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August 17, 2019 03:28
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/* | |
JoystickMouseControl | |
Controls the mouse from a joystick on an Arduino Leonardo, Micro or Due. | |
Uses a pushbutton to turn on and off mouse control, and a second pushbutton | |
to click the left mouse button. | |
Hardware: | |
- 2-axis joystick connected to pins A0 and A1 | |
- pushbuttons connected to pin D2 and D3 | |
The mouse movement is always relative. This sketch reads two analog inputs | |
that range from 0 to 1023 (or less on either end) and translates them into | |
ranges of -6 to 6. | |
The sketch assumes that the joystick resting values are around the middle of | |
the range, but that they vary within a threshold. | |
WARNING: When you use the Mouse.move() command, the Arduino takes over your | |
mouse! Make sure you have control before you use the command. This sketch | |
includes a pushbutton to toggle the mouse control state, so you can turn on | |
and off mouse control. | |
created 15 Sep 2011 | |
updated 28 Mar 2012 | |
by Tom Igoe | |
This example code is in the public domain. | |
http://www.arduino.cc/en/Tutorial/JoystickMouseControl | |
*/ | |
#include "Mouse.h" | |
// set pin numbers for switch, joystick axes, and LED: | |
const int switchPin = 2; // switch to turn on and off mouse control | |
const int mouseButton = 3; // input pin for the mouse pushButton | |
const int xAxis = A0; // joystick X axis | |
const int yAxis = A1; // joystick Y axis | |
const int ledPin = 5; // Mouse control LED | |
// parameters for reading the joystick: | |
int range = 12; // output range of X or Y movement | |
int responseDelay = 5; // response delay of the mouse, in ms | |
int threshold = range / 4; // resting threshold | |
int center = range / 2; // resting position value | |
bool mouseIsActive = false; // whether or not to control the mouse | |
int lastSwitchState = LOW; // previous switch state | |
void setup() { | |
pinMode(switchPin, INPUT); // the switch pin | |
pinMode(ledPin, OUTPUT); // the LED pin | |
// take control of the mouse: | |
Mouse.begin(); | |
} | |
void loop() { | |
// read the switch: | |
int switchState = digitalRead(switchPin); | |
// if it's changed and it's high, toggle the mouse state: | |
if (switchState != lastSwitchState) { | |
if (switchState == HIGH) { | |
mouseIsActive = !mouseIsActive; | |
// turn on LED to indicate mouse state: | |
digitalWrite(ledPin, mouseIsActive); | |
} | |
} | |
// save switch state for next comparison: | |
lastSwitchState = switchState; | |
// read and scale the two axes: | |
int xReading = readAxis(A0); | |
int yReading = readAxis(A1); | |
// if the mouse control state is active, move the mouse: | |
if (mouseIsActive) { | |
Mouse.move(xReading, yReading, 0); | |
} | |
// read the mouse button and click or not click: | |
// if the mouse button is pressed: | |
if (digitalRead(mouseButton) == HIGH) { | |
// if the mouse is not pressed, press it: | |
if (!Mouse.isPressed(MOUSE_LEFT)) { | |
Mouse.press(MOUSE_LEFT); | |
} | |
} | |
// else the mouse button is not pressed: | |
else { | |
// if the mouse is pressed, release it: | |
if (Mouse.isPressed(MOUSE_LEFT)) { | |
Mouse.release(MOUSE_LEFT); | |
} | |
} | |
// read the mouse button and click or not click: | |
// if the mouse button is pressed: | |
if (digitalRead(mouseMiddleButton) == HIGH) { | |
// if the mouse is not pressed, press it: | |
if (!Mouse.isPressed(MOUSE_MIDDLE)) { | |
Mouse.press(MOUSE_MIDDLE); | |
} | |
} | |
// else the mouse button is not pressed: | |
else { | |
// if the mouse is pressed, release it: | |
if (Mouse.isPressed(MOUSE_MIDDLE)) { | |
Mouse.release(MOUSE_MIDDLE); | |
} | |
} | |
delay(responseDelay); | |
} | |
/* | |
reads an axis (0 or 1 for x or y) and scales the analog input range to a range | |
from 0 to <range> | |
*/ | |
int readAxis(int thisAxis) { | |
// read the analog input: | |
int reading = analogRead(thisAxis); | |
// map the reading from the analog input range to the output range: | |
reading = map(reading, 0, 1023, 0, range); | |
// if the output reading is outside from the rest position threshold, use it: | |
int distance = reading - center; | |
if (abs(distance) < threshold) { | |
distance = 0; | |
} | |
// return the distance for this axis: | |
return distance; | |
} |
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