Diff: cpp/Timer.cpp

Revision:

0:fd0d7bdfcdc2

Child:

2:143cac498751

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/cpp/Timer.cpp	Tue Nov 20 17:24:08 2012 +0000
@@ -0,0 +1,72 @@
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2012 ARM Limited
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+ * SOFTWARE.
+ */
+#include "Timer.h"
+#include "us_ticker_api.h"
+
+namespace mbed {
+
+Timer::Timer() {
+    reset();
+}
+
+void Timer::start() {
+    _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() / 1000000.0;
+}
+
+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