mbed-os/TESTS/mbed_drivers/wait_us/main.cpp

57 lines
1.6 KiB
C++

/*
* Copyright (c) 2013-2016, 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"
/**
NOTE: This test will have a bit of inherent drift due to it being
single-threaded, so having a drift that is non-zero should be ok. However,
it should still be well under the limit.
**/
using namespace utest::v1;
DigitalOut led(LED1);
volatile bool print_tick = false;
const int ONE_SECOND_US = 1000000;
const int total_ticks = 10;
void test_case_ticker() {
for (int i = 0; i <= total_ticks; i++) {
wait_us(ONE_SECOND_US);
greentea_send_kv("tick", i);
}
}
// Test cases
Case cases[] = {
Case("Timers: wait_us", test_case_ticker),
};
utest::v1::status_t greentea_test_setup(const size_t number_of_cases) {
GREENTEA_SETUP(total_ticks + 5, "timing_drift_auto");
return greentea_test_setup_handler(number_of_cases);
}
Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
int main() {
Harness::run(specification);
}