ME405_FP_ResTP.ResTP Class Reference

Runs operations and returns values specific to the encoder count. More...

Public Member Functions
def	__init__ (self, pin0, pin1, pin6, pin7)
	Assign a pin to each Cartesian coordinate variable (one per sign) More...
def	x_scan (self)
	Relays positional information in the x-direction. More...
def	y_scan (self)
	Relays positional information in the y-direction. More...
def	z_scan (self)
	Detects whether or not an object is in contact with the platform. More...
def	runScan (self)
	Runs the scan methods and stores the readings in a tuple. More...

Public Attributes
	l_p
	w_p
	cntr_p
	x_calib
	Sets the pin to ADC mode and stores the values in the variable "adc" self.adc_XZ = pyb.ADC(self.pin0) # instantiatiing the ADC class with an object self.adc_Y = pyb.ADC(self.pin1)
	y_calib
	x_scale
	y_scale

Static Public Attributes
	pin0 = None
	pin1 = None
	pin6 = None
	pin7 = None
int	l_p = 0
int	w_p = 0
list	cntr_p = [0, 0]
float	splyVlt = 3.3

Detailed Description

Runs operations and returns values specific to the encoder count.

Class for updating, getting, setting, and computing the change in the encoder count.

Constructor & Destructor Documentation

__init__()

def ME405_FP_ResTP.ResTP.__init__	(		self,
			pin0,
			pin1,
			pin6,
			pin7
	)

Assign a pin to each Cartesian coordinate variable (one per sign)

The initialization also includes calibrating the touch panel so that results start from (0,0), and priming the pins so that they read in ADC mode, which will allow us to interpret voltage differences that indicate the presence of an object

Member Function Documentation

runScan()

def ME405_FP_ResTP.ResTP.runScan

(

self

)

Runs the scan methods and stores the readings in a tuple.

Returns

Tuple_ScanVal The value of the x-, y-, and z-scans as quickly as the touch panel cycles

x_scan()

def ME405_FP_ResTP.ResTP.x_scan

(

self

)

Relays positional information in the x-direction.

By detecting voltage changes (via ADC method) brought about by the contact of two paths of wires oriented vertically to one another, the position of an object on the platform in the x-direction can be detected.

Returns

x_pos*self.x_scale The x-position scaled to place (0,0) at the platforms center

y_scan()

def ME405_FP_ResTP.ResTP.y_scan

(

self

)

Relays positional information in the y-direction.

Delivers y-position information of a object on the touch panel using an identical conversion of voltage to count via an ADC pin as the x-scan method.

Returns

y_pos*self.y_scale The y-position scaled to place (0,0) at the platforms center

z_scan()

def ME405_FP_ResTP.ResTP.z_scan

(

self

)

Detects whether or not an object is in contact with the platform.

Uses the voltage to count conversion via ADC, but employs it to ensure there is contact with the touch panel. The panel is set to read high, therefore when a count value is detected that is below the max count multiplied by some FOS, this implies that contact with the panel is present.

Returns

A boolean True/False to indicate whether there is contact with the panel

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

• ME405_FP_ResTP.py