nes-proj/examples/cc2538dk/timer-test.c

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/*
* Copyright (c) 2012, Texas Instruments Incorporated - http://www.ti.com/
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
*/
/**
* \addtogroup cc2538-examples
* @{
*
* \defgroup cc2538-timers cc2538dk Timer Test Project
*
* This example tests the correct functionality of clocks and timers.
*
* More specifically, it tests clock_seconds, rtimers, etimers and
* clock_delay_usec.
*
* This is largely-based on the same example of the cc2530 port.
* @{
*
* \file
* Tests related to clocks and timers
*/
#include "contiki.h"
#include "sys/clock.h"
#include "sys/rtimer.h"
#include "dev/leds.h"
#include <stdio.h>
/*---------------------------------------------------------------------------*/
#define TIMER_TEST_CONF_TEST_CLOCK_DELAY_USEC 1
#define TIMER_TEST_CONF_TEST_RTIMER 1
#define TIMER_TEST_CONF_TEST_ETIMER 1
#define TIMER_TEST_CONF_TEST_CLOCK_SECONDS 1
/*---------------------------------------------------------------------------*/
static struct etimer et;
#if TIMER_TEST_CONF_TEST_CLOCK_DELAY_USEC
static rtimer_clock_t start_count, end_count, diff;
#endif
#if TIMER_TEST_CONF_TEST_CLOCK_SECONDS
static unsigned long sec;
#endif
#if TIMER_TEST_CONF_TEST_ETIMER
static clock_time_t count;
#endif
#if TIMER_TEST_CONF_TEST_RTIMER
static struct rtimer rt;
rtimer_clock_t rt_now, rt_for;
static clock_time_t ct;
#endif
static uint8_t i;
/*---------------------------------------------------------------------------*/
PROCESS(timer_test_process, "Timer test process");
AUTOSTART_PROCESSES(&timer_test_process);
/*---------------------------------------------------------------------------*/
#if TIMER_TEST_CONF_TEST_RTIMER
void
rt_callback(struct rtimer *t, void *ptr)
{
rt_now = RTIMER_NOW();
ct = clock_time();
printf("Task called at %lu (clock = %lu)\n", rt_now, ct);
}
#endif
/*---------------------------------------------------------------------------*/
PROCESS_THREAD(timer_test_process, ev, data)
{
PROCESS_BEGIN();
etimer_set(&et, 2 * CLOCK_SECOND);
PROCESS_YIELD();
#if TIMER_TEST_CONF_TEST_CLOCK_DELAY_USEC
printf("-----------------------------------------\n");
printf("clock_delay_usec test, (10,000 x i) usec:\n");
printf("N.B. clock_delay_usec is more accurate than rtimers\n");
i = 1;
while(i < 7) {
start_count = RTIMER_NOW();
clock_delay_usec(10000 * i);
end_count = RTIMER_NOW();
diff = end_count - start_count;
printf("Requested: %u usec, Real: %lu rtimer ticks = ~%lu us\n",
10000 * i, diff, diff * 1000000 / RTIMER_SECOND);
i++;
}
#endif
#if TIMER_TEST_CONF_TEST_RTIMER
printf("-----------------------------------------\n");
printf("Rtimer Test, 1 sec (%u rtimer ticks):\n", RTIMER_SECOND);
i = 0;
while(i < 5) {
etimer_set(&et, 2 * CLOCK_SECOND);
printf("=======================\n");
ct = clock_time();
rt_now = RTIMER_NOW();
rt_for = rt_now + RTIMER_SECOND;
printf("Now=%lu (clock = %lu) - For=%lu\n", rt_now, ct, rt_for);
if(rtimer_set(&rt, rt_for, 1, rt_callback, NULL) != RTIMER_OK) {
printf("Error setting\n");
}
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
i++;
}
#endif
#if TIMER_TEST_CONF_TEST_ETIMER
printf("-----------------------------------------\n");
printf("Clock tick and etimer test, 1 sec (%u clock ticks):\n",
CLOCK_SECOND);
i = 0;
while(i < 10) {
etimer_set(&et, CLOCK_SECOND);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
etimer_reset(&et);
count = clock_time();
printf("%lu ticks\n", count);
leds_toggle(LEDS_RED);
i++;
}
#endif
#if TIMER_TEST_CONF_TEST_CLOCK_SECONDS
printf("-----------------------------------------\n");
printf("Clock seconds test (5s):\n");
i = 0;
while(i < 10) {
etimer_set(&et, 5 * CLOCK_SECOND);
PROCESS_WAIT_EVENT_UNTIL(etimer_expired(&et));
etimer_reset(&et);
sec = clock_seconds();
printf("%lu seconds\n", sec);
leds_toggle(LEDS_GREEN);
i++;
}
#endif
printf("Done!\n");
PROCESS_END();
}
/*---------------------------------------------------------------------------*/
/**
* @}
* @}
*/