Component: Quadrature Encoder (General Input)

Author	Matrix TSL
Version	1.4
Category	General Input

Quadrature Encoder component

Quadrature Encoder component implements a rotary encoder connected to two pins. Quadrature Encoders provides incremental positioning rather than absolute positioning.

Detailed description

No detailed description exists yet for this component

Examples

Polling

Example program showing how to use a quadrature encoder component using a polling method. Quad_Encoder_Test

Timer Interrupt Based Polling

Example program showing how to use a quadrature encoder component using a polling method via a timer interrupt. Quad_Encoder_Timer

Interrupt On Change

Example program showing how to use a quadrature encoder component using a interrupt on pin state change interrupt (IOC). Quad_Encoder_IOC

Downloadable macro reference

	CheckForChanges
Polling function to check changes Returns 1 for chaged, 0 for no change, 255 for error
- BYTE	Return

	Disable
Disables the use of the quad encoder Once this ist called, the read functions will return zeros until the next Enable() call
- VOID	Return

	WriteCounter32
Sets the value of the internal count variable. Range: -2147483648 to 2147483647
[[File:]] -	Value
Range: -2147483648 to 2147483647
- VOID	Return

	Enable
Enables the use of the quad encoder If this is not called, the read functions will return zeros
- VOID	Return

	Rotate
Simulation Rotate function to allow accurate rotation during simulation. Automatically called by any attached coupling or gearbox component.
[[File:]] -	Angle
Amount to rotate the shaft input in degrees
- VOID	Return

	ReadCounter
Reads the current dial counter This is a counter from -32768 to 32767
[[File:]] -	Return

	WriteCounter
Sets the value of the internal count variable. Range: -32768 to 32767
[[File:]] -	Value
Range: -32768 to 32767
- VOID	Return

	ResetCounter
Resets the current dial counter to zero
- VOID	Return

	ReadCounter32
Reads the current dial counter as a 32-bit value This is a counter from -2147483648 to 2147483647
[[File:]] -	Return

	SpinRight
Spins the formula flowcode on the spot in a clockwise direction as seen from above.
- BYTE	Power
- VOID	Return

	CheckIR
Checks to see if a IR sensor is within the master threshold distance.
- BYTE	Sensor
- BYTE	Return

	ReadIRSensor
Reads the analogue value from the specified IR distance sensor.
- BYTE	Sensor
- UINT	Return

	SetMotors
Sets the speed and direction of the Formula Flowcode motors.
[[File:]] -	Left_Power
Valid Range = -255 to 255
[[File:]] -	Right_Power
Valid Range = -255 to 255
- VOID	Return

	Reverse
Drives both motors of the formula flowcode backwards with the power specified.
- BYTE	Power
- VOID	Return

	WaitForSwitch
Waits for the specified switch to be pressed.
- BYTE	Switch
- VOID	Return

	ReadLDR
Reads the current audio signal level from the on-board light sensor.
[[File:]] -	Return

	WriteLEDs
Allows control of all 8-LEDs on the front of the Formula Flowcode.
- BYTE	LED_Byte
- VOID	Return

	Initialise
Starts up the formula flowcode PWM for motor control and performs the wait for button press
- VOID	Return

	Initialise
The Init macro must be called once to initialise the Graphical LCD display before any other Graphical LCD component macros are called.
- VOID	Return

	Initialise
The Init macro must be called once to initialise the Graphical LCD display before any other Graphical LCD component macros are called.
- VOID	Return

	Initialise
The Init macro must be called once to initialise the Graphical LCD display before any other Graphical LCD component macros are called.
- VOID	Return

	Initialise
The Init macro must be called once to initialise the Graphical LCD display before any other Graphical LCD component macros are called.
- VOID	Return

	Initialise
Resets and initialises the Internet E-Block. It sets up the gateway address, subnet mask, device IP address and device MAC address as defined in the properties of the Flowcode component. This macro must be called before any other TCP_IP component macros
- VOID	Return

	Initialise
Resets and initialises the Internet E-Block. It sets up the gateway address, subnet mask, device IP address and device MAC address as defined in the properties of the Flowcode component. This macro must be called before any other TCP_IP component macros
- VOID	Return

	Initialise
Resets and initialises the Internet E-Block. It sets up the gateway address, subnet mask, device IP address and device MAC address as defined in the properties of the Flowcode component. This macro must be called before any other TCP_IP component macros
- VOID	Return

	MODPMSHAPE
Sets PM waveform shape to; 0 = SINE, 1 = SQUARE, 2 = RAMPUP, 3 = RAMPDN, 4 = TRIANG, 5 = NOISE, 6 = DC, 7 = SINC, 8 = EXPRISE, 9 = LOGRISE, 10 = ARB1, 11 = ARB2, 12 = ARB3, 13= ARB4.
- BYTE	Shape
Sets PM waveform shape (1 = SINE, 2 = SQUARE, 3 = RAMPUP, 4 = RAMPDN, 5 = TRIANG, 6 = NOISE, 7 = DC, 8 = SINC, 9 = EXPRISE, 10 = LOGRISE, 11 = ARB1, 12 = ARB2, 13 = ARB3, 14= ARB4).
- VOID	Return

	ARB4
Loads the binary-data to an existing arbitrary waveform memory location ARB4.
- BYTE	Waveform
- VOID	Return

	CLKSRRet
Returns the clock source <INT> or <EXT>.
[[File:]] -	Return

	MODPMDEV
Sets PM waveform deviation to <nrf> degrees. (Lower limit: -360° - Upper limit: 360°).
[[File:]] -	Degrees
Sets PM waveform deviation in degrees (-360 - 360).
- VOID	Return

	MSTLOCK
Sends signal to SLAVE generator to get synchronised
- VOID	Return

	HILVL
Sets the amplitude-high-level to <nrf> Volts. (Lower limit: -0.490 V - Upper limit: 5.000 V).
[[File:]] -	HighLevel
Sets the amplitude-high-level in Volts(V) (-0.490 V - 5.000 V).
- VOID	Return

	ARB3
Loads the binary-data to an existing arbitrary waveform memory location ARB3.
- UINT	Waveform
- VOID	Return

	WAVE
Sets the waveform type. 0 = SINE, 1 = SQUARE, 2 = RAMP, 3 = TRIANG, 4 = PULSE, 5 = NOISE, 6 = ARB
- BYTE	WaveType
0 = SINE, 1 = SQUARE, 2 = RAMP, 3 = TRIANG, 4 = PULSE, 5 = NOISE, 6 = ARB.
- VOID	Return

	CALADJ
Adjust the selected calibration value by <nrf> (Lower limit: -100 - Upper limit: 100).
[[File:]] -	Calibrate
Adjust the selected calibration value (-100 - 100).
- VOID	Return

	STBRet
Returns the value of the Status Byte Register in <nr1> numeric format.
- BYTE	Return

	ARB2
Loads the binary-data to an existing arbitrary waveform memory location ARB2.
- UINT	Waveform
- VOID	Return

	EERRet
Query and clear execution error number register.
- STRING	Return

	MODFMSRC
Sets FM waveform source to; 0 INT, 1 = EXT.
[[File:]] -	Source
Sets FM waveform source (0 = INT, 1 = EXT).
- VOID	Return

	MODAMFREQ
Sets AM waveform frequency to <nrf> Hz. (Lower limit: 1uHz - Upper limit: 20kHz).
[[File:]] -	Frequency
Sets AM waveform frequency in Hertz(Hz) (1uHz - 20kHz).
- VOID	Return

	ESE
Sets the Standard Event Status Enable Register to the value of <nrf>.
- BYTE	Value
Value of register 0-255
- VOID	Return

	ARB1
Loads the binary-data to an existing arbitrary waveform memory location ARB1.
- UINT	Waveform
16 Bit binary number for arbitrary waveform.
- VOID	Return

	ARB4DEFRet
Returns user specified waveform name, waveform pint interpolation state and waveform length of ARB4.
- STRING	Return

	CLS
Clears status byte register of the interface.
- VOID	Return

	MSTRELOCK
Resynchronises the two generators in MASTER-SLAVE mode.
- VOID	Return

	NOISLVL
Sets the output noise level to <nr1> %. (Lower limit: 0% - Upper limit: 50%)
- BYTE	Percent
Sets the output noise level in percent. (0 - 50)
- VOID	Return

	LOCKMODE
Sets the synchronising mode to; 0 = MASTER, 1 = SLAVE, 2 = INDEP.
- BYTE	Mode
Sets the synchronising mode (0 = MASTER, 1 = SLAVE, 2 = INDEP).
- VOID	Return

	ADDRESSRet
Returns the instruments address
[[File:]] -	Return

	MODPMSRC
Sets PM waveform source to; 0 INT, 1 = EXT.
[[File:]] -	Source
Sets PM waveform source (0 = INT, 1 = EXT).
- VOID	Return

	MODPWMSRC
Sets PWM waveform source to; 0 = INT, 1 = EXT.
[[File:]] -	Source
Sets PWM waveform source (0 = INT, 1 = EXT).
- VOID	Return

	MOD
Sets modulation to; 0 = OFF, 1 = AM, 2 = FM, 3 = PM, 4 = FSK, 5 = PWM.
- BYTE	Modulation
Sets modulation (0 = OFF, 1 = AM, 2 = FM, 3 = PM, 4 = FSK, 5 = PWM).
- VOID	Return

	ISTRet
Returns IST local message as defined by IEEE Std. 488.2. The syntax of the response is 0<rmt>, if the local message is false, or 1<rmt>, if the local message is true.
[[File:]] -	Return

	LRNRet
Returns the complete setup of the instrument as a binary data block
[[File:]] -	Return

	OPCRet
Query Operation Complete status. The response is always 1<rmt> and will be available immediately the command is executed because all commands are sequential.
[[File:]] -	Return

	SWPTYPE
Sets the sweep type to; 0 = LINUP, 1 = LINDN, 2 = LINUPDN, 3 = LINDNUP, 4 = LOGUP, 5 = LOGDN, 6 = LOGUPDN, 7 = LOGDNUP.
- BYTE	Type
Set the sweep type (0 = LINUP, 1 = LINDN, 2 = LINUPDN, 3 = LINDNUP, 4 = LOGUP, 5 = LOGDN, 6 = LOGUPDN, 7 = LOGDNUP).
- VOID	Return

	PULSRANGE
Sets PWM waveform source to <1>, <2> or <3>; 1 = 1, 2 = 2, 3 = 3.
- BYTE	Range
Sets the pulse rise and fall range. (1, 2 or 3)
- VOID	Return

	TSTRet
The generator has no self test capability and the response is always 0 <rmt>.
[[File:]] -	Return

	BSTTRGPOL
Sets the burst trigger slope to; 0 = POS, 1 = NEG.
[[File:]] -	Slope
Set the burst trigger slope (0 = POS, 1 = NEG).
- VOID	Return

	ARB3Ret
Returns the binary-data from an existing abbitrary wavefrom memory location.
- UINT	Return

	BSTPHASE
Sets the burst phase to <nrf> degrees. (Lower limit: -360 - Upper limit: 360)
[[File:]] -	Degrees
Sets the burst phase in degrees (-360 - 360)
- VOID	Return

	IDNRet
Returns the instrument identification. The IDN is saved to the variable passed from the function 'ReturnIDN'. The return parameter is TRUE when the IDN is successfully returned.
- STRING	ReturnIDN
- STRING	Return

	SWPTRGPER
Sets the sweep trigger period to <nrf> seconds
[[File:]] -	Seconds
Set the sweep trigger period in seconds.
- VOID	Return

	PULSDLY
Sets the waveform delay to <nrf> sec
[[File:]] -	Sec
- VOID	Return

	Initialise
Opens the COM port ready for communications.
- VOID	Return

Property reference

	Properties
	Variable Type
Selects the size of the encoder count variable depending on the number of encoder counts required to be stored. The 16 bit variable counter is accessed via the ReadCounter and WriteCounter functions. The 32 bit variable counter is accessed via the ReadCounter32 and WriteCounter32 functions.
	Post Scaler
Encoders with a mechanical click will often have 4 transitions per click. 1:1 would provide the maximum output resolution. 1:4 would provide the encoder click count.
	Edges Per Revolution
Number of signal transitions per revolution. E.g. for a 360 degree encoder you would likely get 360 x 4 = 1440 transitions and an accuracy of 0.25 degrees.
	Resolution
The resolution of the encoder in degrees
	Connections
	A
Input pin A
	B
Input Pin B
	Simulations
	Repeat Rate
Simulated repeat rate when clicking and rotating the encoder
	Rotation Increment
Number of degrees to rotate when performing a single quadrature pin transition.
	Scope Traces