Conner_305_0x01.py File Reference

Timer.channel(channel, mode, ...) More...

Namespaces
namespace	Lab_0x01
	: File enables a Nucleo to flash various signals on an LED.

Functions
def	Conner_305_0x01.onButtonPressFCN (IRQ_src)
	Determines when Nucleo Button has been pushed. More...
def	Conner_305_0x01.update_STW (Current_Time)
	Produces a sawtooth wave pattern. More...
def	Conner_305_0x01.update_SQW (Current_Time)
	Produces a square wave pattern. More...
def	Conner_305_0x01.update_SIN (Current_Time)
	Produces a Sin wave pattern. More...

Variables
int	Conner_305_0x01.button = 0
	Button Variable is used to indicate wheter the button has been pressed or not.
	Conner_305_0x01.pinA5 = pyb.Pin (pyb.Pin.cpu.A5)
	pinA5 is a variable to define the pin being used for the LED.
	Conner_305_0x01.pinC13 = pyb.Pin (pyb.Pin.cpu.C13)
	pinC13 is a variable to define the pin being used for the button.
	Conner_305_0x01.tim2 = pyb.Timer(2, freq = 20000)
	tim2 is a variable that defines the timing in which the LED will operate on.
	Conner_305_0x01.t2ch1 = tim2.channel(1, pyb.Timer.PWM, pin=pinA5)
	t2ch1 is a variable that sends power input to our pinA5 to light up the LED
	Conner_305_0x01.ButtonInt
	ButtonInt is a variable that determines when the button has been pressed. More...
int	Conner_305_0x01.state = 0
	State represents the numerical state the code is currently in.
int	Conner_305_0x01.run = 0
	run determines keeps track of how many times the code has been ran.
	Conner_305_0x01.startTime = utime.ticks_ms()
	statTime determines the time the LED patterns begin.
	Conner_305_0x01.stopTime = utime.ticks_ms()
	stopTime determines the current time of the iteration.
tuple	Conner_305_0x01.Current_Time = (utime.ticks_diff(stopTime, startTime)/1000)
	Current_Time determines how much time has passed since the startTime.

Detailed Description

Timer.channel(channel, mode, ...)

: File enables a Nucleo to flash various signals on an LED.

Author

: Wyatt Conner, James Lavelle

Date

: October 8, 2021

Function Documentation

onButtonPressFCN()

def Conner_305_0x01.onButtonPressFCN

(

IRQ_src

)

Determines when Nucleo Button has been pushed.

1.LED Flash Game This is a single file that is used to play a flash game, where pushing the button a nucleio will transition the different LED patterns. The patterns are as follows, sawtooth, square and sin wave.

This is our state transisiton diagram.

A video of the code running can be seen here:

Parameters

IRQ_src

This is an input variable retrieved from the nucleo that determines when the button is pressed.

Returns

Set a global variable "button" to 1, indicating the button has been pushed.

update_SIN()

def Conner_305_0x01.update_SIN

(

Current_Time

)

Produces a Sin wave pattern.

The function produces a sin wave based upon the MCU remainder time so naturally the frequncy of the sin wave is one second. The sin wave has an amplitude of 0.5 and is offset by 0.5, so that no negative numbers are ouput.

Parameters

Current_Time

The current time of the MCU, or how long the code has been running.

Returns

Will return a value from 0 to 100 in a sin wave pattern depending upon the remainder of the current time parameter.

update_SQW()

def Conner_305_0x01.update_SQW

(

Current_Time

)

Produces a square wave pattern.

The function creates a square wave pattern based upon the internal time of MCU. The output is 1 if time remainder is less than 0.5 and outputs 0 for greater than 0.5.

Parameters

Current_Time

The current time of the MCU, or how long the code has been running.

Returns

Will return a value of 0 or 100 depending upon the remainder value of the current time parameter.

update_STW()

def Conner_305_0x01.update_STW

(

Current_Time

)

Produces a sawtooth wave pattern.

The function creates a sawtooth wave pattern based upon the internal time of MCU, by outputing the time remainder divided by one.

Parameters

Current_Time

The current time of the MCU, or how long the code has been running.

Returns

Will return a value from 0 to 100 depending upon the decimal point of the time variable.

Variable Documentation

ButtonInt

Conner_305_0x01.ButtonInt

Initial value:

=  pyb.ExtInt(pinC13, mode=pyb.ExtInt.IRQ_FALLING,
                           pull=pyb.Pin.PULL_NONE, callback=onButtonPressFCN)

ButtonInt is a variable that determines when the button has been pressed.