import time
import lcdlib as lcd
LCD_LINE_1 = 0x80 # LCD RAM address for the 1st line
LCD_LINE_2 = 0xC0 # LCD RAM address for the 2nd line
# Initialise display
lcd.init(25, 24, 23, 17, 18, 22, 16)
while True:
# Send some test
lcd.string("Rasbperry Pi", LCD_LINE_1)
lcd.string("16x2 LCD Test", LCD_LINE_2)
time.sleep(3) # 3 second delay
# Send some text
lcd.string("1234567890123456", LCD_LINE_1)
lcd.string("abcdefghijklmnop", LCD_LINE_2)
time.sleep(3) # 3 second delay
pulse_duration_3 = pulse_end_3 - pulse_start_3
#speed = distance/duration
#duration = pulse_duration/2 (we need only the distance to the object
#speed of sound = 343 m/S = 34300 cm/S
distance_3 = (pulse_duration_3 * 34300) / 2
#round the distance to 2 decimal
distance_3 = round(distance_3, 2)
print("Distance 3:", distance_3, "cm")
return distance_3
############### LCD display #####################
#initialize lcd pins
lcd.init(26, 19, 13, 6, 5, 11, 16)
# 80 : Hexadecimal code use to force cursor to beginnig at first line
LCD_LINE_1 = 0 * 80
#////////////////////#
while True:
client = mqtt.Client()
# set username and password
client.username_pw_set("wdvebxdg", "QMlVLEusK9yU")
client.on_publish = on_publish
client.on_connect = on_connect
client.connect(mqtt_server, port=12313, keepalive=60)
client.loop_start()
