| /* | |
| 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 | |
| */ | |
| // 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); | |
| } | |