Diff: drivers/source/Ticker.cpp

Revision:

1:9db0e321a9f4

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/drivers/source/Ticker.cpp	Tue Dec 31 06:02:27 2019 +0000
@@ -0,0 +1,77 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2019 ARM Limited
+ * 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 "drivers/Ticker.h"
+
+#include "drivers/TimerEvent.h"
+#include "hal/ticker_api.h"
+#include "platform/mbed_critical.h"
+#include "platform/mbed_power_mgmt.h"
+
+namespace mbed {
+
+Ticker::Ticker() : TimerEvent(), _delay(0), _function(0), _lock_deepsleep(true)
+{
+}
+
+// When low power ticker is in use, then do not disable deep sleep.
+Ticker::Ticker(const ticker_data_t *data) : TimerEvent(data), _delay(0), _function(0), _lock_deepsleep(!data->interface->runs_in_deep_sleep)
+{
+}
+
+void Ticker::detach()
+{
+    core_util_critical_section_enter();
+    remove();
+    // unlocked only if we were attached (we locked it) and this is not low power ticker
+    if (_function && _lock_deepsleep) {
+        sleep_manager_unlock_deep_sleep();
+    }
+
+    _function = 0;
+    core_util_critical_section_exit();
+}
+
+void Ticker::setup(us_timestamp_t t)
+{
+    core_util_critical_section_enter();
+    remove();
+    _delay = t;
+    insert_absolute(_delay + ticker_read_us(_ticker_data));
+    core_util_critical_section_exit();
+}
+
+void Ticker::handler()
+{
+    insert_absolute(event.timestamp + _delay);
+    if (_function) {
+        _function();
+    }
+}
+
+void Ticker::attach_us(Callback<void()> func, us_timestamp_t t)
+{
+    core_util_critical_section_enter();
+    // lock only for the initial callback setup and this is not low power ticker
+    if (!_function && _lock_deepsleep) {
+        sleep_manager_lock_deep_sleep();
+    }
+    _function = func;
+    setup(t);
+    core_util_critical_section_exit();
+}
+
+} // namespace mbed