RIOT/boards/msba2-common/lpc2387-timer3.c

/*
 * Copyright (C) 2014 INRIA
 *
 * This file is subject to the terms and conditions of the GNU Lesser
 * General Public License v2.1. See the file LICENSE in the top level
 * directory for more details.
 */

/**
 * @ingroup msba2
 * @{
 */

/**
 * @file
 * @brief       msba2 benchmark functions
 *
 * @author      Heiko Will <heiko.will@fu-berlin.de>
 * @author      Zakaria Kasmi <zkasmi@inf.fu-berlin.de>
 * @author      Kaspar Schleiser <kaspar@schleiser.de>
 *
 */

#include <stdint.h>
#include <stdio.h>
#include "lpc2387.h"

void  benchmark_init(void)
{
    PCLKSEL1 = (PCLKSEL1 & ~(BIT14|BIT15)) | (1 << 14); // CCLK to PCLK divider
    PCONP |= PCTIM3;
    T3TCR = 0;                                          // disable timer
    T3MCR = 0;                                          // disable interrupt
    T3CCR = 0;                                          // capture is disabled.
    T3EMR = 0;                                          // no external match output.
    T3PR = 0;                                           // set prescaler
    T3TC = 0;                                           // reset counter
}

void  benchmark_reset_start(void)
{
    T3TCR = 0;                                              // disable timer
    T3TC = 0;                                               // reset counter
    T3TCR = BIT0;
}

unsigned int  benchmark_read_stop(void)
{
    T3TCR = 0;                                              // disable timer
    return T3TC;
}