CMPT401_TWU

Lab Report 2 - LED’s and Push Buttons

26-09-2023

Jonah Watts

Table Of Contents:

  1. Assignment Project #1
  2. Assignment Project #2

Assignment Project #1

Task Description:

To create a program will send a streak of light down the LED bar depending on what button is pressed

Hardware Components:

Circut Diagrams

Photo(s) of the breadboard:

Source Code

The Source code can be downloaded here here

#---------------------------------------------------------
# Jonah Watts 
# Assignment 2, Project 1
# For CMPT 401
#---------------------------------------------------------

# First import the libraries needed
from machine import Pin, PWM
import time

# Using the given code for power managements from the tutourial and modifying it
class myPWM():
    def __init__(self, pwm0: int=15, pwm1: int=2, pwm2: int=0, pwm3: int=4, pwm4: int=5, pwm5: int=18, pwm6: int=19, pwm7: int=21, pwm8: int=22, pwm9: int=23):
        self._pwm0=PWM(Pin(pwm0),10000)
        self._pwm1=PWM(Pin(pwm1),10000)
        self._pwm2=PWM(Pin(pwm2),10000)
        self._pwm3=PWM(Pin(pwm3),10000)
        self._pwm4=PWM(Pin(pwm4),10000)
        self._pwm5=PWM(Pin(pwm5),10000)
        self._pwm6=PWM(Pin(pwm6),10000)
        self._pwm7=PWM(Pin(pwm7),10000)
        self._pwm8=PWM(Pin(pwm8),10000)
        self._pwm9=PWM(Pin(pwm9),10000)
        
    def ledcWrite(self,chn,value):
        if chn==0:
            self._pwm0.duty(value)
        elif chn==1:
            self._pwm1.duty(value)
        elif chn==2:
            self._pwm2.duty(value)
        elif chn==3:
            self._pwm3.duty(value)
        elif chn==4:
            self._pwm4.duty(value)
        elif chn==5:
            self._pwm5.duty(value)
        elif chn==6:
            self._pwm6.duty(value)
        elif chn==7:
            self._pwm7.duty(value)
        elif chn==8:
            self._pwm8.duty(value)
        elif chn==9:
            self._pwm9.duty(value)
    
    def deinit(self):
        self._pwm0.deinit()
        self._pwm1.deinit()
        self._pwm2.deinit()
        self._pwm3.deinit()
        self._pwm4.deinit()
        self._pwm5.deinit()
        self._pwm6.deinit()
        self._pwm7.deinit()
        self._pwm8.deinit()
        self._pwm9.deinit()
        
# Setup the Pins and assign them what led they control
mypwm = myPWM(15,2,0,4,5,18,19,21,22,23)
chns=[0,1,2,3,4,5,6,7,8,9];
dutys=[0,0,0,0,0,0,0,0,0,1023,512,256,128,64,32,16,8,0,0,0,0,0,0,0,0,0];
delayTimes=50

# Define the pins for the buttons
button1 = Pin(12, Pin.IN,Pin.PULL_UP)
button2 = Pin(14, Pin.IN,Pin.PULL_UP)

# If all is correct, try the following loop
try:
    while True:
        # Try to cycle through the LEDs if there is a button clocked
        if not button1.value():
            for i in range(0,16):
                for j in range(0,10):
                    mypwm.ledcWrite(chns[j],dutys[i+j])
                time.sleep_ms(delayTimes)
        if not button2.value():
            for i in range(0,16):
                for j in range(0,10):
                    mypwm.ledcWrite(chns[9-j],dutys[i+j])
                time.sleep_ms(delayTimes)
except:
    mypwm.deinit()

Gif of program in action

Assignment Project #2:

Task Description:

The goal of this assignment is to create a program that will display colors on a neopixel in the order of a rainbow when the button is clicked

Hardware Components

Circut Diagrams

Photo(s) of the breadboard

Source Code

The Source code can be downloaded here here

#---------------------------------------------------------
# Jonah Watts 
# Assignment 2, Project 2
# For CMPT 401
#---------------------------------------------------------
from machine import Pin,PWM
from random import randint
import neopixel
import time

pin = Pin(5, Pin.OUT)
np = neopixel.NeoPixel(pin, 8) #pin for Neopixel
pins=[15,2,0] #pins for RGB LED
button = Pin(13, Pin.IN,Pin.PULL_UP) #button
current = 0 #current color

#setup the array of rainbow colors in ROYGBIV order                         
colors=[[255,0,0], #Red
        [255,30,0], #Orange
        [255,180,0], #Yellow
        [0,255,0], #Green
        [0,0,255], #Blue
        [75,0,130], #Indigo
        [138,30,138]] #Violet
    
#setup the PWM pins for the RGB LED
pwm0=PWM(Pin(pins[0]),10000)
pwm1=PWM(Pin(pins[1]),10000)
pwm2=PWM(Pin(pins[2]),10000)

#to set the color of the RGB LED
def setColor(r,g,b):
    pwm0.duty(1023-r)
    pwm1.duty(1023-g)
    pwm2.duty(1023-b)
try:
    while True:
        #if the button is pressed change to next color
        if not button.value():
            red   = colors[current][0]
            green = colors[current][1]
            blue  = colors[current][2]
            setColor(red,green,blue)
            for j in range(0,8):
                np[j]=colors[current]
                np.write()
                time.sleep_ms(50)
            current+=1

            if current==7:
                current=0
except:
    pwm0.deinit()
    pwm1.deinit()
    pwm2.deinit()

Gif of program in action