| /* | |
| 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://www.arduino.cc/en/Tutorial/TFTGraph | |
| */ | |
| // pin definition for the Uno | |
| // 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); | |
| } | |