[136] | 1 | /*
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| 2 |
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| 3 | TFT Graph
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| 4 |
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| 5 | This example for an Arduino screen reads
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| 6 | the value of an analog sensor on A0, and
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| 7 | graphs the values on the screen.
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| 8 |
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| 9 | This example code is in the public domain.
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| 10 |
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| 11 | Created 15 April 2013 by Scott Fitzgerald
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| 12 |
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| 13 | http://arduino.cc/en/Tutorial/TFTGraph
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| 14 |
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| 15 | */
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| 16 |
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| 17 | #include <TFT.h> // Arduino LCD library
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| 18 | #include <SPI.h>
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| 19 |
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| 20 | // pin definition for the Uno
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| 21 | #define cs 10
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| 22 | #define dc 9
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| 23 | #define rst 8
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| 24 |
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| 25 | // pin definition for the Leonardo
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| 26 | // #define cs 7
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| 27 | // #define dc 0
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| 28 | // #define rst 1
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| 29 |
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| 30 | TFT TFTscreen = TFT(cs, dc, rst);
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| 31 |
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| 32 | // position of the line on screen
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| 33 | int xPos = 0;
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| 34 |
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| 35 | void setup() {
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| 36 | // initialize the serial port
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| 37 | Serial.begin(9600);
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| 38 |
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| 39 | // initialize the display
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| 40 | TFTscreen.begin();
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| 41 |
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| 42 | // clear the screen with a pretty color
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| 43 | TFTscreen.background(250, 16, 200);
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| 44 | }
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| 45 |
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| 46 | void loop() {
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| 47 | // read the sensor and map it to the screen height
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| 48 | int sensor = analogRead(A0);
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| 49 | int drawHeight = map(sensor, 0, 1023, 0, TFTscreen.height());
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| 50 |
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| 51 | // print out the height to the serial monitor
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| 52 | Serial.println(drawHeight);
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| 53 |
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| 54 | // draw a line in a nice color
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| 55 | TFTscreen.stroke(250, 180, 10);
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| 56 | TFTscreen.line(xPos, TFTscreen.height() - drawHeight, xPos, TFTscreen.height());
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| 57 |
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| 58 | // if the graph has reached the screen edge
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| 59 | // erase the screen and start again
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| 60 | if (xPos >= 160) {
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| 61 | xPos = 0;
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| 62 | TFTscreen.background(250, 16, 200);
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| 63 | }
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| 64 | else {
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| 65 | // increment the horizontal position:
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| 66 | xPos++;
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| 67 | }
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| 68 |
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| 69 | delay(16);
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| 70 | }
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| 71 |
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