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connor2.py
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connor2.py
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# Importing modules
import spidev # To communicate with SPI devices
from gpiozero import Button
from numpy import interp # To scale values
from time import sleep
import RPi.GPIO as GPIO
import pigpio
import time
import I2C_LCD_driver
# play audio
from pygame import mixer
import subprocess
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
btnGreen = Button(25)
btnBlue = Button(19)
btnRed = Button(12)
btnFireTruck = Button(13)
btnPoliceCar = Button(27)
btnWhite = Button(5)
btnOrange = Button(22)
btnYellow = Button(6)
pi = pigpio.pi()
GPIO.setup(17, GPIO.IN)
prev_input = 0
#GPIO pings of MOSFETTS
GPIORed = 16
GPIOGreen = 20
GPIOBlue = 21
#Determine if slider or button will set colour
btnSelector = 0 # 0 = slider, 1 = buttons
mixer.init()
# Start SPI connection
spi = spidev.SpiDev() # Created an object
spi.open(0,0)
# Initializing LED pin as OUTPUT pin
# Read MCP3008 data
def analogInput(channel):
spi.max_speed_hz = 1350000
adc = spi.xfer2([1,(8+channel)<<4,0])
data = ((adc[1]&3) << 8) + adc[2]
return data
def Sirens(btnSelected):
i = 0
if (btnSelected == "PoliceCar"):
sound = mixer.Sound('police.wav')
sound.play(-1)
while i == 0:
pi.set_PWM_dutycycle(GPIORed, 0)
pi.set_PWM_dutycycle(GPIOGreen, 0)
pi.set_PWM_dutycycle(GPIOBlue, 255)
sleep(0.3)
pi.set_PWM_dutycycle(GPIORed, 255)
pi.set_PWM_dutycycle(GPIOGreen, 0)
pi.set_PWM_dutycycle(GPIOBlue, 0)
sleep(0.3)
if (btnFireTruck.is_pressed or btnRed.is_pressed or btnBlue.is_pressed or btnGreen.is_pressed or btnWhite.is_pressed or btnOrange.is_pressed or btnYellow.is_pressed):
sound.stop()
i = 1 #exit while loop
if (btnSelected == "FireTruck"):
sound = mixer.Sound('FireTruck.wav')
sound.play(-1)
while i == 0:
pi.set_PWM_dutycycle(GPIORed, 255)
pi.set_PWM_dutycycle(GPIOGreen, 255)
pi.set_PWM_dutycycle(GPIOBlue, 255)
sleep(0.3)
pi.set_PWM_dutycycle(GPIORed, 255)
pi.set_PWM_dutycycle(GPIOGreen, 0)
pi.set_PWM_dutycycle(GPIOBlue, 0)
sleep(0.3)
if (btnPoliceCar.is_pressed or btnRed.is_pressed or btnBlue.is_pressed or btnGreen.is_pressed or btnWhite.is_pressed or btnOrange.is_pressed or btnYellow.is_pressed):
sound.stop()
i = 1 #exit while loop
#variables to hold previous RGB colours from slider. Only clear lcd if a value has changed.
prevRed = 0
prevBlue = 0
prevGreen = 0
while True:
input = GPIO.input(17) #toggle switch
#### Check to see if mylcd exists. I have to put it in this loop because if the application starts while the power button for the LEDs / LCDs is off it will throw an error. If the object doesn't exist, it will create the object.
try:
mylcd
except NameError:
try:
mylcd = I2C_LCD_driver.lcd()
except:
pass
if (input == 0): #if toggle switch reads low input = 0, do slider stuff
outputRed = analogInput(0) # Reading from CH0
outputRed = int((interp(outputRed, [0, 1023], [0, 100])) * 2.55)
outputBlue = analogInput(1) # Reading from CH0
outputBlue = int((interp(outputBlue, [0, 1023], [0, 100])) * 2.55)
outputGreen = analogInput(2) # Reading from CH0
outputGreen = int((interp(outputGreen, [0, 1023], [0, 100])) * 2.55)
if (outputRed != prevRed or outputBlue != prevBlue or outputGreen != prevGreen):
try:
mylcd.lcd_clear()
pi.set_PWM_dutycycle(GPIORed, outputRed)
mylcd.lcd_display_string("Red: " + str(outputRed),1)
pi.set_PWM_dutycycle(GPIOBlue, outputBlue)
mylcd.lcd_display_string("Blue: " + str(outputBlue),2)
pi.set_PWM_dutycycle(GPIOGreen, outputGreen)
mylcd.lcd_display_string("Green: " + str(outputGreen),3)
prevRed = outputRed
prevBlue = outputBlue
prevGreen = outputGreen
except Exception:
pass
sleep(0.2)
else: # do button stuff
if btnGreen.is_pressed:
pi.set_PWM_dutycycle(GPIORed, 0)
pi.set_PWM_dutycycle(GPIOGreen, 255)
pi.set_PWM_dutycycle(GPIOBlue, 0)
sleep(0.3)
if btnBlue.is_pressed:
pi.set_PWM_dutycycle(GPIORed, 0)
pi.set_PWM_dutycycle(GPIOGreen, 0)
pi.set_PWM_dutycycle(GPIOBlue, 255)
sleep(0.3)
if btnRed.is_pressed:
pi.set_PWM_dutycycle(GPIORed, 255)
pi.set_PWM_dutycycle(GPIOGreen, 0)
pi.set_PWM_dutycycle(GPIOBlue, 0)
sleep(0.3)
if btnWhite.is_pressed:
pi.set_PWM_dutycycle(GPIORed, 255)
pi.set_PWM_dutycycle(GPIOGreen, 255)
pi.set_PWM_dutycycle(GPIOBlue, 255)
sleep(0.3)
if btnOrange.is_pressed:
pi.set_PWM_dutycycle(GPIORed, 255)
pi.set_PWM_dutycycle(GPIOGreen, 165)
pi.set_PWM_dutycycle(GPIOBlue, 0)
sleep(0.3)
if btnYellow.is_pressed:
pi.set_PWM_dutycycle(GPIORed, 255)
pi.set_PWM_dutycycle(GPIOGreen, 255)
pi.set_PWM_dutycycle(GPIOBlue, 0)
sleep(0.3)
if btnFireTruck.is_pressed:
Sirens("FireTruck")
sleep(0.3)
if btnPoliceCar.is_pressed:
Sirens("PoliceCar")
sleep(0.3)