71 lines
1.4 KiB
Arduino
71 lines
1.4 KiB
Arduino
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/*
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TFT Graph
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This example for an Arduino screen reads
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the value of an analog sensor on A0, and
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graphs the values on the screen.
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This example code is in the public domain.
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Created 15 April 2013 by Scott Fitzgerald
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http://www.arduino.cc/en/Tutorial/TFTGraph
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*/
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#include <TFT.h> // Arduino LCD library
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#include <SPI.h>
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// pin definition for the Uno
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#define cs 10
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#define dc 9
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#define rst 8
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// pin definition for the Leonardo
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// #define cs 7
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// #define dc 0
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// #define rst 1
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TFT TFTscreen = TFT(cs, dc, rst);
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// position of the line on screen
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int xPos = 0;
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void setup() {
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// initialize the serial port
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Serial.begin(9600);
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// initialize the display
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TFTscreen.begin();
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// clear the screen with a pretty color
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TFTscreen.background(250, 16, 200);
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}
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void loop() {
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// read the sensor and map it to the screen height
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int sensor = analogRead(A0);
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int drawHeight = map(sensor, 0, 1023, 0, TFTscreen.height());
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// print out the height to the serial monitor
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Serial.println(drawHeight);
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// draw a line in a nice color
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TFTscreen.stroke(250, 180, 10);
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TFTscreen.line(xPos, TFTscreen.height() - drawHeight, xPos, TFTscreen.height());
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// if the graph has reached the screen edge
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// erase the screen and start again
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if (xPos >= 160) {
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xPos = 0;
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TFTscreen.background(250, 16, 200);
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} else {
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// increment the horizontal position:
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xPos++;
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}
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delay(16);
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}
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