TTP223 Class Reference

API for the TTP223 Touch Sensor. More...

Detailed Description

• ID: ttp223
• Name: TTP223 Touch Sensor
• Other Names: Grove Touch Sensor
• Category: touch
• Manufacturer: seeed
• Link: http://www.seeedstudio.com/depot/Grove-Touch-Sensor-p-747.html
• Connection: gpio

This touch sensor detects when a finger is near the metallic pad by the change in capacitance. It can replace a more traditional push button. The touch sensor can still function when placed under a non-metallic surface like glass or plastic.

        upm_ttp223.TTP223 touch = new upm_ttp223.TTP223(7);

        while (true) {
            if (touch.isPressed())
                System.out.println(touch.name() + " is pressed");
            else
                System.out.println(touch.name() + " is not pressed");

            Thread.sleep(1000);
        }

Public Member Functions
synchronized void	delete ()
	TTP223 (long pin)
String	name ()
int	value ()
boolean	isPressed ()
void	installISR (int level, IsrCallback cb)
void	uninstallISR ()

Constructor & Destructor Documentation

TTP223

(

long

pin

)

TTP223 constructor

Parameters

pin	GPIO pin where the sensor is connected

Member Function Documentation

void installISR	(	int	level,
		IsrCallback	cb
	)

Installs an interrupt service routine (ISR) to be called when the button is activated or deactivated.

Parameters

fptr	Pointer to a function to be called on interrupt
arg	Pointer to an object to be supplied as an argument to the ISR.

boolean isPressed

(

)

Determines whether the touch sensor is being touched

Returns

True if touched, false otherwise

String name

(

)

Returns the name of this sensor

Returns

Name of this sensor

void uninstallISR

(

)

Uninstalls the previously installed ISR

int value

(

)

Gets the value from the GPIO pin

Returns

Value from the GPIO pin

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The documentation for this class was generated from the following file:

• /var/lib/jenkins/workspace/upm-doc-stable/build-33/src/ttp223/TTP223.java