Diff: mbed/Timer.h

Revision:

3:5dc0023e6284

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed/Timer.h	Fri Jan 31 23:19:28 2014 +0000
@@ -0,0 +1,95 @@
+/* mbed Microcontroller Library - Timer
+ * Copyright (c) 2007-2009 ARM Limited. All rights reserved.
+ * sford
+ */ 
+ 
+#ifndef MBED_TIMER_H
+#define MBED_TIMER_H
+
+#include "platform.h"
+#include "PinNames.h"
+#include "PeripheralNames.h"
+#include "Base.h"
+
+namespace mbed {
+
+/* Class: Timer
+ *  A general purpose timer 
+ *
+ * Example:
+ * > // Count the time to toggle a LED
+ * >
+ * > #include "mbed.h"
+ * > 
+ * > Timer timer;
+ * > DigitalOut led(LED1);
+ * > int begin, end;
+ * > 
+ * > int main() {
+ * >     timer.start();
+ * >     begin = timer.read_us();
+ * >     led = !led;
+ * >     end = timer.read_us();
+ * >     printf("Toggle the led takes %d us", end - begin);
+ * > }
+ */
+class Timer : public Base {
+
+public:
+
+    Timer(const char *name = NULL);
+    
+    /* Function: start
+     *  Start the timer
+     */
+    void start(); 
+
+    /* Function: stop
+     *  Stop the timer
+     */
+    void stop(); 
+
+    /* Function: reset
+     *  Reset the timer to 0. 
+     *
+     * If it was already counting, it will continue
+     */
+    void reset();
+
+    /* Function: read
+     *  Get the time passed in seconds
+     */
+    float read();
+
+    /* Function: read_ms
+     *  Get the time passed in mili-seconds
+     */
+    int read_ms();
+
+    /* Function: read_us
+     *  Get the time passed in micro-seconds
+     */
+    int read_us();
+
+#ifdef MBED_OPERATORS 
+    operator float();
+#endif
+
+#ifdef MBED_RPC
+    virtual const struct rpc_method *get_rpc_methods();
+    static struct rpc_class *get_rpc_class();
+#endif
+
+protected:
+
+    int slicetime();    
+    int _running;          // whether the timer is running
+    unsigned int _start;   // the start time of the latest slice
+    int _time;             // any accumulated time from previous slices
+    
+};
+
+} // namespace mbed
+
+#endif
+