==== Lahendused ====


=== LED vilgutamine ===

LED vilguks 1 sek. intervalliga
<code c>
import RPi.GPIO as GPIO
import time
ledPin = 11
GPIO.setmode(GPIO.BOARD)
GPIO.setup(ledPin, GPIO.OUT)
while True:
    time.sleep(1)    
    GPIO.output(ledPin, True)
    time.sleep(1)    
    GPIO.output(ledPin, False)
</code>

vastavalt kasutaja sisestatud väärtusele 0 või 1 juhitakse LED-i. 
<code c>
import RPi.GPIO as GPIO
ledPin = 11
GPIO.setmode(GPIO.BOARD)
GPIO.setup(ledPin, GPIO.OUT)
while True:
    input_var = input("Enter LED state: ")
    if input_var == 1:        
    	GPIO.output(ledPin, True)
    elif input_var == 0:    
    	GPIO.output(ledPin, False)
    else:
	print "Unknown command!"
</code>

oleks graafiline kasutajaliides, millega saab LED sisse-välja lülitada
<code c>
import RPi.GPIO as GPIO
ledPin = 11
GPIO.setmode(GPIO.BOARD)
GPIO.setup(ledPin, GPIO.OUT)
import Tkinter as tk
class Application(tk.Frame):
    def __init__(self, master=None):
        tk.Frame.__init__(self, master)
        self.pack()
        self.createWidgets()
    def createWidgets(self):
        self.led_on = tk.Button(self)
        self.led_on["text"] = "ON"
        self.led_on["command"] = self.turn_led_on
        self.led_on.pack(side="top")
	self.led_off = tk.Button(self)
        self.led_off["text"] = "OFF"
        self.led_off["command"] = self.turn_led_off
        self.led_off.pack(side="top")
        self.QUIT = tk.Button(self, text="SULGE", fg="red",command=root.destroy)
        self.QUIT.pack(side="bottom")
    def turn_led_on(self):
        GPIO.output(ledPin, True)
    def turn_led_off(self):
        GPIO.output(ledPin, False)
root = tk.Tk()
app = Application(master=root)
root.geometry("250x150+300+300")
app.mainloop()
</code>

=== Valvenäide ===
uus rida tuleb ainult oleku muutuse peale
<code c>
import RPi.GPIO as GPIO
import time
sensorPin = 7
GPIO.setmode(GPIO.BOARD)
GPIO.setup(sensorPin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
prevState = False
currState = False
while True:
    time.sleep(0.1)
    prevState = currState
    currState = GPIO.input(sensorPin)
    if currState != prevState:
        newState = "HIGH" if currState else "LOW"
        print "GPIO pin %s is %s" % (sensorPin, newState)

</code>

lisatakse reale kuupäev ja kellaaeg, ning tulemus kirjutatakse log-i faili.

<code c>
import RPi.GPIO as GPIO
import time
import datetime
sensorPin = 7
GPIO.setmode(GPIO.BOARD)
GPIO.setup(sensorPin, GPIO.IN, pull_up_down=GPIO.PUD_DOWN)
prevState = False
currState = False
f = open('andur.log', 'w',0)
while True:
    time.sleep(0.1)
    prevState = currState
    currState = GPIO.input(sensorPin)
    if currState != prevState:
        newState = "1" if currState else "0"
        aeg=datetime.datetime.now()
        print "%s, %s" % (aeg,newState)
        #f.write(str(aeg)+","+newState+'\n')
        f.write(newState+'\n')
 </code>