_start (void)
 
     /* Create a test thread that will block because the queue is empty */
     else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test1_thread_func, 0,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Error creating test thread 1\n"));
@@ -147,8 +147,8 @@ uint32_t test_start (void)
 
     /* Create a test thread that will block because the queue is empty */
     else if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test2_thread_func, 0,
-              &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[1][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Error creating test thread 2\n"));
diff --git a/tests/queue3.c b/tests/queue3.c
index 277a4e3..8b4427e 100644
--- a/tests/queue3.c
+++ b/tests/queue3.c
@@ -107,8 +107,8 @@ uint32_t test_start (void)
 
         /* Create a test thread that will block because the queue is full */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test1_thread_func, 0,
-                  &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[0][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 1\n"));
@@ -178,8 +178,8 @@ uint32_t test_start (void)
 
         /* Create a test thread that will block because the queue is full */
         if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test2_thread_func, 0,
-                  &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[1][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 2\n"));
diff --git a/tests/queue5.c b/tests/queue5.c
index bf07960..b6b81ec 100644
--- a/tests/queue5.c
+++ b/tests/queue5.c
@@ -115,8 +115,8 @@ uint32_t test_start (void)
 
         /* Create Thread 1 (lower priority thread A) */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO+1, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -128,8 +128,8 @@ uint32_t test_start (void)
 
         /* Create Thread 2 (lower priority thread B) */
         if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO+1, test_thread_func, 2,
-              &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[1][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -141,8 +141,8 @@ uint32_t test_start (void)
 
         /* Create Thread 3 (higher priority thread A) */
         if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 3,
-              &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[2][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -154,8 +154,8 @@ uint32_t test_start (void)
 
         /* Create Thread 4 (higher priority thread B) */
         if (atomThreadCreate(&tcb[3], TEST_THREAD_PRIO, test_thread_func, 4,
-              &test_thread_stack[3][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[3][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
diff --git a/tests/queue6.c b/tests/queue6.c
index 4de62f0..1849b3b 100644
--- a/tests/queue6.c
+++ b/tests/queue6.c
@@ -107,8 +107,8 @@ uint32_t test_start (void)
 
     /* Create a test thread that will block because the queue is empty */
     else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO + 1, test1_thread_func, 0,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Error creating test thread 1\n"));
diff --git a/tests/queue7.c b/tests/queue7.c
index 5b249d8..83eefa7 100644
--- a/tests/queue7.c
+++ b/tests/queue7.c
@@ -94,8 +94,8 @@ uint32_t test_start (void)
 
         /* Create test thread 1 */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 0,
-                  &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[0][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 1\n"));
@@ -104,8 +104,8 @@ uint32_t test_start (void)
 
         /* Create test thread 2 */
         else if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 1,
-                  &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[1][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 2\n"));
@@ -114,8 +114,8 @@ uint32_t test_start (void)
 
         /* Create test thread 3 */
         else if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 2,
-                  &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[2][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 3\n"));
diff --git a/tests/queue9.c b/tests/queue9.c
index 1bc1034..10e740b 100644
--- a/tests/queue9.c
+++ b/tests/queue9.c
@@ -103,8 +103,8 @@ uint32_t test_start (void)
     {
         /* Create Thread 1 */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -115,8 +115,8 @@ uint32_t test_start (void)
 
         /* Create Thread 2 */
         if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 2,
-              &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[1][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -127,8 +127,8 @@ uint32_t test_start (void)
 
         /* Create Thread 3 */
         if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 3,
-              &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[2][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -139,8 +139,8 @@ uint32_t test_start (void)
 
         /* Create Thread 4 */
         if (atomThreadCreate(&tcb[3], TEST_THREAD_PRIO, test_thread_func, 4,
-              &test_thread_stack[3][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[3][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
diff --git a/tests/sem1.c b/tests/sem1.c
index 54b7ddc..6842cd2 100644
--- a/tests/sem1.c
+++ b/tests/sem1.c
@@ -133,8 +133,8 @@ uint32_t test_start (void)
     }
 
     else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test1_thread_func, 0,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Error creating test thread 1\n"));
@@ -200,8 +200,8 @@ uint32_t test_start (void)
         failures++;
     }
     else if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test2_thread_func, 0,
-              &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[1][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Error creating test thread 2\n"));
diff --git a/tests/sem3.c b/tests/sem3.c
index 6648b39..19ece62 100644
--- a/tests/sem3.c
+++ b/tests/sem3.c
@@ -103,8 +103,8 @@ uint32_t test_start (void)
     {
         /* Create Thread 1 (lower priority thread A) */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO+1, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -116,8 +116,8 @@ uint32_t test_start (void)
 
         /* Create Thread 2 (lower priority thread B) */
         if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO+1, test_thread_func, 2,
-              &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[1][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -129,8 +129,8 @@ uint32_t test_start (void)
 
         /* Create Thread 3 (higher priority thread A) */
         if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 3,
-              &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[2][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -142,8 +142,8 @@ uint32_t test_start (void)
 
         /* Create Thread 4 (higher priority thread B) */
         if (atomThreadCreate(&tcb[3], TEST_THREAD_PRIO, test_thread_func, 4,
-              &test_thread_stack[3][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[3][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
diff --git a/tests/sem4.c b/tests/sem4.c
index 419195c..128276f 100644
--- a/tests/sem4.c
+++ b/tests/sem4.c
@@ -97,8 +97,8 @@ uint32_t test_start (void)
     {
         /* Create Thread 1 */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -109,8 +109,8 @@ uint32_t test_start (void)
 
         /* Create Thread 2 */
         if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 2,
-              &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[1][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -121,8 +121,8 @@ uint32_t test_start (void)
 
         /* Create Thread 3 */
         if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 3,
-              &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[2][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
@@ -133,8 +133,8 @@ uint32_t test_start (void)
 
         /* Create Thread 4 */
         if (atomThreadCreate(&tcb[3], TEST_THREAD_PRIO, test_thread_func, 4,
-              &test_thread_stack[3][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[3][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
diff --git a/tests/sem5.c b/tests/sem5.c
index dc87f9f..4603071 100644
--- a/tests/sem5.c
+++ b/tests/sem5.c
@@ -84,8 +84,8 @@ uint32_t test_start (void)
     {
         /* Create second thread */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
diff --git a/tests/sem6.c b/tests/sem6.c
index 851f9b8..532ec29 100644
--- a/tests/sem6.c
+++ b/tests/sem6.c
@@ -94,8 +94,8 @@ uint32_t test_start (void)
 
         /* Create second thread */
         else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
diff --git a/tests/sem7.c b/tests/sem7.c
index 62fa16f..3835103 100644
--- a/tests/sem7.c
+++ b/tests/sem7.c
@@ -100,8 +100,8 @@ uint32_t test_start (void)
 
         /* Create second thread */
         else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread\n"));
diff --git a/tests/sem8.c b/tests/sem8.c
index 432cf32..ec27ba3 100644
--- a/tests/sem8.c
+++ b/tests/sem8.c
@@ -110,8 +110,8 @@ uint32_t test_start (void)
 
         /* Create thread 1: Higher priority than main thread so should sleep */
         else if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO - 1, test_thread_func, 1,
-              &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[0][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 1\n"));
@@ -120,8 +120,8 @@ uint32_t test_start (void)
 
         /* Create thread 2: Same priority as main thread so should not sleep */
         else if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 0,
-              &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[1][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 2\n"));
@@ -130,8 +130,8 @@ uint32_t test_start (void)
 
         /* Create thread 3: Same priority as main thread so should not sleep */
         else if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO + 1, test_thread_func, 0,
-              &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-              TEST_THREAD_STACK_SIZE) != ATOM_OK)
+              &test_thread_stack[2][0],
+              TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 3\n"));
diff --git a/tests/sem9.c b/tests/sem9.c
index d7a86d6..fe660ba 100644
--- a/tests/sem9.c
+++ b/tests/sem9.c
@@ -87,8 +87,8 @@ uint32_t test_start (void)
     {
         /* Create test thread 1 */
         if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 0,
-                  &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[0][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 1\n"));
@@ -97,8 +97,8 @@ uint32_t test_start (void)
 
         /* Create test thread 2 */
         else if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 1,
-                  &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[1][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 2\n"));
@@ -107,8 +107,8 @@ uint32_t test_start (void)
 
         /* Create test thread 3 */
         else if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 2,
-                  &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-                  TEST_THREAD_STACK_SIZE) != ATOM_OK)
+                  &test_thread_stack[2][0],
+                  TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
         {
             /* Fail */
             ATOMLOG (_STR("Error creating test thread 3\n"));
diff --git a/tests/timer2.c b/tests/timer2.c
index a606830..b9cbc55 100644
--- a/tests/timer2.c
+++ b/tests/timer2.c
@@ -73,8 +73,8 @@ uint32_t test_start (void)
 
     /* Create Thread 1 */
     if (atomThreadCreate(&tcb[0], TEST_THREAD_PRIO, test_thread_func, 1,
-          &test_thread_stack[0][TEST_THREAD_STACK_SIZE - 1],
-          TEST_THREAD_STACK_SIZE) != ATOM_OK)
+          &test_thread_stack[0][0],
+          TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Thread1\n"));
@@ -83,8 +83,8 @@ uint32_t test_start (void)
 
     /* Create Thread 2 */
     if (atomThreadCreate(&tcb[1], TEST_THREAD_PRIO, test_thread_func, 2,
-          &test_thread_stack[1][TEST_THREAD_STACK_SIZE - 1],
-          TEST_THREAD_STACK_SIZE) != ATOM_OK)
+          &test_thread_stack[1][0],
+          TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Thread2\n"));
@@ -93,8 +93,8 @@ uint32_t test_start (void)
 
     /* Create Thread 3 */
     if (atomThreadCreate(&tcb[2], TEST_THREAD_PRIO, test_thread_func, 3,
-          &test_thread_stack[2][TEST_THREAD_STACK_SIZE - 1],
-          TEST_THREAD_STACK_SIZE) != ATOM_OK)
+          &test_thread_stack[2][0],
+          TEST_THREAD_STACK_SIZE, TRUE) != ATOM_OK)
     {
         /* Fail */
         ATOMLOG (_STR("Thread3\n"));