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##
## This file is part of the libsigrokdecode project.
##
## Copyright (C) 2014 Matt Ranostay <mranostay@gmail.com>
##
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with this program; if not, write to the Free Software
## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
##
import sigrokdecode as srd
class Decoder(srd.Decoder):
api_version = 2
id = 'rgb_led_spi'
name = 'RGB LED (SPI)'
longname = 'RGB LED string decoder (SPI)'
desc = 'Generic RGB LED string protocol (RGB values clocked over SPI).'
license = 'gplv2'
inputs = ['spi']
outputs = ['rgb_led_spi']
annotations = (
('rgb', 'RGB values'),
)
def __init__(self, **kwargs):
self.cmd_ss, self.cmd_es = 0, 0
self.mosi_bytes = []
def start(self):
self.out_ann = self.register(srd.OUTPUT_ANN)
def putx(self, data):
self.put(self.cmd_ss, self.cmd_es, self.out_ann, data)
def decode(self, ss, es, data):
ptype, mosi, miso = data
# Only care about data packets.
if ptype != 'DATA':
return
self.ss, self.es = ss, es
if len(self.mosi_bytes) == 0:
self.cmd_ss = ss
self.mosi_bytes.append(mosi)
# RGB value == 3 bytes
if len(self.mosi_bytes) != 3:
return
red, green, blue = self.mosi_bytes
rgb_value = int(red) << 16
rgb_value |= int(green) << 8
rgb_value |= int(blue)
self.cmd_es = es
self.putx([0, ['#%.6x' % rgb_value]])
self.mosi_bytes = []
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