| /* | |
| 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. | |
| https://www.arduino.cc/en/Tutorial/BuiltInExamples/JoystickMouseControl | |
| */ | |
| // 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); | |
| } | |
| } | |
| 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; | |
| } | |