An analog output, used for setting the voltage on a pin. More...

#include <AnalogOut.h>

Public Member Functions
	AnalogOut (PinName pin)
	Create an AnalogOut connected to the specified pin. More...

void	write (float value)
	Set the output voltage, specified as a percentage (float) More...

void	write_u16 (unsigned short value)
	Set the output voltage, represented as an unsigned short in the range [0x0, 0xFFFF]. More...

float	read ()
	Return the current output voltage setting, measured as a percentage (float) More...

AnalogOut &	operator= (float percent)
	An operator shorthand for write() More...

AnalogOut &	operator= (AnalogOut &rhs)
	An operator shorthand for write() More...

	operator float ()
	An operator shorthand for read() More...

virtual	~AnalogOut ()

Detailed Description

An analog output, used for setting the voltage on a pin.

Note: Synchronization level: Thread safe

Example:

// Make a sawtooth output
#include "mbed.h"
AnalogOut tri(p18);
int main() {
    while(1) {
        tri = tri + 0.01;
        wait_us(1);
        if(tri == 1) {
            tri = 0;
        }
    }
}

Definition at line 56 of file AnalogOut.h.

Constructor & Destructor Documentation

AnalogOut ( PinName pin )

Create an AnalogOut connected to the specified pin.

Parameters

pin	AnalogOut pin to connect to

Definition at line 64 of file AnalogOut.h.

virtual ~AnalogOut ( )

virtual

Deinitialize pin configuration.

Definition at line 126 of file AnalogOut.h.

Member Function Documentation

operator float ( )

An operator shorthand for read()

See also: AnalogOut::read()

Definition at line 120 of file AnalogOut.h.

AnalogOut& operator= ( float percent )

An operator shorthand for write()

See also: AnalogOut::write()

Definition at line 100 of file AnalogOut.h.

AnalogOut& operator= ( AnalogOut & rhs )

An operator shorthand for write()

See also: AnalogOut::write()

Definition at line 110 of file AnalogOut.h.

float read ( )

Return the current output voltage setting, measured as a percentage (float)

Returns: A floating-point value representing the current voltage being output on the pin, measured as a percentage. The returned value will lie between 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%).

Note: This value may not match exactly the value set by a previous write().

void write ( float value )

Set the output voltage, specified as a percentage (float)

Parameters

value A floating-point value representing the output voltage, specified as a percentage. The value should lie between 0.0f (representing 0v / 0%) and 1.0f (representing 3.3v / 100%). Values outside this range will be saturated to 0.0f or 1.0f.

void write_u16 ( unsigned short value )

Set the output voltage, represented as an unsigned short in the range [0x0, 0xFFFF].

Parameters

value 16-bit unsigned short representing the output voltage, normalized to a 16-bit value (0x0000 = 0v, 0xFFFF = 3.3v)

Public Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation

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