Diff: mbed/Timeout.h

Revision:

0:80df663dd15e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed/Timeout.h	Fri May 19 14:32:14 2017 +0000
@@ -0,0 +1,108 @@
+/* mbed Microcontroller Library - Timeout
+ * Copyright (c) 2007-2009 ARM Limited. All rights reserved.
+ */ 
+ 
+#ifndef MBED_TIMEOUT_H
+#define MBED_TIMEOUT_H
+
+#include "Ticker.h"
+
+namespace mbed {
+
+/* Class: Timeout
+ *  A Timeout is used to call a function at a point in the future
+ *
+ * You can use as many seperate Timeout objects as you require. 
+ *
+ * Example:
+ * > // Blink until timeout.
+ * >
+ * > #include "mbed.h"
+ * > 
+ * > Timeout timeout;
+ * > DigitalOut led(LED1);
+ * > 
+ * > int on = 1;
+ * > 
+ * > void attimeout() {
+ * >     on = 0;
+ * > }
+ * > 
+ * > int main() {
+ * >     timeout.attach(&attimeout, 5);
+ * >     while(on) {
+ * >         led = !led;
+ * >         wait(0.2);
+ * >     }
+ * > }
+ */
+class Timeout : public Ticker {
+
+#if 0 // For documentation
+
+    /* Function: attach
+     *  Attach a function to be called by the Timeout, specifiying the delay in seconds
+     *     
+     * Variables:
+     *  fptr - pointer to the function to be called
+     *  t - the time before the call in seconds
+     */
+    void attach(void (*fptr)(void), float t) {
+        attach_us(fptr, t * 1000000.0f);
+    }
+    
+    /* Function: attach
+     *  Attach a member function to be called by the Timeout, specifiying the delay in seconds
+     *     
+     * Variables:
+     *  tptr - pointer to the object to call the member function on
+     *  mptr - pointer to the member function to be called
+     *  t - the time before the calls in seconds
+     */
+    template<typename T>
+    void attach(T* tptr, void (T::*mptr)(void), float t) {
+        attach_us(tptr, mptr, t * 1000000.0f);
+    }
+    
+    /* Function: attach_us
+     *  Attach a function to be called by the Timeout, specifiying the delay in micro-seconds
+     *     
+     * Variables:
+     *  fptr - pointer to the function to be called
+     *  t - the time before the call in micro-seconds
+     */
+    void attach_us(void (*fptr)(void), unsigned int t) {
+        _function.attach(fptr);
+        setup(t);
+    }
+
+    /* Function: attach_us
+     *  Attach a member function to be called by the Timeout, specifiying the delay in micro-seconds
+     *     
+     * Variables:
+     *  tptr - pointer to the object to call the member function on
+     *  mptr - pointer to the member function to be called
+     *  t - the time before the call in micro-seconds
+     */    
+    template<typename T>
+    void attach_us(T* tptr, void (T::*mptr)(void), unsigned int t) {
+        _function.attach(tptr, mptr);
+        setup(t);
+    }
+    
+    /* Function: detach
+     *  Detach the function
+     */        
+    void detach();
+
+#endif
+    
+protected:
+
+    virtual void handler();
+
+};
+
+} // namespace mbed
+
+#endif