RobotPictureBrowser

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1/* Picture Browser
2
3 You can make your own gallery/picture show with the
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5 Robot. Put some pictures on the SD card, start the
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7 sketch, they will display on the screen.
8
9 Use the left/right buttons to navigate through the
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11 previous and next images.
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13 Press up or down to enter a mode where you change
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15 the pictures by rotating the robot.
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17 You can add your own pictures onto the SD card, and
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19 view them in the Robot's gallery!
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21 Pictures must be uncompressed BMP, 24-bit color depth,
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23 160 pixels wide, and 128 pixels tall.
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25 They should be named as "picN.bmp". Replace 'N' with a
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27 number between 0 and 9.
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29 The current code only supports 10 pictures. How would you
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31 improve it to handle more?
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33 Circuit:
34
35 * Arduino Robot
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37 created 1 May 2013
38
39 by X. Yang
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41 modified 12 May 2013
42
43 by D. Cuartielles
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45 This example is in the public domain
46
47 */
48
49#include <ArduinoRobot.h> // include the robot library
50#include <Wire.h>
51
52const int NUM_PICS = 4;  //Total number of pictures in Gallery
53
54// name the modes
55
56const int CONTROL_MODE_KEY = 0;
57
58const int CONTROL_MODE_COMPASS = 1;
59
60char buffer[] = "pic1.bmp";  // current file name
61int i = 1;  // Current gallery sequence counter
62int mode = 0;  // Current mode
63
64// text to display on screen
65char modeNames[][9] = { "keyboard", "tilt    " };
66
67void setup() {
68
69  // initialize the Robot, SD card, display, and speaker
70
71  Robot.beginSD();
72
73  Robot.beginTFT();
74
75  Robot.begin();
76
77  // draw "lg0.bmp" and "lg1.bmp" on the screen
78
79  Robot.displayLogos();
80
81  // draw init3.bmp from the SD card on the screen
82
83  Robot.drawBMP("init3.bmp", 0, 0);
84
85  // display instructions
86
87  Robot.stroke(0, 0, 0);
88
89  Robot.text("The gallery\n\n has 2 modes, in\n keyboard mode, L/R\n key for switching\n pictures, U/D key\n for changing modes", 5, 5);
90
91  delay(6000);
92
93  Robot.clearScreen();
94
95  Robot.drawBMP("pb.bmp", 0, 0);
96
97  Robot.text("In tilt mode,\n quickly tilt the\n robot to switch\n pictures", 5, 5);
98
99  delay(4000);
100}
101
102void loop() {
103
104  buffer[3] = '0' + i; // change filename of the img to be displayed
105
106  Robot.drawBMP(buffer, 0, 0); // draw the file on the screen
107
108  // change control modes
109
110  switch (mode) {
111
112    case CONTROL_MODE_COMPASS:
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114      compassControl(3);
115
116      break;
117
118    case CONTROL_MODE_KEY:
119
120      keyboardControl();
121
122      break;
123
124  }
125
126  delay(200);
127}
128
129void keyboardControl() {
130
131  //Use buttons to control the gallery
132
133  while (true) {
134
135    int keyPressed = Robot.keyboardRead(); // read the button values
136
137    switch (keyPressed) {
138
139      case BUTTON_LEFT:  // display previous picture
140
141        if (--i < 1) {
142
143          i = NUM_PICS;
144
145        }
146
147        return;
148
149      case BUTTON_MIDDLE:  // do nothing
150
151      case BUTTON_RIGHT:  // display next picture
152
153        if (++i > NUM_PICS) {
154
155          i = 1;
156
157        }
158
159        return;
160
161      case BUTTON_UP:  // change mode
162
163        changeMode(-1);
164
165        return;
166
167      case BUTTON_DOWN:  // change mode
168
169        changeMode(1);
170
171        return;
172
173    }
174
175  }
176}
177
178// if controlling by the compass
179void compassControl(int change) {
180
181  // Rotate the robot to change the pictures
182
183  while (true) {
184
185    // read the value of the compass
186
187    int oldV = Robot.compassRead();
188
189    //get the change of angle
190
191    int diff = Robot.compassRead() - oldV;
192
193    if (diff > 180) {
194
195      diff -= 360;
196
197    } else if (diff < -180) {
198
199      diff += 360;
200
201    }
202
203    if (abs(diff) > change) {
204
205      if (++i > NUM_PICS) {
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207        i = 1;
208
209      }
210
211      return;
212
213    }
214
215    // change modes, if buttons are pressed
216
217    int keyPressed = Robot.keyboardRead();
218
219    switch (keyPressed) {
220
221      case BUTTON_UP:
222
223        changeMode(-1);
224
225        return;
226
227      case BUTTON_DOWN:
228
229        changeMode(1);
230
231        return;
232
233    }
234
235    delay(10);
236
237  }
238}
239
240// Change the control mode and display it on the LCD
241void changeMode(int changeDir) {
242
243  // alternate modes
244
245  mode += changeDir;
246
247  if (mode < 0) {
248
249    mode = 1;
250
251  } else if (mode > 1) {
252
253    mode = 0;
254
255  }
256
257  // display  the mode on screen
258
259  Robot.fill(255, 255, 255);
260
261  Robot.stroke(255, 255, 255);
262
263  Robot.rect(0, 0, 128, 12);
264
265  Robot.stroke(0, 0, 0);
266
267  Robot.text("Control:", 2, 2);
268
269  Robot.text(modeNames[mode], 52, 2);
270
271  delay(1000);
272}