2 FreeRTOS V6.1.0 - Copyright (C) 2010 Real Time Engineers Ltd.
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4 ***************************************************************************
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8 * + New to FreeRTOS, *
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9 * + Wanting to learn FreeRTOS or multitasking in general quickly *
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10 * + Looking for basic training, *
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11 * + Wanting to improve your FreeRTOS skills and productivity *
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13 * then take a look at the FreeRTOS books - available as PDF or paperback *
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15 * "Using the FreeRTOS Real Time Kernel - a Practical Guide" *
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16 * http://www.FreeRTOS.org/Documentation *
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18 * A pdf reference manual is also available. Both are usually delivered *
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19 * to your inbox within 20 minutes to two hours when purchased between 8am *
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20 * and 8pm GMT (although please allow up to 24 hours in case of *
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21 * exceptional circumstances). Thank you for your support! *
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23 ***************************************************************************
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25 This file is part of the FreeRTOS distribution.
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27 FreeRTOS is free software; you can redistribute it and/or modify it under
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28 the terms of the GNU General Public License (version 2) as published by the
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29 Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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30 ***NOTE*** The exception to the GPL is included to allow you to distribute
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31 a combined work that includes FreeRTOS without being obliged to provide the
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32 source code for proprietary components outside of the FreeRTOS kernel.
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33 FreeRTOS is distributed in the hope that it will be useful, but WITHOUT
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34 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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35 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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36 more details. You should have received a copy of the GNU General Public
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37 License and the FreeRTOS license exception along with FreeRTOS; if not it
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38 can be viewed here: http://www.freertos.org/a00114.html and also obtained
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39 by writing to Richard Barry, contact details for whom are available on the
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44 http://www.FreeRTOS.org - Documentation, latest information, license and
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47 http://www.SafeRTOS.com - A version that is certified for use in safety
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50 http://www.OpenRTOS.com - Commercial support, development, porting,
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51 licensing and training services.
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54 /* FreeRTOS includes. */
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55 #include "FreeRTOS.h"
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57 /* Hardware includes. */
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59 #include "hal_MSP-EXP430F5438.h"
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61 /* This demo uses Timer A1 to generate the time base for gathering run time
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62 statistics information. Run time statistics show much processing time has
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63 been allocated to each task since the application booted. */
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65 /* The time base for the run time stats is generated by a 16 bit timer. Each
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66 time the timer overflows ulStatsOverflowCount is incremented. Therefore,
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67 when converting the total run time to a 32 bit number, the most significant two
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68 bytes are given by ulStatsOverflowCount and the least significant two bytes are
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69 given by the current timer counter value. Care must be taken with data
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70 consistency when combining the two in case a timer overflow occurs as the
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71 value is being read. */
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72 volatile unsigned long ulStatsOverflowCount = 0;
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74 /*-----------------------------------------------------------*/
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76 void vConfigureTimerForRunTimeStats( void )
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78 /* Ensure the timer is stopped. */
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81 /* Run the timer from the ACLK/2. */
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82 TA1CTL = TASSEL_1 | ID__2;
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84 /* Clear everything to start with. */
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87 /* Enable the interrupts. */
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90 /* Start up clean. */
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93 /* No overflows can have occurred yet. */
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94 ulStatsOverflowCount = 0UL;
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96 /* Continuous mode. */
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97 TA1CTL |= MC__CONTINOUS;
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99 /*-----------------------------------------------------------*/
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101 #pragma vector=TIMER1_A0_VECTOR
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102 static __interrupt void prvRunTimeStatsOverflowISR( void )
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104 ulStatsOverflowCount++;
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106 /*-----------------------------------------------------------*/
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108 inline unsigned long ulGetRunTimeStatsTime( void )
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110 unsigned long ulReturn;
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112 TA1CTL &= ~MC__CONTINOUS;
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113 ulReturn = ( ulStatsOverflowCount << 16UL );
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114 ulReturn |= ( unsigned long ) TA1R;
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115 TA1CTL |= MC__CONTINOUS;
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119 /*-----------------------------------------------------------*/
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