Diff: timer1.cpp

Revision:

0:98fcd1266df0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/timer1.cpp	Thu Nov 14 14:36:52 2019 +0000
@@ -0,0 +1,116 @@
+/******************************************************************************
+  * @attention
+  *
+  * <h2><center>&copy; COPYRIGHT 2016 STMicroelectronics</center></h2>
+  *
+  * Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (the "License");
+  * You may not use this file except in compliance with the License.
+  * You may obtain a copy of the License at:
+  *
+  *        http://www.st.com/myliberty
+  *
+  * 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,
+  * AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
+  * FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
+  * See the License for the specific language governing permissions and
+  * limitations under the License.
+  *
+******************************************************************************/
+/*
+ *      PROJECT:   ST25R391x firmware
+ *      $Revision: $
+ *      LANGUAGE:  ANSI C
+ */
+
+/*! \file timer.c
+ *
+ *  \brief SW Timer implementation
+ *
+ *  \author Gustavo Patricio
+ *
+ *   This module makes use of a System Tick in millisconds and provides
+ *   an abstraction for SW timers
+ *
+ */
+
+/*
+******************************************************************************
+* INCLUDES
+******************************************************************************
+*/
+#include "timer1.h"
+
+
+/*
+******************************************************************************
+* LOCAL DEFINES
+******************************************************************************
+*/
+
+/*
+******************************************************************************
+* LOCAL VARIABLES
+******************************************************************************
+*/
+
+static uint32_t timerStopwatchTick;
+
+/*
+******************************************************************************
+* GLOBAL FUNCTIONS
+******************************************************************************
+*/
+
+
+/*******************************************************************************/
+uint32_t timerCalculateTimer( uint16_t time )
+{  
+  return (platformGetSysTick() + time);
+}
+
+
+/*******************************************************************************/
+bool timerIsExpired( uint32_t timer )
+{
+  uint32_t uDiff;
+  int32_t sDiff;
+  
+  uDiff = (timer - platformGetSysTick());   /* Calculate the diff between the timers */
+  sDiff = uDiff;                            /* Convert the diff to a signed var      */
+  
+  /* Check if the given timer has expired already */
+  if( sDiff < 0 )
+  {
+    return true;
+  }
+  
+  return false;
+}
+
+
+/*******************************************************************************/
+void timerDelay( uint16_t tOut )
+{
+  uint32_t t;
+  
+  /* Calculate the timer and wait blocking until is running */
+  t = timerCalculateTimer( tOut );
+  while( timerIsRunning(t) );
+}
+
+
+/*******************************************************************************/
+void timerStopwatchStart( void )
+{
+  timerStopwatchTick = platformGetSysTick();
+}
+
+
+/*******************************************************************************/
+uint32_t timerStopwatchMeasure( void )
+{
+  return (uint32_t)(platformGetSysTick() - timerStopwatchTick);
+}
+