Diff: mbed-os/TESTS/mbedmicro-rtos-mbed/basic/main.cpp

Revision:

0:9fca2b23d0ba

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-os/TESTS/mbedmicro-rtos-mbed/basic/main.cpp	Sat Feb 23 12:13:36 2019 +0000
@@ -0,0 +1,113 @@
+/*
+ * Copyright (c) 2013-2017, ARM Limited, All Rights Reserved
+ * SPDX-License-Identifier: Apache-2.0
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License"); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "mbed.h"
+#include "greentea-client/test_env.h"
+#include "utest/utest.h"
+#include "unity/unity.h"
+
+#if defined(MBED_RTOS_SINGLE_THREAD)
+#error [NOT_SUPPORTED] test not supported
+#endif
+
+using utest::v1::Case;
+
+#define TEST_STACK_SIZE 256
+#define ONE_MILLI_SEC 1000
+
+volatile uint32_t elapsed_time_ms = 0;
+static const int test_timeout = 40;
+
+
+void update_tick_thread(Mutex *mutex)
+{
+    while (true) {
+        Thread::wait(1);
+        mutex->lock();
+        ++elapsed_time_ms;
+        mutex->unlock();
+    }
+}
+
+
+/** Tests is to measure the accuracy of Thread::wait() over a period of time
+
+    Given
+        a thread updating elapsed_time_ms every milli sec
+        and host script for time measurement accuracy check (More details on tests can be found in timing_drift_auto.py)
+    When host query what is current count base_time
+    Then Device responds by the elapsed_time_ms
+    When host query what is current count final_time
+    Then Device responds by the elapsed_time_ms
+    When host computes the drift considering base_time, final_time, transport delay and measurement stretch
+    Then host send the results back to device pass/fail based on tolerance
+ */
+void test(void)
+{
+    char _key[11] = { };
+    char _value[128] = { };
+    int expected_key = 1;
+    Mutex mutex;
+    uint32_t elapsed_time;
+
+    Thread tick_thread(osPriorityHigh, TEST_STACK_SIZE);
+    tick_thread.start(callback(update_tick_thread, &mutex));
+
+    greentea_send_kv("timing_drift_check_start", 0);
+
+    // wait for 1st signal from host
+    do {
+        greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value));
+        expected_key = strcmp(_key, "base_time");
+    } while (expected_key);
+
+    mutex.lock();
+    elapsed_time = elapsed_time_ms;
+    mutex.unlock();
+    // send base_time
+    greentea_send_kv(_key, elapsed_time * ONE_MILLI_SEC);
+
+    // wait for 2nd signal from host
+    greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value));
+
+    mutex.lock();
+    elapsed_time = elapsed_time_ms;
+    mutex.unlock();
+    // send final_time
+    greentea_send_kv(_key, elapsed_time * ONE_MILLI_SEC);
+
+    //get the results from host
+    greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value));
+
+    TEST_ASSERT_EQUAL_STRING_MESSAGE("pass", _key,"Host side script reported a fail...");
+}
+
+Case cases[] = {
+    Case("Test Thread::wait accuracy", test)
+};
+
+utest::v1::status_t greentea_test_setup(const size_t number_of_cases)
+{
+    GREENTEA_SETUP(test_timeout, "timing_drift_auto");
+    return utest::v1::greentea_test_setup_handler(number_of_cases);
+}
+
+utest::v1::Specification specification(greentea_test_setup, cases);
+
+int main()
+{
+    utest::v1::Harness::run(specification);
+}