mirror of https://github.com/ARMmbed/mbed-os.git
120 lines
3.5 KiB
C++
120 lines
3.5 KiB
C++
/*
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* Copyright (c) 2013-2017, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "mbed.h"
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#include "greentea-client/test_env.h"
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#include "utest/utest.h"
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#include "unity/unity.h"
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#if defined(SKIP_TIME_DRIFT_TESTS) || defined(MBED_RTOS_SINGLE_THREAD) || !DEVICE_USTICKER
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#error [NOT_SUPPORTED] test not supported
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#else
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using utest::v1::Case;
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#if defined(__CORTEX_M23) || defined(__CORTEX_M33)
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#define TEST_STACK_SIZE 512
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#else
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#define TEST_STACK_SIZE 256
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#endif
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#define ONE_MILLI_SEC 1000
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volatile uint32_t elapsed_time_ms = 0;
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static const int test_timeout = 40;
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void update_tick_thread(Mutex *mutex)
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{
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while (true) {
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ThisThread::sleep_for(1);
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mutex->lock();
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++elapsed_time_ms;
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mutex->unlock();
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}
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}
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/** Tests is to measure the accuracy of ThisThread::sleep_for() over a period of time
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Given
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a thread updating elapsed_time_ms every milli sec
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and host script for time measurement accuracy check (More details on tests can be found in timing_drift_auto.py)
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When host query what is current count base_time
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Then Device responds by the elapsed_time_ms
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When host query what is current count final_time
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Then Device responds by the elapsed_time_ms
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When host computes the drift considering base_time, final_time, transport delay and measurement stretch
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Then host send the results back to device pass/fail based on tolerance
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*/
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void test(void)
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{
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char _key[11] = { };
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char _value[128] = { };
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int expected_key = 1;
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Mutex mutex;
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uint32_t elapsed_time;
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Thread tick_thread(osPriorityHigh, TEST_STACK_SIZE);
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tick_thread.start(callback(update_tick_thread, &mutex));
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greentea_send_kv("timing_drift_check_start", 0);
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// wait for 1st signal from host
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do {
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greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value));
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expected_key = strcmp(_key, "base_time");
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} while (expected_key);
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mutex.lock();
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elapsed_time = elapsed_time_ms;
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mutex.unlock();
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// send base_time
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greentea_send_kv(_key, elapsed_time * ONE_MILLI_SEC);
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// wait for 2nd signal from host
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greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value));
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mutex.lock();
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elapsed_time = elapsed_time_ms;
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mutex.unlock();
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// send final_time
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greentea_send_kv(_key, elapsed_time * ONE_MILLI_SEC);
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//get the results from host
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greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value));
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TEST_ASSERT_EQUAL_STRING_MESSAGE("pass", _key, "Host side script reported a fail...");
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}
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Case cases[] = {
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Case("Test ThisThread::sleep_for accuracy", test)
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};
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utest::v1::status_t greentea_test_setup(const size_t number_of_cases)
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{
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GREENTEA_SETUP(test_timeout, "timing_drift_auto");
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return utest::v1::greentea_test_setup_handler(number_of_cases);
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}
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utest::v1::Specification specification(greentea_test_setup, cases);
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int main()
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{
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utest::v1::Harness::run(specification);
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}
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#endif // defined(SKIP_TIME_DRIFT_TESTS) || defined(MBED_RTOS_SINGLE_THREAD) || !DEVICE_USTICKER
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