/* mbed Microcontroller Library * Copyright (c) 2017 ARM Limited * 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. */ #ifndef MBED_TIMEOUT_TESTS_H #define MBED_TIMEOUT_TESTS_H #include "mbed.h" #include "unity/unity.h" #define NUM_TIMEOUTS 16 #define DRIFT_TEST_PERIOD_US 10000 const float TEST_DELAY_S = 0.01; const uint32_t TEST_DELAY_MS = 1000.0F * TEST_DELAY_S; const us_timestamp_t TEST_DELAY_US = 1000000.0F * TEST_DELAY_S; /* Timeouts are quite arbitrary due to large number of boards with varying level of accuracy */ #define LONG_DELTA_US (100000) #define SHORT_DELTA_US (2000) void sem_callback(Semaphore *sem) { sem->release(); } void cnt_callback(volatile uint32_t *cnt) { (*cnt)++; } template<typename TimeoutType> class AttachTester: public TimeoutType { public: void attach_callback(Callback<void()> func, us_timestamp_t delay_us) { TimeoutType::attach(func, (float) delay_us / 1000000.0f); } }; template<typename TimeoutType> class AttachUSTester: public TimeoutType { public: void attach_callback(Callback<void()> func, us_timestamp_t delay_us) { TimeoutType::attach_us(func, delay_us); } }; /** Template for tests: callback called once * * Test callback called once * Given a Timeout object with a callback attached with @a attach() * When given time elapses * Then the callback is called exactly one time * * Test callback called once * Given a Timeout object with a callback attached with @a attach_us() * When given time elapses * Then the callback is called exactly one time */ template<typename T> void test_single_call(void) { Semaphore sem(0, 1); T timeout; timeout.attach_callback(mbed::callback(sem_callback, &sem), TEST_DELAY_US); bool acquired = sem.try_acquire(); TEST_ASSERT_FALSE(acquired); acquired = sem.try_acquire_for(TEST_DELAY_MS + 2); TEST_ASSERT_TRUE(acquired); acquired = sem.try_acquire_for(TEST_DELAY_MS + 2); TEST_ASSERT_FALSE(acquired); timeout.detach(); } /** Template for tests: callback not called when cancelled * * Test callback not called when cancelled * Given a Timeout object with a callback attached with @a attach() * When the callback is detached before being called * Then the callback is never called * * Test callback not called when cancelled * Given a Timeout object with a callback attached with @a attach_us() * When the callback is detached before being called * Then the callback is never called */ template<typename T> void test_cancel(void) { Semaphore sem(0, 1); T timeout; timeout.attach_callback(mbed::callback(sem_callback, &sem), 2.0f * TEST_DELAY_US); bool acquired = sem.try_acquire_for(TEST_DELAY_MS); TEST_ASSERT_FALSE(acquired); timeout.detach(); acquired = sem.try_acquire_for(TEST_DELAY_MS + 2); TEST_ASSERT_FALSE(acquired); } /** Template for tests: callback override * * Test callback override * Given a Timeout object with a callback attached with @a attach() * When another callback is attached before first one is called * and second callback's delay elapses * Then the second callback is called * and the first callback is never called * * Test callback override * Given a Timeout object with a callback attached with @a attach_us() * When another callback is attached before first one is called * and second callback's delay elapses * Then the second callback is called * and the first callback is never called */ template<typename T> void test_override(void) { Semaphore sem1(0, 1); Semaphore sem2(0, 1); T timeout; timeout.attach_callback(mbed::callback(sem_callback, &sem1), 2.0f * TEST_DELAY_US); bool acquired = sem1.try_acquire_for(TEST_DELAY_MS); TEST_ASSERT_FALSE(acquired); timeout.attach_callback(mbed::callback(sem_callback, &sem2), 2.0f * TEST_DELAY_US); acquired = sem2.try_acquire_for(2 * TEST_DELAY_MS + 2); TEST_ASSERT_TRUE(acquired); acquired = sem1.try_acquire(); TEST_ASSERT_FALSE(acquired); timeout.detach(); } /** Template for tests: multiple Timeouts * * Test multiple Timeouts * Given multiple separate Timeout objects * When a callback is attached to all of these Timeout objects with @a attach() * and delay for every Timeout elapses * Then all callbacks are called * * Test multiple Timeouts * Given multiple separate Timeout objects * When a callback is attached to all of these Timeout objects with @a attach_us() * and delay for every Timeout elapses * Then all callbacks are called */ template<typename T> void test_multiple(void) { volatile uint32_t callback_count = 0; T timeouts[NUM_TIMEOUTS]; for (size_t i = 0; i < NUM_TIMEOUTS; i++) { timeouts[i].attach_callback(mbed::callback(cnt_callback, &callback_count), TEST_DELAY_US); } ThisThread::sleep_for(TEST_DELAY_MS + 2); TEST_ASSERT_EQUAL(NUM_TIMEOUTS, callback_count); } /** Template for tests: zero delay * * Test zero delay * Given a Timeout object * When a callback is attached with 0.0 s delay, with @a attach() * Then the callback is called instantly * * Test zero delay * Given a Timeout object * When a callback is attached with 0.0 s delay, with @a attach_us() * Then the callback is called instantly */ template<typename T> void test_no_wait(void) { for (int i = 0; i < 100; i++) { Semaphore sem(0, 1); T timeout; timeout.attach_callback(mbed::callback(sem_callback, &sem), 0ULL); int32_t sem_slots = sem.wait(0); TEST_ASSERT_EQUAL(1, sem_slots); timeout.detach(); } } /** Template for tests: accuracy of timeout delay * * Test delay accuracy * Given a Timeout object with a callback attached with @a attach() * When the callback is called * Then elapsed time matches given delay * * Test delay accuracy * Given a Timeout object with a callback attached with @a attach_us() * When the callback is called * Then elapsed time matches given delay */ template<typename T, us_timestamp_t delay_us, us_timestamp_t delta_us> void test_delay_accuracy(void) { Semaphore sem(0, 1); T timeout; Timer timer; timer.start(); timeout.attach_callback(mbed::callback(sem_callback, &sem), delay_us); sem.acquire(); timer.stop(); TEST_ASSERT_UINT64_WITHIN(delta_us, delay_us, timer.read_high_resolution_us()); timeout.detach(); } #if DEVICE_SLEEP /** Template for tests: timeout during sleep * * Test timeout during sleep * Given a Timeout object with a callback attached with @a attach() * and the uC in a sleep mode * When given delay elapses * Then the callback is called * and elapsed time matches given delay * * Test timeout during sleep * Given a Timeout object with a callback attached with @a attach_us() * and the uC in a sleep mode * When given delay elapses * Then the callback is called * and elapsed time matches given delay */ template<typename T, us_timestamp_t delay_us, us_timestamp_t delta_us> void test_sleep(void) { Semaphore sem(0, 1); T timeout; Timer timer; sleep_manager_lock_deep_sleep(); timer.start(); timeout.attach_callback(mbed::callback(sem_callback, &sem), delay_us); bool deep_sleep_allowed = sleep_manager_can_deep_sleep_test_check(); TEST_ASSERT_FALSE_MESSAGE(deep_sleep_allowed, "Deep sleep should be disallowed"); sem.acquire(); timer.stop(); sleep_manager_unlock_deep_sleep(); TEST_ASSERT_UINT64_WITHIN(delta_us, delay_us, timer.read_high_resolution_us()); timeout.detach(); } #if DEVICE_LPTICKER /** Template for tests: timeout during deepsleep * * Test timeout during deepsleep * Given a LowPowerTimeout object with a callback attached with @a attach() * and the uC in a deepsleep mode * When given delay elapses * Then the callback is called * and elapsed time matches given delay * * Test timeout during deepsleep * Given a LowPowerTimeout object with a callback attached with @a attach_us() * and the uC in a deepsleep mode * When given delay elapses * Then the callback is called * and elapsed time matches given delay */ template<typename T, us_timestamp_t delay_us, us_timestamp_t delta_us> void test_deepsleep(void) { Semaphore sem(0, 1); T timeout; /* * We use here the low power timer instead of microsecond timer for start and * end because the microseconds timer might be disabled during deepsleep. */ LowPowerTimer timer; /* * Since deepsleep() may shut down the UART peripheral, we wait for 20ms * to allow for hardware serial buffers to completely flush. * * Take NUMAKER_PFM_NUC472 as an example: * Its UART peripheral has 16-byte Tx FIFO. With baud rate set to 9600, flush * Tx FIFO would take: 16 * 8 * 1000 / 9600 = 13.3 (ms). So set wait time to * 20ms here for safe. * This should be replaced with a better function that checks if the * hardware buffers are empty. However, such an API does not exist now, * so we'll use the ThisThread::sleep_for() function for now. */ ThisThread::sleep_for(20); timer.start(); timeout.attach_callback(mbed::callback(sem_callback, &sem), delay_us); bool deep_sleep_allowed = sleep_manager_can_deep_sleep_test_check(); TEST_ASSERT_TRUE_MESSAGE(deep_sleep_allowed, "Deep sleep should be allowed"); sem.acquire(); timer.stop(); TEST_ASSERT_UINT64_WITHIN(delta_us, delay_us, timer.read_high_resolution_us()); timeout.detach(); } #endif #endif template<typename TimeoutTesterType> class TimeoutDriftTester { public: TimeoutDriftTester(us_timestamp_t period = 1000) : _callback_count(0), _period(period), _timeout() { } void reschedule_callback(void) { _timeout.attach_callback(mbed::callback(this, &TimeoutDriftTester::reschedule_callback), _period); _callback_count++; } void detach_callback(void) { _timeout.detach(); } uint32_t get_callback_count(void) { return _callback_count; } private: volatile uint32_t _callback_count; us_timestamp_t _period; TimeoutTesterType _timeout; }; /** Template for tests: accuracy of timeout delay scheduled repeatedly * * Test time drift -- device part * Given a Timeout object with a callback repeatedly attached with @a attach() * When the testing host computes test duration based on values received from uC * Then computed time and actual time measured by host are equal within given tolerance * * Test time drift -- device part * Given a Timeout object with a callback repeatedly attached with @a attach_us() * When the testing host computes test duration based on values received from uC * Then computed time and actual time measured by host are equal within given tolerance * * Original description: * 1) DUT would start to update callback_trigger_count every milli sec * 2) Host would query what is current count base_time, Device responds by the callback_trigger_count * 3) Host after waiting for measurement stretch. It will query for device time again final_time. * 4) Host computes the drift considering base_time, final_time, transport delay and measurement stretch * 5) Finally host send the results back to device pass/fail based on tolerance. * 6) More details on tests can be found in timing_drift_auto.py */ template<typename T> void test_drift(void) { char _key[11] = { }; char _value[128] = { }; int expected_key = 1; TimeoutDriftTester<T> timeout(DRIFT_TEST_PERIOD_US); greentea_send_kv("timing_drift_check_start", 0); timeout.reschedule_callback(); // 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); greentea_send_kv(_key, timeout.get_callback_count() * DRIFT_TEST_PERIOD_US); // wait for 2nd signal from host greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value)); greentea_send_kv(_key, timeout.get_callback_count() * DRIFT_TEST_PERIOD_US); timeout.detach_callback(); //get the results from host greentea_parse_kv(_key, _value, sizeof(_key), sizeof(_value)); TEST_ASSERT_EQUAL_STRING_MESSAGE("pass", _key, "Host script reported a failure"); } #endif