mirror of https://github.com/ARMmbed/mbed-os.git
63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/*
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* Copyright (c) 2013-2016, 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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using namespace utest::v1;
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DigitalOut led(LED1);
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Timer timer;
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volatile bool print_tick = false;
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const int ONE_SECOND_US = 1000000;
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const int total_ticks = 10;
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void test_case_ticker() {
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int start_time;
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int after_print_us;
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int wait_time_us = ONE_SECOND_US;
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timer.start();
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start_time = timer.read();
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int i = 0;
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while (i <= total_ticks) {
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wait_us(wait_time_us);
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greentea_send_kv("tick", i);
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after_print_us = timer.read();
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// This won't be 100% exact, but it should be very close
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wait_time_us = after_print_us - start_time - ((++i) * ONE_SECOND_US);
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}
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timer.stop();
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}
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// Test cases
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Case cases[] = {
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Case("Timers: wait_us", test_case_ticker),
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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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GREENTEA_SETUP(total_ticks + 5, "timing_drift_auto");
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return greentea_test_setup_handler(number_of_cases);
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}
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Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
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int main() {
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Harness::run(specification);
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}
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