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authorUwe Hermann <uwe@hermann-uwe.de>2012-01-15 15:36:01 +0100
committerUwe Hermann <uwe@hermann-uwe.de>2012-01-15 18:18:23 +0100
commit64c29e28e0efa184319f7831b3eca18c7f73f7d0 (patch)
tree16b7c84aa9edefb61e01f70384ff280edb3f3483 /decoders/nunchuk.py
parentd0a0ed032e0120140a28e93ac42753786bf0087b (diff)
downloadlibsigrokdecode-64c29e28e0efa184319f7831b3eca18c7f73f7d0.tar.gz
libsigrokdecode-64c29e28e0efa184319f7831b3eca18c7f73f7d0.zip
srd: Each PD now has its own subdirectory.
Diffstat (limited to 'decoders/nunchuk.py')
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diff --git a/decoders/nunchuk.py b/decoders/nunchuk.py
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--- a/decoders/nunchuk.py
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-##
-## This file is part of the sigrok project.
-##
-## Copyright (C) 2010-2012 Uwe Hermann <uwe@hermann-uwe.de>
-##
-## 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
-##
-
-#
-# Nintendo Wii Nunchuk decoder
-#
-
-#
-# TODO: Description
-#
-# http://wiibrew.org/wiki/Wiimote/Extension_Controllers/Nunchuck
-# http://todbot.com/blog/2008/02/18/wiichuck-wii-nunchuck-adapter-available/
-# https://www.sparkfun.com/products/9281
-#
-
-import sigrokdecode as srd
-
-# States
-IDLE = 0
-START = 1
-NUNCHUK_SLAVE = 2
-INIT = 3
-INITIALIZED = 4
-
-class Decoder(srd.Decoder):
- id = 'nunchuk'
- name = 'Nunchuk'
- longname = 'Nintendo Wii Nunchuk'
- desc = 'Decodes the Nintendo Wii Nunchuk I2C-based protocol.'
- longdesc = '...'
- license = 'gplv2+'
- inputs = ['i2c']
- outputs = ['nunchuck']
- probes = [] # TODO
- options = {}
- annotations = [
- ['TODO', 'TODO'],
- ]
-
- def __init__(self, **kwargs):
- self.state = IDLE # TODO: Can we assume a certain initial state?
- self.sx = self.sy = self.ax = self.ay = self.az = self.bz = self.bc = 0
- self.databytecount = 0
-
- def start(self, metadata):
- # self.out_proto = self.add(srd.OUTPUT_PROTO, 'nunchuk')
- self.out_ann = self.add(srd.OUTPUT_ANN, 'nunchuk')
-
- def report(self):
- pass
-
- def decode(self, ss, es, data):
-
- cmd, databyte, ack_bit = data
-
- if cmd == 'START': # TODO: Handle 'Sr' here, too?
- self.state = START
-
- elif cmd == 'START REPEAT':
- pass # FIXME
-
- elif cmd == 'ADDRESS READ':
- # TODO: Error/Warning, not supported, I think.
- pass
-
- elif cmd == 'ADDRESS WRITE':
- # The Wii Nunchuk always has slave address 0x54.
- # TODO: Handle this stuff more correctly.
- if databyte == 0x54:
- pass # TODO
- else:
- pass # TODO: What to do here? Ignore? Error?
-
- elif cmd == 'DATA READ' and self.state == INITIALIZED:
- if self.databytecount == 0:
- self.sx = databyte
- elif self.databytecount == 1:
- self.sy = databyte
- elif self.databytecount == 2:
- self.ax = databyte << 2
- elif self.databytecount == 3:
- self.ay = databyte << 2
- elif self.databytecount == 4:
- self.az = databyte << 2
- elif self.databytecount == 5:
- self.bz = (databyte & (1 << 0)) >> 0
- self.bc = (databyte & (1 << 1)) >> 1
- self.ax |= (databyte & (3 << 2)) >> 2
- self.ay |= (databyte & (3 << 4)) >> 4
- self.az |= (databyte & (3 << 6)) >> 6
-
- d = 'sx = 0x%02x, sy = 0x%02x, ax = 0x%02x, ay = 0x%02x, ' \
- 'az = 0x%02x, bz = 0x%02x, bc = 0x%02x' % (self.sx, \
- self.sy, self.ax, self.ay, self.az, self.bz, self.bc)
- self.put(ss, es, self.out_ann, [0, [d]])
-
- self.sx = self.sy = self.ax = self.ay = self.az = 0
- self.bz = self.bc = 0
- else:
- pass # TODO
-
- if 0 <= self.databytecount <= 5:
- self.databytecount += 1
-
- # TODO: If 6 bytes read -> save and reset
-
- # TODO
- elif cmd == 'DATA READ' and self.state != INITIALIZED:
- pass
-
- elif cmd == 'DATA WRITE':
- if self.state == IDLE:
- self.state = INITIALIZED
- return
-
- if databyte == 0x40 and self.state == START:
- self.state = INIT
- elif databyte == 0x00 and self.state == INIT:
- self.put(ss, es, self.out_ann, [0, ['Initialize nunchuk']])
- self.state = INITIALIZED
- else:
- pass # TODO
-
- elif cmd == 'STOP':
- self.state = INITIALIZED
- self.databytecount = 0
-