Add the files from the MQTT project that were not check in.

FreeRTOS-Plus/Source/FreeRTOS-Plus-IoT-SDK/abstractions/platform/freertos/iot_clock_freertos.c

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+/*
+ * Amazon FreeRTOS Platform V1.0.0
+ * Copyright (C) 2019 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://aws.amazon.com/freertos
+ * http://www.FreeRTOS.org
+ */
+
+/**
+ * @file iot_clock_freertos.c
+ * @brief Implementation of the functions in iot_clock.h for Amazon FreeRTOS systems.
+ */
+
+/* The config header is always included first. */
+#include "iot_config.h"
+
+/* Standard includes. */
+#include <stdio.h>
+
+/* Platform clock include. */
+#include "platform/iot_platform_types_freertos.h"
+#include "platform/iot_clock.h"
+#include "task.h"
+
+/* Configure logs for the functions in this file. */
+#ifdef IOT_LOG_LEVEL_PLATFORM
+    #define LIBRARY_LOG_LEVEL        IOT_LOG_LEVEL_PLATFORM
+#else
+    #ifdef IOT_LOG_LEVEL_GLOBAL
+        #define LIBRARY_LOG_LEVEL    IOT_LOG_LEVEL_GLOBAL
+    #else
+        #define LIBRARY_LOG_LEVEL    IOT_LOG_NONE
+    #endif
+#endif
+
+#define LIBRARY_LOG_NAME    ( "CLOCK" )
+#include "iot_logging_setup.h"
+
+/*-----------------------------------------------------------*/
+
+/*
+ * Time conversion constants.
+ */
+#define _MILLISECONDS_PER_SECOND    ( 1000 )                                          /**< @brief Milliseconds per second. */
+#define _MILLISECONDS_PER_TICK      ( _MILLISECONDS_PER_SECOND / configTICK_RATE_HZ ) /**< Milliseconds per FreeRTOS tick. */
+
+/*-----------------------------------------------------------*/
+
+/*  Private Callback function for timer expiry, delegate work to a Task to free
+ *  up the timer task for managing other timers */
+static void prvTimerCallback( TimerHandle_t xTimerHandle )
+{
+    _IotSystemTimer_t * pxTimer = ( _IotSystemTimer_t * ) pvTimerGetTimerID( xTimerHandle );
+
+    /* The value of the timer ID, set in timer_create, should not be NULL. */
+    configASSERT( pxTimer != NULL );
+
+    /* Restart the timer if it is periodic. */
+    if( pxTimer->xTimerPeriod > 0 )
+    {
+        xTimerChangePeriod( xTimerHandle, pxTimer->xTimerPeriod, 0 );
+    }
+
+    /* Call timer Callback from this task */
+    pxTimer->threadRoutine( ( void * ) pxTimer->pArgument );
+}
+
+/*-----------------------------------------------------------*/
+
+bool IotClock_GetTimestring( char * pBuffer,
+                             size_t bufferSize,
+                             size_t * pTimestringLength )
+{
+    uint64_t milliSeconds = IotClock_GetTimeMs();
+    int timestringLength = 0;
+
+    configASSERT( pBuffer != NULL );
+    configASSERT( pTimestringLength != NULL );
+
+    /* Convert the localTime struct to a string. */
+    timestringLength = snprintf( pBuffer, bufferSize, "%llu", milliSeconds );
+
+    /* Check for error from no string */
+    if( timestringLength == 0 )
+    {
+        return false;
+    }
+
+    /* Set the output parameter. */
+    *pTimestringLength = timestringLength;
+
+    return true;
+}
+
+/*-----------------------------------------------------------*/
+
+uint64_t IotClock_GetTimeMs( void )
+{
+    TimeOut_t xCurrentTime = { 0 };
+
+    /* This must be unsigned because the behavior of signed integer overflow is undefined. */
+    uint64_t ullTickCount = 0ULL;
+
+    /* Get the current tick count and overflow count. vTaskSetTimeOutState()
+     * is used to get these values because they are both static in tasks.c. */
+    vTaskSetTimeOutState( &xCurrentTime );
+
+    /* Adjust the tick count for the number of times a TickType_t has overflowed. */
+    ullTickCount = ( uint64_t ) ( xCurrentTime.xOverflowCount ) << ( sizeof( TickType_t ) * 8 );
+
+    /* Add the current tick count. */
+    ullTickCount += xCurrentTime.xTimeOnEntering;
+
+    /* Return the ticks converted to Milliseconds */
+    return ullTickCount * _MILLISECONDS_PER_TICK;
+}
+/*-----------------------------------------------------------*/
+
+void IotClock_SleepMs( uint32_t sleepTimeMs )
+{
+    vTaskDelay( pdMS_TO_TICKS( sleepTimeMs ) );
+}
+
+/*-----------------------------------------------------------*/
+
+bool IotClock_TimerCreate( IotTimer_t * pNewTimer,
+                           IotThreadRoutine_t expirationRoutine,
+                           void * pArgument )
+{
+    _IotSystemTimer_t * pxTimer = ( _IotSystemTimer_t * ) pNewTimer;
+
+    configASSERT( pNewTimer != NULL );
+    configASSERT( expirationRoutine != NULL );
+
+    IotLogDebug( "Creating new timer %p.", pNewTimer );
+
+    /* Set the timer expiration routine, argument and period */
+    pxTimer->threadRoutine = expirationRoutine;
+    pxTimer->pArgument = pArgument;
+    pxTimer->xTimerPeriod = 0;
+
+    /* Create a new FreeRTOS timer. This call will not fail because the
+     * memory for it has already been allocated, so the output parameter is
+     * also set. */
+    pxTimer->timer = ( TimerHandle_t ) xTimerCreateStatic( "timer",                  /* Timer name. */
+                                                           portMAX_DELAY,            /* Initial timer period. Timers are created disarmed. */
+                                                           pdFALSE,                  /* Don't auto-reload timer. */
+                                                           ( void * ) pxTimer,       /* Timer id. */
+                                                           prvTimerCallback,         /* Timer expiration callback. */
+                                                           &pxTimer->xTimerBuffer ); /* Pre-allocated memory for timer. */
+
+    return true;
+}
+
+/*-----------------------------------------------------------*/
+
+void IotClock_TimerDestroy( IotTimer_t * pTimer )
+{
+    _IotSystemTimer_t * pTimerInfo = ( _IotSystemTimer_t * ) pTimer;
+
+    configASSERT( pTimerInfo != NULL );
+    configASSERT( pTimerInfo->timer != NULL );
+
+    IotLogDebug( "Destroying timer %p.", pTimer );
+
+    if( xTimerIsTimerActive( pTimerInfo->timer ) == pdTRUE )
+    {
+        /* Stop the FreeRTOS timer. Because the timer is statically allocated, no call
+         * to xTimerDelete is necessary. The timer is stopped so that it's not referenced
+         * anywhere. xTimerStop will not fail when it has unlimited block time. */
+        ( void ) xTimerStop( pTimerInfo->timer, portMAX_DELAY );
+
+        /* Wait until the timer stop command is processed. */
+        while( xTimerIsTimerActive( pTimerInfo->timer ) == pdTRUE )
+        {
+            vTaskDelay( 1 );
+        }
+    }
+}
+
+/*-----------------------------------------------------------*/
+
+bool IotClock_TimerArm( IotTimer_t * pTimer,
+                        uint32_t relativeTimeoutMs,
+                        uint32_t periodMs )
+{
+    _IotSystemTimer_t * pTimerInfo = ( _IotSystemTimer_t * ) pTimer;
+
+    configASSERT( pTimerInfo != NULL );
+
+    TimerHandle_t xTimerHandle = pTimerInfo->timer;
+
+    IotLogDebug( "Arming timer %p with timeout %llu and period %llu.",
+                 pTimer,
+                 relativeTimeoutMs,
+                 periodMs );
+
+    /* Set the timer period in ticks */
+    pTimerInfo->xTimerPeriod = pdMS_TO_TICKS( periodMs );
+
+    /* Set the timer to expire after relativeTimeoutMs, and restart it. */
+    ( void ) xTimerChangePeriod( xTimerHandle, pdMS_TO_TICKS( relativeTimeoutMs ), portMAX_DELAY );
+
+    return true;
+}
+
+/*-----------------------------------------------------------*/