Official ARM version: v5.4.0

    Add CMSIS V5.4.0, please refer to index.html available under \docs folder.

    Note: content of \CMSIS\Core\Include has been copied under \Include to keep the same structure
         used in existing projects, and thus avoid projects mass update
    Note: the following components have been removed from ARM original delivery (as not used in ST packages)
        - CMSIS_EW2018.pdf
        - .gitattributes
        - .gitignore
        - \Device
        - \CMSIS
           - \CoreValidation
		   - \DAP
           - \Documentation
           - \DoxyGen
           - \Driver
           - \Pack
           - \RTOS\CMSIS_RTOS_Tutorial.pdf
           - \RTOS\RTX
           - \RTOS\Template
           - \RTOS2\RTX
           - \Utilities
           - All ARM/GCC projects files are deleted from \DSP, \RTOS and \RTOS2

Change-Id: Ia026c3f0f0d016627a4fb5a9032852c33d24b4d3

7 files changed, 2594 insertions, 0 deletions

diff --git a/RTOS2/Include/cmsis_os2.h b/RTOS2/Include/cmsis_os2.h
new file mode 100644
index 0000000..e0b602c
--- /dev/null
+++ b/RTOS2/Include/cmsis_os2.h
@@ -0,0 +1,756 @@
+/*
+ * Copyright (c) 2013-2018 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ----------------------------------------------------------------------
+ *
+ * $Date:        18. June 2018
+ * $Revision:    V2.1.3
+ *
+ * Project:      CMSIS-RTOS2 API
+ * Title:        cmsis_os2.h header file
+ *
+ * Version 2.1.3
+ *    Additional functions allowed to be called from Interrupt Service Routines:
+ *    - osThreadGetId
+ * Version 2.1.2
+ *    Additional functions allowed to be called from Interrupt Service Routines:
+ *    - osKernelGetInfo, osKernelGetState
+ * Version 2.1.1
+ *    Additional functions allowed to be called from Interrupt Service Routines:
+ *    - osKernelGetTickCount, osKernelGetTickFreq
+ *    Changed Kernel Tick type to uint32_t:
+ *    - updated: osKernelGetTickCount, osDelayUntil
+ * Version 2.1.0
+ *    Support for critical and uncritical sections (nesting safe):
+ *    - updated: osKernelLock, osKernelUnlock
+ *    - added: osKernelRestoreLock
+ *    Updated Thread and Event Flags:
+ *    - changed flags parameter and return type from int32_t to uint32_t
+ * Version 2.0.0
+ *    Initial Release
+ *---------------------------------------------------------------------------*/
+ 
+#ifndef CMSIS_OS2_H_
+#define CMSIS_OS2_H_
+ 
+#ifndef __NO_RETURN
+#if   defined(__CC_ARM)
+#define __NO_RETURN __declspec(noreturn)
+#elif defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6010050)
+#define __NO_RETURN __attribute__((__noreturn__))
+#elif defined(__GNUC__)
+#define __NO_RETURN __attribute__((__noreturn__))
+#elif defined(__ICCARM__)
+#define __NO_RETURN __noreturn
+#else
+#define __NO_RETURN
+#endif
+#endif
+ 
+#include <stdint.h>
+#include <stddef.h>
+ 
+#ifdef  __cplusplus
+extern "C"
+{
+#endif
+ 
+ 
+//  ==== Enumerations, structures, defines ====
+ 
+/// Version information.
+typedef struct {
+  uint32_t                       api;   ///< API version (major.minor.rev: mmnnnrrrr dec).
+  uint32_t                    kernel;   ///< Kernel version (major.minor.rev: mmnnnrrrr dec).
+} osVersion_t;
+ 
+/// Kernel state.
+typedef enum {
+  osKernelInactive        =  0,         ///< Inactive.
+  osKernelReady           =  1,         ///< Ready.
+  osKernelRunning         =  2,         ///< Running.
+  osKernelLocked          =  3,         ///< Locked.
+  osKernelSuspended       =  4,         ///< Suspended.
+  osKernelError           = -1,         ///< Error.
+  osKernelReserved        = 0x7FFFFFFFU ///< Prevents enum down-size compiler optimization.
+} osKernelState_t;
+ 
+/// Thread state.
+typedef enum {
+  osThreadInactive        =  0,         ///< Inactive.
+  osThreadReady           =  1,         ///< Ready.
+  osThreadRunning         =  2,         ///< Running.
+  osThreadBlocked         =  3,         ///< Blocked.
+  osThreadTerminated      =  4,         ///< Terminated.
+  osThreadError           = -1,         ///< Error.
+  osThreadReserved        = 0x7FFFFFFF  ///< Prevents enum down-size compiler optimization.
+} osThreadState_t;
+ 
+/// Priority values.
+typedef enum {
+  osPriorityNone          =  0,         ///< No priority (not initialized).
+  osPriorityIdle          =  1,         ///< Reserved for Idle thread.
+  osPriorityLow           =  8,         ///< Priority: low
+  osPriorityLow1          =  8+1,       ///< Priority: low + 1
+  osPriorityLow2          =  8+2,       ///< Priority: low + 2
+  osPriorityLow3          =  8+3,       ///< Priority: low + 3
+  osPriorityLow4          =  8+4,       ///< Priority: low + 4
+  osPriorityLow5          =  8+5,       ///< Priority: low + 5
+  osPriorityLow6          =  8+6,       ///< Priority: low + 6
+  osPriorityLow7          =  8+7,       ///< Priority: low + 7
+  osPriorityBelowNormal   = 16,         ///< Priority: below normal
+  osPriorityBelowNormal1  = 16+1,       ///< Priority: below normal + 1
+  osPriorityBelowNormal2  = 16+2,       ///< Priority: below normal + 2
+  osPriorityBelowNormal3  = 16+3,       ///< Priority: below normal + 3
+  osPriorityBelowNormal4  = 16+4,       ///< Priority: below normal + 4
+  osPriorityBelowNormal5  = 16+5,       ///< Priority: below normal + 5
+  osPriorityBelowNormal6  = 16+6,       ///< Priority: below normal + 6
+  osPriorityBelowNormal7  = 16+7,       ///< Priority: below normal + 7
+  osPriorityNormal        = 24,         ///< Priority: normal
+  osPriorityNormal1       = 24+1,       ///< Priority: normal + 1
+  osPriorityNormal2       = 24+2,       ///< Priority: normal + 2
+  osPriorityNormal3       = 24+3,       ///< Priority: normal + 3
+  osPriorityNormal4       = 24+4,       ///< Priority: normal + 4
+  osPriorityNormal5       = 24+5,       ///< Priority: normal + 5
+  osPriorityNormal6       = 24+6,       ///< Priority: normal + 6
+  osPriorityNormal7       = 24+7,       ///< Priority: normal + 7
+  osPriorityAboveNormal   = 32,         ///< Priority: above normal
+  osPriorityAboveNormal1  = 32+1,       ///< Priority: above normal + 1
+  osPriorityAboveNormal2  = 32+2,       ///< Priority: above normal + 2
+  osPriorityAboveNormal3  = 32+3,       ///< Priority: above normal + 3
+  osPriorityAboveNormal4  = 32+4,       ///< Priority: above normal + 4
+  osPriorityAboveNormal5  = 32+5,       ///< Priority: above normal + 5
+  osPriorityAboveNormal6  = 32+6,       ///< Priority: above normal + 6
+  osPriorityAboveNormal7  = 32+7,       ///< Priority: above normal + 7
+  osPriorityHigh          = 40,         ///< Priority: high
+  osPriorityHigh1         = 40+1,       ///< Priority: high + 1
+  osPriorityHigh2         = 40+2,       ///< Priority: high + 2
+  osPriorityHigh3         = 40+3,       ///< Priority: high + 3
+  osPriorityHigh4         = 40+4,       ///< Priority: high + 4
+  osPriorityHigh5         = 40+5,       ///< Priority: high + 5
+  osPriorityHigh6         = 40+6,       ///< Priority: high + 6
+  osPriorityHigh7         = 40+7,       ///< Priority: high + 7
+  osPriorityRealtime      = 48,         ///< Priority: realtime
+  osPriorityRealtime1     = 48+1,       ///< Priority: realtime + 1
+  osPriorityRealtime2     = 48+2,       ///< Priority: realtime + 2
+  osPriorityRealtime3     = 48+3,       ///< Priority: realtime + 3
+  osPriorityRealtime4     = 48+4,       ///< Priority: realtime + 4
+  osPriorityRealtime5     = 48+5,       ///< Priority: realtime + 5
+  osPriorityRealtime6     = 48+6,       ///< Priority: realtime + 6
+  osPriorityRealtime7     = 48+7,       ///< Priority: realtime + 7
+  osPriorityISR           = 56,         ///< Reserved for ISR deferred thread.
+  osPriorityError         = -1,         ///< System cannot determine priority or illegal priority.
+  osPriorityReserved      = 0x7FFFFFFF  ///< Prevents enum down-size compiler optimization.
+} osPriority_t;
+ 
+/// Entry point of a thread.
+typedef void (*osThreadFunc_t) (void *argument);
+ 
+/// Timer callback function.
+typedef void (*osTimerFunc_t) (void *argument);
+ 
+/// Timer type.
+typedef enum {
+  osTimerOnce               = 0,          ///< One-shot timer.
+  osTimerPeriodic           = 1           ///< Repeating timer.
+} osTimerType_t;
+ 
+// Timeout value.
+#define osWaitForever         0xFFFFFFFFU ///< Wait forever timeout value.
+ 
+// Flags options (\ref osThreadFlagsWait and \ref osEventFlagsWait).
+#define osFlagsWaitAny        0x00000000U ///< Wait for any flag (default).
+#define osFlagsWaitAll        0x00000001U ///< Wait for all flags.
+#define osFlagsNoClear        0x00000002U ///< Do not clear flags which have been specified to wait for.
+ 
+// Flags errors (returned by osThreadFlagsXxxx and osEventFlagsXxxx).
+#define osFlagsError          0x80000000U ///< Error indicator.
+#define osFlagsErrorUnknown   0xFFFFFFFFU ///< osError (-1).
+#define osFlagsErrorTimeout   0xFFFFFFFEU ///< osErrorTimeout (-2).
+#define osFlagsErrorResource  0xFFFFFFFDU ///< osErrorResource (-3).
+#define osFlagsErrorParameter 0xFFFFFFFCU ///< osErrorParameter (-4).
+#define osFlagsErrorISR       0xFFFFFFFAU ///< osErrorISR (-6).
+ 
+// Thread attributes (attr_bits in \ref osThreadAttr_t).
+#define osThreadDetached      0x00000000U ///< Thread created in detached mode (default)
+#define osThreadJoinable      0x00000001U ///< Thread created in joinable mode
+ 
+// Mutex attributes (attr_bits in \ref osMutexAttr_t).
+#define osMutexRecursive      0x00000001U ///< Recursive mutex.
+#define osMutexPrioInherit    0x00000002U ///< Priority inherit protocol.
+#define osMutexRobust         0x00000008U ///< Robust mutex.
+ 
+/// Status code values returned by CMSIS-RTOS functions.
+typedef enum {
+  osOK                      =  0,         ///< Operation completed successfully.
+  osError                   = -1,         ///< Unspecified RTOS error: run-time error but no other error message fits.
+  osErrorTimeout            = -2,         ///< Operation not completed within the timeout period.
+  osErrorResource           = -3,         ///< Resource not available.
+  osErrorParameter          = -4,         ///< Parameter error.
+  osErrorNoMemory           = -5,         ///< System is out of memory: it was impossible to allocate or reserve memory for the operation.
+  osErrorISR                = -6,         ///< Not allowed in ISR context: the function cannot be called from interrupt service routines.
+  osStatusReserved          = 0x7FFFFFFF  ///< Prevents enum down-size compiler optimization.
+} osStatus_t;
+ 
+ 
+/// \details Thread ID identifies the thread.
+typedef void *osThreadId_t;
+ 
+/// \details Timer ID identifies the timer.
+typedef void *osTimerId_t;
+ 
+/// \details Event Flags ID identifies the event flags.
+typedef void *osEventFlagsId_t;
+ 
+/// \details Mutex ID identifies the mutex.
+typedef void *osMutexId_t;
+ 
+/// \details Semaphore ID identifies the semaphore.
+typedef void *osSemaphoreId_t;
+ 
+/// \details Memory Pool ID identifies the memory pool.
+typedef void *osMemoryPoolId_t;
+ 
+/// \details Message Queue ID identifies the message queue.
+typedef void *osMessageQueueId_t;
+ 
+ 
+#ifndef TZ_MODULEID_T
+#define TZ_MODULEID_T
+/// \details Data type that identifies secure software modules called by a process.
+typedef uint32_t TZ_ModuleId_t;
+#endif
+ 
+ 
+/// Attributes structure for thread.
+typedef struct {
+  const char                   *name;   ///< name of the thread
+  uint32_t                 attr_bits;   ///< attribute bits
+  void                      *cb_mem;    ///< memory for control block
+  uint32_t                   cb_size;   ///< size of provided memory for control block
+  void                   *stack_mem;    ///< memory for stack
+  uint32_t                stack_size;   ///< size of stack
+  osPriority_t              priority;   ///< initial thread priority (default: osPriorityNormal)
+  TZ_ModuleId_t            tz_module;   ///< TrustZone module identifier
+  uint32_t                  reserved;   ///< reserved (must be 0)
+} osThreadAttr_t;
+ 
+/// Attributes structure for timer.
+typedef struct {
+  const char                   *name;   ///< name of the timer
+  uint32_t                 attr_bits;   ///< attribute bits
+  void                      *cb_mem;    ///< memory for control block
+  uint32_t                   cb_size;   ///< size of provided memory for control block
+} osTimerAttr_t;
+ 
+/// Attributes structure for event flags.
+typedef struct {
+  const char                   *name;   ///< name of the event flags
+  uint32_t                 attr_bits;   ///< attribute bits
+  void                      *cb_mem;    ///< memory for control block
+  uint32_t                   cb_size;   ///< size of provided memory for control block
+} osEventFlagsAttr_t;
+ 
+/// Attributes structure for mutex.
+typedef struct {
+  const char                   *name;   ///< name of the mutex
+  uint32_t                 attr_bits;   ///< attribute bits
+  void                      *cb_mem;    ///< memory for control block
+  uint32_t                   cb_size;   ///< size of provided memory for control block
+} osMutexAttr_t;
+ 
+/// Attributes structure for semaphore.
+typedef struct {
+  const char                   *name;   ///< name of the semaphore
+  uint32_t                 attr_bits;   ///< attribute bits
+  void                      *cb_mem;    ///< memory for control block
+  uint32_t                   cb_size;   ///< size of provided memory for control block
+} osSemaphoreAttr_t;
+ 
+/// Attributes structure for memory pool.
+typedef struct {
+  const char                   *name;   ///< name of the memory pool
+  uint32_t                 attr_bits;   ///< attribute bits
+  void                      *cb_mem;    ///< memory for control block
+  uint32_t                   cb_size;   ///< size of provided memory for control block
+  void                      *mp_mem;    ///< memory for data storage
+  uint32_t                   mp_size;   ///< size of provided memory for data storage 
+} osMemoryPoolAttr_t;
+ 
+/// Attributes structure for message queue.
+typedef struct {
+  const char                   *name;   ///< name of the message queue
+  uint32_t                 attr_bits;   ///< attribute bits
+  void                      *cb_mem;    ///< memory for control block
+  uint32_t                   cb_size;   ///< size of provided memory for control block
+  void                      *mq_mem;    ///< memory for data storage
+  uint32_t                   mq_size;   ///< size of provided memory for data storage 
+} osMessageQueueAttr_t;
+ 
+ 
+//  ==== Kernel Management Functions ====
+ 
+/// Initialize the RTOS Kernel.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osKernelInitialize (void);
+ 
+///  Get RTOS Kernel Information.
+/// \param[out]    version       pointer to buffer for retrieving version information.
+/// \param[out]    id_buf        pointer to buffer for retrieving kernel identification string.
+/// \param[in]     id_size       size of buffer for kernel identification string.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osKernelGetInfo (osVersion_t *version, char *id_buf, uint32_t id_size);
+ 
+/// Get the current RTOS Kernel state.
+/// \return current RTOS Kernel state.
+osKernelState_t osKernelGetState (void);
+ 
+/// Start the RTOS Kernel scheduler.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osKernelStart (void);
+ 
+/// Lock the RTOS Kernel scheduler.
+/// \return previous lock state (1 - locked, 0 - not locked, error code if negative).
+int32_t osKernelLock (void);
+ 
+/// Unlock the RTOS Kernel scheduler.
+/// \return previous lock state (1 - locked, 0 - not locked, error code if negative).
+int32_t osKernelUnlock (void);
+ 
+/// Restore the RTOS Kernel scheduler lock state.
+/// \param[in]     lock          lock state obtained by \ref osKernelLock or \ref osKernelUnlock.
+/// \return new lock state (1 - locked, 0 - not locked, error code if negative).
+int32_t osKernelRestoreLock (int32_t lock);
+ 
+/// Suspend the RTOS Kernel scheduler.
+/// \return time in ticks, for how long the system can sleep or power-down.
+uint32_t osKernelSuspend (void);
+ 
+/// Resume the RTOS Kernel scheduler.
+/// \param[in]     sleep_ticks   time in ticks for how long the system was in sleep or power-down mode.
+void osKernelResume (uint32_t sleep_ticks);
+ 
+/// Get the RTOS kernel tick count.
+/// \return RTOS kernel current tick count.
+uint32_t osKernelGetTickCount (void);
+ 
+/// Get the RTOS kernel tick frequency.
+/// \return frequency of the kernel tick in hertz, i.e. kernel ticks per second.
+uint32_t osKernelGetTickFreq (void);
+ 
+/// Get the RTOS kernel system timer count.
+/// \return RTOS kernel current system timer count as 32-bit value.
+uint32_t osKernelGetSysTimerCount (void);
+ 
+/// Get the RTOS kernel system timer frequency.
+/// \return frequency of the system timer in hertz, i.e. timer ticks per second.
+uint32_t osKernelGetSysTimerFreq (void);
+ 
+ 
+//  ==== Thread Management Functions ====
+ 
+/// Create a thread and add it to Active Threads.
+/// \param[in]     func          thread function.
+/// \param[in]     argument      pointer that is passed to the thread function as start argument.
+/// \param[in]     attr          thread attributes; NULL: default values.
+/// \return thread ID for reference by other functions or NULL in case of error.
+osThreadId_t osThreadNew (osThreadFunc_t func, void *argument, const osThreadAttr_t *attr);
+ 
+/// Get name of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \return name as null-terminated string.
+const char *osThreadGetName (osThreadId_t thread_id);
+ 
+/// Return the thread ID of the current running thread.
+/// \return thread ID for reference by other functions or NULL in case of error.
+osThreadId_t osThreadGetId (void);
+ 
+/// Get current thread state of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \return current thread state of the specified thread.
+osThreadState_t osThreadGetState (osThreadId_t thread_id);
+ 
+/// Get stack size of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \return stack size in bytes.
+uint32_t osThreadGetStackSize (osThreadId_t thread_id);
+ 
+/// Get available stack space of a thread based on stack watermark recording during execution.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \return remaining stack space in bytes.
+uint32_t osThreadGetStackSpace (osThreadId_t thread_id);
+ 
+/// Change priority of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \param[in]     priority      new priority value for the thread function.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osThreadSetPriority (osThreadId_t thread_id, osPriority_t priority);
+ 
+/// Get current priority of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \return current priority value of the specified thread.
+osPriority_t osThreadGetPriority (osThreadId_t thread_id);
+ 
+/// Pass control to next thread that is in state \b READY.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osThreadYield (void);
+ 
+/// Suspend execution of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osThreadSuspend (osThreadId_t thread_id);
+ 
+/// Resume execution of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osThreadResume (osThreadId_t thread_id);
+ 
+/// Detach a thread (thread storage can be reclaimed when thread terminates).
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osThreadDetach (osThreadId_t thread_id);
+ 
+/// Wait for specified thread to terminate.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osThreadJoin (osThreadId_t thread_id);
+ 
+/// Terminate execution of current running thread.
+__NO_RETURN void osThreadExit (void);
+ 
+/// Terminate execution of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osThreadTerminate (osThreadId_t thread_id);
+ 
+/// Get number of active threads.
+/// \return number of active threads.
+uint32_t osThreadGetCount (void);
+ 
+/// Enumerate active threads.
+/// \param[out]    thread_array  pointer to array for retrieving thread IDs.
+/// \param[in]     array_items   maximum number of items in array for retrieving thread IDs.
+/// \return number of enumerated threads.
+uint32_t osThreadEnumerate (osThreadId_t *thread_array, uint32_t array_items);
+ 
+ 
+//  ==== Thread Flags Functions ====
+ 
+/// Set the specified Thread Flags of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadNew or \ref osThreadGetId.
+/// \param[in]     flags         specifies the flags of the thread that shall be set.
+/// \return thread flags after setting or error code if highest bit set.
+uint32_t osThreadFlagsSet (osThreadId_t thread_id, uint32_t flags);
+ 
+/// Clear the specified Thread Flags of current running thread.
+/// \param[in]     flags         specifies the flags of the thread that shall be cleared.
+/// \return thread flags before clearing or error code if highest bit set.
+uint32_t osThreadFlagsClear (uint32_t flags);
+ 
+/// Get the current Thread Flags of current running thread.
+/// \return current thread flags.
+uint32_t osThreadFlagsGet (void);
+ 
+/// Wait for one or more Thread Flags of the current running thread to become signaled.
+/// \param[in]     flags         specifies the flags to wait for.
+/// \param[in]     options       specifies flags options (osFlagsXxxx).
+/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return thread flags before clearing or error code if highest bit set.
+uint32_t osThreadFlagsWait (uint32_t flags, uint32_t options, uint32_t timeout);
+ 
+ 
+//  ==== Generic Wait Functions ====
+ 
+/// Wait for Timeout (Time Delay).
+/// \param[in]     ticks         \ref CMSIS_RTOS_TimeOutValue "time ticks" value
+/// \return status code that indicates the execution status of the function.
+osStatus_t osDelay (uint32_t ticks);
+ 
+/// Wait until specified time.
+/// \param[in]     ticks         absolute time in ticks
+/// \return status code that indicates the execution status of the function.
+osStatus_t osDelayUntil (uint32_t ticks);
+ 
+ 
+//  ==== Timer Management Functions ====
+ 
+/// Create and Initialize a timer.
+/// \param[in]     func          function pointer to callback function.
+/// \param[in]     type          \ref osTimerOnce for one-shot or \ref osTimerPeriodic for periodic behavior.
+/// \param[in]     argument      argument to the timer callback function.
+/// \param[in]     attr          timer attributes; NULL: default values.
+/// \return timer ID for reference by other functions or NULL in case of error.
+osTimerId_t osTimerNew (osTimerFunc_t func, osTimerType_t type, void *argument, const osTimerAttr_t *attr);
+ 
+/// Get name of a timer.
+/// \param[in]     timer_id      timer ID obtained by \ref osTimerNew.
+/// \return name as null-terminated string.
+const char *osTimerGetName (osTimerId_t timer_id);
+ 
+/// Start or restart a timer.
+/// \param[in]     timer_id      timer ID obtained by \ref osTimerNew.
+/// \param[in]     ticks         \ref CMSIS_RTOS_TimeOutValue "time ticks" value of the timer.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osTimerStart (osTimerId_t timer_id, uint32_t ticks);
+ 
+/// Stop a timer.
+/// \param[in]     timer_id      timer ID obtained by \ref osTimerNew.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osTimerStop (osTimerId_t timer_id);
+ 
+/// Check if a timer is running.
+/// \param[in]     timer_id      timer ID obtained by \ref osTimerNew.
+/// \return 0 not running, 1 running.
+uint32_t osTimerIsRunning (osTimerId_t timer_id);
+ 
+/// Delete a timer.
+/// \param[in]     timer_id      timer ID obtained by \ref osTimerNew.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osTimerDelete (osTimerId_t timer_id);
+ 
+ 
+//  ==== Event Flags Management Functions ====
+ 
+/// Create and Initialize an Event Flags object.
+/// \param[in]     attr          event flags attributes; NULL: default values.
+/// \return event flags ID for reference by other functions or NULL in case of error.
+osEventFlagsId_t osEventFlagsNew (const osEventFlagsAttr_t *attr);
+ 
+/// Get name of an Event Flags object.
+/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.
+/// \return name as null-terminated string.
+const char *osEventFlagsGetName (osEventFlagsId_t ef_id);
+ 
+/// Set the specified Event Flags.
+/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.
+/// \param[in]     flags         specifies the flags that shall be set.
+/// \return event flags after setting or error code if highest bit set.
+uint32_t osEventFlagsSet (osEventFlagsId_t ef_id, uint32_t flags);
+ 
+/// Clear the specified Event Flags.
+/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.
+/// \param[in]     flags         specifies the flags that shall be cleared.
+/// \return event flags before clearing or error code if highest bit set.
+uint32_t osEventFlagsClear (osEventFlagsId_t ef_id, uint32_t flags);
+ 
+/// Get the current Event Flags.
+/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.
+/// \return current event flags.
+uint32_t osEventFlagsGet (osEventFlagsId_t ef_id);
+ 
+/// Wait for one or more Event Flags to become signaled.
+/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.
+/// \param[in]     flags         specifies the flags to wait for.
+/// \param[in]     options       specifies flags options (osFlagsXxxx).
+/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return event flags before clearing or error code if highest bit set.
+uint32_t osEventFlagsWait (osEventFlagsId_t ef_id, uint32_t flags, uint32_t options, uint32_t timeout);
+ 
+/// Delete an Event Flags object.
+/// \param[in]     ef_id         event flags ID obtained by \ref osEventFlagsNew.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osEventFlagsDelete (osEventFlagsId_t ef_id);
+ 
+ 
+//  ==== Mutex Management Functions ====
+ 
+/// Create and Initialize a Mutex object.
+/// \param[in]     attr          mutex attributes; NULL: default values.
+/// \return mutex ID for reference by other functions or NULL in case of error.
+osMutexId_t osMutexNew (const osMutexAttr_t *attr);
+ 
+/// Get name of a Mutex object.
+/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexNew.
+/// \return name as null-terminated string.
+const char *osMutexGetName (osMutexId_t mutex_id);
+ 
+/// Acquire a Mutex or timeout if it is locked.
+/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexNew.
+/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osMutexAcquire (osMutexId_t mutex_id, uint32_t timeout);
+ 
+/// Release a Mutex that was acquired by \ref osMutexAcquire.
+/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexNew.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osMutexRelease (osMutexId_t mutex_id);
+ 
+/// Get Thread which owns a Mutex object.
+/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexNew.
+/// \return thread ID of owner thread or NULL when mutex was not acquired.
+osThreadId_t osMutexGetOwner (osMutexId_t mutex_id);
+ 
+/// Delete a Mutex object.
+/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexNew.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osMutexDelete (osMutexId_t mutex_id);
+ 
+ 
+//  ==== Semaphore Management Functions ====
+ 
+/// Create and Initialize a Semaphore object.
+/// \param[in]     max_count     maximum number of available tokens.
+/// \param[in]     initial_count initial number of available tokens.
+/// \param[in]     attr          semaphore attributes; NULL: default values.
+/// \return semaphore ID for reference by other functions or NULL in case of error.
+osSemaphoreId_t osSemaphoreNew (uint32_t max_count, uint32_t initial_count, const osSemaphoreAttr_t *attr);
+ 
+/// Get name of a Semaphore object.
+/// \param[in]     semaphore_id  semaphore ID obtained by \ref osSemaphoreNew.
+/// \return name as null-terminated string.
+const char *osSemaphoreGetName (osSemaphoreId_t semaphore_id);
+ 
+/// Acquire a Semaphore token or timeout if no tokens are available.
+/// \param[in]     semaphore_id  semaphore ID obtained by \ref osSemaphoreNew.
+/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osSemaphoreAcquire (osSemaphoreId_t semaphore_id, uint32_t timeout);
+ 
+/// Release a Semaphore token up to the initial maximum count.
+/// \param[in]     semaphore_id  semaphore ID obtained by \ref osSemaphoreNew.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osSemaphoreRelease (osSemaphoreId_t semaphore_id);
+ 
+/// Get current Semaphore token count.
+/// \param[in]     semaphore_id  semaphore ID obtained by \ref osSemaphoreNew.
+/// \return number of tokens available.
+uint32_t osSemaphoreGetCount (osSemaphoreId_t semaphore_id);
+ 
+/// Delete a Semaphore object.
+/// \param[in]     semaphore_id  semaphore ID obtained by \ref osSemaphoreNew.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osSemaphoreDelete (osSemaphoreId_t semaphore_id);
+ 
+ 
+//  ==== Memory Pool Management Functions ====
+ 
+/// Create and Initialize a Memory Pool object.
+/// \param[in]     block_count   maximum number of memory blocks in memory pool.
+/// \param[in]     block_size    memory block size in bytes.
+/// \param[in]     attr          memory pool attributes; NULL: default values.
+/// \return memory pool ID for reference by other functions or NULL in case of error.
+osMemoryPoolId_t osMemoryPoolNew (uint32_t block_count, uint32_t block_size, const osMemoryPoolAttr_t *attr);
+ 
+/// Get name of a Memory Pool object.
+/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.
+/// \return name as null-terminated string.
+const char *osMemoryPoolGetName (osMemoryPoolId_t mp_id);
+ 
+/// Allocate a memory block from a Memory Pool.
+/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.
+/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return address of the allocated memory block or NULL in case of no memory is available.
+void *osMemoryPoolAlloc (osMemoryPoolId_t mp_id, uint32_t timeout);
+ 
+/// Return an allocated memory block back to a Memory Pool.
+/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.
+/// \param[in]     block         address of the allocated memory block to be returned to the memory pool.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osMemoryPoolFree (osMemoryPoolId_t mp_id, void *block);
+ 
+/// Get maximum number of memory blocks in a Memory Pool.
+/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.
+/// \return maximum number of memory blocks.
+uint32_t osMemoryPoolGetCapacity (osMemoryPoolId_t mp_id);
+ 
+/// Get memory block size in a Memory Pool.
+/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.
+/// \return memory block size in bytes.
+uint32_t osMemoryPoolGetBlockSize (osMemoryPoolId_t mp_id);
+ 
+/// Get number of memory blocks used in a Memory Pool.
+/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.
+/// \return number of memory blocks used.
+uint32_t osMemoryPoolGetCount (osMemoryPoolId_t mp_id);
+ 
+/// Get number of memory blocks available in a Memory Pool.
+/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.
+/// \return number of memory blocks available.
+uint32_t osMemoryPoolGetSpace (osMemoryPoolId_t mp_id);
+ 
+/// Delete a Memory Pool object.
+/// \param[in]     mp_id         memory pool ID obtained by \ref osMemoryPoolNew.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osMemoryPoolDelete (osMemoryPoolId_t mp_id);
+ 
+ 
+//  ==== Message Queue Management Functions ====
+ 
+/// Create and Initialize a Message Queue object.
+/// \param[in]     msg_count     maximum number of messages in queue.
+/// \param[in]     msg_size      maximum message size in bytes.
+/// \param[in]     attr          message queue attributes; NULL: default values.
+/// \return message queue ID for reference by other functions or NULL in case of error.
+osMessageQueueId_t osMessageQueueNew (uint32_t msg_count, uint32_t msg_size, const osMessageQueueAttr_t *attr);
+ 
+/// Get name of a Message Queue object.
+/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.
+/// \return name as null-terminated string.
+const char *osMessageQueueGetName (osMessageQueueId_t mq_id);
+ 
+/// Put a Message into a Queue or timeout if Queue is full.
+/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.
+/// \param[in]     msg_ptr       pointer to buffer with message to put into a queue.
+/// \param[in]     msg_prio      message priority.
+/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osMessageQueuePut (osMessageQueueId_t mq_id, const void *msg_ptr, uint8_t msg_prio, uint32_t timeout);
+ 
+/// Get a Message from a Queue or timeout if Queue is empty.
+/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.
+/// \param[out]    msg_ptr       pointer to buffer for message to get from a queue.
+/// \param[out]    msg_prio      pointer to buffer for message priority or NULL.
+/// \param[in]     timeout       \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osMessageQueueGet (osMessageQueueId_t mq_id, void *msg_ptr, uint8_t *msg_prio, uint32_t timeout);
+ 
+/// Get maximum number of messages in a Message Queue.
+/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.
+/// \return maximum number of messages.
+uint32_t osMessageQueueGetCapacity (osMessageQueueId_t mq_id);
+ 
+/// Get maximum message size in a Memory Pool.
+/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.
+/// \return maximum message size in bytes.
+uint32_t osMessageQueueGetMsgSize (osMessageQueueId_t mq_id);
+ 
+/// Get number of queued messages in a Message Queue.
+/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.
+/// \return number of queued messages.
+uint32_t osMessageQueueGetCount (osMessageQueueId_t mq_id);
+ 
+/// Get number of available slots for messages in a Message Queue.
+/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.
+/// \return number of available slots for messages.
+uint32_t osMessageQueueGetSpace (osMessageQueueId_t mq_id);
+ 
+/// Reset a Message Queue to initial empty state.
+/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osMessageQueueReset (osMessageQueueId_t mq_id);
+ 
+/// Delete a Message Queue object.
+/// \param[in]     mq_id         message queue ID obtained by \ref osMessageQueueNew.
+/// \return status code that indicates the execution status of the function.
+osStatus_t osMessageQueueDelete (osMessageQueueId_t mq_id);
+ 
+ 
+#ifdef  __cplusplus
+}
+#endif
+ 
+#endif  // CMSIS_OS2_H_
diff --git a/RTOS2/Include/os_tick.h b/RTOS2/Include/os_tick.h
new file mode 100644
index 0000000..8f7cdf6
--- /dev/null
+++ b/RTOS2/Include/os_tick.h
@@ -0,0 +1,71 @@
+/**************************************************************************//**
+ * @file     os_tick.h
+ * @brief    CMSIS OS Tick header file
+ * @version  V1.0.1
+ * @date     24. November 2017
+ ******************************************************************************/
+/*
+ * Copyright (c) 2017-2017 ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef OS_TICK_H
+#define OS_TICK_H
+
+#include <stdint.h>
+
+/// IRQ Handler.
+#ifndef IRQHANDLER_T
+#define IRQHANDLER_T
+typedef void (*IRQHandler_t) (void);
+#endif
+
+/// Setup OS Tick timer to generate periodic RTOS Kernel Ticks
+/// \param[in]     freq         tick frequency in Hz
+/// \param[in]     handler      tick IRQ handler
+/// \return 0 on success, -1 on error.
+int32_t  OS_Tick_Setup (uint32_t freq, IRQHandler_t handler);
+
+/// Enable OS Tick timer interrupt
+void     OS_Tick_Enable (void);
+
+/// Disable OS Tick timer interrupt
+void     OS_Tick_Disable (void);
+
+/// Acknowledge execution of OS Tick timer interrupt
+void     OS_Tick_AcknowledgeIRQ (void);
+
+/// Get OS Tick timer IRQ number
+/// \return OS Tick IRQ number
+int32_t  OS_Tick_GetIRQn (void);
+
+/// Get OS Tick timer clock frequency
+/// \return OS Tick timer clock frequency in Hz
+uint32_t OS_Tick_GetClock (void);
+
+/// Get OS Tick timer interval reload value
+/// \return OS Tick timer interval reload value
+uint32_t OS_Tick_GetInterval (void);
+
+/// Get OS Tick timer counter value
+/// \return OS Tick timer counter value
+uint32_t OS_Tick_GetCount (void);
+
+/// Get OS Tick timer overflow status
+/// \return OS Tick overflow status (1 - overflow, 0 - no overflow).
+uint32_t OS_Tick_GetOverflow (void);
+
+#endif  /* OS_TICK_H */
diff --git a/RTOS2/Source/os_systick.c b/RTOS2/Source/os_systick.c
new file mode 100644
index 0000000..985a9d9
--- /dev/null
+++ b/RTOS2/Source/os_systick.c
@@ -0,0 +1,132 @@
+/**************************************************************************//**
+ * @file     os_systick.c
+ * @brief    CMSIS OS Tick SysTick implementation
+ * @version  V1.0.1
+ * @date     24. November 2017
+ ******************************************************************************/
+/*
+ * Copyright (c) 2017-2017 ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "os_tick.h"
+
+//lint -emacro((923,9078),SCB,SysTick) "cast from unsigned long to pointer"
+#include "RTE_Components.h"
+#include CMSIS_device_header
+
+#ifdef  SysTick
+
+#ifndef SYSTICK_IRQ_PRIORITY
+#define SYSTICK_IRQ_PRIORITY    0xFFU
+#endif
+
+static uint8_t PendST;
+
+// Setup OS Tick.
+__WEAK int32_t OS_Tick_Setup (uint32_t freq, IRQHandler_t handler) {
+  uint32_t load;
+  (void)handler;
+
+  if (freq == 0U) {
+    //lint -e{904} "Return statement before end of function"
+    return (-1);
+  }
+
+  load = (SystemCoreClock / freq) - 1U;
+  if (load > 0x00FFFFFFU) {
+    //lint -e{904} "Return statement before end of function"
+    return (-1);
+  }
+
+  // Set SysTick Interrupt Priority
+#if   ((defined(__ARM_ARCH_8M_MAIN__) && (__ARM_ARCH_8M_MAIN__ != 0)) || \
+       (defined(__CORTEX_M)           && (__CORTEX_M           == 7U)))
+  SCB->SHPR[11] = SYSTICK_IRQ_PRIORITY;
+#elif  (defined(__ARM_ARCH_8M_BASE__) && (__ARM_ARCH_8M_BASE__ != 0))
+  SCB->SHPR[1] |= ((uint32_t)SYSTICK_IRQ_PRIORITY << 24);
+#elif ((defined(__ARM_ARCH_7M__)      && (__ARM_ARCH_7M__      != 0)) || \
+       (defined(__ARM_ARCH_7EM__)     && (__ARM_ARCH_7EM__     != 0)))
+  SCB->SHP[11]  = SYSTICK_IRQ_PRIORITY;
+#elif  (defined(__ARM_ARCH_6M__)      && (__ARM_ARCH_6M__      != 0))
+  SCB->SHP[1]  |= ((uint32_t)SYSTICK_IRQ_PRIORITY << 24);
+#else
+#error "Unknown ARM Core!"
+#endif
+
+  SysTick->CTRL =  SysTick_CTRL_CLKSOURCE_Msk | SysTick_CTRL_TICKINT_Msk;
+  SysTick->LOAD =  load;
+  SysTick->VAL  =  0U;
+
+  PendST = 0U;
+
+  return (0);
+}
+
+/// Enable OS Tick.
+__WEAK void OS_Tick_Enable (void) {
+
+  if (PendST != 0U) {
+    PendST = 0U;
+    SCB->ICSR = SCB_ICSR_PENDSTSET_Msk;
+  }
+
+  SysTick->CTRL |=  SysTick_CTRL_ENABLE_Msk;
+}
+
+/// Disable OS Tick.
+__WEAK void OS_Tick_Disable (void) {
+
+  SysTick->CTRL &= ~SysTick_CTRL_ENABLE_Msk;
+
+  if ((SCB->ICSR & SCB_ICSR_PENDSTSET_Msk) != 0U) {
+    SCB->ICSR = SCB_ICSR_PENDSTCLR_Msk;
+    PendST = 1U;
+  }
+}
+
+// Acknowledge OS Tick IRQ.
+__WEAK void OS_Tick_AcknowledgeIRQ (void) {
+  (void)SysTick->CTRL;
+}
+
+// Get OS Tick IRQ number.
+__WEAK int32_t  OS_Tick_GetIRQn (void) {
+  return ((int32_t)SysTick_IRQn);
+}
+
+// Get OS Tick clock.
+__WEAK uint32_t OS_Tick_GetClock (void) {
+  return (SystemCoreClock);
+}
+
+// Get OS Tick interval.
+__WEAK uint32_t OS_Tick_GetInterval (void) {
+  return (SysTick->LOAD + 1U);
+}
+
+// Get OS Tick count value.
+__WEAK uint32_t OS_Tick_GetCount (void) {
+  uint32_t load = SysTick->LOAD;
+  return  (load - SysTick->VAL);
+}
+
+// Get OS Tick overflow status.
+__WEAK uint32_t OS_Tick_GetOverflow (void) {
+  return ((SysTick->CTRL >> 16) & 1U);
+}
+
+#endif  // SysTick
diff --git a/RTOS2/Source/os_tick_gtim.c b/RTOS2/Source/os_tick_gtim.c
new file mode 100644
index 0000000..22cfa93
--- /dev/null
+++ b/RTOS2/Source/os_tick_gtim.c
@@ -0,0 +1,187 @@
+/**************************************************************************//**
+ * @file     os_tick_gtim.c
+ * @brief    CMSIS OS Tick implementation for Generic Timer
+ * @version  V1.0.1
+ * @date     24. November 2017
+ ******************************************************************************/
+/*
+ * Copyright (c) 2017 ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "os_tick.h"
+#include "irq_ctrl.h"
+
+#include "RTE_Components.h"
+#include CMSIS_device_header
+
+#ifndef GTIM_IRQ_PRIORITY
+#define GTIM_IRQ_PRIORITY           0xFFU
+#endif
+
+#ifndef GTIM_IRQ_NUM
+#define GTIM_IRQ_NUM                SecurePhyTimer_IRQn
+#endif
+
+// Timer interrupt pending flag
+static uint8_t GTIM_PendIRQ;
+
+// Timer tick frequency
+static uint32_t GTIM_Clock;
+
+// Timer load value
+static uint32_t GTIM_Load;
+
+// Setup OS Tick.
+int32_t OS_Tick_Setup (uint32_t freq, IRQHandler_t handler) {
+  uint32_t prio, bits;
+
+  if (freq == 0U) {
+    return (-1);
+  }
+
+  GTIM_PendIRQ = 0U;
+
+  // Get timer clock
+#ifdef SCTR_BASE
+  GTIM_Clock = *(uint32_t*)(SCTR_BASE+0x20);
+#else
+  // FVP REFCLK CNTControl 100MHz
+  GTIM_Clock = 100000000UL;
+#endif
+
+  PL1_SetCounterFrequency(GTIM_Clock);
+
+  // Calculate load value
+  GTIM_Load = (GTIM_Clock / freq) - 1U;
+
+  // Disable Generic Timer and set load value
+  PL1_SetControl(0U);
+  PL1_SetLoadValue(GTIM_Load);
+
+  // Disable corresponding IRQ
+  IRQ_Disable(GTIM_IRQ_NUM);
+  IRQ_ClearPending(GTIM_IRQ_NUM);
+
+  // Determine number of implemented priority bits
+  IRQ_SetPriority(GTIM_IRQ_NUM, 0xFFU);
+
+  prio = IRQ_GetPriority(GTIM_IRQ_NUM);
+
+  // At least bits [7:4] must be implemented
+  if ((prio & 0xF0U) == 0U) {
+    return (-1);
+  }
+
+  for (bits = 0; bits < 4; bits++) {
+    if ((prio & 0x01) != 0) {
+      break;
+    }
+    prio >>= 1;
+  }
+  
+  // Adjust configured priority to the number of implemented priority bits
+  prio = (GTIM_IRQ_PRIORITY << bits) & 0xFFUL;
+
+  // Set Private Timer interrupt priority
+  IRQ_SetPriority(GTIM_IRQ_NUM, prio-1U);
+
+  // Set edge-triggered IRQ
+  IRQ_SetMode(GTIM_IRQ_NUM, IRQ_MODE_TRIG_EDGE);
+
+  // Register tick interrupt handler function
+  IRQ_SetHandler(GTIM_IRQ_NUM, handler);
+
+  // Enable corresponding interrupt
+  IRQ_Enable(GTIM_IRQ_NUM);
+
+  // Enable system counter and timer control
+#ifdef SCTR_BASE
+  *(uint32_t*)SCTR_BASE |= 3U;
+#endif
+
+  // Enable timer control
+  PL1_SetControl(1U);
+
+  return (0);
+}
+
+/// Enable OS Tick.
+void OS_Tick_Enable (void) {
+  uint32_t ctrl;
+
+  // Set pending interrupt if flag set
+  if (GTIM_PendIRQ != 0U) {
+    GTIM_PendIRQ = 0U;
+    IRQ_SetPending (GTIM_IRQ_NUM);
+  }
+
+  // Start the Private Timer
+  ctrl = PL1_GetControl();
+  // Set bit: Timer enable
+  ctrl |= 1U;
+  PL1_SetControl(ctrl);
+}
+
+/// Disable OS Tick.
+void OS_Tick_Disable (void) {
+  uint32_t ctrl;
+
+  // Stop the Private Timer
+  ctrl = PL1_GetControl();
+  // Clear bit: Timer enable
+  ctrl &= ~1U;
+  PL1_SetControl(ctrl);
+
+  // Remember pending interrupt flag
+  if (IRQ_GetPending(GTIM_IRQ_NUM) != 0) {
+    IRQ_ClearPending(GTIM_IRQ_NUM);
+    GTIM_PendIRQ = 1U;
+  }
+}
+
+// Acknowledge OS Tick IRQ.
+void OS_Tick_AcknowledgeIRQ (void) {
+  IRQ_ClearPending (GTIM_IRQ_NUM);
+  PL1_SetLoadValue(GTIM_Load);
+}
+
+// Get OS Tick IRQ number.
+int32_t  OS_Tick_GetIRQn (void) {
+  return (GTIM_IRQ_NUM);
+}
+
+// Get OS Tick clock.
+uint32_t OS_Tick_GetClock (void) {
+  return (GTIM_Clock);
+}
+
+// Get OS Tick interval.
+uint32_t OS_Tick_GetInterval (void) {
+  return (GTIM_Load + 1U);
+}
+
+// Get OS Tick count value.
+uint32_t OS_Tick_GetCount (void) {
+  return (GTIM_Load - PL1_GetCurrentValue());
+}
+
+// Get OS Tick overflow status.
+uint32_t OS_Tick_GetOverflow (void) {
+  CNTP_CTL_Type cntp_ctl;
+  cntp_ctl.w = PL1_GetControl();
+  return (cntp_ctl.b.ISTATUS);
+}
diff --git a/RTOS2/Source/os_tick_ptim.c b/RTOS2/Source/os_tick_ptim.c
new file mode 100644
index 0000000..e75ac3a
--- /dev/null
+++ b/RTOS2/Source/os_tick_ptim.c
@@ -0,0 +1,165 @@
+/**************************************************************************//**
+ * @file     os_tick_ptim.c
+ * @brief    CMSIS OS Tick implementation for Private Timer
+ * @version  V1.0.2
+ * @date     02. March 2018
+ ******************************************************************************/
+/*
+ * Copyright (c) 2017-2018 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "RTE_Components.h"
+#include CMSIS_device_header
+
+#if defined(PTIM)
+
+#include "os_tick.h"
+#include "irq_ctrl.h"
+
+#ifndef PTIM_IRQ_PRIORITY
+#define PTIM_IRQ_PRIORITY           0xFFU
+#endif
+
+static uint8_t PTIM_PendIRQ;        // Timer interrupt pending flag
+
+// Setup OS Tick.
+int32_t OS_Tick_Setup (uint32_t freq, IRQHandler_t handler) {
+  uint32_t load;
+  uint32_t prio;
+  uint32_t bits;
+
+  if (freq == 0U) {
+    return (-1);
+  }
+
+  PTIM_PendIRQ = 0U;
+
+  // Private Timer runs with the system frequency
+  load = (SystemCoreClock / freq) - 1U;
+
+  // Disable Private Timer and set load value
+  PTIM_SetControl   (0U);
+  PTIM_SetLoadValue (load);
+
+  // Disable corresponding IRQ
+  IRQ_Disable     (PrivTimer_IRQn);
+  IRQ_ClearPending(PrivTimer_IRQn);
+
+  // Determine number of implemented priority bits
+  IRQ_SetPriority (PrivTimer_IRQn, 0xFFU);
+
+  prio = IRQ_GetPriority (PrivTimer_IRQn);
+
+  // At least bits [7:4] must be implemented
+  if ((prio & 0xF0U) == 0U) {
+    return (-1);
+  }
+
+  for (bits = 0; bits < 4; bits++) {
+    if ((prio & 0x01) != 0) {
+      break;
+    }
+    prio >>= 1;
+  }
+
+  // Adjust configured priority to the number of implemented priority bits
+  prio = (PTIM_IRQ_PRIORITY << bits) & 0xFFUL;
+
+  // Set Private Timer interrupt priority
+  IRQ_SetPriority(PrivTimer_IRQn, prio-1U);
+
+  // Set edge-triggered IRQ
+  IRQ_SetMode(PrivTimer_IRQn, IRQ_MODE_TRIG_EDGE);
+
+  // Register tick interrupt handler function
+  IRQ_SetHandler(PrivTimer_IRQn, handler);
+
+  // Enable corresponding interrupt
+  IRQ_Enable (PrivTimer_IRQn);
+
+  // Set bits: IRQ enable and Auto reload
+  PTIM_SetControl (0x06U);
+
+  return (0);
+}
+
+/// Enable OS Tick.
+void OS_Tick_Enable (void) {
+  uint32_t ctrl;
+
+  // Set pending interrupt if flag set
+  if (PTIM_PendIRQ != 0U) {
+    PTIM_PendIRQ = 0U;
+    IRQ_SetPending (PrivTimer_IRQn);
+  }
+
+  // Start the Private Timer
+  ctrl  = PTIM_GetControl();
+  // Set bit: Timer enable
+  ctrl |= 1U;
+  PTIM_SetControl (ctrl);
+}
+
+/// Disable OS Tick.
+void OS_Tick_Disable (void) {
+  uint32_t ctrl;
+
+  // Stop the Private Timer
+  ctrl  = PTIM_GetControl();
+  // Clear bit: Timer enable
+  ctrl &= ~1U;
+  PTIM_SetControl (ctrl);
+
+  // Remember pending interrupt flag
+  if (IRQ_GetPending(PrivTimer_IRQn) != 0) {
+    IRQ_ClearPending (PrivTimer_IRQn);
+    PTIM_PendIRQ = 1U;
+  }
+}
+
+// Acknowledge OS Tick IRQ.
+void OS_Tick_AcknowledgeIRQ (void) {
+  PTIM_ClearEventFlag();
+}
+
+// Get OS Tick IRQ number.
+int32_t  OS_Tick_GetIRQn (void) {
+  return (PrivTimer_IRQn);
+}
+
+// Get OS Tick clock.
+uint32_t OS_Tick_GetClock (void) {
+  return (SystemCoreClock);
+}
+
+// Get OS Tick interval.
+uint32_t OS_Tick_GetInterval (void) {
+  return (PTIM_GetLoadValue() + 1U);
+}
+
+// Get OS Tick count value.
+uint32_t OS_Tick_GetCount (void) {
+  uint32_t load = PTIM_GetLoadValue();
+  return  (load - PTIM_GetCurrentValue());
+}
+
+// Get OS Tick overflow status.
+uint32_t OS_Tick_GetOverflow (void) {
+  return (PTIM->ISR & 1);
+}
+
+#endif  // PTIM
diff --git a/RTOS2/Template/cmsis_os.h b/RTOS2/Template/cmsis_os.h
new file mode 100644
index 0000000..376dbf7
--- /dev/null
+++ b/RTOS2/Template/cmsis_os.h
@@ -0,0 +1,922 @@
+/*
+ * Copyright (c) 2013-2018 Arm Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ----------------------------------------------------------------------
+ *
+ * $Date:        18. June 2018
+ * $Revision:    V2.1.3
+ *
+ * Project:      CMSIS-RTOS API
+ * Title:        cmsis_os.h template header file
+ *
+ * Version 0.02
+ *    Initial Proposal Phase
+ * Version 0.03
+ *    osKernelStart added, optional feature: main started as thread
+ *    osSemaphores have standard behavior
+ *    osTimerCreate does not start the timer, added osTimerStart
+ *    osThreadPass is renamed to osThreadYield
+ * Version 1.01
+ *    Support for C++ interface
+ *     - const attribute removed from the osXxxxDef_t typedefs
+ *     - const attribute added to the osXxxxDef macros
+ *    Added: osTimerDelete, osMutexDelete, osSemaphoreDelete
+ *    Added: osKernelInitialize
+ * Version 1.02
+ *    Control functions for short timeouts in microsecond resolution:
+ *    Added: osKernelSysTick, osKernelSysTickFrequency, osKernelSysTickMicroSec
+ *    Removed: osSignalGet 
+ * Version 2.0.0
+ *    OS objects creation without macros (dynamic creation and resource allocation):
+ *     - added: osXxxxNew functions which replace osXxxxCreate
+ *     - added: osXxxxAttr_t structures
+ *     - deprecated: osXxxxCreate functions, osXxxxDef_t structures
+ *     - deprecated: osXxxxDef and osXxxx macros
+ *    osStatus codes simplified and renamed to osStatus_t
+ *    osEvent return structure deprecated
+ *    Kernel:
+ *     - added: osKernelInfo_t and osKernelGetInfo
+ *     - added: osKernelState_t and osKernelGetState (replaces osKernelRunning)
+ *     - added: osKernelLock, osKernelUnlock
+ *     - added: osKernelSuspend, osKernelResume
+ *     - added: osKernelGetTickCount, osKernelGetTickFreq
+ *     - renamed osKernelSysTick to osKernelGetSysTimerCount
+ *     - replaced osKernelSysTickFrequency with osKernelGetSysTimerFreq
+ *     - deprecated osKernelSysTickMicroSec
+ *    Thread:
+ *     - extended number of thread priorities
+ *     - renamed osPrioriry to osPrioriry_t
+ *     - replaced osThreadCreate with osThreadNew
+ *     - added: osThreadGetName
+ *     - added: osThreadState_t and osThreadGetState
+ *     - added: osThreadGetStackSize, osThreadGetStackSpace
+ *     - added: osThreadSuspend, osThreadResume
+ *     - added: osThreadJoin, osThreadDetach, osThreadExit
+ *     - added: osThreadGetCount, osThreadEnumerate
+ *     - added: Thread Flags (moved from Signals) 
+ *    Signals:
+ *     - renamed osSignals to osThreadFlags (moved to Thread Flags)
+ *     - changed return value of Set/Clear/Wait functions
+ *     - Clear function limited to current running thread
+ *     - extended Wait function (options)
+ *     - added: osThreadFlagsGet
+ *    Event Flags:
+ *     - added new independent object for handling Event Flags
+ *    Delay and Wait functions:
+ *     - added: osDelayUntil
+ *     - deprecated: osWait
+ *    Timer:
+ *     - replaced osTimerCreate with osTimerNew
+ *     - added: osTimerGetName, osTimerIsRunning
+ *    Mutex:
+ *     - extended: attributes (Recursive, Priority Inherit, Robust)
+ *     - replaced osMutexCreate with osMutexNew
+ *     - renamed osMutexWait to osMutexAcquire
+ *     - added: osMutexGetName, osMutexGetOwner
+ *    Semaphore:
+ *     - extended: maximum and initial token count
+ *     - replaced osSemaphoreCreate with osSemaphoreNew
+ *     - renamed osSemaphoreWait to osSemaphoreAcquire (changed return value)
+ *     - added: osSemaphoreGetName, osSemaphoreGetCount
+ *    Memory Pool:
+ *     - using osMemoryPool prefix instead of osPool
+ *     - replaced osPoolCreate with osMemoryPoolNew
+ *     - extended osMemoryPoolAlloc (timeout)
+ *     - added: osMemoryPoolGetName
+ *     - added: osMemoryPoolGetCapacity, osMemoryPoolGetBlockSize
+ *     - added: osMemoryPoolGetCount, osMemoryPoolGetSpace
+ *     - added: osMemoryPoolDelete
+ *     - deprecated: osPoolCAlloc
+ *    Message Queue:
+ *     - extended: fixed size message instead of a single 32-bit value
+ *     - using osMessageQueue prefix instead of osMessage
+ *     - replaced osMessageCreate with osMessageQueueNew
+ *     - updated: osMessageQueuePut, osMessageQueueGet
+ *     - added: osMessageQueueGetName
+ *     - added: osMessageQueueGetCapacity, osMessageQueueGetMsgSize
+ *     - added: osMessageQueueGetCount, osMessageQueueGetSpace
+ *     - added: osMessageQueueReset, osMessageQueueDelete
+ *    Mail Queue: 
+ *     - deprecated (superseded by extended Message Queue functionality)
+ * Version 2.1.0
+ *    Support for critical and uncritical sections (nesting safe):
+ *    - updated: osKernelLock, osKernelUnlock
+ *    - added: osKernelRestoreLock
+ *    Updated Thread and Event Flags:
+ *    - changed flags parameter and return type from int32_t to uint32_t
+ * Version 2.1.1
+ *    Additional functions allowed to be called from Interrupt Service Routines:
+ *    - osKernelGetTickCount, osKernelGetTickFreq
+ *    Changed Kernel Tick type to uint32_t:
+ *    - updated: osKernelGetTickCount, osDelayUntil
+ * Version 2.1.2
+ *    Additional functions allowed to be called from Interrupt Service Routines:
+ *    - osKernelGetInfo, osKernelGetState
+ * Version 2.1.3
+ *    Additional functions allowed to be called from Interrupt Service Routines:
+ *    - osThreadGetId
+ *---------------------------------------------------------------------------*/
+ 
+#ifndef CMSIS_OS_H_
+#define CMSIS_OS_H_
+ 
+/// \b osCMSIS identifies the CMSIS-RTOS API version.
+#define osCMSIS             0x20001U    ///< API version (main[31:16].sub[15:0])
+ 
+/// \note CAN BE CHANGED: \b osCMSIS_KERNEL identifies the underlying RTOS kernel and version number.
+#define osCMSIS_KERNEL      0x10000U    ///< RTOS identification and version (main[31:16].sub[15:0])
+ 
+/// \note CAN BE CHANGED: \b osKernelSystemId identifies the underlying RTOS kernel.
+#define osKernelSystemId "KERNEL V1.0"  ///< RTOS identification string
+ 
+/// \note CAN BE CHANGED: \b osFeature_xxx identifies RTOS features.
+#define osFeature_MainThread  0         ///< main thread      1=main can be thread, 0=not available
+#define osFeature_Signals     16U       ///< maximum number of Signal Flags available per thread
+#define osFeature_Semaphore   65535U    ///< maximum count for \ref osSemaphoreCreate function
+#define osFeature_Wait        0         ///< osWait function: 1=available, 0=not available
+#define osFeature_SysTick     1         ///< osKernelSysTick functions: 1=available, 0=not available
+#define osFeature_Pool        1         ///< Memory Pools:    1=available, 0=not available
+#define osFeature_MessageQ    1         ///< Message Queues:  1=available, 0=not available
+#define osFeature_MailQ       1         ///< Mail Queues:     1=available, 0=not available
+ 
+#if (osCMSIS >= 0x20000U)
+#include "cmsis_os2.h"
+#else
+#include <stdint.h>
+#include <stddef.h>
+#endif
+ 
+#ifdef  __cplusplus
+extern "C"
+{
+#endif
+ 
+ 
+// ==== Enumerations, structures, defines ====
+ 
+/// Priority values.
+#if (osCMSIS < 0x20000U)
+typedef enum {
+  osPriorityIdle          = -3,         ///< Priority: idle (lowest)
+  osPriorityLow           = -2,         ///< Priority: low
+  osPriorityBelowNormal   = -1,         ///< Priority: below normal
+  osPriorityNormal        =  0,         ///< Priority: normal (default)
+  osPriorityAboveNormal   = +1,         ///< Priority: above normal
+  osPriorityHigh          = +2,         ///< Priority: high
+  osPriorityRealtime      = +3,         ///< Priority: realtime (highest)
+  osPriorityError         = 0x84,       ///< System cannot determine priority or illegal priority.
+  osPriorityReserved      = 0x7FFFFFFF  ///< Prevents enum down-size compiler optimization.
+} osPriority;
+#else
+#define osPriority osPriority_t
+#endif
+
+/// Entry point of a thread.
+typedef void (*os_pthread) (void const *argument);
+ 
+/// Entry point of a timer call back function.
+typedef void (*os_ptimer) (void const *argument);
+ 
+/// Timer type.
+#if (osCMSIS < 0x20000U)
+typedef enum {
+  osTimerOnce             = 0,          ///< One-shot timer.
+  osTimerPeriodic         = 1           ///< Repeating timer.
+} os_timer_type;
+#else
+#define os_timer_type osTimerType_t
+#endif
+ 
+/// Timeout value.
+#define osWaitForever       0xFFFFFFFFU ///< Wait forever timeout value.
+ 
+/// Status code values returned by CMSIS-RTOS functions.
+#if (osCMSIS < 0x20000U)
+typedef enum {
+  osOK                    =    0,       ///< Function completed; no error or event occurred.
+  osEventSignal           = 0x08,       ///< Function completed; signal event occurred.
+  osEventMessage          = 0x10,       ///< Function completed; message event occurred.
+  osEventMail             = 0x20,       ///< Function completed; mail event occurred.
+  osEventTimeout          = 0x40,       ///< Function completed; timeout occurred.
+  osErrorParameter        = 0x80,       ///< Parameter error: a mandatory parameter was missing or specified an incorrect object.
+  osErrorResource         = 0x81,       ///< Resource not available: a specified resource was not available.
+  osErrorTimeoutResource  = 0xC1,       ///< Resource not available within given time: a specified resource was not available within the timeout period.
+  osErrorISR              = 0x82,       ///< Not allowed in ISR context: the function cannot be called from interrupt service routines.
+  osErrorISRRecursive     = 0x83,       ///< Function called multiple times from ISR with same object.
+  osErrorPriority         = 0x84,       ///< System cannot determine priority or thread has illegal priority.
+  osErrorNoMemory         = 0x85,       ///< System is out of memory: it was impossible to allocate or reserve memory for the operation.
+  osErrorValue            = 0x86,       ///< Value of a parameter is out of range.
+  osErrorOS               = 0xFF,       ///< Unspecified RTOS error: run-time error but no other error message fits.
+  osStatusReserved        = 0x7FFFFFFF  ///< Prevents enum down-size compiler optimization.
+} osStatus;
+#else
+typedef int32_t                  osStatus;
+#define osEventSignal           (0x08)
+#define osEventMessage          (0x10)
+#define osEventMail             (0x20)
+#define osEventTimeout          (0x40)
+#define osErrorOS               osError
+#define osErrorTimeoutResource  osErrorTimeout
+#define osErrorISRRecursive     (-126)
+#define osErrorValue            (-127)
+#define osErrorPriority         (-128)
+#endif
+ 
+ 
+// >>> the following data type definitions may be adapted towards a specific RTOS
+ 
+/// Thread ID identifies the thread.
+/// \note CAN BE CHANGED: \b implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef void *osThreadId;
+#else
+#define osThreadId osThreadId_t
+#endif
+ 
+/// Timer ID identifies the timer.
+/// \note CAN BE CHANGED: \b implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef void *osTimerId;
+#else
+#define osTimerId osTimerId_t
+#endif
+ 
+/// Mutex ID identifies the mutex.
+/// \note CAN BE CHANGED: \b implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef void *osMutexId;
+#else
+#define osMutexId osMutexId_t
+#endif
+ 
+/// Semaphore ID identifies the semaphore.
+/// \note CAN BE CHANGED: \b implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef void *osSemaphoreId;
+#else
+#define osSemaphoreId osSemaphoreId_t
+#endif
+ 
+/// Pool ID identifies the memory pool.
+/// \note CAN BE CHANGED: \b implementation specific in every CMSIS-RTOS.
+typedef void *osPoolId;
+ 
+/// Message ID identifies the message queue.
+/// \note CAN BE CHANGED: \b implementation specific in every CMSIS-RTOS.
+typedef void *osMessageQId;
+ 
+/// Mail ID identifies the mail queue.
+/// \note CAN BE CHANGED: \b implementation specific in every CMSIS-RTOS.
+typedef void *osMailQId;
+ 
+ 
+/// Thread Definition structure contains startup information of a thread.
+/// \note CAN BE CHANGED: \b os_thread_def is implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef struct os_thread_def {
+  os_pthread                 pthread;   ///< start address of thread function
+  osPriority               tpriority;   ///< initial thread priority
+  uint32_t                 instances;   ///< maximum number of instances of that thread function
+  uint32_t                 stacksize;   ///< stack size requirements in bytes; 0 is default stack size
+} osThreadDef_t;
+#else
+typedef struct os_thread_def {
+  os_pthread                 pthread;   ///< start address of thread function
+  osThreadAttr_t                attr;   ///< thread attributes
+} osThreadDef_t;
+#endif
+ 
+/// Timer Definition structure contains timer parameters.
+/// \note CAN BE CHANGED: \b os_timer_def is implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef struct os_timer_def {
+  os_ptimer                   ptimer;   ///< start address of a timer function
+} osTimerDef_t;
+#else
+typedef struct os_timer_def {
+  os_ptimer                   ptimer;   ///< start address of a timer function
+  osTimerAttr_t                 attr;   ///< timer attributes
+} osTimerDef_t;
+#endif
+ 
+/// Mutex Definition structure contains setup information for a mutex.
+/// \note CAN BE CHANGED: \b os_mutex_def is implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef struct os_mutex_def {
+  uint32_t                     dummy;   ///< dummy value
+} osMutexDef_t;
+#else
+#define osMutexDef_t osMutexAttr_t
+#endif
+ 
+/// Semaphore Definition structure contains setup information for a semaphore.
+/// \note CAN BE CHANGED: \b os_semaphore_def is implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef struct os_semaphore_def {
+  uint32_t                     dummy;   ///< dummy value
+} osSemaphoreDef_t;
+#else
+#define osSemaphoreDef_t osSemaphoreAttr_t
+#endif
+ 
+/// Definition structure for memory block allocation.
+/// \note CAN BE CHANGED: \b os_pool_def is implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef struct os_pool_def {
+  uint32_t                   pool_sz;   ///< number of items (elements) in the pool
+  uint32_t                   item_sz;   ///< size of an item
+  void                         *pool;   ///< pointer to memory for pool
+} osPoolDef_t;
+#else
+typedef struct os_pool_def {
+  uint32_t                   pool_sz;   ///< number of items (elements) in the pool
+  uint32_t                   item_sz;   ///< size of an item
+  osMemoryPoolAttr_t            attr;   ///< memory pool attributes
+} osPoolDef_t;
+#endif
+ 
+/// Definition structure for message queue.
+/// \note CAN BE CHANGED: \b os_messageQ_def is implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef struct os_messageQ_def {
+  uint32_t                  queue_sz;   ///< number of elements in the queue
+  void                         *pool;   ///< memory array for messages
+} osMessageQDef_t;
+#else
+typedef struct os_messageQ_def {
+  uint32_t                  queue_sz;   ///< number of elements in the queue
+  osMessageQueueAttr_t          attr;   ///< message queue attributes
+} osMessageQDef_t;
+#endif
+ 
+/// Definition structure for mail queue.
+/// \note CAN BE CHANGED: \b os_mailQ_def is implementation specific in every CMSIS-RTOS.
+#if (osCMSIS < 0x20000U)
+typedef struct os_mailQ_def {
+  uint32_t                  queue_sz;   ///< number of elements in the queue
+  uint32_t                   item_sz;   ///< size of an item
+  void                         *pool;   ///< memory array for mail
+} osMailQDef_t;
+#else
+typedef struct os_mailQ_def {
+  uint32_t                  queue_sz;   ///< number of elements in the queue
+  uint32_t                   item_sz;   ///< size of an item
+  void                         *mail;   ///< pointer to mail
+  osMemoryPoolAttr_t         mp_attr;   ///< memory pool attributes
+  osMessageQueueAttr_t       mq_attr;   ///< message queue attributes
+} osMailQDef_t;
+#endif
+ 
+ 
+/// Event structure contains detailed information about an event.
+typedef struct {
+  osStatus                    status;   ///< status code: event or error information
+  union {
+    uint32_t                       v;   ///< message as 32-bit value
+    void                          *p;   ///< message or mail as void pointer
+    int32_t                  signals;   ///< signal flags
+  } value;                              ///< event value
+  union {
+    osMailQId                mail_id;   ///< mail id obtained by \ref osMailCreate
+    osMessageQId          message_id;   ///< message id obtained by \ref osMessageCreate
+  } def;                                ///< event definition
+} osEvent;
+ 
+ 
+//  ==== Kernel Management Functions ====
+ 
+/// Initialize the RTOS Kernel for creating objects.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osKernelInitialize (void);
+#endif
+ 
+/// Start the RTOS Kernel scheduler.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osKernelStart (void);
+#endif
+ 
+/// Check if the RTOS kernel is already started.
+/// \return 0 RTOS is not started, 1 RTOS is started.
+#if (osCMSIS < 0x20000U)
+int32_t osKernelRunning(void);
+#endif
+ 
+#if (defined(osFeature_SysTick) && (osFeature_SysTick != 0))  // System Timer available
+ 
+/// Get the RTOS kernel system timer counter.
+/// \return RTOS kernel system timer as 32-bit value 
+#if (osCMSIS < 0x20000U)
+uint32_t osKernelSysTick (void);
+#else
+#define  osKernelSysTick osKernelGetSysTimerCount
+#endif
+ 
+/// The RTOS kernel system timer frequency in Hz.
+/// \note Reflects the system timer setting and is typically defined in a configuration file.
+#if (osCMSIS < 0x20000U)
+#define osKernelSysTickFrequency 100000000
+#endif
+ 
+/// Convert a microseconds value to a RTOS kernel system timer value.
+/// \param         microsec     time value in microseconds.
+/// \return time value normalized to the \ref osKernelSysTickFrequency
+#if (osCMSIS < 0x20000U)
+#define osKernelSysTickMicroSec(microsec) (((uint64_t)microsec * (osKernelSysTickFrequency)) / 1000000)
+#else
+#define osKernelSysTickMicroSec(microsec) (((uint64_t)microsec *  osKernelGetSysTimerFreq()) / 1000000)
+#endif
+ 
+#endif  // System Timer available
+ 
+ 
+//  ==== Thread Management Functions ====
+ 
+/// Create a Thread Definition with function, priority, and stack requirements.
+/// \param         name          name of the thread function.
+/// \param         priority      initial priority of the thread function.
+/// \param         instances     number of possible thread instances.
+/// \param         stacksz       stack size (in bytes) requirements for the thread function.
+/// \note CAN BE CHANGED: The parameters to \b osThreadDef shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#if defined (osObjectsExternal)  // object is external
+#define osThreadDef(name, priority, instances, stacksz) \
+extern const osThreadDef_t os_thread_def_##name
+#else                            // define the object
+#if (osCMSIS < 0x20000U)
+#define osThreadDef(name, priority, instances, stacksz) \
+const osThreadDef_t os_thread_def_##name = \
+{ (name), (priority), (instances), (stacksz) }
+#else
+#define osThreadDef(name, priority, instances, stacksz) \
+const osThreadDef_t os_thread_def_##name = \
+{ (name), \
+  { NULL, osThreadDetached, NULL, 0U, NULL, 8*((stacksz+7)/8), (priority), 0U, 0U } }
+#endif
+#endif
+ 
+/// Access a Thread definition.
+/// \param         name          name of the thread definition object.
+/// \note CAN BE CHANGED: The parameter to \b osThread shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#define osThread(name) \
+&os_thread_def_##name
+ 
+/// Create a thread and add it to Active Threads and set it to state READY.
+/// \param[in]     thread_def    thread definition referenced with \ref osThread.
+/// \param[in]     argument      pointer that is passed to the thread function as start argument.
+/// \return thread ID for reference by other functions or NULL in case of error.
+osThreadId osThreadCreate (const osThreadDef_t *thread_def, void *argument);
+ 
+/// Return the thread ID of the current running thread.
+/// \return thread ID for reference by other functions or NULL in case of error.
+#if (osCMSIS < 0x20000U)
+osThreadId osThreadGetId (void);
+#endif
+ 
+/// Change priority of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadCreate or \ref osThreadGetId.
+/// \param[in]     priority      new priority value for the thread function.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osThreadSetPriority (osThreadId thread_id, osPriority priority);
+#endif
+ 
+/// Get current priority of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadCreate or \ref osThreadGetId.
+/// \return current priority value of the specified thread.
+#if (osCMSIS < 0x20000U)
+osPriority osThreadGetPriority (osThreadId thread_id);
+#endif
+ 
+/// Pass control to next thread that is in state \b READY.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osThreadYield (void);
+#endif
+ 
+/// Terminate execution of a thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadCreate or \ref osThreadGetId.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osThreadTerminate (osThreadId thread_id);
+#endif
+ 
+ 
+//  ==== Signal Management ====
+ 
+/// Set the specified Signal Flags of an active thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadCreate or \ref osThreadGetId.
+/// \param[in]     signals       specifies the signal flags of the thread that should be set.
+/// \return previous signal flags of the specified thread or 0x80000000 in case of incorrect parameters.
+int32_t osSignalSet (osThreadId thread_id, int32_t signals);
+ 
+/// Clear the specified Signal Flags of an active thread.
+/// \param[in]     thread_id     thread ID obtained by \ref osThreadCreate or \ref osThreadGetId.
+/// \param[in]     signals       specifies the signal flags of the thread that shall be cleared.
+/// \return previous signal flags of the specified thread or 0x80000000 in case of incorrect parameters or call from ISR.
+int32_t osSignalClear (osThreadId thread_id, int32_t signals);
+ 
+/// Wait for one or more Signal Flags to become signaled for the current \b RUNNING thread.
+/// \param[in]     signals       wait until all specified signal flags set or 0 for any single signal flag.
+/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return event flag information or error code.
+osEvent osSignalWait (int32_t signals, uint32_t millisec);
+ 
+ 
+//  ==== Generic Wait Functions ====
+ 
+/// Wait for Timeout (Time Delay).
+/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue "time delay" value
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osDelay (uint32_t millisec);
+#endif
+ 
+#if (defined (osFeature_Wait) && (osFeature_Wait != 0))  // Generic Wait available
+ 
+/// Wait for Signal, Message, Mail, or Timeout.
+/// \param[in] millisec          \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out
+/// \return event that contains signal, message, or mail information or error code.
+osEvent osWait (uint32_t millisec);
+ 
+#endif  // Generic Wait available
+ 
+ 
+//  ==== Timer Management Functions ====
+ 
+/// Define a Timer object.
+/// \param         name          name of the timer object.
+/// \param         function      name of the timer call back function.
+/// \note CAN BE CHANGED: The parameter to \b osTimerDef shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#if defined (osObjectsExternal)  // object is external
+#define osTimerDef(name, function) \
+extern const osTimerDef_t os_timer_def_##name
+#else                            // define the object
+#if (osCMSIS < 0x20000U)
+#define osTimerDef(name, function) \
+const osTimerDef_t os_timer_def_##name = { (function) }
+#else
+#define osTimerDef(name, function) \
+const osTimerDef_t os_timer_def_##name = \
+{ (function), { NULL, 0U, NULL, 0U } }
+#endif
+#endif
+ 
+/// Access a Timer definition.
+/// \param         name          name of the timer object.
+/// \note CAN BE CHANGED: The parameter to \b osTimer shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#define osTimer(name) \
+&os_timer_def_##name
+ 
+/// Create and Initialize a timer.
+/// \param[in]     timer_def     timer object referenced with \ref osTimer.
+/// \param[in]     type          osTimerOnce for one-shot or osTimerPeriodic for periodic behavior.
+/// \param[in]     argument      argument to the timer call back function.
+/// \return timer ID for reference by other functions or NULL in case of error.
+osTimerId osTimerCreate (const osTimerDef_t *timer_def, os_timer_type type, void *argument);
+ 
+/// Start or restart a timer.
+/// \param[in]     timer_id      timer ID obtained by \ref osTimerCreate.
+/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue "time delay" value of the timer.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osTimerStart (osTimerId timer_id, uint32_t millisec);
+#endif
+ 
+/// Stop a timer.
+/// \param[in]     timer_id      timer ID obtained by \ref osTimerCreate.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osTimerStop (osTimerId timer_id);
+#endif
+ 
+/// Delete a timer.
+/// \param[in]     timer_id      timer ID obtained by \ref osTimerCreate.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osTimerDelete (osTimerId timer_id);
+#endif
+ 
+ 
+//  ==== Mutex Management Functions ====
+ 
+/// Define a Mutex.
+/// \param         name          name of the mutex object.
+/// \note CAN BE CHANGED: The parameter to \b osMutexDef shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#if defined (osObjectsExternal)  // object is external
+#define osMutexDef(name) \
+extern const osMutexDef_t os_mutex_def_##name
+#else                            // define the object
+#if (osCMSIS < 0x20000U)
+#define osMutexDef(name) \
+const osMutexDef_t os_mutex_def_##name = { 0 }
+#else
+#define osMutexDef(name) \
+const osMutexDef_t os_mutex_def_##name = \
+{ NULL, osMutexRecursive | osMutexPrioInherit | osMutexRobust, NULL, 0U }
+#endif
+#endif
+ 
+/// Access a Mutex definition.
+/// \param         name          name of the mutex object.
+/// \note CAN BE CHANGED: The parameter to \b osMutex shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#define osMutex(name) \
+&os_mutex_def_##name
+ 
+/// Create and Initialize a Mutex object.
+/// \param[in]     mutex_def     mutex definition referenced with \ref osMutex.
+/// \return mutex ID for reference by other functions or NULL in case of error.
+osMutexId osMutexCreate (const osMutexDef_t *mutex_def);
+ 
+/// Wait until a Mutex becomes available.
+/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexCreate.
+/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osMutexWait (osMutexId mutex_id, uint32_t millisec);
+#else
+#define  osMutexWait osMutexAcquire
+#endif
+ 
+/// Release a Mutex that was obtained by \ref osMutexWait.
+/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexCreate.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osMutexRelease (osMutexId mutex_id);
+#endif
+ 
+/// Delete a Mutex object.
+/// \param[in]     mutex_id      mutex ID obtained by \ref osMutexCreate.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osMutexDelete (osMutexId mutex_id);
+#endif
+ 
+ 
+//  ==== Semaphore Management Functions ====
+ 
+#if (defined (osFeature_Semaphore) && (osFeature_Semaphore != 0U))  // Semaphore available
+ 
+/// Define a Semaphore object.
+/// \param         name          name of the semaphore object.
+/// \note CAN BE CHANGED: The parameter to \b osSemaphoreDef shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#if defined (osObjectsExternal)  // object is external
+#define osSemaphoreDef(name) \
+extern const osSemaphoreDef_t os_semaphore_def_##name
+#else                            // define the object
+#if (osCMSIS < 0x20000U)
+#define osSemaphoreDef(name) \
+const osSemaphoreDef_t os_semaphore_def_##name = { 0 }
+#else
+#define osSemaphoreDef(name) \
+const osSemaphoreDef_t os_semaphore_def_##name = \
+{ NULL, 0U, NULL, 0U }
+#endif
+#endif
+ 
+/// Access a Semaphore definition.
+/// \param         name          name of the semaphore object.
+/// \note CAN BE CHANGED: The parameter to \b osSemaphore shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#define osSemaphore(name) \
+&os_semaphore_def_##name
+ 
+/// Create and Initialize a Semaphore object.
+/// \param[in]     semaphore_def semaphore definition referenced with \ref osSemaphore.
+/// \param[in]     count         maximum and initial number of available tokens.
+/// \return semaphore ID for reference by other functions or NULL in case of error.
+osSemaphoreId osSemaphoreCreate (const osSemaphoreDef_t *semaphore_def, int32_t count);
+ 
+/// Wait until a Semaphore token becomes available.
+/// \param[in]     semaphore_id  semaphore object referenced with \ref osSemaphoreCreate.
+/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return number of available tokens, or -1 in case of incorrect parameters.
+int32_t osSemaphoreWait (osSemaphoreId semaphore_id, uint32_t millisec);
+ 
+/// Release a Semaphore token.
+/// \param[in]     semaphore_id  semaphore object referenced with \ref osSemaphoreCreate.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osSemaphoreRelease (osSemaphoreId semaphore_id);
+#endif
+ 
+/// Delete a Semaphore object.
+/// \param[in]     semaphore_id  semaphore object referenced with \ref osSemaphoreCreate.
+/// \return status code that indicates the execution status of the function.
+#if (osCMSIS < 0x20000U)
+osStatus osSemaphoreDelete (osSemaphoreId semaphore_id);
+#endif
+ 
+#endif  // Semaphore available
+ 
+ 
+//  ==== Memory Pool Management Functions ====
+ 
+#if (defined(osFeature_Pool) && (osFeature_Pool != 0))  // Memory Pool available
+ 
+/// \brief Define a Memory Pool.
+/// \param         name          name of the memory pool.
+/// \param         no            maximum number of blocks (objects) in the memory pool.
+/// \param         type          data type of a single block (object).
+/// \note CAN BE CHANGED: The parameter to \b osPoolDef shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#if defined (osObjectsExternal)  // object is external
+#define osPoolDef(name, no, type) \
+extern const osPoolDef_t os_pool_def_##name
+#else                            // define the object
+#if (osCMSIS < 0x20000U)
+#define osPoolDef(name, no, type) \
+const osPoolDef_t os_pool_def_##name = \
+{ (no), sizeof(type), NULL }
+#else
+#define osPoolDef(name, no, type) \
+const osPoolDef_t os_pool_def_##name = \
+{ (no), sizeof(type), { NULL, 0U, NULL, 0U, NULL, 0U } }
+#endif
+#endif
+ 
+/// \brief Access a Memory Pool definition.
+/// \param         name          name of the memory pool
+/// \note CAN BE CHANGED: The parameter to \b osPool shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#define osPool(name) \
+&os_pool_def_##name
+ 
+/// Create and Initialize a Memory Pool object.
+/// \param[in]     pool_def      memory pool definition referenced with \ref osPool.
+/// \return memory pool ID for reference by other functions or NULL in case of error.
+osPoolId osPoolCreate (const osPoolDef_t *pool_def);
+ 
+/// Allocate a memory block from a Memory Pool.
+/// \param[in]     pool_id       memory pool ID obtain referenced with \ref osPoolCreate.
+/// \return address of the allocated memory block or NULL in case of no memory available.
+void *osPoolAlloc (osPoolId pool_id);
+ 
+/// Allocate a memory block from a Memory Pool and set memory block to zero.
+/// \param[in]     pool_id       memory pool ID obtain referenced with \ref osPoolCreate.
+/// \return address of the allocated memory block or NULL in case of no memory available.
+void *osPoolCAlloc (osPoolId pool_id);
+ 
+/// Return an allocated memory block back to a Memory Pool.
+/// \param[in]     pool_id       memory pool ID obtain referenced with \ref osPoolCreate.
+/// \param[in]     block         address of the allocated memory block to be returned to the memory pool.
+/// \return status code that indicates the execution status of the function.
+osStatus osPoolFree (osPoolId pool_id, void *block);
+ 
+#endif  // Memory Pool available
+ 
+ 
+//  ==== Message Queue Management Functions ====
+ 
+#if (defined(osFeature_MessageQ) && (osFeature_MessageQ != 0))  // Message Queue available
+  
+/// \brief Create a Message Queue Definition.
+/// \param         name          name of the queue.
+/// \param         queue_sz      maximum number of messages in the queue.
+/// \param         type          data type of a single message element (for debugger).
+/// \note CAN BE CHANGED: The parameter to \b osMessageQDef shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#if defined (osObjectsExternal)  // object is external
+#define osMessageQDef(name, queue_sz, type) \
+extern const osMessageQDef_t os_messageQ_def_##name
+#else                            // define the object
+#if (osCMSIS < 0x20000U)
+#define osMessageQDef(name, queue_sz, type) \
+const osMessageQDef_t os_messageQ_def_##name = \
+{ (queue_sz), NULL }
+#else
+#define osMessageQDef(name, queue_sz, type) \
+const osMessageQDef_t os_messageQ_def_##name = \
+{ (queue_sz), { NULL, 0U, NULL, 0U, NULL, 0U } }
+#endif
+#endif
+ 
+/// \brief Access a Message Queue Definition.
+/// \param         name          name of the queue
+/// \note CAN BE CHANGED: The parameter to \b osMessageQ shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#define osMessageQ(name) \
+&os_messageQ_def_##name
+ 
+/// Create and Initialize a Message Queue object.
+/// \param[in]     queue_def     message queue definition referenced with \ref osMessageQ.
+/// \param[in]     thread_id     thread ID (obtained by \ref osThreadCreate or \ref osThreadGetId) or NULL.
+/// \return message queue ID for reference by other functions or NULL in case of error.
+osMessageQId osMessageCreate (const osMessageQDef_t *queue_def, osThreadId thread_id);
+ 
+/// Put a Message to a Queue.
+/// \param[in]     queue_id      message queue ID obtained with \ref osMessageCreate.
+/// \param[in]     info          message information.
+/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return status code that indicates the execution status of the function.
+osStatus osMessagePut (osMessageQId queue_id, uint32_t info, uint32_t millisec);
+ 
+/// Get a Message from a Queue or timeout if Queue is empty.
+/// \param[in]     queue_id      message queue ID obtained with \ref osMessageCreate.
+/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return event information that includes status code.
+osEvent osMessageGet (osMessageQId queue_id, uint32_t millisec);
+ 
+#endif  // Message Queue available
+ 
+ 
+//  ==== Mail Queue Management Functions ====
+ 
+#if (defined(osFeature_MailQ) && (osFeature_MailQ != 0))  // Mail Queue available
+ 
+/// \brief Create a Mail Queue Definition.
+/// \param         name          name of the queue.
+/// \param         queue_sz      maximum number of mails in the queue.
+/// \param         type          data type of a single mail element.
+/// \note CAN BE CHANGED: The parameter to \b osMailQDef shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#if defined (osObjectsExternal)  // object is external
+#define osMailQDef(name, queue_sz, type) \
+extern const osMailQDef_t os_mailQ_def_##name
+#else                            // define the object
+#if (osCMSIS < 0x20000U)
+#define osMailQDef(name, queue_sz, type) \
+const osMailQDef_t os_mailQ_def_##name = \
+{ (queue_sz), sizeof(type), NULL }
+#else
+#define osMailQDef(name, queue_sz, type) \
+static void *os_mail_p_##name[2]; \
+const osMailQDef_t os_mailQ_def_##name = \
+{ (queue_sz), sizeof(type), (&os_mail_p_##name), \
+  { NULL, 0U, NULL, 0U, NULL, 0U }, \
+  { NULL, 0U, NULL, 0U, NULL, 0U } }
+#endif
+#endif
+ 
+/// \brief Access a Mail Queue Definition.
+/// \param         name          name of the queue
+/// \note CAN BE CHANGED: The parameter to \b osMailQ shall be consistent but the
+///       macro body is implementation specific in every CMSIS-RTOS.
+#define osMailQ(name) \
+&os_mailQ_def_##name
+ 
+/// Create and Initialize a Mail Queue object.
+/// \param[in]     queue_def     mail queue definition referenced with \ref osMailQ.
+/// \param[in]     thread_id     thread ID (obtained by \ref osThreadCreate or \ref osThreadGetId) or NULL.
+/// \return mail queue ID for reference by other functions or NULL in case of error.
+osMailQId osMailCreate (const osMailQDef_t *queue_def, osThreadId thread_id);
+ 
+/// Allocate a memory block for mail from a mail memory pool.
+/// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.
+/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out
+/// \return pointer to memory block that can be filled with mail or NULL in case of error.
+void *osMailAlloc (osMailQId queue_id, uint32_t millisec);
+ 
+/// Allocate a memory block for mail from a mail memory pool and set memory block to zero.
+/// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.
+/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out
+/// \return pointer to memory block that can be filled with mail or NULL in case of error.
+void *osMailCAlloc (osMailQId queue_id, uint32_t millisec);
+ 
+/// Put a Mail into a Queue.
+/// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.
+/// \param[in]     mail          pointer to memory with mail to put into a queue.
+/// \return status code that indicates the execution status of the function.
+osStatus osMailPut (osMailQId queue_id, const void *mail);
+ 
+/// Get a Mail from a Queue or timeout if Queue is empty.
+/// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.
+/// \param[in]     millisec      \ref CMSIS_RTOS_TimeOutValue or 0 in case of no time-out.
+/// \return event information that includes status code.
+osEvent osMailGet (osMailQId queue_id, uint32_t millisec);
+ 
+/// Free a memory block by returning it to a mail memory pool.
+/// \param[in]     queue_id      mail queue ID obtained with \ref osMailCreate.
+/// \param[in]     mail          pointer to memory block that was obtained with \ref osMailGet.
+/// \return status code that indicates the execution status of the function.
+osStatus osMailFree (osMailQId queue_id, void *mail);
+ 
+#endif  // Mail Queue available
+ 
+ 
+#ifdef  __cplusplus
+}
+#endif
+ 
+#endif  // CMSIS_OS_H_
diff --git a/RTOS2/Template/cmsis_os1.c b/RTOS2/Template/cmsis_os1.c
new file mode 100644
index 0000000..de1650c
--- /dev/null
+++ b/RTOS2/Template/cmsis_os1.c
@@ -0,0 +1,361 @@
+/*
+ * Copyright (c) 2013-2017 ARM Limited. All rights reserved.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * ----------------------------------------------------------------------
+ *
+ * $Date:        10. January 2017
+ * $Revision:    V1.2
+ *
+ * Project:      CMSIS-RTOS API V1
+ * Title:        cmsis_os_v1.c V1 module file
+ *---------------------------------------------------------------------------*/
+
+#include <string.h>
+#include "cmsis_os.h"
+
+#if (osCMSIS >= 0x20000U)
+
+
+// Thread
+osThreadId osThreadCreate (const osThreadDef_t *thread_def, void *argument) {
+
+  if (thread_def == NULL) {
+    return (osThreadId)NULL;
+  }
+  return osThreadNew((osThreadFunc_t)thread_def->pthread, argument, &thread_def->attr);
+}
+
+
+// Signals
+
+#define SignalMask ((1U<<osFeature_Signals)-1U)
+
+int32_t osSignalSet (osThreadId thread_id, int32_t signals) {
+  uint32_t flags;
+
+  flags = osThreadFlagsSet(thread_id, (uint32_t)signals);
+  if ((flags & 0x80000000U) != 0U) {
+    return ((int32_t)0x80000000U);
+  }
+  return ((int32_t)(flags & ~((uint32_t)signals)));
+}
+
+int32_t osSignalClear (osThreadId thread_id, int32_t signals) {
+  uint32_t flags;
+
+  if (thread_id != osThreadGetId()) {
+    return ((int32_t)0x80000000U);
+  }
+  flags = osThreadFlagsClear((uint32_t)signals);
+  if ((flags & 0x80000000U) != 0U) {
+    return ((int32_t)0x80000000U);
+  }
+  return ((int32_t)flags);
+}
+
+osEvent osSignalWait (int32_t signals, uint32_t millisec) {
+  osEvent  event;
+  uint32_t flags;
+
+  if (signals != 0) {
+    flags = osThreadFlagsWait((uint32_t)signals, osFlagsWaitAll, millisec);
+  } else {
+    flags = osThreadFlagsWait(SignalMask,        osFlagsWaitAny, millisec);
+  }
+  if ((flags > 0U) && (flags < 0x80000000U)) {
+    event.status = osEventSignal;
+    event.value.signals = (int32_t)flags;
+  } else {
+    switch ((int32_t)flags) {
+      case osErrorResource:
+        event.status = osOK;
+        break;
+      case osErrorTimeout:
+        event.status = osEventTimeout;
+        break;
+      case osErrorParameter:
+        event.status = osErrorValue;
+        break;
+      default:
+        event.status = (osStatus)flags;
+        break;
+    }
+  }
+  return event;
+}
+
+
+// Timer
+osTimerId osTimerCreate (const osTimerDef_t *timer_def, os_timer_type type, void *argument) {
+
+  if (timer_def == NULL) {
+    return (osTimerId)NULL;
+  }
+  return osTimerNew((osTimerFunc_t)timer_def->ptimer, type, argument, &timer_def->attr);
+}
+
+
+// Mutex
+osMutexId osMutexCreate (const osMutexDef_t *mutex_def) {
+
+  if (mutex_def == NULL) {
+    return (osMutexId)NULL;
+  }
+  return osMutexNew(mutex_def);
+}
+
+
+// Semaphore
+
+#if (defined (osFeature_Semaphore) && (osFeature_Semaphore != 0U))
+
+osSemaphoreId osSemaphoreCreate (const osSemaphoreDef_t *semaphore_def, int32_t count) {
+
+  if (semaphore_def == NULL) {
+    return (osSemaphoreId)NULL;
+  }
+  return osSemaphoreNew((uint32_t)count, (uint32_t)count, semaphore_def);
+}
+
+int32_t osSemaphoreWait (osSemaphoreId semaphore_id, uint32_t millisec) {
+  osStatus_t status;
+  uint32_t   count;
+
+  status = osSemaphoreAcquire(semaphore_id, millisec);
+  switch (status) {
+    case osOK:
+      count = osSemaphoreGetCount(semaphore_id);
+      return ((int32_t)count + 1);
+    case osErrorResource:
+    case osErrorTimeout:
+      return 0;
+    default:
+      break;
+  }
+  return -1;
+}
+
+#endif  // Semaphore
+
+
+// Memory Pool
+
+#if (defined(osFeature_Pool) && (osFeature_Pool != 0))
+
+osPoolId osPoolCreate (const osPoolDef_t *pool_def) {
+
+  if (pool_def == NULL) {
+    return (osPoolId)NULL;
+  }
+  return ((osPoolId)(osMemoryPoolNew(pool_def->pool_sz, pool_def->item_sz, &pool_def->attr)));
+}
+
+void *osPoolAlloc (osPoolId pool_id) {
+  return osMemoryPoolAlloc((osMemoryPoolId_t)pool_id, 0U);
+}
+
+void *osPoolCAlloc (osPoolId pool_id) {
+  void    *block;
+  uint32_t block_size;
+
+  block_size = osMemoryPoolGetBlockSize((osMemoryPoolId_t)pool_id);
+  if (block_size == 0U) {
+    return NULL;
+  }
+  block = osMemoryPoolAlloc((osMemoryPoolId_t)pool_id, 0U);
+  if (block != NULL) {
+    memset(block, 0, block_size);
+  }
+  return block;
+}
+
+osStatus osPoolFree (osPoolId pool_id, void *block) {
+  return osMemoryPoolFree((osMemoryPoolId_t)pool_id, block);
+}
+
+#endif  // Memory Pool
+
+
+// Message Queue
+
+#if (defined(osFeature_MessageQ) && (osFeature_MessageQ != 0))
+
+osMessageQId osMessageCreate (const osMessageQDef_t *queue_def, osThreadId thread_id) {
+  (void)thread_id;
+
+  if (queue_def == NULL) {
+    return (osMessageQId)NULL;
+  }
+  return ((osMessageQId)(osMessageQueueNew(queue_def->queue_sz, sizeof(uint32_t), &queue_def->attr)));
+}
+
+osStatus osMessagePut (osMessageQId queue_id, uint32_t info, uint32_t millisec) {
+  return osMessageQueuePut((osMessageQueueId_t)queue_id, &info, 0U, millisec);
+}
+
+osEvent osMessageGet (osMessageQId queue_id, uint32_t millisec) {
+  osStatus_t status;
+  osEvent    event;
+  uint32_t   message;
+
+  status = osMessageQueueGet((osMessageQueueId_t)queue_id, &message, NULL, millisec);
+  switch (status) {
+    case osOK:
+      event.status = osEventMessage;
+      event.value.v = message;
+      break;
+    case osErrorResource:
+      event.status = osOK;
+      break;
+    case osErrorTimeout:
+      event.status = osEventTimeout;
+      break;
+    default:
+      event.status = status;
+      break;
+  }
+  return event;
+}
+
+#endif  // Message Queue
+
+
+// Mail Queue
+
+#if (defined(osFeature_MailQ) && (osFeature_MailQ != 0))
+
+typedef struct os_mail_queue_s {
+  osMemoryPoolId_t   mp_id;
+  osMessageQueueId_t mq_id;
+} os_mail_queue_t;
+
+osMailQId osMailCreate (const osMailQDef_t *queue_def, osThreadId thread_id) {
+  os_mail_queue_t *ptr;
+  (void)thread_id;
+
+  if (queue_def == NULL) {
+    return (osMailQId)NULL;
+  }
+
+  ptr = queue_def->mail;
+  if (ptr == NULL) {
+    return (osMailQId)NULL;
+  }
+
+  ptr->mp_id = osMemoryPoolNew  (queue_def->queue_sz, queue_def->item_sz, &queue_def->mp_attr);
+  ptr->mq_id = osMessageQueueNew(queue_def->queue_sz, sizeof(void *), &queue_def->mq_attr);
+  if ((ptr->mp_id == (osMemoryPoolId_t)NULL) || (ptr->mq_id == (osMessageQueueId_t)NULL)) {
+    if (ptr->mp_id != (osMemoryPoolId_t)NULL) {
+      osMemoryPoolDelete(ptr->mp_id);
+    }
+    if (ptr->mq_id != (osMessageQueueId_t)NULL) {
+      osMessageQueueDelete(ptr->mq_id);
+    }
+    return (osMailQId)NULL;
+  }
+
+  return (osMailQId)ptr;
+}
+
+void *osMailAlloc (osMailQId queue_id, uint32_t millisec) {
+  os_mail_queue_t *ptr = (os_mail_queue_t *)queue_id;
+
+  if (ptr == NULL) {
+    return NULL;
+  }
+  return osMemoryPoolAlloc(ptr->mp_id, millisec);
+}
+
+void *osMailCAlloc (osMailQId queue_id, uint32_t millisec) {
+  os_mail_queue_t *ptr = (os_mail_queue_t *)queue_id;
+  void            *block;
+  uint32_t         block_size;
+
+  if (ptr == NULL) {
+    return NULL;
+  }
+  block_size = osMemoryPoolGetBlockSize(ptr->mp_id);
+  if (block_size == 0U) {
+    return NULL;
+  }
+  block = osMemoryPoolAlloc(ptr->mp_id, millisec);
+  if (block != NULL) {
+    memset(block, 0, block_size);
+  }
+
+  return block;
+
+}
+
+osStatus osMailPut (osMailQId queue_id, const void *mail) {
+  os_mail_queue_t *ptr = (os_mail_queue_t *)queue_id;
+
+  if (ptr == NULL) {
+    return osErrorParameter;
+  }
+  if (mail == NULL) {
+    return osErrorValue;
+  }
+  return osMessageQueuePut(ptr->mq_id, &mail, 0U, 0U);
+}
+
+osEvent osMailGet (osMailQId queue_id, uint32_t millisec) {
+  os_mail_queue_t *ptr = (os_mail_queue_t *)queue_id;
+  osStatus_t       status;
+  osEvent          event;
+  void            *mail;
+
+  if (ptr == NULL) {
+    event.status = osErrorParameter;
+    return event;
+  }
+
+  status = osMessageQueueGet(ptr->mq_id, &mail, NULL, millisec);
+  switch (status) {
+    case osOK:
+      event.status = osEventMail;
+      event.value.p = mail;
+      break;
+    case osErrorResource:
+      event.status = osOK;
+      break;
+    case osErrorTimeout:
+      event.status = osEventTimeout;
+      break;
+    default:
+      event.status = status;
+      break;
+  }
+  return event;
+}
+
+osStatus osMailFree (osMailQId queue_id, void *mail) {
+  os_mail_queue_t *ptr = (os_mail_queue_t *)queue_id;
+
+  if (ptr == NULL) {
+    return osErrorParameter;
+  }
+  if (mail == NULL) {
+    return osErrorValue;
+  }
+  return osMemoryPoolFree(ptr->mp_id, mail);
+}
+
+#endif  // Mail Queue
+
+
+#endif  // osCMSIS