[136] | 1 | /* Robot Inputs
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| 2 |
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| 3 | This sketch shows you how to use the on-board
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| 4 | potentiometer and buttons as inputs.
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| 5 |
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| 6 | Turning the potentiometer draws a clock-shaped
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| 7 | circle. The up and down buttons change the pitch,
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| 8 | while the left and right buttons change the tempo.
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| 9 | The middle button resets tempo and pitch.
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| 10 |
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| 11 | Circuit:
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| 12 | * Arduino Robot
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| 13 |
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| 14 | created 1 May 2013
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| 15 | by X. Yang
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| 16 | modified 12 May 2013
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| 17 | by D. Cuartielles
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| 18 |
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| 19 | This example is in the public domain
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| 20 | */
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| 21 |
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| 22 | #include <ArduinoRobot.h>
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| 23 | #include <Wire.h>
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| 24 | #include <SPI.h>
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| 25 |
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| 26 | // default tempo and pitch of the music
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| 27 | int tempo = 60;
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| 28 | int pitch = 1000;
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| 29 |
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| 30 | void setup() {
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| 31 | // initialize the Robot, SD card, speaker, and display
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| 32 | Robot.begin();
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| 33 | Robot.beginTFT();
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| 34 | Robot.beginSpeaker();
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| 35 | Robot.beginSD();
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| 36 |
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| 37 | // draw "lg0.bmp" and "lg1.bmp" on the screen
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| 38 | Robot.displayLogos();
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| 39 |
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| 40 | // play a sound file
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| 41 | Robot.playFile("Melody.sqm");
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| 42 | }
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| 43 |
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| 44 | void loop() {
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| 45 | // check the value of the buttons
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| 46 | keyDown(Robot.keyboardRead());
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| 47 |
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| 48 | // check the value of the pot
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| 49 | drawKnob(Robot.knobRead());
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| 50 | }
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| 51 |
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| 52 | // Draw the basic interface
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| 53 | void renderUI() {
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| 54 | //fill the buttons blank
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| 55 | Robot.fill(255, 255, 255);
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| 56 | Robot.rect(53, 58, 13, 13); // left
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| 57 | Robot.rect(93, 58, 13, 13); // right
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| 58 | Robot.rect(73, 38, 13, 13); // up
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| 59 | Robot.circle(79, 64, 6); // middle
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| 60 | Robot.rect(73, 78, 13, 13); // down
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| 61 |
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| 62 | //draw the knob
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| 63 | Robot.noFill();
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| 64 | Robot.circle(26, 116, 17); // knob
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| 65 |
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| 66 | //draw the vertical bargraph
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| 67 | int fullPart = map(pitch, 200, 2000, 0, 58); //length of filled bargraph
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| 68 | Robot.fill(255, 255, 255);
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| 69 | Robot.rect(21, 30, 13, 58 - fullPart);
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| 70 | Robot.fill(0, 0, 255);
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| 71 | Robot.rect(21, 88 - fullPart, 13, fullPart); //58-fullPart+30
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| 72 |
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| 73 | //draw the horizontal bargraph
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| 74 | fullPart = map(tempo, 20, 100, 0, 58); // length of filled bargraph
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| 75 | Robot.fill(255, 190, 0);
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| 76 | Robot.rect(53, 110, fullPart, 13);
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| 77 | Robot.fill(255, 255, 255);
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| 78 | Robot.rect(53 + fullPart, 110, 58 - fullPart, 13);
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| 79 | }
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| 80 |
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| 81 | void keyDown(int keyCode) {
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| 82 | // use a static int so it is persistent over time
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| 83 | static int oldKey;
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| 84 | switch (keyCode) {
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| 85 | case BUTTON_LEFT:
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| 86 | //left button pressed, reduces tempo
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| 87 | tempo -= 5;
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| 88 | if (tempo < 20) tempo = 20; //lowest tempo 20
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| 89 | Robot.fill(255, 190, 0);
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| 90 |
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| 91 | Robot.rect(53, 58, 13, 13);
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| 92 | break;
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| 93 | case BUTTON_RIGHT:
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| 94 | //right button pressed, increases tempo
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| 95 | tempo += 5;
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| 96 | if (tempo > 100) tempo = 100; //highest tempo 100
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| 97 | Robot.fill(255, 190, 0);
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| 98 | Robot.rect(93, 58, 13, 13);
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| 99 | break;
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| 100 | case BUTTON_UP:
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| 101 | //up button pressed, increases pitch
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| 102 | pitch += 120;
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| 103 | if (pitch > 2000) pitch = 2000;
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| 104 | Robot.fill(0, 0, 255);
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| 105 |
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| 106 | Robot.rect(73, 38, 13, 13);
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| 107 | break;
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| 108 | case BUTTON_DOWN:
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| 109 | //down button pressed, reduces pitch
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| 110 | pitch -= 120;
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| 111 | if (pitch < 200) {
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| 112 | pitch = 200;
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| 113 | }
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| 114 | Robot.fill(0, 0, 255);
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| 115 |
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| 116 | Robot.rect(73, 78, 13, 13);
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| 117 | break;
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| 118 | case BUTTON_MIDDLE:
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| 119 | //middle button pressed, resets tempo and pitch
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| 120 | tempo = 60;
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| 121 | pitch = 1000;
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| 122 | Robot.fill(160, 160, 160);
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| 123 |
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| 124 | Robot.circle(79, 64, 6);
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| 125 | break;
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| 126 | case BUTTON_NONE:
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| 127 | //Only when the keys are released(thus BUTTON_NONE is
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| 128 | //encountered the first time), the interface will be
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| 129 | //re-drawn.
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| 130 | if (oldKey != BUTTON_NONE) {
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| 131 | renderUI();
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| 132 | }
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| 133 | break;
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| 134 | }
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| 135 | if (oldKey != keyCode) {
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| 136 | // change the song's tempo
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| 137 | Robot.tempoWrite(tempo);
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| 138 | // change the song's pitch
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| 139 | Robot.tuneWrite(float(pitch / 1000.0));
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| 140 | }
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| 141 | oldKey = keyCode;
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| 142 | }
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| 143 |
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| 144 | //Draw a circle according to value
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| 145 | //of the knob.
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| 146 | void drawKnob(int val) {
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| 147 | static int val_old;
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| 148 | int r = map(val, 0, 1023, 1, 15);
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| 149 |
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| 150 | //Only updates when the
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| 151 | //value changes.
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| 152 | if (val_old != r) {
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| 153 | Robot.noFill();
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| 154 |
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| 155 | //erase the old circle
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| 156 | Robot.stroke(255, 255, 255);
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| 157 | Robot.circle(26, 116, r + 1);
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| 158 |
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| 159 | //draw the new circle
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| 160 | Robot.stroke(255, 0, 255);
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| 161 | Robot.circle(26, 116, r);
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| 162 |
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| 163 | Robot.stroke(0, 0, 0);
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| 164 |
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| 165 | val_old = r;
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| 166 | }
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| 167 | }
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