#1.a. To interface led/buzzer with Arduino/Raspberry pi and write a program to ‘turn on’ led
#for 1 sec after every 2 seconds.
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(18,GPIO.OUT)
while True:
    print ("LED on")
    GPIO.output(18,GPIO.HIGH)
    time.sleep(1)
    print ("LED off")
    GPIO.output(18,GPIO.LOW)
    time.sleep(2)
#1.b. To interface push button/digital sensor (ir/ldr) with arduino/raspberry pi and write a program #to ‘turn on’ led when push button is pressed or at sensor detection 
import RPi.GPIO as GPIO
import time
GPIO.setmode(GPIO.BCM)
GPIO.setwarnings(False)
GPIO.setup(17,GPIO.IN,pull_up_down=GPIO.PUD_UP)
GPIO.setup(18,GPIO.OUT)
while True:
    state= GPIO.input(17)
    if state == False:
        print('Button pressed')
        GPIO.output(18,GPIO.HIGH)
        time.sleep(2)
    else:
        print('Button not pressed')
        GPIO.output(18,GPIO.LOW)
        time.sleep(1)
#2.a
import Adafruit_DHT
sensor = Adafruit_DHT.DHT11
pin = 18#GPIO 18 of Rpi
# Try to grab a sensor reading.  Use the read_retry method which will retry up
# to 15 times to get a sensor reading (waiting 2 seconds between each retry).
while True:
    humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
    print('Temp={0:0.1f}*C  Humidity={1:0.1f}%'.format(temperature, humidity))
#2.b.
from board import SCL, SDA
import busio
from oled_text import OledText
import Adafruit_DHT
sensor = Adafruit_DHT.DHT11
pin = 18#GPIO 18 of Rpi
i2c = busio.I2C(SCL, SDA)
# Create the display, pass its pixel dimensions
oled = OledText(i2c, 128, 64)
for i in range(5):
    humidity, temperature = Adafruit_DHT.read_retry(sensor, pin)
    print('Temp={0:0.1f}*C  Humidity={1:0.1f}%'.format(temperature, humidity))
# Write to the oled
oled.text('Temp={0:0.1f}*C'.format(temperature), 1)  # Line 1
oled.text('Humid={0:0.1f}%'.format(humidity), 2)  # Line 2
##3 DC Motor interface
import time
import RPi.GPIO as GPIO
GPIO.setwarnings(False)
GPIO.setmode(GPIO.BCM)
GPIO.setup(17,GPIO.IN,GPIO.PUD_UP)
GPIO.setup(18,GPIO.OUT)
while True:
	state=GPIO.input(17)
	if state==False:
		GPIO.output(18,GPIO.HIGH)
		time.sleep(2)
		GPIO.output(18,GPIO.LOW)
		time.sleep(1)
	else:
		GPIO.output(18,GPIO.LOW)
		time.sleep(1)
##4 Bluetooth TX
import time
import serial
ser = serial.Serial('/dev/ttyS0', baudrate = 9600, parity=serial.PARITY_NONE, stopbits=serial.STOPBITS_ONE, bytesize=serial.EIGHTBITS, timeout=1)
counter=0
while True:
    ser.write(b'Write counter: %d \n'%(counter))
    print('Printed')
    time.sleep(1)
    counter += 1
##5 Push the Data to Thingspeak cloud 
import sys
import urllib.request as urllib2
from time import sleep
import Adafruit_DHT
sensor = Adafruit_DHT.DHT11
pin = 4#GPIO 4 of Rpi
myAPI = 'XXXXXX' 
baseURL = 'https://api.thingspeak.com/update?api_key=%s' % myAPI 
def DHT11_data():
	# Reading from DHT22 and storing the temperature and humidity
	humi, temp = Adafruit_DHT.read_retry(sensor, pin) 
	return humi, temp

while True:
	try:
		humi, temp = DHT11_data()
		print(humi,temp)
		if isinstance(humi, float) and isinstance(temp, float):
		      humi = '%.2f' % humi 					   
		      temp = '%.2f' % temp
		      conn = urllib2.urlopen(baseURL + '&field1=%s&field2=%s' % (temp, humi))
		      print(conn.read())
			# Closing the connection
		      conn.close()
		else:
		      print('Error')
		sleep(20)

	except:
	
	break