touchPanelDriver.touchPanelDriver Class Reference

Position finder for the ball. More...

Public Member Functions
def	__init__ (self, debugFlag=True, xm=Pin.cpu.A1, xp=Pin.cpu.A7, ym=Pin.cpu.A0, yp=Pin.cpu.A6, boardLength=const(176), boardWidth=const(107), centerXPos=const(88), centerYPos=const(53))
	Create an encoder object to find position and speeds. More...
def	allPositions (self)
	Optimally return the position of the ball in 3 coordinates. More...
def	getXPos (self)
	Get the X position of the ball. More...
def	getYPos (self)
	Get the Y position of the ball. More...
def	getZPos (self)
	Use the Z position to determine if the ball is touching. More...
def	calibration (self)
	Calibrate the board for position. More...

Public Attributes
	debugFlag
	Debugging flag for detailed analysis while running.
	xm
	Pin object for the negative x direction circuit.
	xp
	Pin object for the positive x direction circuit.
	ym
	Pin object for the negative y direction circuit.
	yp
	Pin object for the positive y direction circuit.
	boardLength
	Length of the board (x direction) in mm.
	boardWidth
	Length of the board (y direction) in mm.
	centerXPos
	Center coordinate (x direction) in mm.
	centerYPos
	Center coordinate (y direction) in mm.
	xmPin
	definition of pyb.Pin object for xm (x minus)
	xpPin
	definition of pyb.Pin object for xp (x plus)
	ymPin
	definition of pyb.Pin object for ym (y minus)
	ypPin
	definition of pyb.Pin object for yp (y plus)
	ymADC
	Analog to digital converter for determining x and z positions.
	XPos
	x-position of the ball in millimeters
	xmADC
	Analog to digital converter for determining y position.
	YPos
	y-position of the ball in millimeters
	ZPos
	z-position of the ball More...

Detailed Description

Position finder for the ball.

This class will allow for the position and velocity of the ball to be calculated using the resisive touch pad.

Constructor & Destructor Documentation

__init__()

def touchPanelDriver.touchPanelDriver.__init__	(		self,
			debugFlag = True,
			xm = Pin.cpu.A1,
			xp = Pin.cpu.A7,
			ym = Pin.cpu.A0,
			yp = Pin.cpu.A6,
			boardLength = const(176),
			boardWidth = const(107),
			centerXPos = const(88),
			centerYPos = const(53)
	)

Create an encoder object to find position and speeds.

This object will be called in order to find the current positions of the ball, or to calibrate the pad.

Parameters

debugFlag	Enables or prevents certain print statements from appearing.
xm	The pin associated with the negative x terminal of the resistive pad.
xp	The pin associated with the positive x terminal of the resistive pad.
ym	The pin associated with the negative y terminal of the resistive pad.
yp	The pin associated with the positive y terminal of the resistive pad.
boardLength	The length of the long side of the board in mm
boardWidth	The width of the short side of the board in mm
centerXPos	The horizontal distance from the edge of the board to the center, which should be about half the boardLength
centerYPos	The vertical distance from the edge of the board to the center, which should be about half the boardWidth

Member Function Documentation

allPositions()

def touchPanelDriver.touchPanelDriver.allPositions

(

self

)

Optimally return the position of the ball in 3 coordinates.

This method gets the x and y positions of the ball as well as the the 'z' coordinate, which will tell whether the platform has something on it. The order is run by getting X, then Z, then Y in order to reduce the number of pin-switching. This should produce a fast enough response to accurately run the controller (under 500 microseconds).

calibration()

def touchPanelDriver.touchPanelDriver.calibration

(

self

)

Calibrate the board for position.

This method allows the user to calibrate the board since the resistive touch panel is not perfect. The data will then be used to find the position of the ball for the rest of the driver. This method is utilized by the touchPanelCalibration_main.py file to run multiple tests and perform averaging to get better data.

getXPos()

def touchPanelDriver.touchPanelDriver.getXPos

(

self

)

Get the X position of the ball.

This method gets the x position of the ball from reading the details given from the resistive touch panel.

getYPos()

def touchPanelDriver.touchPanelDriver.getYPos

(

self

)

Get the Y position of the ball.

This method gets the y position of the ball from reading the details given from the resistive touch panel.

getZPos()

def touchPanelDriver.touchPanelDriver.getZPos

(

self

)

Use the Z position to determine if the ball is touching.

This method gets the z position of the ball from reading the details given from the resistive touch panel. A "True" means the ball is on the platform.

Member Data Documentation

ZPos

touchPanelDriver.touchPanelDriver.ZPos

z-position of the ball

True if the ball is on the platform, and False if the ball is not on the platform

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

• touchPanelDriver.py