Merge pull request #4062 from kaspar030/xtimer/test_xtimer_hang

tests: add xtimer_hang

tests/xtimer_hang/Makefile

+APPLICATION = xtimer_hang
+include ../Makefile.tests_common
+
+FEATURES_REQUIRED += periph_timer
+USEMODULE += xtimer
+
+include $(RIOTBASE)/Makefile.include

tests/xtimer_hang/main.c

+/*
+ * Copyright (C) 2015 Daniel Krebs <github@daniel-krebs.net>
+ *               2015 Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * 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     tests
+ * @{
+ *
+ * @file
+ * @brief       xtimer test application
+ *
+ * This test used to hang many boards.
+ *
+ * @author      Daniel Krebs <github@daniel-krebs.net>
+ * @author      Kaspar Schleiser <kaspar@schleiser.de>
+ *
+ * @}
+ */
+#include <stdio.h>
+
+#include "xtimer.h"
+#include "thread.h"
+
+#define TEST_SECONDS        (10U)
+#define TEST_TIME           (TEST_SECONDS * SEC_IN_USEC)
+#define STACKSIZE_TIMER     (1024)
+
+char stack_timer1[STACKSIZE_TIMER];
+char stack_timer2[STACKSIZE_TIMER];
+
+long unsigned int count = 0;
+
+void* timer_func1(void* arg)
+{
+    (void)arg;
+    while(1)
+    {
+        xtimer_usleep(1000);
+    }
+}
+
+void* timer_func2(void* arg)
+{
+    (void)arg;
+    while(1)
+    {
+        xtimer_usleep(1100);
+    }
+}
+
+int main(void)
+{
+
+    puts("xTimer hang test\n");
+
+    printf("This test will print \"Testing... (<percentage>)\" every 100ms for %u seconds.\n", TEST_SECONDS);
+    printf("If it stops before, the test failed.\n\n");
+
+    thread_create(stack_timer1,
+                  STACKSIZE_TIMER,
+                  2,
+                  CREATE_STACKTEST,
+                  timer_func1,
+                  NULL,
+                  "timer1");
+
+    thread_create(stack_timer2,
+                  STACKSIZE_TIMER,
+                  3,
+                  CREATE_STACKTEST,
+                  timer_func2,
+                  NULL,
+                  "timer2");
+
+    uint32_t end = xtimer_now() + TEST_TIME;
+    while(xtimer_now() < end)
+    {
+        count++;
+        xtimer_usleep(100U * 1000);
+        printf("Testing... (%lu%%)\n", count);
+    }
+
+    printf("Test successful.\n");
+
+    return 0;
+}