touchpanel.touchpanel Class Reference

A resistive touchpanel class. More...

Public Member Functions
def	__init__ (self)
	Initializes and returns an object associated with a resistive touch panel. More...
def	pos_update (self)
	Updates positional data of touchpanel. More...
def	scan_x (self)
	Individually scans the x position. More...
def	scan_y (self)
	Individually scans the y position. More...
def	scan_z (self)
	Individually scans the z position. More...

Public Attributes
	z_pos
	create object z_pos for the z position for touchpanel More...
	timer
	creates a timer object tim using the Timer method More...
	x_p
	creates a pin object x_p set to More...
	x_m
	creates a pin object x_m set to More...
	y_p
	creates a pin object y_p set to More...
	y_m
	creates an ADC object y_m acting on a pin More...
	x_buf
	creates an array object x_buf More...
	y_buf
	creates an array object y_buf More...
	z_buf
	creates an array object z_buf More...
	position
	creates a position object list of positions More...

Static Public Attributes
	x_pos
	create object x_pos for the x position for touchpanel More...
	y_pos
	create object y_pos for the y position for touchpanel More...

Detailed Description

A resistive touchpanel class.

Objects of this class can be used to iteratively read the x- and y-locations of applied pressure on a four wire resistive touchpanel. Additionally, detects whether or not there is no pressure input on the panel ('z-location')

Constructor & Destructor Documentation

__init__()

def touchpanel.touchpanel.__init__

(

self

)

Initializes and returns an object associated with a resistive touch panel.

Upon initialization, sets all base objects to 0 and or respective pins.The objects of this class are instantiated at 0 and then overwritten when the different methods are called.

Member Function Documentation

pos_update()

def touchpanel.touchpanel.pos_update

(

self

)

Updates positional data of touchpanel.

Upon calling the pos_update() method, scans x, y, and z positions by sets and resets the pins to OUT_PP and IN for measuring.

scan_x()

def touchpanel.touchpanel.scan_x

(

self

)

Individually scans the x position.

Upon calling the scan_x() method, the x position can be individually scanned. This is already implemented in the pos_update method to run more efficiently, but for comprehension, this method was also included.

scan_y()

def touchpanel.touchpanel.scan_y

(

self

)

Individually scans the y position.

Upon calling the scan_y() method, the y position can be individually scanned. This is already implemented in the pos_update method to run more efficiently, but for comprehension, this method was also included.

scan_z()

def touchpanel.touchpanel.scan_z

(

self

)

Individually scans the z position.

Upon calling the scan_z() method, the z position can be individually scanned. This is already implemented in the pos_update method to run more efficiently, but for comprehension, this method was also included.

Member Data Documentation

position

touchpanel.touchpanel.position

creates a position object list of positions

position list in the order of x position, y position, and z position.

timer

touchpanel.touchpanel.timer

creates a timer object tim using the Timer method

Timer object PWM_tim passed in by user for the timer at a preset frequency of 100_000

x_buf

touchpanel.touchpanel.x_buf

creates an array object x_buf

x_buf is an array of length 25 populated with 0's

x_m

touchpanel.touchpanel.x_m

creates a pin object x_m set to

pin used to connect pin A1 configured for output with OUT_PP

x_p

touchpanel.touchpanel.x_p

creates a pin object x_p set to

pin used to connect pin A7 configured for output with OUT_PP

x_pos

touchpanel.touchpanel.x_pos

static

create object x_pos for the x position for touchpanel

the x object is initially set to 0 but then changed to the updated values of the registered x position when different methods are run.

y_buf

touchpanel.touchpanel.y_buf

creates an array object y_buf

y_buf is an array of length x_buf populated with 0's

y_m

touchpanel.touchpanel.y_m

creates an ADC object y_m acting on a pin

pin used to connect pin A0

y_p

touchpanel.touchpanel.y_p

creates a pin object y_p set to

pin used to connect pin A6 configured for output with IN

y_pos

touchpanel.touchpanel.y_pos

static

create object y_pos for the y position for touchpanel

the y object is initially set to 0 but then changed to the updated values of the registered y position when different methods are run.

z_buf

touchpanel.touchpanel.z_buf

creates an array object z_buf

z_buf is an array of length x_buf populated with 0's

z_pos

touchpanel.touchpanel.z_pos

create object z_pos for the z position for touchpanel

the z direction for the touchpanel is used to indicate if there is contact with the board. When z_pos = 0, contact with the board is not registered. When z_pos = 1, contact with the board is registered

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

• Lab 0xFF/touchpanel.py