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InterruptIn Class Reference
Public Member Functions

InterruptIn Class Reference
[Drivers]

A digital interrupt input, used to call a function on a rising or falling edge. More...

#include <InterruptIn.h>

Public Member Functions

 InterruptIn (PinName pin)
 Create an InterruptIn connected to the specified pin.
int read ()
 Read the input, represented as 0 or 1 (int)
 operator int ()
 An operator shorthand for read()
void rise (Callback< void()> func)
 Attach a function to call when a rising edge occurs on the input.
template<typename T , typename M >
 MBED_DEPRECATED_SINCE ("mbed-os-5.1","The rise function does not support cv-qualifiers. Replaced by ""rise(callback(obj, method)).") void rise(T *obj
 Attach a member function to call when a rising edge occurs on the input.
void fall (Callback< void()> func)
 Attach a function to call when a falling edge occurs on the input.
template<typename T , typename M >
 MBED_DEPRECATED_SINCE ("mbed-os-5.1","The fall function does not support cv-qualifiers. Replaced by ""fall(callback(obj, method)).") void fall(T *obj
 Attach a member function to call when a falling edge occurs on the input.
void enable_irq ()
 Enable IRQ.
void disable_irq ()
 Disable IRQ.

Detailed Description

A digital interrupt input, used to call a function on a rising or falling edge.

Synchronization level: Interrupt safe

Example: 

 // Flash an LED while waiting for events

 #include "mbed.h"

 InterruptIn event(p16);
 DigitalOut led(LED1);

 void trigger() {
     printf("triggered!\n");
 }

 int main() {
     event.rise(&trigger);
     while(1) {
         led = !led;
         wait(0.25);
     }
 }

Definition at line 59 of file InterruptIn.h.

Constructor & Destructor Documentation

InterruptIn ( PinName  pin )

Create an InterruptIn connected to the specified pin.

Parameters:
pinInterruptIn pin to connect to
name(optional) A string to identify the object

Definition at line 24 of file InterruptIn.cpp.

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