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1 | ## |
2 | ## This file is part of the libsigrokdecode project. | |
3 | ## | |
4 | ## Copyright (C) 2020 Analog Devices Inc. | |
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 3 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 | ||
20 | import sigrokdecode as srd | |
21 | ||
22 | class Decoder(srd.Decoder): | |
23 | api_version = 3 | |
24 | id = 'ad5626' | |
25 | name = 'AD5626' | |
26 | longname = 'Analog Devices AD5626' | |
27 | desc = 'Analog Devices AD5626 12-bit nanoDAC.' | |
28 | license = 'gplv2+' | |
29 | inputs = ['spi'] | |
30 | outputs = [] | |
b2404fdf | 31 | tags = ['IC', 'Analog/digital'] |
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32 | annotations = ( |
33 | ('data', 'Data'), | |
34 | ) | |
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35 | |
36 | def __init__(self,): | |
37 | self.reset() | |
38 | ||
39 | def reset(self): | |
40 | self.data = 0 | |
41 | self.ss = 0 | |
42 | ||
43 | def start(self): | |
44 | self.out_ann = self.register(srd.OUTPUT_ANN) | |
45 | ||
46 | def put_data(self, pos, data): | |
47 | self.put(pos[0], pos[1], self.out_ann, [0, [str(data) + 'V']]) | |
48 | ||
49 | def decode(self, ss, es, data): | |
50 | ptype = data[0] | |
51 | ||
52 | if ptype == 'CS-CHANGE': | |
53 | cs_old, cs_new = data[1:] | |
54 | if cs_old is not None and cs_old == 0 and cs_new == 1: | |
55 | self.data >>= 1 | |
56 | self.data /= 1000 | |
57 | self.put_data([self.ss, es], self.data) | |
58 | self.data = 0 | |
59 | elif cs_old is not None and cs_old == 1 and cs_new == 0: | |
60 | self.ss = ss | |
61 | elif ptype == 'BITS': | |
62 | mosi = data[1] | |
63 | for bit in reversed(mosi): | |
64 | self.data = self.data | bit[0] | |
65 | self.data <<= 1 |