Add tests for ticker HAL API.

TESTS/events/queue/main.cpp

@@ -20,6 +20,10 @@
 #include "unity.h"
 #include "utest.h"
 
+#if !DEVICE_USTICKER
+  #error [NOT_SUPPORTED] test not supported
+#endif
+
 using namespace utest::v1;
 
 // TEST_EQUEUE_SIZE was reduced below 1024B to fit this test to devices with small RAM (RAM <= 16kB)

TESTS/events/timing/main.cpp

@@ -24,6 +24,9 @@
 
 using namespace utest::v1;
 
+#if !DEVICE_USTICKER
+  #error [NOT_SUPPORTED] test not supported
+#endif
 
 // Test delay
 #ifndef TEST_EVENTS_TIMING_TIME

TESTS/mbed_drivers/race_test/main.cpp

@@ -26,6 +26,10 @@
   #error [NOT_SUPPORTED] test not supported for single threaded enviroment
 #endif
 
+#if !DEVICE_USTICKER
+#error [NOT_SUPPORTED] test not supported
+#endif
+
 using namespace utest::v1;
 
 #define TEST_STACK_SIZE     512

TESTS/mbed_drivers/ticker/main.cpp

@@ -18,6 +18,9 @@
 #include "utest/utest.h"
 #include "unity/unity.h"
 
+#if !DEVICE_USTICKER
+#error [NOT_SUPPORTED] test not supported
+#endif
 
 using utest::v1::Case;
 

TESTS/mbed_drivers/timer/main.cpp

@@ -22,6 +22,10 @@
 #include "rtos.h"
 #include "hal/us_ticker_api.h"
 
+#if !DEVICE_USTICKER
+  #error [NOT_SUPPORTED] test not supported
+#endif
+
 using namespace utest::v1;
 
 extern uint32_t SystemCoreClock;

TESTS/mbed_hal/lp_ticker/lp_ticker_api_tests.h

@@ -0,0 +1,56 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2017-2017 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.
+ */
+
+/** \addtogroup hal_lp_ticker_tests
+ *  @{
+ */
+
+#ifndef LP_TICKER_API_TESTS_H
+#define LP_TICKER_API_TESTS_H
+
+#include "device.h"
+
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/** Test that the ticker has the correct frequency and number of bits.
+ *
+ * Given ticker is available.
+ * When ticker information data is obtained.
+ * Then collected data indicates that ticker frequency is between 8KHz and 64KHz and the counter is at least 12 bits wide.
+ */
+void lp_ticker_info_test(void);
+
+/** Test that the ticker continues operating in deep sleep mode.
+ *
+ * Given ticker is available.
+ * When ticker has interrupt set and board enters deep-sleep mode.
+ * Then ticker continues operating.
+ */
+void lp_ticker_deepsleep_test(void);
+
+
+/**@}*/
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/**@}*/

TESTS/mbed_hal/lp_ticker/main.cpp

@@ -1,5 +1,5 @@
 /* mbed Microcontroller Library
- * Copyright (c) 2016 ARM Limited
+ * Copyright (c) 2017 ARM Limited
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -13,177 +13,93 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#include "mbed.h"
+#include "greentea-client/test_env.h"
+#include "unity.h"
+#include "utest.h"
+#include "rtos.h"
+#include "lp_ticker_api_tests.h"
+#include "hal/lp_ticker_api.h"
 
 #if !DEVICE_LOWPOWERTIMER
-    #error [NOT_SUPPORTED] Low power timer not supported for this target
+#error [NOT_SUPPORTED] test not supported
 #endif
 
-#include "utest/utest.h"
-#include "unity/unity.h"
-#include "greentea-client/test_env.h"
-
-#include "mbed.h"
-#include "lp_ticker_api.h"
-
 using namespace utest::v1;
 
-static volatile bool complete;
-static volatile timestamp_t complete_time;
-static ticker_event_t delay_event;
-static const ticker_data_t *lp_ticker_data = get_lp_ticker_data();
-static Timer timer;
-static LowPowerTimer lp_timer;
-
-/* 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(uint32_t id) {
-    if ((uint32_t)&delay_event == id) {
-        complete_time = timer.read_us();
-        complete = true;
-    } else {
-        // Normal ticker handling
-        TimerEvent::irq(id);
-    }
-}
+volatile int intFlag = 0;
 
-void cb_done_deepsleep(uint32_t id) {
-    if ((uint32_t)&delay_event == id) {
-        complete_time = lp_timer.read_us();
-        complete = true;
-    } else {
-        // Normal ticker handling
-        TimerEvent::irq(id);
-    }
-}
+#define TICKER_INT_VAL 5000
+#define TICKER_DELTA 50
 
-void lp_ticker_delay_us(uint32_t delay_us, uint32_t tolerance)
+void ticker_event_handler_stub(const ticker_data_t * const ticker)
 {
-    complete = false;
-    uint32_t delay_ts;
-
-    ticker_set_handler(lp_ticker_data, cb_done);
-    ticker_remove_event(lp_ticker_data, &delay_event);
-    delay_ts = ticker_read(lp_ticker_data) + delay_us;
-
-    timer.reset();
-    timer.start();
-    ticker_insert_event(lp_ticker_data, &delay_event, delay_ts, (uint32_t)&delay_event);
-    while (!complete);
-    timer.stop();
+    /* Indicate that ISR has been executed in interrupt context. */
+    if (IS_IRQ_MODE()) {
+        intFlag++;
+    }
 
-    TEST_ASSERT_UINT32_WITHIN(tolerance, delay_us, complete_time);
-    TEST_ASSERT_TRUE(complete);
+    /* Clear and disable ticker interrupt. */
+    lp_ticker_clear_interrupt();
+    lp_ticker_disable_interrupt();
 }
 
-#if DEVICE_SLEEP
-void lp_ticker_1s_deepsleep()
+void wait_cycles(volatile unsigned int cycles)
 {
-    complete = false;
-    uint32_t delay_ts;
-
-    /*
-     * 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);
-
-    ticker_set_handler(lp_ticker_data, cb_done_deepsleep);
-    ticker_remove_event(lp_ticker_data, &delay_event);
-    delay_ts = ticker_read(lp_ticker_data) + 1000000;
-
-    /*
-     * We use here the low power timer instead of microsecond timer for start and
-     * end because the microseconds timer might be disable during deepsleep.
-     */
-    lp_timer.reset();
-    lp_timer.start();
-    ticker_insert_event(lp_ticker_data, &delay_event, delay_ts, (uint32_t)&delay_event);
-    /* Make sure deepsleep is allowed, to go to deepsleep */
-    bool deep_sleep_allowed = sleep_manager_can_deep_sleep();
-    TEST_ASSERT_TRUE_MESSAGE(deep_sleep_allowed, "Deep sleep should be allowed");
-    sleep();
-    while (!complete);
-    lp_timer.stop();
-
-    TEST_ASSERT_UINT32_WITHIN(LONG_TIMEOUT, 1000000, complete_time);
-    TEST_ASSERT_TRUE(complete);
+    while (cycles--);
 }
 
-void lp_ticker_1s_sleep()
+/* Test that the ticker has the correct frequency and number of bits. */
+void lp_ticker_info_test()
 {
-    complete = false;
-    uint32_t delay_ts;
-
-    ticker_set_handler(lp_ticker_data, cb_done);
-    ticker_remove_event(lp_ticker_data, &delay_event);
-    delay_ts = ticker_read(lp_ticker_data) + 1000000;
-
-    sleep_manager_lock_deep_sleep();
-    timer.reset();
-    timer.start();
-    bool deep_sleep_allowed = sleep_manager_can_deep_sleep();
-    TEST_ASSERT_FALSE_MESSAGE(deep_sleep_allowed, "Deep sleep should be disallowed");
-    ticker_insert_event(lp_ticker_data, &delay_event, delay_ts, (uint32_t)&delay_event);
-    sleep();
-    while (!complete);
-    timer.stop();
-    sleep_manager_unlock_deep_sleep();
-
-    TEST_ASSERT_UINT32_WITHIN(LONG_TIMEOUT, 1000000, complete_time);
-    TEST_ASSERT_TRUE(complete);
-}
-#endif /* DEVICE_SLEEP */
+    const ticker_info_t* p_ticker_info = lp_ticker_get_info();
 
-void lp_ticker_500us(void)
-{
-    lp_ticker_delay_us(500, SHORT_TIMEOUT);
+    TEST_ASSERT(p_ticker_info->frequency >= 8000);
+    TEST_ASSERT(p_ticker_info->frequency <= 64000);
+    TEST_ASSERT(p_ticker_info->bits >= 12);
 }
 
-void lp_ticker_1ms(void)
+/* Test that the ticker continues operating in deep sleep mode. */
+void lp_ticker_deepsleep_test()
 {
-    lp_ticker_delay_us(1000, SHORT_TIMEOUT);
-}
+    intFlag = 0;
 
-void lp_ticker_1s(void)
-{
-    lp_ticker_delay_us(1000000, LONG_TIMEOUT);
-}
+    set_lp_ticker_irq_handler(ticker_event_handler_stub);
 
-void lp_ticker_5s(void)
-{
-    lp_ticker_delay_us(5000000, LONG_TIMEOUT);
+    lp_ticker_init();
+
+    /* Wait for green tea UART transmission before entering deep-sleep mode. */
+    wait_cycles(40000);
+
+    const uint32_t tick_count = lp_ticker_read();
+
+    /* Set interrupt. Interrupt should be fired when tick count is equal to:
+     * tick_count + TICKER_INT_VAL. */
+    lp_ticker_set_interrupt(tick_count + TICKER_INT_VAL);
+
+    TEST_ASSERT_TRUE(sleep_manager_can_deep_sleep());
+
+    while (!intFlag) {
+        sleep();
+    }
+
+    TEST_ASSERT_EQUAL(1, intFlag);
 }
 
-utest::v1::status_t greentea_failure_handler(const Case *const source, const failure_t reason) {
-    greentea_case_failure_abort_handler(source, reason);
-    return STATUS_CONTINUE;
+utest::v1::status_t test_setup(const size_t number_of_cases)
+{
+    GREENTEA_SETUP(20, "default_auto");
+    return verbose_test_setup_handler(number_of_cases);
 }
 
 Case cases[] = {
-    Case("500us lp_ticker", lp_ticker_500us, greentea_failure_handler),
-    Case("1ms lp_ticker", lp_ticker_1ms, greentea_failure_handler),
-    Case("1s lp_ticker", lp_ticker_1s, greentea_failure_handler),
-    Case("5s lp_ticker", lp_ticker_5s, greentea_failure_handler),
-#if DEVICE_SLEEP
-    Case("1s lp_ticker sleep", lp_ticker_1s_sleep, greentea_failure_handler),
-    Case("1s lp_ticker deepsleep", lp_ticker_1s_deepsleep, greentea_failure_handler),
-#endif /* DEVICE_SLEEP */
+    Case("lp ticker info test", lp_ticker_info_test),
+    Case("lp ticker sleep test", lp_ticker_deepsleep_test),
 };
 
-utest::v1::status_t greentea_test_setup(const size_t number_of_cases) {
-    GREENTEA_SETUP(20, "default_auto");
-    lp_ticker_data->interface->init();
-    return greentea_test_setup_handler(number_of_cases);
-}
+Specification specification(test_setup, cases);
 
-Specification specification(greentea_test_setup, cases, greentea_test_teardown_handler);
-
-int main() {
-    Harness::run(specification);
+int main()
+{
+    return !Harness::run(specification);
 }