Andy K / FPointer

FPointer - A callback system that allows for 32bit unsigned ints to be passed to and from the callback.

Dependents:   FYPFinalProgram FYPFinalizeProgram KEYS SaveKeypad ... more

example2.h@0:fcfb13f40846, 2011-01-18 (annotated)

Committer:
AjK
Date:
Tue Jan 18 17:31:19 2011 +0000
Revision:
0:fcfb13f40846
Child:
1:d7803001a259
1.0 Initial release

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AjK 0:fcfb13f40846 1 /*
AjK 0:fcfb13f40846 2 Copyright (c) 2010 Andy Kirkham
AjK 0:fcfb13f40846 3
AjK 0:fcfb13f40846 4 Permission is hereby granted, free of charge, to any person obtaining a copy
AjK 0:fcfb13f40846 5 of this software and associated documentation files (the "Software"), to deal
AjK 0:fcfb13f40846 6 in the Software without restriction, including without limitation the rights
AjK 0:fcfb13f40846 7 to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
AjK 0:fcfb13f40846 8 copies of the Software, and to permit persons to whom the Software is
AjK 0:fcfb13f40846 9 furnished to do so, subject to the following conditions:
AjK 0:fcfb13f40846 10
AjK 0:fcfb13f40846 11 The above copyright notice and this permission notice shall be included in
AjK 0:fcfb13f40846 12 all copies or substantial portions of the Software.
AjK 0:fcfb13f40846 13
AjK 0:fcfb13f40846 14 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
AjK 0:fcfb13f40846 15 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
AjK 0:fcfb13f40846 16 FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AjK 0:fcfb13f40846 17 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
AjK 0:fcfb13f40846 18 LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
AjK 0:fcfb13f40846 19 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
AjK 0:fcfb13f40846 20 THE SOFTWARE.
AjK 0:fcfb13f40846 21 */
AjK 0:fcfb13f40846 22
AjK 0:fcfb13f40846 23 #ifdef AJK_COMPILE_EXAMPLE2
AjK 0:fcfb13f40846 24
AjK 0:fcfb13f40846 25 #include "mbed.h"
AjK 0:fcfb13f40846 26 #include "FPointer.h"
AjK 0:fcfb13f40846 27
AjK 0:fcfb13f40846 28 class FOO {
AjK 0:fcfb13f40846 29 protected:
AjK 0:fcfb13f40846 30 DigitalOut *led1;
AjK 0:fcfb13f40846 31 DigitalOut *led2;
AjK 0:fcfb13f40846 32 DigitalOut *led3;
AjK 0:fcfb13f40846 33 DigitalOut *led4;
AjK 0:fcfb13f40846 34
AjK 0:fcfb13f40846 35 public:
AjK 0:fcfb13f40846 36 FOO() {
AjK 0:fcfb13f40846 37 led1 = new DigitalOut(LED1);
AjK 0:fcfb13f40846 38 led2 = new DigitalOut(LED2);
AjK 0:fcfb13f40846 39 led3 = new DigitalOut(LED3);
AjK 0:fcfb13f40846 40 led4 = new DigitalOut(LED4);
AjK 0:fcfb13f40846 41 }
AjK 0:fcfb13f40846 42
AjK 0:fcfb13f40846 43 uint32_t myCallback(uint32_t value) {
AjK 0:fcfb13f40846 44 int i = *((int *)value);
AjK 0:fcfb13f40846 45 led4->write( (i & 1) ? 1 : 0 );
AjK 0:fcfb13f40846 46 led3->write( (i & 2) ? 1 : 0 );
AjK 0:fcfb13f40846 47 led2->write( (i & 4) ? 1 : 0 );
AjK 0:fcfb13f40846 48 led1->write( (i & 8) ? 1 : 0 );
AjK 0:fcfb13f40846 49 return 0;
AjK 0:fcfb13f40846 50 }
AjK 0:fcfb13f40846 51 };
AjK 0:fcfb13f40846 52
AjK 0:fcfb13f40846 53 // Create an instance of FOO called foo.
AjK 0:fcfb13f40846 54 FOO foo;
AjK 0:fcfb13f40846 55
AjK 0:fcfb13f40846 56 int main() {
AjK 0:fcfb13f40846 57 FPointer myPointer;
AjK 0:fcfb13f40846 58 int count = 0;
AjK 0:fcfb13f40846 59
AjK 0:fcfb13f40846 60 // Attach a C++ object/method pointer as the callback.
AjK 0:fcfb13f40846 61 myPointer.attach(&foo, &FOO::myCallback);
AjK 0:fcfb13f40846 62
AjK 0:fcfb13f40846 63 while(1) {
AjK 0:fcfb13f40846 64 wait(0.5);
AjK 0:fcfb13f40846 65
AjK 0:fcfb13f40846 66 // Make the callback passing a pointer
AjK 0:fcfb13f40846 67 // to the int count variable.
AjK 0:fcfb13f40846 68 myPointer.call((uint32_t)&count);
AjK 0:fcfb13f40846 69
AjK 0:fcfb13f40846 70 count++;
AjK 0:fcfb13f40846 71 }
AjK 0:fcfb13f40846 72 }
AjK 0:fcfb13f40846 73
AjK 0:fcfb13f40846 74 #endif