2 ## This file is part of the libsigrokdecode project.
4 ## Copyright (C) 2014 Matt Ranostay <mranostay@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 ( ANN_RGB, ) = range(1)
24 class Decoder(srd.Decoder):
27 name = 'RGB LED (SPI)'
28 longname = 'RGB LED string decoder (SPI)'
29 desc = 'RGB LED string protocol (RGB values clocked over SPI).'
46 self.out_ann = self.register(srd.OUTPUT_ANN)
48 def putg(self, ss, es, cls, text):
49 self.put(ss, es, self.out_ann, [cls, text])
51 def decode(self, ss, es, data):
54 # Grab the payload of three DATA packets. These hold the
55 # RGB values (in this very order).
59 if not self.mosi_bytes:
61 self.mosi_bytes.append(mosi)
62 if len(self.mosi_bytes) < 3:
65 # Emit annotations. Invalidate accumulated details as soon as
66 # they were processed, to prepare the next iteration.
67 ss_cmd, es_cmd = self.ss_cmd, es
69 red, green, blue = self.mosi_bytes[:3]
70 self.mosi_bytes.clear()
71 rgb_value = int(red) << 16 | int(green) << 8 | int(blue)
72 self.putg(ss_cmd, es_cmd, ANN_RGB, ['#{:06x}'.format(rgb_value)])