Component: Hall Effect Digital (Sensors)

Author	Matrix Ltd
Version	1.1 (Release)
Category	Sensors

Hall Effect Digital component

Simple digital hall effect on off switch triggered by the proximity of another object.

Examples

Sample program using the EBM011 - Hall Effect sensor

Reads the sensor and displays output on LED D7. EBM011 Example

Downloadable macro reference

ReadState

Get the current collision state.

The 'Polarity' property will affect whether a collision is represented by a high

or low state.

Parameters

This macro has no parameters

Return value

BYTE

WaitUntilHigh

Pause the program until the detector goes high.

'Polarity' will affect whether high value represents a collision or separation.

NB) In simulation, only use this macro if testing for collision with animated or

timer driven objects!!

Parameters

This macro has no parameters

Return value

This call does not return a value

WaitUntilLow

Pause the program until the detector goes low.

'Polarity' will affect whether low value represents a collision or separation.

NB) In simulation, only use this macro if testing for collision with animated or

timer driven objects!!

Parameters

This macro has no parameters

Return value

This call does not return a value

Simulation macro reference

SetTarget

Set the object that you want to test for collision with.

If this is not called, or is called with handle = 0, collisions will be tested against

every panel object that has 'Solid' status.

NB) Specifying an object will save CPU power!!

Parameters

HANDLE Target

The object to test for collision with.

Return value

This call does not return a value

Property reference

Pin

This property is of type Single digital pin and can be referenced with the variable name pin.

The chip pin that will receive the switch status.

Polarity

This property is of type Fixed list of ints and can be referenced with the variable name polarity.

Select the pin state that will indicate that an object has been detected.

Magnet Object

This property is of type Panel object and can be referenced with the variable name target.

Select an object from the panel to act as the magnet that triggers the reed switch.

Range

This property is of type Floating point and can be referenced with the variable name range.

Distance within which the switch is activated.

NB) This is measured between the centre of the proximity switch and the centre of the target object.

Timer Interval (ms)

This property is of type Unsigned integer and can be referenced with the variable name timer_int.

Time in milliseconds between testing for proximity.

Small time = Greater CPU load

Large time = More like to miss activation if it is very brief.