A multiple pin digital input. More...

#include <PortIn.h>

Public Member Functions
	PortIn (PortName port, int mask=0xFFFFFFFF)
	Create a PortIn, connected to the specified port. More...

int	read ()
	Read the value input to the port. More...

void	mode (PinMode mode)
	Set the input pin mode. More...

	operator int ()
	A shorthand for read() More...

Detailed Description

A multiple pin digital input.

Note: Synchronization level: Interrupt safe

Example:

// Turn on an LED if any pins of Port2[0:5] are high
#include "mbed.h"
PortIn     p(Port2, 0x0000003F);  // Port2 pins [0:5] only
DigitalOut led(LED4);
int main() {
    while(1) {
        int pins = p.read();
        if(pins) {
            led = 1;
        } else {
            led = 0;
        }
    }
}

Definition at line 58 of file PortIn.h.

Constructor & Destructor Documentation

PortIn	(	PortName	port,
		int	mask = `0xFFFFFFFF`
	)

Create a PortIn, connected to the specified port.

Parameters

port	Port to connect to (as defined in target's PortNames.h)
mask	Bitmask defines which port pins should be an input (0 - ignore, 1 - include)

Member Function Documentation

void mode ( PinMode mode )

Set the input pin mode.

Parameters

mode	PullUp, PullDown, PullNone, OpenDrain

operator int ( )

A shorthand for read()

Definition at line 86 of file PortIn.h.

int read ( void )

Read the value input to the port.

Returns: An integer with each bit corresponding to the associated pin value

Definition at line 73 of file PortIn.h.

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

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