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1##
2## This file is part of the libsigrokdecode project.
3##
4## Copyright (C) 2012-2013 Uwe Hermann <uwe@hermann-uwe.de>
5##
6## This program is free software; you can redistribute it and/or modify
7## it under the terms of the GNU General Public License as published by
8## the Free Software Foundation; either version 2 of the License, or
9## (at your option) any later version.
10##
11## This program is distributed in the hope that it will be useful,
12## but WITHOUT ANY WARRANTY; without even the implied warranty of
13## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14## GNU General Public License for more details.
15##
16## You should have received a copy of the GNU General Public License
17## along with this program; if not, see <http://www.gnu.org/licenses/>.
18##
19
20import sigrokdecode as srd
21
22# ...
23RX = 0
24TX = 1
25
26class Decoder(srd.Decoder):
27 api_version = 3
28 id = 'pan1321'
29 name = 'PAN1321'
30 longname = 'Panasonic PAN1321'
31 desc = 'Bluetooth RF module with Serial Port Profile (SPP).'
32 license = 'gplv2+'
33 inputs = ['uart']
34 outputs = ['pan1321']
35 tags = ['Wireless/RF']
36 annotations = (
37 ('text-verbose', 'Human-readable text (verbose)'),
38 ('text', 'Human-readable text'),
39 ('warnings', 'Human-readable warnings'),
40 )
41
42 def __init__(self):
43 self.reset()
44
45 def reset(self):
46 self.cmd = ['', '']
47 self.ss_block = None
48
49 def start(self):
50 self.out_ann = self.register(srd.OUTPUT_ANN)
51
52 def putx(self, data):
53 self.put(self.ss_block, self.es_block, self.out_ann, data)
54
55 def handle_host_command(self, rxtx, s):
56 if s.startswith('AT+JAAC'):
57 # AT+JAAC=<auto_accept> (0 or 1)
58 p = s[s.find('=') + 1:]
59 if p not in ('0', '1'):
60 self.putx([2, ['Warning: Invalid JAAC parameter "%s"' % p]])
61 return
62 x = 'Auto' if (p == '1') else 'Don\'t auto'
63 self.putx([0, ['%s-accept new connections' % x]])
64 self.putx([1, ['%s-accept connections' % x]])
65 elif s.startswith('AT+JPRO'):
66 # AT+JPRO=<mode> (0 or 1)
67 p = s[s.find('=') + 1:]
68 if p not in ('0', '1'):
69 self.putx([2, ['Warning: Invalid JPRO parameter "%s"' % p]])
70 return
71 onoff = 'off' if (p == '0') else 'on'
72 x = 'Leaving' if (p == '0') else 'Entering'
73 self.putx([0, ['%s production mode' % x]])
74 self.putx([1, ['Production mode = %s' % onoff]])
75 elif s.startswith('AT+JRES'):
76 # AT+JRES
77 if s != 'AT+JRES': # JRES has no params.
78 self.putx([2, ['Warning: Invalid JRES usage.']])
79 return
80 self.putx([0, ['Triggering a software reset']])
81 self.putx([1, ['Reset']])
82 elif s.startswith('AT+JSDA'):
83 # AT+JSDA=<l>,<d> (l: length in bytes, d: data)
84 # l is (max?) 3 decimal digits and ranges from 1 to MTU size.
85 # Data can be ASCII or binary values (l bytes total).
86 l, d = s[s.find('=') + 1:].split(',')
87 if not l.isnumeric():
88 self.putx([2, ['Warning: Invalid data length "%s".' % l]])
89 if int(l) != len(d):
90 self.putx([2, ['Warning: Data length mismatch (%d != %d).' % \
91 (int(l), len(d))]])
92 # TODO: Warn if length > MTU size (which is firmware-dependent
93 # and is negotiated by both Bluetooth devices upon connection).
94 b = ''.join(['%02x ' % ord(c) for c in d])[:-1]
95 self.putx([0, ['Sending %d data bytes: %s' % (int(l), b)]])
96 self.putx([1, ['Send %d = %s' % (int(l), b)]])
97 elif s.startswith('AT+JSEC'):
98 # AT+JSEC=<secmode>,<linkkey_info>,<pintype>,<pinlen>,<pin>
99 # secmode: Security mode 1 or 3 (default).
100 # linkkey_info: Must be 1 or 2. Has no function according to docs.
101 # pintype: 1: variable pin (default), 2: fixed pin.
102 # pinlen: PIN length (2 decimal digits). Max. PIN length is 16.
103 # pin: The Bluetooth PIN ('pinlen' chars). Used if pintype=2.
104 # Note: AT+JSEC (if used) must be the first command after reset.
105 # TODO: Parse all the other parameters.
106 pin = s[-4:]
107 self.putx([0, ['Host set the Bluetooth PIN to "' + pin + '"']])
108 self.putx([1, ['PIN = ' + pin]])
109 elif s.startswith('AT+JSLN'):
110 # AT+JSLN=<namelen>,<name>
111 # namelen: Friendly name length (2 decimal digits). Max. len is 18.
112 # name: The Bluetooth "friendly name" ('namelen' ASCII characters).
113 name = s[s.find(',') + 1:]
114 self.putx([0, ['Host set the Bluetooth name to "' + name + '"']])
115 self.putx([1, ['BT name = ' + name]])
116 else:
117 self.putx([0, ['Host sent unsupported command: %s' % s]])
118 self.putx([1, ['Unsupported command: %s' % s]])
119
120 def handle_device_reply(self, rxtx, s):
121 if s == 'ROK':
122 self.putx([0, ['Device initialized correctly']])
123 self.putx([1, ['Init']])
124 elif s == 'OK':
125 self.putx([0, ['Device acknowledged last command']])
126 self.putx([1, ['ACK']])
127 elif s.startswith('ERR'):
128 error = s[s.find('=') + 1:]
129 self.putx([0, ['Device sent error code ' + error]])
130 self.putx([1, ['ERR = ' + error]])
131 else:
132 self.putx([0, ['Device sent an unknown reply: %s' % s]])
133 self.putx([1, ['Unknown reply: %s' % s]])
134
135 def decode(self, ss, es, data):
136 ptype, rxtx, pdata = data
137
138 # For now, ignore all UART packets except the actual data packets.
139 if ptype != 'DATA':
140 return
141
142 # We're only interested in the byte value (not individual bits).
143 pdata = pdata[0]
144
145 # If this is the start of a command/reply, remember the start sample.
146 if self.cmd[rxtx] == '':
147 self.ss_block = ss
148
149 # Append a new (ASCII) byte to the currently built/parsed command.
150 self.cmd[rxtx] += chr(pdata)
151
152 # Get packets/bytes until an \r\n sequence is found (end of command).
153 if self.cmd[rxtx][-2:] != '\r\n':
154 return
155
156 # Handle host commands and device replies.
157 # We remove trailing \r\n from the strings before handling them.
158 self.es_block = es
159 if rxtx == RX:
160 self.handle_device_reply(rxtx, self.cmd[rxtx][:-2])
161 elif rxtx == TX:
162 self.handle_host_command(rxtx, self.cmd[rxtx][:-2])
163
164 self.cmd[rxtx] = ''