Mouse.move()

1#include <Mouse.h>
2
3    const int xAxis = A1;         //analog sensor for X axis
4    const int yAxis = A2;         // analog sensor for Y axis
5
6    int range = 12;               // output range of X or Y movement
7    int responseDelay = 2;        // response delay of the mouse, in ms
8    int threshold = range / 4;    // resting threshold
9    int center = range / 2;       // resting position value
10    int minima[] = {1023, 1023};  // actual analogRead minima for {x, y}
11    int maxima[] = {0, 0};        // actual analogRead maxima for {x, y}
12    int axis[] = {xAxis, yAxis};  // pin numbers for {x, y}
13    int mouseReading[2];          // final mouse readings for {x, y}
14
15
16    void setup() {
17      Mouse.begin();
18    }
19
20    void loop() {
21      // read and scale the two axes:
22      int xReading = readAxis(0);
23      int yReading = readAxis(1);
24
25      // move the mouse:
26      Mouse.move(xReading, yReading, 0);
27      delay(responseDelay);
28    }
29
30    /*
31      reads an axis (0 or 1 for x or y) and scales the
32      analog input range to a range from 0 to <range>
33    */
34
35    int readAxis(int axisNumber) {
36      int distance = 0; // distance from center of the output range
37
38      // read the analog input:
39      int reading = analogRead(axis[axisNumber]);
40
41      // of the current reading exceeds the max or min for this axis,
42      // reset the max or min:
43      if (reading < minima[axisNumber]) {
44        minima[axisNumber] = reading;
45      }
46      if (reading > maxima[axisNumber]) {
47        maxima[axisNumber] = reading;
48      }
49
50      // map the reading from the analog input range to the output range:
51      reading = map(reading, minima[axisNumber], maxima[axisNumber], 0, range);
52
53      // if the output reading is outside from the
54      // rest position threshold,  use it:
55      if (abs(reading - center) > threshold) {
56        distance = (reading - center);
57      }
58
59      // the Y axis needs to be inverted in order to
60      // map the movement correctly:
61      if (axisNumber == 1) {
62        distance = -distance;
63      }
64
65      // return the distance for this axis:
66      return distance;
67    }