example2.h

00001 /*
00002     Copyright (c) 2011 Andy Kirkham
00003  
00004     Permission is hereby granted, free of charge, to any person obtaining a copy
00005     of this software and associated documentation files (the "Software"), to deal
00006     in the Software without restriction, including without limitation the rights
00007     to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00008     copies of the Software, and to permit persons to whom the Software is
00009     furnished to do so, subject to the following conditions:
00010  
00011     The above copyright notice and this permission notice shall be included in
00012     all copies or substantial portions of the Software.
00013  
00014     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00015     IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00016     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00017     AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00018     LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00019     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00020     THE SOFTWARE.
00021     
00022     @file          example2.h 
00023     @purpose       Simple round-robin cooperative scheduler example
00024     @date          Mar 2011
00025     @author        Andy Kirkham
00026 */
00027 
00028 /* This example shows how to call tasks defined as C++ class methods. */
00029 
00030 #include "mbed.h"
00031 #include "SimpleScheduler.h"
00032 
00033 // Task class example.
00034 class Foo {
00035 protected:
00036     DigitalOut *_do;
00037 public:
00038     Foo(DigitalOut *d) { _do = d; }
00039     void func(SimpleTask *task) { *_do = !*_do; }
00040 };
00041 
00042 DigitalOut led1(LED1);
00043 DigitalOut led2(LED2);
00044 DigitalOut led3(LED3);
00045 DigitalOut led4(LED4);
00046 
00047 Foo foo1(&led1);
00048 Foo foo2(&led2);
00049 Foo foo3(&led3);
00050 Foo foo4(&led4);
00051 
00052 SimpleScheduler *scheduler;
00053 
00054 int main() {
00055 
00056     scheduler = new SimpleScheduler;
00057     
00058     scheduler
00059         ->addTask( new SimpleTask(0,   &foo1, &Foo::func) )
00060         ->addTask( new SimpleTask(200, &foo2, &Foo::func) )
00061         ->addTask( new SimpleTask(300, &foo3, &Foo::func) )
00062         ->addTask( new SimpleTask(0.4, &foo4, &Foo::func) )
00063     ;
00064     
00065     scheduler->run();    
00066 }