Smart and Autonomous parking.
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#Authors: Oulis Evangelos, Oulis Nikolaos, Drosos Katsibras
#===================================================================
#!/usr/bin/env python
import time
import serial
import requests
import json
# Open file to configure communication with server.
with open('/home/pi/project/data.json', 'r') as json_file:
json_data = json_file.read()
if json_data != "" and json_data != None:
server_par = json.loads(json_data.replace('\n','').replace(' ',''))
server_ip = server_par['ip']
server_port = server_par['port']
if server_ip != None and server_port != None:
API_ENDPOINT = 'http://' + server_ip + ':' + server_port + '/parkingStatus'
ser = serial.Serial(
port='/dev/ttyACM0',
baudrate = 9600,
parity=serial.PARITY_NONE,
stopbits=serial.STOPBITS_ONE,
bytesize=serial.EIGHTBITS,
timeout=1
)
counter=0
ser.readline()
prev_status = "-1"
device_session = requests.session()
data = """{"username" :""" + server_par['username'] + """, "password":""" + server_par['password'] + """, "device": """ + server_par['device'] + """}"""
s.post(url = API_ENDPOINT, data = data)
while 1:
park_status = ser.readline()
park_status_data = str(park_status).split("#")
parkingCode = park_status_data[0].replace('b\'','')
parkingStatus = park_status_data[1].replace('\\r\\n\'', '')
try:
if parkingStatus != prev_status:
data = """{"no":""" + parkingCode + ""","status":""" + parkingStatus + """}"""
r = s.post(url = API_ENDPOINT, data = data)
if parkingStatus == "0":
print("parking reserved. RESPONSE :", r.status_code, "\n")
elif parkingStatus == "1":
print("parking not reserved. RESPONSE : ", r.status_code, "\n")
except NameError as e:
print("**Not already prev variable. <Error> : ", str(e), "\n")
prev_status = parkingStatus
else:
print("Create a *.json configuration like: {'ip' : 'xxx.xxx.xxx.xxx', 'port': 'xxxx'}")