arduino stuffs
Diffstat (limited to 'libraries/TFT/examples/Esplora/EsploraTFTGraph/EsploraTFTGraph.ino')
| -rw-r--r-- | libraries/TFT/examples/Esplora/EsploraTFTGraph/EsploraTFTGraph.ino | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/libraries/TFT/examples/Esplora/EsploraTFTGraph/EsploraTFTGraph.ino b/libraries/TFT/examples/Esplora/EsploraTFTGraph/EsploraTFTGraph.ino new file mode 100644 index 0000000..24e0db6 --- /dev/null +++ b/libraries/TFT/examples/Esplora/EsploraTFTGraph/EsploraTFTGraph.ino @@ -0,0 +1,55 @@ +/* + + 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 <Esplora.h> +#include <TFT.h> // Arduino LCD library +#include <SPI.h> + +// 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); +} |