2 ## This file is part of the libsigrokdecode project.
4 ## Copyright (C) 2012 Iztok Jeras <iztok.jeras@gmail.com>
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.
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.
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/>.
20 import sigrokdecode as srd
22 # Dictionary of FUNCTION commands and their names.
25 0x4e: 'Write scratchpad',
26 0xbe: 'Read scratchpad',
27 0x48: 'Copy scratchpad',
29 0x44: 'Convert temperature',
30 0xb4: 'Read power mode',
31 0xb8: 'Recall EEPROM',
32 0xf5: 'PIO access read',
33 0xA5: 'PIO access write',
37 class Decoder(srd.Decoder):
41 longname = 'Maxim DS28EA00 1-Wire digital thermometer'
42 desc = '1-Wire digital thermometer with Sequence Detect and PIO.'
44 inputs = ['onewire_network']
46 tags = ['IC', 'Sensor']
58 self.rom = 0x0000000000000000
61 self.out_ann = self.register(srd.OUTPUT_ANN)
64 self.put(self.ss, self.es, self.out_ann, data)
66 def decode(self, ss, es, data):
69 self.ss, self.es = ss, es
72 if code == 'RESET/PRESENCE':
73 self.putx([0, ['Reset/presence: %s'
74 % ('true' if val else 'false')]])
78 self.putx([0, ['ROM: 0x%016x' % (val)]])
79 self.state = 'COMMAND'
81 if self.state == 'COMMAND':
82 if val not in command:
83 self.putx([0, ['Unrecognized command: 0x%02x' % val]])
85 self.putx([0, ['Function command: 0x%02x \'%s\''
86 % (val, command[val])]])
87 self.state = command[val].upper()
88 elif self.state == 'READ SCRATCHPAD':
89 self.putx([0, ['Scratchpad data: 0x%02x' % val]])
90 elif self.state == 'CONVERT TEMPERATURE':
91 self.putx([0, ['Temperature conversion status: 0x%02x' % val]])
92 elif self.state in [s.upper() for s in command.values()]:
93 self.putx([0, ['TODO \'%s\': 0x%02x' % (self.state, val)]])