New Platform: TI CC2538 Development Kit

This commit adds cpu, platform and example files,
providing support for running Contiki on TI's cc2538 DK

examples/cc2538dk/timer-test.c

@@ -0,0 +1,183 @@
+/*
+ * 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();
+}
+/*---------------------------------------------------------------------------*/
+/**
+ * @}
+ * @}
+ */