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master_webhmi.py
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master_webhmi.py
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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Modbus TestKit: Implementation of Modbus protocol in python
(C)2009 - Luc Jean - luc.jean@gmail.com
(C)2009 - Apidev - http://www.apidev.fr
This is distributed under GNU LGPL license, see license.txt
"""
from __future__ import with_statement
from bottle import route, run, template, TEMPLATES, send_file, redirect, request
import modbus_tk.modbus_tcp as modbus_tcp
import modbus_tk.modbus_rtu as modbus_rtu
import modbus_tk.modbus as modbus
import sqlite3
import webbrowser
SERIAL = True
if SERIAL:
SERIAL_PORTS = {}
try:
import serial
except Exception, msg:
SERIAL = False
print "Warning: serial communication is disabled"
DEBUG = False if SERIAL else True #reload mode must not be set with serial com. It would cause an Access Denied
class Master:
def __init__(self, protocol, address, id, db):
if protocol == "tcp":
try:
(host, port) = address.split(":")
self.modbus = modbus_tcp.TcpMaster(str(host), int(port))
except:
self.modbus = modbus_tcp.TcpMaster(address)
self.modbus.set_timeout(5.0)
elif protocol == "rtu":
if SERIAL:
args = unicode(address).split(',')
kwargs = {}
for a in args:
key, val = a.split(':')
if key=='port':
try:
serial_port = int(val)
except:
serial_port = val
else:
kwargs[key] = val
try:
try:
s = SERIAL_PORTS[serial_port]
except IndexError:
SERIAL_PORTS[serial_port] = s = serial.Serial(port=serial_port, **kwargs)
self.modbus = modbus_rtu.RtuMaster(s)
except Exception, msg:
raise Exception("Protocol {0} error! {1}".format(protocol, msg))
else:
raise Exception("Protocol {0} is disabled!".format(protocol))
else:
raise Exception("Protocol {0} is not supported!".format(protocol))
self.id = id
self._db = db
self.address = address
self.protocol = protocol
self.requests = self._db.get_requests(self.id)
def get_slaves(self):
return self._db.get_slaves(self.id)
def add_request(self, id, fct, start, length):
self._db.add_request(self.id, id, fct, start, length)
self.requests = self._db.get_requests(self.id)
def delete_request(self, id):
self._db.delete_request(id)
self.requests = self._db.get_requests(self.id)
class Persistence:
def __init__(self):
with self._get_db() as conn:
cursor = conn.cursor()
try:
cursor.execute("SELECT * FROM request;")
except:
cursor.execute("""CREATE TABLE master (id INTEGER PRIMARY KEY AUTOINCREMENT,
protocol TEXT,
server_address TEXT);""")
cursor.execute("""CREATE TABLE request (id INTEGER PRIMARY KEY AUTOINCREMENT,
master_id INTEGER,
slave INTEGER,
function INTEGER,
address INTEGER,
length INTEGER,
FOREIGN KEY(master_id) REFERENCES master(id));""")
cursor.execute("""INSERT INTO master (protocol, server_address) VALUES ('tcp', 'localhost');""")
def _get_db(self):
return sqlite3.connect("./db/master_webhmi.db")
def get_data(self, sql_query, args=None):
with self._get_db() as conn:
conn.row_factory = sqlite3.Row
cursor = conn.cursor()
if args:
cursor.execute(sql_query, args)
else:
cursor.execute(sql_query)
l = []
for row in cursor:
d = {}
for x in row.keys():
d[x] = row[x]
l.append(d)
return l
def get_masters(self):
return self.get_data("SELECT * FROM master;")
def get_requests(self, master_id):
reqs = self.get_data("SELECT * FROM request where master_id=?;", (master_id,))
for r in reqs:
name = ' - '.join(['{0}: {1}'.format(x.capitalize(), r[x]) for x in r.keys() if x.find('id')<0])
r['name'] = name
return reqs
def get_slaves(self, master_id):
reqs = self.get_data("SELECT DISTINCT slave FROM request WHERE master_id=?;", (master_id,))
return reqs
def get_hr_requests_for_slave(self, master_id, slave_id):
reqs = self.get_data("SELECT * FROM request WHERE master_id=? AND slave=? AND function=3;", (master_id,slave_id))
return reqs
def add_request(self, master, slave, fct, start, length):
with self._get_db() as conn:
cursor = conn.cursor()
cursor.execute("INSERT INTO request (master_id, slave, function, address, length) VALUES (?, ?, ?, ?, ?)", \
(master, slave, fct, start, length))
def delete_request(self, id):
with self._get_db() as conn:
cursor = conn.cursor()
cursor.execute("DELETE FROM request WHERE id = ?", (id, ))
def add_master(self, protocol, server_address):
with self._get_db() as conn:
cursor = conn.cursor()
cursor.execute("INSERT INTO master (protocol, server_address) VALUES (?, ?)", (protocol, server_address))
return self.get_data("SELECT MAX(id) FROM master;")[0]['MAX(id)']
def delete_master(self, id):
with self._get_db() as conn:
cursor = conn.cursor()
cursor.execute("DELETE FROM master WHERE id=?", (id,))
class App:
def __init__(self):
self._db = Persistence()
self._load_masters()
def _load_masters(self):
self._masters = {}
for m in self._db.get_masters():
id = m['id']
try:
self._masters[id] = Master(m['protocol'], m['server_address'], id, self._db)
except Exception, msg:
print "WARNING! can't load master {0} - {1}: {2}".format(m['protocol'], m['server_address'], msg)
def get_masters(self):
the_keys = self._masters.keys()
the_keys.sort()
return [self._masters[k] for k in the_keys]
def get_master(self, id):
id = int(id)
return self._masters[id]
def add_master(self, protocol, server_address):
id = self._db.add_master(protocol, server_address)
self._load_masters()
return id
def delete_master(self, id):
self._db.delete_master(id)
self._load_masters()
APP = App()
@route('/media/:filename')
def static_file(filename):
send_file(filename, root='./media/')
@route("/")
def index():
redirect("/masters")
#TEMPLATES.clear()
#return template('templates/master_index', masters=APP.get_masters())
@route("/masters")
def master_list():
TEMPLATES.clear()
return template('templates/masters_list', masters=APP.get_masters())
@route("/master/:id")
def master_detail(id):
TEMPLATES.clear()
return template('templates/master_index', master=APP.get_master(id))
@route("/delete-master/:id")
def delete_master(id):
TEMPLATES.clear()
APP.delete_master(id)
return redirect('/masters')
@route("modbus-read/:master_id/:slave_id/:function_code/:start_address/:length")
def show_results(master_id, slave_id, function_code, start_address, length):
TEMPLATES.clear()
master = APP.get_master(master_id)
name = 'Slave {0} - Function {1}'.format(slave_id, function_code)
friendly_name = 'Slave {0} - Function {1} - Address {2} - Count {3}'.format(slave_id, function_code, start_address, length)
url = "/modbus-read/{0}/{1}/{2}/{3}/{4}".format(master_id, slave_id, function_code, start_address, length)
try:
results = master.modbus.execute(int(slave_id), int(function_code), int(start_address), int(length))
lines = [i*16 for i in range(int(len(results)%16>0)+len(results)//16)]
return template('templates/master_results', results=results, start=int(start_address),
lines=lines, name=name, url=url, master=master, friendly_name=friendly_name)
except modbus.ModbusError, msg:
return template('templates/modbus_error', msg=msg, name=name, url=url, master=master, friendly_name=friendly_name)
@route("/modbus-read-all-hr/:master_id/:slave_id")
def show_results_all_hr(master_id, slave_id):
TEMPLATES.clear()
master = APP.get_master(master_id)
requests = APP._db.get_hr_requests_for_slave(master_id, slave_id)
name = 'Slave {0} - Function {1}'.format(slave_id, 3)
friendly_name = 'Slave {0} - Function {1} - All Registers'.format(slave_id, 3)
url = "/modbus-read-all-hr/{0}/{1}".format(master_id, slave_id)
all_results = {}
try:
for req in requests:
i = int(req['address'])
#print "%s, %s, %s"%(int(slave_id), int(req['address']), int(req['length']))
results = master.modbus.execute(int(slave_id), int(3), int(req['address']), int(req['length']))
for result in results:
all_results[i] = {'result': result, 'register_hex': hex(i)}
i += 1
return template('templates/master_results_all_hr', results=all_results, url=url,
name=name, master=master, friendly_name=friendly_name)
except modbus.ModbusError, msg:
return template('templates/modbus_error', msg=msg, name=name, url=url, master=master, friendly_name=friendly_name)
@route('add-request/:master', method='POST')
def add_request(master):
slave = request.POST['slave']
function = request.POST['function']
address = request.POST['address']
length = request.POST['length']
APP.get_master(master).add_request(slave, function, address, length)
return show_results(master, slave, function, address, length)
@route('/delete-request/:master/:id')
def delete_request(master, id):
APP.get_master(master).delete_request(id)
return redirect('/master/%s'%(master))
@route('/add-master', method='POST')
def add_master():
protocol = request.POST['protocol']
server_address = request.POST['server_address']
id = APP.add_master(protocol, server_address)
return master_detail(id)
@route('/modbus-read-json/:master_id/:slave_id/:function_code/:start_address/:length')
def get_json_data(master_id, slave_id, function_code, start_address, length):
master = APP.get_master(master_id)
try:
results = master.modbus.execute(int(slave_id), int(function_code), int(start_address), int(length))
json_data = {}
i = 0
for r in results:
json_data[str(i)] = r
i += 1
except modbus.ModbusError, msg:
return template('templates/modbus_error', msg=msg, name=name, url=url, master=master, friendly_name=friendly_name)
return json_data
@route('/modbus-read-json-all-hr/:master_id/:slave_id')
def get_all_json_data(master_id, slave_id):
master = APP.get_master(master_id)
requests = APP._db.get_hr_requests_for_slave(master_id, slave_id);
try:
json_data = {}
for req in requests:
i = int(req['address'])
results = master.modbus.execute(int(slave_id), int(3), int(req['address']), int(req['length']))
for result in results:
json_data[str(i)] = result
i += 1
except modbus.ModbusError, msg:
return template('templates/modbus_error', msg=msg, name=name, url=url, master=master, friendly_name=friendly_name)
return json_data
webbrowser.open_new_tab('http://localhost:8075/')
run(reloader=DEBUG, port=8075)