Diff: TESTS/mbed_drivers/wait_us/main.cpp

Revision:

0:6c56fb4bc5f0

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TESTS/mbed_drivers/wait_us/main.cpp	Fri Nov 04 20:27:58 2016 +0000
@@ -0,0 +1,56 @@
+/*
+ * 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);
+}