tch_driver.touchscreen Class Reference

Public Member Functions
def	__init__ (self, xp, xm, yp, ym, w, l, xc, yc)
	Constructor for the touchscreen driver. More...
def	Xscan (self)
	Returns the x coordinate of the touch input.
def	Zscan (self)
	Returns a boolean output which measures if there is any input to the touchscreen.
def	Yscan (self)
	Returns the y coordinate of the touch input.
def	coord (self)
	Returns the coordinates of the touch input and the time it takes to calculate. More...

Public Attributes
	xp
	An object copy of the X+ pin.
	xm
	An object copy of the X- pin.
	yp
	An object copy of the Y+ pin.
	ym
	An object copy of the Y- pin.
	w
	An object copy of the width of the touchscreen.
	l
	An object copy of the length of the touchscreen.
	xc
	An object copy of the X coordinate of the center of the touchscreen.
	yc
	An object copy of the Y coordinate of the center of the touchscreen.
	Xi
	Initializes the first X reading for the filter.
	Yi
	Initializes the first Y reading for the filter. More...
	ADC_ym

Constructor & Destructor Documentation

__init__()

def tch_driver.touchscreen.__init__	(		self,
			xp,
			xm,
			yp,
			ym,
			w,
			l,
			xc,
			yc
	)

Constructor for the touchscreen driver.

Parameters

xp	Input for the X+ pin on the FPC breakout board.
xm	Input for the X- pin on the FPC breakout board.
yp	Input for the Y+ pin on the FPC breakout board.
ym	Input for the Y- pin on the FPC breakout board.
w	Input for the width of the board in centimeters.
l	Input for the length of the board in centimeters.
xc	Input for the X coordinate of the center of the touchscreen.
yc	Input for the Y coordinate of the center of the touchscreen.

Member Function Documentation

coord()

def tch_driver.touchscreen.coord

(

self

)

Returns the coordinates of the touch input and the time it takes to calculate.

The coordinate system is returned in the format of (X, Y, Z). X and Y will be in the units specified by the given length and width and Z will be a boolean output which determines whether the touchscreen is being pressed. Z=1 means no input and Z=0 means an input is read. Additionally, this method returns total_time which is the total time it takes to run through the method returned in microseconds.

Member Data Documentation

Yi

tch_driver.touchscreen.Yi

Initializes the first Y reading for the filter.

Push Pull Output Pins initialized in Zscan() self.pin_yp = Pin(self.yp) self.pin_yp.init(mode=Pin.OUT_PP, value=1)

Floating Pins initialized in Zscan() self.pin_xp = Pin(self.xp, mode=Pin.IN) self.pin_xp.init(mode=Pin.ANALOG)

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

• tch_driver.py