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1##
2## This file is part of the libsigrokdecode project.
3##
4## Copyright (C) 2012 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, write to the Free Software
18## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
19##
20
21# Panasonic PAN1321 Bluetooth module protocol decoder
22
23import sigrokdecode as srd
24
25# ...
26RX = 0
27TX = 1
28
29class Decoder(srd.Decoder):
30 api_version = 1
31 id = 'pan1321'
32 name = 'PAN1321'
33 longname = 'Panasonic PAN1321'
34 desc = 'Bluetooth RF module with Serial Port Profile (SPP).'
35 license = 'gplv2+'
36 inputs = ['uart']
37 outputs = ['pan1321']
38 probes = []
39 optional_probes = []
40 options = {}
41 annotations = [
42 ['Text (verbose)', 'Human-readable text (verbose)'],
43 ['Text', 'Human-readable text'],
44 ]
45
46 def __init__(self, **kwargs):
47 self.cmd = ['', '']
48 self.ss_block = None
49
50 def start(self, metadata):
51 # self.out_proto = self.add(srd.OUTPUT_PROTO, 'pan1321')
52 self.out_ann = self.add(srd.OUTPUT_ANN, 'pan1321')
53
54 def report(self):
55 pass
56
57 def putx(self, data):
58 self.put(self.ss_block, self.es_block, self.out_ann, data)
59
60 def handle_host_command(self, rxtx, s):
61 if s.startswith('AT+JSEC'):
62 pin = s[-4:]
63 self.putx([0, ['Host set the Bluetooth PIN to ' + pin]])
64 self.putx([1, ['PIN = ' + pin]])
65 elif s.startswith('AT+JSLN'):
66 name = s[s.find(',') + 1:]
67 self.putx([0, ['Host set the Bluetooth name to ' + name]])
68 self.putx([1, ['BT name = ' + name]])
69 else:
70 self.putx([0, ['Host sent unsupported command: %s' % s]])
71 self.putx([1, ['Unsupported command: %s' % s]])
72 self.cmd[rxtx] = ''
73
74 def handle_device_reply(self, rxtx, s):
75 if s == 'ROK':
76 self.putx([0, ['Device initialized correctly']])
77 self.putx([1, ['Init']])
78 elif s == 'OK':
79 self.putx([0, ['Device acknowledged last command']])
80 self.putx([1, ['ACK']])
81 elif s.startswith('ERR'):
82 error = s[s.find('=') + 1:]
83 self.putx([0, ['Device sent error code ' + error]])
84 self.putx([1, ['ERR = ' + error]])
85 else:
86 self.putx([0, ['Device sent an unknown reply: %s' % s]])
87 self.putx([1, ['Unknown reply: %s' % s]])
88 self.cmd[rxtx] = ''
89
90 def decode(self, ss, es, data):
91 ptype, rxtx, pdata = data
92
93 # For now, ignore all UART packets except the actual data packets.
94 if ptype != 'DATA':
95 return
96
97 # If this is the start of a command/reply, remember the start sample.
98 if self.cmd[rxtx] == '':
99 self.ss_block = ss
100
101 # Append a new (ASCII) byte to the currently built/parsed command.
102 self.cmd[rxtx] += chr(pdata)
103
104 # Get packets/bytes until an \r\n sequence is found (end of command).
105 if self.cmd[rxtx][-1:] != '\n':
106 return
107
108 # Handle host commands and device replies.
109 # We remove trailing \r\n from the strings before handling them.
110 if rxtx == RX:
111 self.es_block = es
112 self.handle_device_reply(rxtx, self.cmd[rxtx][:-2])
113 elif rxtx == TX:
114 self.es_block = es
115 self.handle_host_command(rxtx, self.cmd[rxtx][:-2])
116 else:
117 raise Exception('Invalid rxtx value: %d' % rxtx)
118