FreeRTOS/Demo/MSP430X_MSP430F5438_IAR/RunTimeStatsConfig.c

/*
    FreeRTOS V7.3.0 - Copyright (C) 2012 Real Time Engineers Ltd.

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    This file is part of the FreeRTOS distribution.

    FreeRTOS is free software; you can redistribute it and/or modify it under
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    Free Software Foundation AND MODIFIED BY the FreeRTOS exception.
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*/

/* FreeRTOS includes. */
#include "FreeRTOS.h"

/* Hardware includes. */
#include "msp430.h"
#include "hal_MSP-EXP430F5438.h"

/* This demo uses Timer A1 to generate the time base for gathering run time
statistics information.  Run time statistics show much processing time has
been allocated to each task since the application booted. */

/* The time base for the run time stats is generated by a 16 bit timer.  Each
time the timer overflows ulStatsOverflowCount is incremented.  Therefore,
when converting the total run time to a 32 bit number, the most significant two
bytes are given by ulStatsOverflowCount and the least significant two bytes are
given by the current timer counter value.  Care must be taken with data
consistency when combining the two in case a timer overflow occurs as the
value is being read. */
volatile unsigned long ulStatsOverflowCount = 0;

/*-----------------------------------------------------------*/

void vConfigureTimerForRunTimeStats( void )
{
	/* Ensure the timer is stopped. */
	TA1CTL = 0;

	/* Run the timer from the ACLK/2. */
	TA1CTL = TASSEL_1 | ID__2;

	/* Clear everything to start with. */
	TA1CTL |= TACLR;

	/* Enable the interrupts. */
	TA1CCTL0 = CCIE;

	/* Start up clean. */
	TA1CTL |= TACLR;

	/* Continuous mode. */
	TA1CTL |= MC__CONTINOUS;
}
/*-----------------------------------------------------------*/

#pragma vector=TIMER1_A0_VECTOR
static __interrupt void prvRunTimeStatsOverflowISR( void )
{
	ulStatsOverflowCount++;
}
/*-----------------------------------------------------------*/