/* Esplora TFT Graph This example for the Esplora with an Arduino TFT reads the value of the light sensor, and graphs the values on the screen. This example code is in the public domain. Created 15 April 2013 by Scott Fitzgerald http://www.arduino.cc/en/Tutorial/EsploraTFTGraph */ #include #include // Arduino LCD library // position of the line on screen int xPos = 0; void setup() { // initialize the screen EsploraTFT.begin(); // clear the screen with a nice color EsploraTFT.background(250, 16, 200); } void loop() { // read the sensor value int sensor = Esplora.readLightSensor(); // map the sensor value to the height of the screen int graphHeight = map(sensor, 0, 1023, 0, EsploraTFT.height()); // draw the line in a pretty color EsploraTFT.stroke(250, 180, 10); EsploraTFT.line(xPos, EsploraTFT.height() - graphHeight, xPos, EsploraTFT.height()); // if the graph reaches the edge of the screen // erase it and start over from the other side if (xPos >= 160) { xPos = 0; EsploraTFT.background(250, 16, 200); } else { // increment the horizontal position: xPos++; } delay(16); }