Merge pull request #656 from adafruit/TheKitty-patch-18

Create teensySNES_onebutton.ino

USB_SNES_Gamepad/teensySNES_onebutton/teensySNES_onebutton.ino

@@ -0,0 +1,53 @@
+const int pinBtnUp = 0;
+
+const int pinLEDOutput = 11;
+
+//Variables for the states of the SNES buttons
+boolean boolBtnUp;
+
+
+void setup()
+{
+  //Setup the pin modes.
+  pinMode( pinLEDOutput, OUTPUT );
+  //Special for the Teensy is the INPUT_PULLUP
+  //It enables a pullup resitor on the pin.
+  pinMode( pinBtnUp, INPUT_PULLUP );
+ 
+  //Zero the SNES controller button keys:
+  boolBtnUp = false;
+ 
+}
+
+
+void loop()
+{
+//  //debugging the start button...
+  digitalWrite ( pinLEDOutput, digitalRead(pinBtnUp));
+
+  //Progess the SNES controller buttons to send keystrokes.
+  fcnProcessButtons();
+  
+}
+
+//Function to process the buttons from the SNES controller
+void fcnProcessButtons()
+{
+  //Assign temporary values for the buttons.
+  //Remember, the SNES buttons are read as active LOW.
+  //Capture their status here:
+  boolean boolBtnUp = !digitalRead(pinBtnUp);
+ 
+  if ( boolBtnUp )
+  {
+    //Set key1 to the U key
+    Keyboard.set_key1( KEY_U );
+  } else {
+    Keyboard.set_key1( 0 );
+  }
+    
+  //Send all of the set keys.
+  Keyboard.send_now();
+
+
+}