Diff: common/Timer.cpp

Revision:

0:7e2bd16f80af

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/common/Timer.cpp	Sat Jan 17 18:03:58 2015 +0000
@@ -0,0 +1,68 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 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.
+ */
+#include "Timer.h"
+#include "us_ticker_api.h"
+
+namespace mbed {
+
+Timer::Timer() : _running(), _start(), _time() {
+    reset();
+}
+
+void Timer::start() {
+    if (!_running) {
+        _start = us_ticker_read();
+        _running = 1;
+    }
+}
+
+void Timer::stop() {
+    _time += slicetime();
+    _running = 0;
+}
+
+int Timer::read_us() {
+    return _time + slicetime();
+}
+
+float Timer::read() {
+    return (float)read_us() / 1000000.0f;
+}
+
+int Timer::read_ms() {
+    return read_us() / 1000;
+}
+
+int Timer::slicetime() {
+    if (_running) {
+        return us_ticker_read() - _start;
+    } else {
+        return 0;
+    }
+}
+
+void Timer::reset() {
+    _start = us_ticker_read();
+    _time = 0;
+}
+
+#ifdef MBED_OPERATORS
+Timer::operator float() {
+    return read();
+}
+#endif
+
+} // namespace mbed