DigitalOut

class DigitalOut

Public Functions

DigitalOut(PinName pin, PullType pull = PullType::PullNone, PinMode mode = PinMode::PushPull, PinSpeed speed = PinSpeed::Low, bool inverted = false)

Configures GPIO pin for digital in.

Parameters

  • pin: Pin def external to board

  • pull: Pin pull type

  • mode: Output mode (push-pull or open-drain)

  • speed: GPIO frequency

  • inverted: Inverts output value of pin

void DeInit()

Deinitializes the GPIO pin as a digital output.

void Write(bool state)

Change output state of pin.

Parameters

  • state: Set output value of pin (0 or 1) In open-drain 0 is high-z, 1 is drive low

void Toggle()

Toggle pin output.

bool Read()

Read current value of pin.

Return

true (high) or false (low)

void operator=(bool rhs)

Assignment operator overload to set pin value.

Parameters

  • rhs:

operator bool()

Boolean operator overload to set pin value.

Return

true

Return

false

Example Usage:

DigitalOut myLed(PIN_E5, PullNone, PushPull);

while(1)
{
    myLed.Toggle()
    Delay(100);
}

Note

Make sure that you have initialized the GPIO peripheral clock for your GPIO port before initializing the pin as an output.