import struct
import time
from bluepy.btle import UUID, Peripheral
GPIO.setwarnings(False)
detection_UUID = UUID(0x180C)
p = Peripheral('f0:24:d3:40:e2:00', 'random')
lcd = CharLCD(numbering_mode=GPIO.BOARD,
cols=16,
rows=2,
pin_rs=37,
pin_e=35,
pins_data=[33, 31, 29, 23])
try:
p.connect('f0:24:d3:40:e2:00', 'random')
ch = p.getCharacteristic(uuid=detection_UUID)[0]
if (ch.supportsRead()):
while 1:
vesselPresence = binascii.b2a_hex(ch.read())
vesselPresence = binascii.unhexlify(vesselPresence)
vesselPresence = struct.unpack('f', vesselPresence)[0]
display = "Detected: " + str(vesselPresence)
print(display)
lcd.write_string(display)
lcd.cursor_pos = (1, 3)
finally:
p.disconnect()
