![](/media/cache/profiles/a7bf3f5462cc82062e41b3a2262e1a21.50x50_q85.jpg)
Digital JoyStick function, interrupt driven
main.cpp
- Committer:
- pwheels
- Date:
- 2011-03-13
- Revision:
- 0:1136d6d5aa1c
File content as of revision 0:1136d6d5aa1c:
/* Copyright (c) 2011 Pro-Serv 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. Usage and assumptions: the digital joystick device is directly attached to the used pins as per function call, common contact to ground, using the internal pull-up's but one can use external pull-up's too or even a small capaitor if device shows signs of contact bounce. Operation modes: By default it's using dynamic mode which means that the main program may not see the expected pressed joystick contact in it's scan loop as another joystick contact may already be active. Using the static mode will capture the first joystick contact untill it's been read by the getJoyValue function To do: Adding a callable service routine to be used by the main program loop */ #include "mbed.h" #include "joy.h" JoyRead joy ( p21, p22, p23, p24, p25, PullUp); // center, DigitalOut led1(LED1); int main() { // buffer first joystick movement, clear it upon read value joy.setJoyStatic(1); while(1) { if (joy.getJoyStatus()) { if (joy.getJoyKey(4)) { printf("Joy Down is active\r\n"); } printf("Joy value %x\r\n", joy.getJoyValue()); } led1 = 0; wait(0.2); led1 = 1; wait(0.2); } }