-
-
Notifications
You must be signed in to change notification settings - Fork 0
/
send_pi_onewire.py
139 lines (112 loc) · 3.99 KB
/
send_pi_onewire.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
#!/usr/bin/python
"""
// ORIGINAL from ADAFRUIT (http://www.adafruit.com)
// http://learn.adafruit.com/adafruits-raspberry-pi-lesson-11-ds18b20-temperature-sensing/software
//
// File: send_pi_onewire.py
//
// Usage: ./send_pi_onewire host user password
//
// Described here file:///home/akhe/development/sendvalues.py
//
// Extensions:
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version
// 2 of the License, or (at your option) any later version.
//
// This file is part of the VSCP (http://www.vscp.org)
//
// Copyright (C) 2000-2023
// Ake Hedman, Grodans Paradis AB, <akhe@grodansparadis.com>
//
// This file is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this file see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA.
//
"""
import os
import sys
import telnetlib
import glob
import time
os.system('modprobe w1-gpio')
os.system('modprobe w1-therm')
onewire_prefix = "FF:FF:FF:FF:FF:FF:FF:FF:"
base_dir = '/sys/bus/w1/devices/'
#base_dir = '/home/akhe/development/simonewire/' # for test and simulation during development
def construct_guid( line ):
guid = onewire_prefix + line[0:2].upper() + ":" + \
line[3:5].upper() + ":" + \
line[6:8].upper() + ":" + \
line[9:11].upper() + ":" + \
line[12:14].upper() + ":" + \
line[15:17].upper() + ":" + \
line[18:20].upper() + ":" + \
line[21:23].upper()
return guid
def read_temp_raw( device_file ):
f = open( device_file, 'r' )
lines = f.readlines()
f.close()
return lines
def handle_temperature( device_file ):
# Read lines
lines = read_temp_raw( device_file )
# Must be a valid reading
if ( lines[0].strip()[-3:] != 'YES' ):
return
# Find position for temperature data
equals_pos = lines[1].find('t=')
# If temperature data found handle it
if ( equals_pos != -1 ):
temp_string = lines[1][ equals_pos + 2:]
temp_c = float( temp_string ) / 1000.0
temperature = str( temp_c )
# construct event
guid = construct_guid( lines[1] )
event = "3," # Priority=normal
event += "10,6," # Temperature measurement class=10, type=6
event += "0," # Use interface timestamp
event += "0," # Use obid of interface
event += guid + "," # add GUID to event
# datacoding = String format| Celsius | sensor 0
datacoding = 0x40 | (1<<3) | 0
event += hex(datacoding) # Add datacoding byte to event
# Make sure length is OK (max seven characters)
temperature = temperature.strip()
if ( len(temperature) > 7 ):
temperature = temperature[0:7]
# Write temperature into the event (not line breaks)
for ch in temperature:
event += ","
event += hex(ord(ch))
# Send event to server
tn.write("send " + event + "\n")
tn.read_until("+OK - Success.",2)
if ( len(sys.argv) < 4 ):
sys.exit("Wrong number of parameters - aborting")
host = sys.argv[1]
user = sys.argv[2]
password = sys.argv[3]
# Connect to VSCP daemon
tn = telnetlib.Telnet(host, 9598)
tn.read_until("+OK",2)
# Login
tn.write("user " + user + "\n")
tn.read_until("+OK", 2)
tn.write("pass " + password + "\n")
tn.read_until("+OK - Success.",2)
# Send temperature readings from all sensors
for folder in glob.glob( base_dir + '28*' ):
device_file = folder + '/w1_slave'
handle_temperature( device_file )
# Close connection to VSCP daemon
tn.write("quit\n")