50 lines
2.0 KiB
Arduino
50 lines
2.0 KiB
Arduino
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// An example sketch using the joystick library, demonstrating multiplexer support
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// In this example, we have 21 buttons we want to attach.
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// Unfortunately, the Arduino Uno only has 17 pins we can use!
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// So we've added an 8-channel multiplexer, connected to pins A1-A5.
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//
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// Note: this may not be the best approach for this many simple buttons. Using an input matrix
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// would require as few as 10 inputs in this scenario, for example. This is just a demo :)
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#include <Joystick.h>
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bool debug = false;
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Joystick joystick(debug);
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void setup() {
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// All of our digital pins and A0 are taken up with pushbuttons
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joystick.AddButton(2, BUTTON_PASSTHRU);
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joystick.AddButton(3, BUTTON_PASSTHRU);
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joystick.AddButton(4, BUTTON_PASSTHRU);
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joystick.AddButton(5, BUTTON_PASSTHRU);
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joystick.AddButton(6, BUTTON_PASSTHRU);
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joystick.AddButton(7, BUTTON_PASSTHRU);
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joystick.AddButton(8, BUTTON_PASSTHRU);
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joystick.AddButton(9, BUTTON_PASSTHRU);
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joystick.AddButton(10, BUTTON_PASSTHRU);
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joystick.AddButton(11, BUTTON_PASSTHRU);
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joystick.AddButton(12, BUTTON_PASSTHRU);
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joystick.AddButton(13, BUTTON_PASSTHRU);
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joystick.AddButton(A0, BUTTON_PASSTHRU);
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// to get more room for our inputs, we add an 8-bit multiplexer
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uint8_t mux = joystick.AddMux(A1, {A2, A3, A4, A5}, 4);
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// now we can add the rest of the buttons
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joystick.AddButton(A1, BUTTON_PASSTHRU, true, true, mux, 1); // the last parameter is which channel/pin the input is attached to on the multiplexer
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joystick.AddButton(A1, BUTTON_PASSTHRU, true, true, mux, 2);
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joystick.AddButton(A1, BUTTON_PASSTHRU, true, true, mux, 3);
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joystick.AddButton(A1, BUTTON_PASSTHRU, true, true, mux, 4);
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joystick.AddButton(A1, BUTTON_PASSTHRU, true, true, mux, 5);
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joystick.AddButton(A1, BUTTON_PASSTHRU, true, true, mux, 6);
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joystick.AddButton(A1, BUTTON_PASSTHRU, true, true, mux, 7);
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joystick.AddButton(A1, BUTTON_PASSTHRU, true, true, mux, 8);
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joystick.Init();
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}
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void loop() {
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// check all the button states and send any changes
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joystick.Update();
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}
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