uwick. W / Mbed 2 deprecated MameController

Mamecontroller/joystick device wrapper library

Dependencies:   USBDevice mbed

DebounceIn.h@4:4f6e38b6c07e, 2014-12-10 (annotated)

Committer:
uswickra
Date:
Wed Dec 10 05:51:13 2014 +0000
Revision:
4:4f6e38b6c07e
Parent:
2:018f204f6037 
my controller;

Who changed what in which revision?

UserRevisionLine numberNew contents of line
uswickra 1:89c1c7f9245a 1 #ifndef DEBOUNCEIN_H
uswickra 1:89c1c7f9245a 2 #define DEBOUNCEIN_H
uswickra 1:89c1c7f9245a 3 #include "mbed.h"
uswickra 1:89c1c7f9245a 4
uswickra 1:89c1c7f9245a 5 class DebounceIn : public DigitalIn {
uswickra 1:89c1c7f9245a 6 public:
uswickra 1:89c1c7f9245a 7
uswickra 1:89c1c7f9245a 8 /** set_debounce_us
uswickra 1:89c1c7f9245a 9 *
uswickra 1:89c1c7f9245a 10 * Sets the debounce sample period time in microseconds, default is 1000 (1ms)
uswickra 1:89c1c7f9245a 11 *
uswickra 1:89c1c7f9245a 12 * @param int i The debounce sample period time to set.
uswickra 1:89c1c7f9245a 13 */
uswickra 1:89c1c7f9245a 14 void set_debounce_us(int i) { _ticker.attach_us(this, &DebounceIn::_callback, i); }
uswickra 1:89c1c7f9245a 15
uswickra 1:89c1c7f9245a 16 /** set_samples
uswickra 1:89c1c7f9245a 17 *
uswickra 1:89c1c7f9245a 18 * Defines the number of samples before switching the shadow
uswickra 1:89c1c7f9245a 19 * definition of the pin.
uswickra 1:89c1c7f9245a 20 *
uswickra 1:89c1c7f9245a 21 * @param int i The number of samples.
uswickra 1:89c1c7f9245a 22 */
uswickra 1:89c1c7f9245a 23 void set_samples(int i) { _samples = i; }
uswickra 1:89c1c7f9245a 24
uswickra 1:89c1c7f9245a 25 /** read
uswickra 1:89c1c7f9245a 26 *
uswickra 1:89c1c7f9245a 27 * Read the value of the debounced pin.
uswickra 1:89c1c7f9245a 28 */
uswickra 1:89c1c7f9245a 29 int read(void) { return _shadow; }
uswickra 1:89c1c7f9245a 30
uswickra 1:89c1c7f9245a 31 #ifdef MBED_OPERATORS
uswickra 1:89c1c7f9245a 32 /** operator int()
uswickra 1:89c1c7f9245a 33 *
uswickra 1:89c1c7f9245a 34 * Read the value of the debounced pin.
uswickra 1:89c1c7f9245a 35 */
uswickra 1:89c1c7f9245a 36 operator int() { return read(); }
uswickra 1:89c1c7f9245a 37 #endif
uswickra 1:89c1c7f9245a 38
uswickra 1:89c1c7f9245a 39 /** Constructor
uswickra 1:89c1c7f9245a 40 *
uswickra 1:89c1c7f9245a 41 * @param PinName pin The pin to assign as an input.
uswickra 1:89c1c7f9245a 42 */
uswickra 1:89c1c7f9245a 43 DebounceIn(PinName pin) : DigitalIn(pin) { _counter = 0; _samples = 10; set_debounce_us(1000); };
uswickra 1:89c1c7f9245a 44
uswickra 1:89c1c7f9245a 45 protected:
uswickra 1:89c1c7f9245a 46 void _callback(void) {
uswickra 1:89c1c7f9245a 47 if (DigitalIn::read()) {
uswickra 1:89c1c7f9245a 48 if (_counter < _samples) _counter++;
uswickra 1:89c1c7f9245a 49 if (_counter == _samples) _shadow = 1;
uswickra 1:89c1c7f9245a 50 }
uswickra 1:89c1c7f9245a 51 else {
uswickra 1:89c1c7f9245a 52 if (_counter > 0) _counter--;
uswickra 1:89c1c7f9245a 53 if (_counter == 0) _shadow = 0;
uswickra 1:89c1c7f9245a 54 }
uswickra 1:89c1c7f9245a 55 }
uswickra 1:89c1c7f9245a 56
uswickra 1:89c1c7f9245a 57 Ticker _ticker;
uswickra 1:89c1c7f9245a 58 int _shadow;
uswickra 1:89c1c7f9245a 59 int _counter;
uswickra 1:89c1c7f9245a 60 int _samples;
bhavk11 2:018f204f6037 61 };
bhavk11 2:018f204f6037 62 #endif