RODigitalIO¶
RODigitalIO provides access to the digital pins on your RobotOpen board. Pins can either be configured as inputs or outputs. When a pin is configured as an input, it will be read as either a high or low state. When configured as an output, the pin can be set either high or low. A low state will generate a voltage of 0V. A high state will generate a 5V signal on that pin.
Constructor¶
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RODigitalIO(uint8_t channel, uint8_t mode)
Creates an RODigitalIO instance with the given digital channel (the first channel typically being 0). The second parameter can either be INPUT or OUTPUT.
Functions¶
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void
on
()¶ OUTPUT only. Toggle the OUTPUT high.
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void
off
()¶ OUTPUT only. Toggle the OUTPUT low.
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boolean
read
()¶ INPUT only. Returns true if the input read is high, otherwise returns false.
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void
pullUp
()¶ INPUT only. Uses the Arduino’s internal pull-up resistor to drive the line to 5V by default.
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void
allowFloat
()¶ INPUT only. Disables the pullup resistor, if enabled.
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void
setMode
(uint8_t mode)¶ Change the mode of the digital pin. Can be either INPUT or OUTPUT.
Examples¶
// create some objects
RODigitalIO redLED(3, OUTPUT);
RODigitalIO blueButton(2, INPUT);
// output calls
redLED.on();
// input calls
blueButton.pullUp();
bool is_held = blueButton.read();
blueButton.allowFloat();
// make blueButton an output
blueButton.setMode(OUTPUT);