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authorCristian Maglie <c.maglie@bug.st>2013-06-01 23:16:02 +0200
committerCristian Maglie <c.maglie@bug.st>2013-06-01 23:16:02 +0200
commit177ad96f866714a4962be57f69cd3d5a6334cde1 (patch)
tree1072239986340d6a239adac924eddf2e1d1ca566 /libraries/TFT/examples/Esplora/EsploraTFTEtchASketch
parent6cff36ac5e85c74bcb45cc53491ad69d64520b36 (diff)
parentd90fcca5839d13d57ed527d4009b78d22dafbde7 (diff)
Merge branch 'merge-1.0.5' into ide-1.5.x-discovery
Diffstat (limited to 'libraries/TFT/examples/Esplora/EsploraTFTEtchASketch')
-rw-r--r--libraries/TFT/examples/Esplora/EsploraTFTEtchASketch/EsploraTFTEtchASketch.ino83
1 files changed, 83 insertions, 0 deletions
diff --git a/libraries/TFT/examples/Esplora/EsploraTFTEtchASketch/EsploraTFTEtchASketch.ino b/libraries/TFT/examples/Esplora/EsploraTFTEtchASketch/EsploraTFTEtchASketch.ino
new file mode 100644
index 0000000..a1430d3
--- /dev/null
+++ b/libraries/TFT/examples/Esplora/EsploraTFTEtchASketch/EsploraTFTEtchASketch.ino
@@ -0,0 +1,83 @@
+/*
+
+ Esplora TFT EtchASketch
+
+ This example for the Arduino TFT and Esplora draws
+ a white line on the screen, based on the position
+ of the joystick. To clear the screen, shake the
+ Esplora, using the values from the accelerometer.
+
+ This example code is in the public domain.
+
+ Created 15 April 2013 by Scott Fitzgerald
+
+ http://arduino.cc/en/Tutorial/EsploraTFTEtchASketch
+
+ */
+
+#include <Esplora.h>
+#include <TFT.h> // Arduino LCD library
+#include <SPI.h>
+
+// initial position of the cursor
+int xPos = EsploraTFT.width()/2;
+int yPos = EsploraTFT.height()/2;
+
+void setup() {
+ // initialize the display
+ EsploraTFT.begin();
+
+ // clear the background
+ EsploraTFT.background(0,0,0);
+}
+
+void loop()
+{
+
+ int xAxis = Esplora.readJoystickX(); // read the X axis
+ int yAxis = Esplora.readJoystickY(); // read the Y axis
+
+ // update the position of the line
+ // depending on the position of the joystick
+ if (xAxis<10 && xAxis>-10){
+ xPos=xPos;
+ }
+ else{
+ xPos = xPos + (map(xAxis, -512, 512, 2, -2));
+ }
+ if (yAxis<10 && yAxis>-10){
+ yAxis=yAxis;
+ }
+ else{
+ yPos = yPos + (map(yAxis, -512, 512, -2, 2));
+ }
+
+// don't let the point go past the screen edges
+ if(xPos > 159){
+ (xPos = 159);
+ }
+
+ if(xPos < 0){
+ (xPos = 0);
+ }
+ if(yPos > 127){
+ (yPos = 127);
+ }
+
+ if(yPos < 0){
+ (yPos = 0);
+ }
+
+ // draw the point
+ EsploraTFT.stroke(255,255,255);
+ EsploraTFT.point(xPos,yPos);
+
+ // check the accelerometer values and clear
+ // the screen if it is being shaken
+ if(abs(Esplora.readAccelerometer(X_AXIS))>200 || abs(Esplora.readAccelerometer(Y_AXIS))>200){
+ EsploraTFT.background(0,0,0);
+ }
+
+ delay(33);
+}
+