Diff: TESTS/mbed_drivers/lp_timeout/main.cpp

Revision:

0:f269e3021894

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/TESTS/mbed_drivers/lp_timeout/main.cpp	Sun Oct 23 15:10:02 2016 +0000
@@ -0,0 +1,146 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2016 ARM Limited
+ *
+ * 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.
+ */
+
+#if !DEVICE_LOWPOWERTIMER
+    #error [NOT_SUPPORTED] Low power timer not supported for this target
+#endif
+
+#include "utest/utest.h"
+#include "unity/unity.h"
+#include "greentea-client/test_env.h"
+
+#include "mbed.h"
+#include "us_ticker_api.h"
+
+using namespace utest::v1;
+
+volatile static bool complete;
+static LowPowerTimeout lpt;
+
+/* Timeouts are quite arbitrary due to large number of boards with varying level of accuracy */
+#define LONG_TIMEOUT (100000)
+#define SHORT_TIMEOUT (600)
+
+void cb_done() {
+    complete = true;
+}
+
+#if DEVICE_SLEEP
+void lp_timeout_1s_deepsleep(void)
+{
+    complete = false;
+
+    /*
+     * Since deepsleep() may shut down the UART peripheral, we wait for 10ms
+     * to allow for hardware serial buffers to completely flush.
+
+     * 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 wait_ms() function for now.
+     */
+    wait_ms(10);
+
+    /*
+     * We use here lp_ticker_read() instead of us_ticker_read() for start and
+     * end because the microseconds timer might be disable during deepsleep.
+     */
+    timestamp_t start = lp_ticker_read();
+    lpt.attach(&cb_done, 1);
+    deepsleep();
+    while (!complete);
+    timestamp_t end = lp_ticker_read();
+
+    /* It takes longer to wake up from deep sleep */
+    TEST_ASSERT_UINT32_WITHIN(LONG_TIMEOUT, 1000000, end - start);
+    TEST_ASSERT_TRUE(complete);
+}
+
+void lp_timeout_1s_sleep(void)
+{
+    complete = false;
+
+    timestamp_t start = us_ticker_read();
+    lpt.attach(&cb_done, 1);
+    sleep();
+    while (!complete);
+    timestamp_t end = us_ticker_read();
+
+    TEST_ASSERT_UINT32_WITHIN(LONG_TIMEOUT, 1000000, end - start);
+    TEST_ASSERT_TRUE(complete);
+}
+#endif /* DEVICE_SLEEP */
+
+void lp_timeout_us(uint32_t delay_us, uint32_t tolerance)
+{
+    complete = false;
+
+    timestamp_t start = us_ticker_read();
+    lpt.attach_us(&cb_done, delay_us);
+    while (!complete);
+    timestamp_t end = us_ticker_read();
+
+    /* Using RTC which is less accurate */
+    TEST_ASSERT_UINT32_WITHIN(tolerance, delay_us, end - start);
+    TEST_ASSERT_TRUE(complete);
+}
+
+void lp_timeout_5s(void)
+{
+    lp_timeout_us(5000000, LONG_TIMEOUT);
+}
+
+void lp_timeout_1s(void)
+{
+    lp_timeout_us(1000000, LONG_TIMEOUT);
+}
+
+void lp_timeout_1ms(void)
+{
+    lp_timeout_us(1000, SHORT_TIMEOUT);
+}
+
+void lp_timeout_500us(void)
+{
+    lp_timeout_us(500, SHORT_TIMEOUT);
+
+}
+
+status_t greentea_failure_handler(const Case *const source, const failure_t reason) {
+    greentea_case_failure_abort_handler(source, reason);
+    return STATUS_CONTINUE;
+}
+
+Case cases[] = {
+    Case("500us LowPowerTimeout", lp_timeout_500us, greentea_failure_handler),
+    Case("1ms LowPowerTimeout", lp_timeout_1ms, greentea_failure_handler),
+    Case("1sec LowPowerTimeout", lp_timeout_1s, greentea_failure_handler),
+    Case("5sec LowPowerTimeout", lp_timeout_5s, greentea_failure_handler),
+#if DEVICE_SLEEP
+    Case("1sec LowPowerTimeout from sleep", lp_timeout_1s_sleep, greentea_failure_handler),
+    Case("1sec LowPowerTimeout from deepsleep", lp_timeout_1s_deepsleep, greentea_failure_handler),
+#endif /* DEVICE_SLEEP */
+};
+
+status_t greentea_test_setup(const size_t number_of_cases) {
+    GREENTEA_SETUP(20, "default_auto");
+    return greentea_test_setup_handler(number_of_cases);
+}
+
+Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
+
+int main() {
+    Harness::run(specification);
+}