335 lines
11 KiB
Python
335 lines
11 KiB
Python
import json
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import time
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import argparse
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import sys, signal
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import gpiod
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from pymodbus.client import ModbusTcpClient
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# import AWSIoTPythonSDK.MQTTLib as AWSIoTPyMQTT
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import sdtcloudnodeqmqtt
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import pytz
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from datetime import datetime
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import threading, socket
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import uuid
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def Motor(chip, status, action):
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if action == 'On':
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status[0] = 1
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else: # action == 'Off'
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status[0] = 0
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chip.set_values(status)
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def Valve_Vent(chip, status, action):
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if action == 'On':
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status[1] = 1
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else: # action == 'Off'
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status[1] = 0
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chip.set_values(status)
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def Valve_MixedWater(chip, status, action):
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if action == 'On':
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status[2] = 1
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else: # action == 'Off'
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status[2] = 0
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chip.set_values(status)
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def Valve_PureWater(chip, status, action):
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if action == 'On':
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status[3] = 1
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else: # action == 'Off'
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status[3] = 0
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chip.set_values(status)
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def Measure_Weight(client):
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# print('In')
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try:
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result = client.read_holding_registers(1, 1)
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if result.isError():
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print(f'Error: {result}')
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else:
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val = result.registers[0]
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val -= 1000
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val /= 1000
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# print(f'value: {val}')
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except Exception as e:
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pass
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return val
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def Calculate_Concentration(weight):
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global data
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data['data']['weight'] = weight
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result = (float(weight) * 1.883239171 * 128.5) - 126.11 # 1000 / 531 = 1.883239171
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data['data']['concentration'] = result
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# print(f'{weight}, {result}')
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def Set_Zero(client):
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client.write_coil(1, 1)
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def Command_Read():
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with open('./control.json', 'r') as f:
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cmd = json.load(f)
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if cmd['type'] == 'auto':
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Valve_Vent(chip=output_lines, status=status, action='Off')
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Motor(chip=output_lines, status=status, action='Off')
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mixed_duration = int(cmd['device']['mixed']['duration'])
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pure_duration = int(cmd['device']['pure']['duration'])
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vent_duration = int(cmd['device']['vent']['duration'])
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time.sleep(5)
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start = Measure_Weight(client=client)
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time.sleep(5)
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# input mixed water
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Valve_MixedWater(chip=output_lines, status=status, action='On')
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time.sleep(mixed_duration)
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Valve_MixedWater(chip=output_lines, status=status, action='Off')
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time.sleep(10)
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# measure weight
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end = Measure_Weight(client=client)
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time.sleep(1)
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Calculate_Concentration(weight=(float(end)-float(start)))
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# vent mixed water
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Valve_Vent(chip=output_lines, status=status, action='On')
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time.sleep(0.5)
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Motor(chip=output_lines, status=status, action='On')
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time.sleep(vent_duration)
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Motor(chip=output_lines, status=status, action='Off')
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time.sleep(0.5)
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Valve_Vent(chip=output_lines, status=status, action='Off')
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time.sleep(0.5)
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# input pure water
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Valve_PureWater(chip=output_lines, status=status, action='On')
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time.sleep(pure_duration)
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Valve_PureWater(chip=output_lines, status=status, action='Off')
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time.sleep(0.5)
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# vent pure water
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Valve_Vent(chip=output_lines, status=status, action='On')
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time.sleep(0.5)
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Motor(chip=output_lines, status=status, action='On')
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time.sleep(vent_duration)
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Motor(chip=output_lines, status=status, action='Off')
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time.sleep(0.5)
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Valve_Vent(chip=output_lines, status=status, action='Off')
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time.sleep(1)
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else: # cmd['type'] == 'manual'
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Motor(chip=output_lines, status=status, action=cmd['device']['motor']['action'])
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Valve_Vent(chip=output_lines, status=status, action=cmd['device']['vent']['action'])
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Valve_MixedWater(chip=output_lines, status=status, action=cmd['device']['mixed']['action'])
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Valve_PureWater(chip=output_lines, status=status, action=cmd['device']['pure']['action'])
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if cmd['device']['measure']['action'] == 'On':
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result = Measure_Weight(client=client)
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Calculate_Concentration(result)
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if cmd['device']['setzero']['action'] == 'On':
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Set_Zero(client=client)
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def runAction():
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# Write the app's actions in the "runAction" function.
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# Connect MQTT Broker
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# You have to rename client id. There are special rules.
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# Client Name: "device-app-*"
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# For Example
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# 1. device-app-test -> Good
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# 2. device-app-light-app -> Good
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# 3. device-test-app -> Bad
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sdtcloud = sdtcloudnodeqmqtt.sdtcloudnodeqmqtt()
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mqttClient1 = sdtcloud.setClient(f"device-app-1{uuid.uuid1()}") # parameter is client ID(string)
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mqttClient2 = sdtcloud.setClient(f"device-app-2{uuid.uuid1()}") # parameter is client ID(string)
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mqttClient3 = sdtcloud.setClient(f"device-app-3{uuid.uuid1()}") # parameter is client ID(string)
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mqttClient4 = sdtcloud.setClient(f"device-app-4{uuid.uuid1()}") # parameter is client ID(string)
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mqttClient5 = sdtcloud.setClient(f"device-app-5{uuid.uuid1()}") # parameter is client ID(string)
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mqttlist = [mqttClient1, mqttClient2, mqttClient3, mqttClient4, mqttClient5]
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# If you have config's value, please make config.json file.
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# - Project Code's variable: projectCode(string)
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# - Asset Code's variable: assetCode(string)
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# - You may need it to create a topic.
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cnt = 0
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while True:
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start = time.time()
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Command_Read()
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data['timestamp'] = int(time.time() * 1000)
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sdtcloud.pubMessage(mqttlist[cnt], data)
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end = time.time()
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cnt += 1
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if cnt == 5:
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cnt = 0
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diff = end - start
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if diff < 3:
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time.sleep(3 - diff)
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def handle_client(conn, ip, port):
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global data
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while True:
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try:
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recv = conn.recv(100)
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if not recv:
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# print(f"Connection with {addr} was reset. Waiting for new connection.")
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break
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message = recv.decode().strip()
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if message[:3] != 'STX' or message[-3:] != 'ETX':
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err_msg = 'STXERRORETX'
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conn.sendall(err_msg.encode("utf8"))
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else:
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if message[3] == 'R': # Transfer data from SDT to Sampyo
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now = datetime.now(pytz.timezone('Asia/Seoul'))
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time_str = now.strftime('%Y%m%d%H%M%S')
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h_weight = float(data['data']['weight'])
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h_concentration = float(data['data']['concentration'])
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data_weight = '{:.3f}'.format(h_weight)
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data_concent = '{:.3f}'.format(h_concentration)
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send_msg = 'STX' + time_str + '|' + data_weight + '|' + data_concent + 'ETX'
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try:
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with open('./control.json', 'r') as f:
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cmd = json.load(f)
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cmd['device']['measure']['action'] = 'On'
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with open('./control.json', 'w') as f:
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json.dump(cmd, f, indent=4)
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conn.sendall(send_msg.encode("utf8"))
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except Exception as e:
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err_msg = 'STXERRORETX'
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conn.sendall(err_msg.encode("utf8"))
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elif message[3] == 'S': # Start measurement
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try:
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with open('./control.json', 'r') as f:
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cmd = json.load(f)
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cmd['type'] = 'auto'
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with open('./control.json', 'w') as f:
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json.dump(cmd, f, indent=4)
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send_msg = 'STXOKETX'
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conn.sendall(send_msg.encode("utf8"))
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except Exception as e:
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err_msg = 'STXERRORETX'
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conn.sendall(err_msg.encode("utf8"))
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elif message[3] == 'T': # Stop measurement
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try:
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with open('./control.json', 'r') as f:
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cmd = json.load(f)
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cmd['type'] = 'manual'
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cmd['device']['measure']['action'] = 'Off'
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with open('./control.json', 'w') as f:
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json.dump(cmd, f, indent=4)
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send_msg = 'STXOKETX'
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conn.sendall(send_msg.encode("utf8"))
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except Exception as e:
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err_msg = 'STXERRORETX'
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conn.sendall(err_msg.encode("utf8"))
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else:
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err_msg = 'STXERRORETX'
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conn.sendall(err_msg.encode("utf8"))
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except ConnectionResetError:
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# print("Connection with " + ip + ":" + port + " was reset. Waiting for new connection.")
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break
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# print("Closing the connection")
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def start_server(addr, port):
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host = addr # "25.7.57.1"
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port = port # 5000
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soc = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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soc.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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try:
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soc.bind((host, port))
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except:
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sys.exit()
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soc.listen(1) # Only one connection at a time.
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while True:
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conn, addr = soc.accept()
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ip, port = str(addr[0]), str(addr[1])
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print("Connected with " + ip + ":" + port)
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client_handler = threading.Thread(target=handle_client, args=(conn, ip, port))
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client_handler.start()
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soc.close()
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def exit_handler(signum, frame):
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Motor(chip=output_lines, status=status, action='Off')
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Valve_Vent(chip=output_lines, status=status, action='Off')
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Valve_MixedWater(chip=output_lines, status=status, action='Off')
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Valve_PureWater(chip=output_lines, status=status, action='Off')
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client.close()
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sys.exit(0)
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if __name__ == "__main__":
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output_chip = gpiod.chip('gpiochip11')
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config = gpiod.line_request()
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config.consumer = 'output'
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config.request_type = gpiod.line_request.DIRECTION_OUTPUT
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output_lines = output_chip.get_lines([0, 1, 2, 3, 4, 5, 6, 7])
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output_lines.request(config, default_vals=[0, 0, 0, 0, 0, 0, 0, 0])
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status = [0, 0, 0, 0, 0, 0, 0, 0]
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signal.signal(signal.SIGINT, exit_handler)
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with open('./config.json', encoding='UTF-8') as f:
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jsonData = json.load(f)
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modbus_addr = jsonData['modbus-server']['address']
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modbus_port = jsonData['modbus-server']['port']
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client = ModbusTcpClient(modbus_addr, modbus_port)
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data = {
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"timestamp": 0,
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"data":{
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"weight": 0,
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"concentration": 0
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}
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}
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## Get ProjectCode and AssetCode
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## Execution main funcion
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operation_thread = threading.Thread(target=runAction, args=())
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operation_thread.start()
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tcp_addr = jsonData['tcp-server']['address']
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tcp_port = jsonData['tcp-server']['port']
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## Execution TCP/IP server
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start_server(addr=tcp_addr, port=tcp_port)
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