EsploraTFTEtchASketch

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1#include <Esplora.h>
2#include <TFT.h>
3#include <SPI.h>

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1int xPos = EsploraTFT.width()/2;
2int yPos = EsploraTFT.height()/2;

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1void setup() {
2
3  EsploraTFT.begin();
4
5  EsploraTFT.background(0,0,0);
6}

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1void loop()
2{
3
4  int xAxis = Esplora.readJoystickX();
5
6  int yAxis = Esplora.readJoystickY();
7
8  if (xAxis<10 && xAxis>-10){
9
10    xPos=xPos;
11
12  }
13
14  else{
15
16    xPos = xPos + (map(xAxis, -512, 512, 2, -2));
17
18  }
19
20  if (yAxis<10 && yAxis>-10){
21
22    yAxis=yAxis;
23
24  }
25
26  else{
27
28    yPos = yPos + (map(yAxis, -512, 512, -2, 2));
29
30  }

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1if(xPos > 159){
2
3    (xPos = 159);
4
5  }
6
7  if(xPos < 0){
8
9    (xPos = 0);
10
11  }
12
13  if(yPos > 127){
14
15    (yPos = 127);
16
17  }
18
19  if(yPos < 0){
20
21    (yPos = 0);
22
23  }
24
25  EsploraTFT.stroke(255,255,255);
26
27  EsploraTFT.point(xPos,yPos);

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1if(abs(Esplora.readAccelerometer(X_AXIS))>200 || abs(Esplora.readAccelerometer(Y_AXIS))>200){
2
3    EsploraTFT.background(0,0,0);
4
5  }
6
7  delay(33);
8}

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1/*
2
3 Esplora TFT EtchASketch
4
5 This example for the Arduino TFT and Esplora draws
6
7 a white line on the screen, based on the position
8
9 of the joystick. To clear the screen, shake the
10
11 Esplora, using the values from the accelerometer.
12
13 This example code is in the public domain.
14
15 Created 15 April 2013 by Scott Fitzgerald
16
17 http://www.arduino.cc/en/Tutorial/EsploraTFTEtchASketch
18
19 */
20
21#include <Esplora.h>
22#include <TFT.h>  // Arduino LCD library
23#include <SPI.h>
24
25// initial position of the cursor
26int xPos = EsploraTFT.width() / 2;
27int yPos = EsploraTFT.height() / 2;
28
29void setup() {
30
31  // initialize the display
32
33  EsploraTFT.begin();
34
35  // clear the background
36
37  EsploraTFT.background(0, 0, 0);
38}
39
40void loop() {
41
42  int xAxis = Esplora.readJoystickX();    // read the X axis
43
44  int yAxis = Esplora.readJoystickY();    // read the Y axis
45
46  // update the position of the line
47
48  // depending on the position of the joystick
49
50  if (xAxis < 10 && xAxis > -10) {
51
52    xPos = xPos;
53
54  } else {
55
56    xPos = xPos + (map(xAxis, -512, 512, 2, -2));
57
58  }
59
60  if (yAxis < 10 && yAxis > -10) {
61
62    yAxis = yAxis;
63
64  } else {
65
66    yPos = yPos + (map(yAxis, -512, 512, -2, 2));
67
68  }
69
70  // don't let the point go past the screen edges
71
72  if (xPos > 159) {
73
74    (xPos = 159);
75
76  }
77
78  if (xPos < 0) {
79
80    (xPos = 0);
81
82  }
83
84  if (yPos > 127) {
85
86    (yPos = 127);
87
88  }
89
90  if (yPos < 0) {
91
92    (yPos = 0);
93
94  }
95
96  // draw the point
97
98  EsploraTFT.stroke(255, 255, 255);
99
100  EsploraTFT.point(xPos, yPos);
101
102  // check the accelerometer values and clear
103
104  // the screen if it is being shaken
105
106  if (abs(Esplora.readAccelerometer(X_AXIS)) > 200 || abs(Esplora.readAccelerometer(Y_AXIS)) > 200) {
107
108    EsploraTFT.background(0, 0, 0);
109
110  }
111
112  delay(33);
113}