Ries Twisk / Mbed 2 deprecated JoyStick

HID Joystick - For use with X-Plane or other programs that can read HID JoySticks

Dependencies:   USBDevice mbed-rtos mbed

Fork of JoyStick by Ries Twisk

This is a simple Joystick HID that I use for xplane and a home build yoke + paddels, see this forum with the look and feel of it : http://forums.x-plane.org/index.php?showtopic=70041

The analog input are filtered with a LowPass IIR filter and the digital input's will be derived from the analog input and de-bounced.

The analog values are read at a 1Khz interval and to ensure we don't push the USB stack to much at a maximum rate of 20 updates/sec HID data is send over USB only if any values where changed. The JoyStick will send 16Bit analog values as opposite of 8 bit values that are normally used to increase accuracy of the whole system. This is well noticeable within x-plane!

The JoyStick uses the JoyStick copied from Wim Huiskamp and modified to suite my needs and the MBED RTOS libraries for reading analog inputs, sending debug data over USB and sending HID data, 3 threads in total.

SimpleButtonDecoder.h@5:a0bb17c379ce, 2016-06-22 (annotated)

Committer:
rvt
Date:
Wed Jun 22 12:50:16 2016 +0000
Revision:
5:a0bb17c379ce
Parent:
2:ae7a31a3c618 
Latest

Who changed what in which revision?

UserRevisionLine numberNew contents of line
rvt 2:ae7a31a3c618 1 #ifndef SIMPLEBUTTONDECODER_H
rvt 2:ae7a31a3c618 2 #define SIMPLEBUTTONDECODER_H
rvt 2:ae7a31a3c618 3
rvt 2:ae7a31a3c618 4 #include "mbed.h"
rvt 2:ae7a31a3c618 5 #include "AnalogInFiltered.h"
rvt 2:ae7a31a3c618 6
rvt 2:ae7a31a3c618 7 /**
rvt 2:ae7a31a3c618 8 ButtonDecoder.
rvt 2:ae7a31a3c618 9 I was planning to make a r2R ladder network but I couldn't find any very accurate resitors here in Ecuador (no Señor, no tengo ... sigh)
rvt 2:ae7a31a3c618 10 so I bought some 5% resitors but they didn'0t work well enough. So this decoder sinply decoder the end value and this
rvt 2:ae7a31a3c618 11 it means only one button at a timn can be detected reliable.
rvt 2:ae7a31a3c618 12 */
rvt 2:ae7a31a3c618 13 class SimpleButtonDecoder {
rvt 2:ae7a31a3c618 14 private:
rvt 2:ae7a31a3c618 15 AnalogInFiltered *_analogIn;
rvt 2:ae7a31a3c618 16 int _value;
rvt 2:ae7a31a3c618 17 int _fuzzyFactor;
rvt 2:ae7a31a3c618 18 bool _isChanged;
rvt 2:ae7a31a3c618 19 short _deBounceRuns;
rvt 2:ae7a31a3c618 20 short _debounceCount;
rvt 2:ae7a31a3c618 21
rvt 2:ae7a31a3c618 22 bool _pulseUp;
rvt 2:ae7a31a3c618 23 bool _pulseDown;
rvt 2:ae7a31a3c618 24 bool _status;
rvt 2:ae7a31a3c618 25 public:
rvt 2:ae7a31a3c618 26 /**
rvt 2:ae7a31a3c618 27 filter : Failter chain
rvt 2:ae7a31a3c618 28 pin : Analog input to read
rvt 2:ae7a31a3c618 29 */
rvt 2:ae7a31a3c618 30 SimpleButtonDecoder(AnalogInFiltered *_analogIn, int value, short deBounceRuns);
rvt 2:ae7a31a3c618 31 ~SimpleButtonDecoder();
rvt 2:ae7a31a3c618 32
rvt 2:ae7a31a3c618 33 // Process the buttons status information
rvt 2:ae7a31a3c618 34 // Call this function for the button to updates it's state
rvt 2:ae7a31a3c618 35 void process();
rvt 2:ae7a31a3c618 36
rvt 2:ae7a31a3c618 37 // Returns the current button status
rvt 2:ae7a31a3c618 38 // This state will be updated after each 'process' call
rvt 2:ae7a31a3c618 39 bool getStatus();
rvt 2:ae7a31a3c618 40
rvt 2:ae7a31a3c618 41 // Test if the input value is changed based on a offset
rvt 2:ae7a31a3c618 42 // This state will be updated after each 'process' call
rvt 2:ae7a31a3c618 43 bool getIsChanged();
rvt 2:ae7a31a3c618 44
rvt 2:ae7a31a3c618 45 // Return's TRUE if the button was pressed
rvt 2:ae7a31a3c618 46 // This state will be updated after each 'process' call
rvt 2:ae7a31a3c618 47 bool getIsPressed();
rvt 2:ae7a31a3c618 48
rvt 2:ae7a31a3c618 49 // Returns TRUE if the button was just released,
rvt 2:ae7a31a3c618 50 // This state will be updated after each 'process' call
rvt 2:ae7a31a3c618 51 bool getIsReleased();
rvt 2:ae7a31a3c618 52
rvt 2:ae7a31a3c618 53 };
rvt 2:ae7a31a3c618 54
rvt 2:ae7a31a3c618 55 #endif