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