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authorCristian Maglie <c.maglie@bug.st>2013-08-08 16:43:19 +0200
committerCristian Maglie <c.maglie@bug.st>2013-08-08 16:43:19 +0200
commita8193ed933d9c9954cefbfb541cde56770ab5b74 (patch)
tree80796833fecca5d7426f1d09f7ac9870bab5f062 /libraries/Robot_Control/examples/explore/R04_Compass/R04_Compass.ino
parenta4c9fee673342304a5b12f7f2f7f9ecb9cb26d30 (diff)
parent5527c44aa443b20d63cf7a276180a36695233924 (diff)
Merge branch 'ide-1.5.x-library-to-new-format' into ide-1.5.x
Diffstat (limited to 'libraries/Robot_Control/examples/explore/R04_Compass/R04_Compass.ino')
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diff --git a/libraries/Robot_Control/examples/explore/R04_Compass/R04_Compass.ino b/libraries/Robot_Control/examples/explore/R04_Compass/R04_Compass.ino
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--- a/libraries/Robot_Control/examples/explore/R04_Compass/R04_Compass.ino
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-/* Robot Compass
-
- The robot has an on-board compass module, with
- which it can tell the direction the robot is
- facing. This sketch will make sure the robot
- goes towards a certain direction.
-
- Beware, magnets will interfere with the compass
- readings.
-
- Circuit:
- * Arduino Robot
-
- created 1 May 2013
- by X. Yang
- modified 12 May 2013
- by D. Cuartielles
-
- This example is in the public domain
- */
-
-// include the robot library
-#include <ArduinoRobot.h>
-
-int speedLeft;
-int speedRight;
-int compassValue;
-int direc = 180; //Direction the robot is heading
-
-void setup() {
- // initialize the modules
- Robot.begin();
- Robot.beginTFT();
- Robot.beginSD();
- Robot.displayLogos();
-}
-
-void loop() {
- // read the compass orientation
- compassValue = Robot.compassRead();
-
- // how many degrees are we off
- int diff = compassValue-direc;
-
- // modify degress
- if(diff > 180)
- diff = -360+diff;
- else if(diff < -180)
- diff = 360+diff;
-
- // Make the robot turn to its proper orientation
- diff = map(diff, -180, 180, -255, 255);
-
- if(diff > 0) {
- // keep the right wheel spinning,
- // change the speed of the left wheel
- speedLeft = 255-diff;
- speedRight = 255;
- } else {
- // keep the right left spinning,
- // change the speed of the left wheel
- speedLeft = 255;
- speedRight = 255+diff;
- }
- // write out to the motors
- Robot.motorsWrite(speedLeft, speedRight);
-
- // draw the orientation on the screen
- Robot.drawCompass(compassValue);
-}