[libsigrokdecode.git] / decoders / dali / pd.py

##
## This file is part of the libsigrokdecode project.
##
## Copyright (C) 2015 Jeremy Swanson <jeremy@rakocontrols.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, see <http://www.gnu.org/licenses/>.
##

import sigrokdecode as srd
from .lists import *

class SamplerateError(Exception):
    pass

class Decoder(srd.Decoder):
    api_version = 3
    id = 'dali'
    name = 'DALI'
    longname = 'Digital Addressable Lighting Interface'
    desc = 'Digital Addressable Lighting Interface (DALI) protocol.'
    license = 'gplv2+'
    inputs = ['logic']
    outputs = []
    tags = ['Embedded/industrial', 'Lighting']
    channels = (
        {'id': 'dali', 'name': 'DALI', 'desc': 'DALI data line'},
    )
    options = (
        {'id': 'polarity', 'desc': 'Polarity', 'default': 'active-low',
            'values': ('active-low', 'active-high')},
    )
    annotations = (
        ('bit', 'Bit'),
        ('startbit', 'Startbit'),
        ('sbit', 'Select bit'),
        ('ybit', 'Individual or group'),
        ('address', 'Address'),
        ('command', 'Command'),
        ('reply', 'Reply data'),
        ('raw', 'Raw data'),
    )
    annotation_rows = (
        ('bits', 'Bits', (0,)),
        ('raw', 'Raw data', (7,)),
        ('fields', 'Fields', (1, 2, 3, 4, 5, 6)),
    )

    def __init__(self):
        self.reset()

    def reset(self):
        self.samplerate = None
        self.samplenum = None
        self.edges, self.bits, self.ss_es_bits = [], [], []
        self.state = 'IDLE'
        self.dev_type = None

    def start(self):
        self.out_ann = self.register(srd.OUTPUT_ANN)
        self.old_dali = 1 if self.options['polarity'] == 'active-low' else 0

    def metadata(self, key, value):
        if key == srd.SRD_CONF_SAMPLERATE:
            self.samplerate = value
            # One bit: 833.33us (one half low, one half high).
            # This is how may samples are in 1TE.
            self.halfbit = int((self.samplerate * 0.0008333) / 2.0)

    def putb(self, bit1, bit2, data):
        ss, es = self.ss_es_bits[bit1][0], self.ss_es_bits[bit2][1]
        self.put(ss, es, self.out_ann, data)

    def handle_bits(self, length):
        a, c, f, g, b = 0, 0, 0, 0, self.bits
        # Individual raw bits.
        for i in range(length):
            if i == 0:
                ss = max(0, self.bits[0][0])
            else:
                ss = self.ss_es_bits[i - 1][1]
            es = self.bits[i][0] + (self.halfbit * 2)
            self.ss_es_bits.append([ss, es])
            self.putb(i, i, [0, ['%d' % self.bits[i][1]]])
        # Bits[0:0]: Startbit
        s = ['Startbit: %d' % b[0][1], 'ST: %d' % b[0][1], 'ST', 'S', 'S']
        self.putb(0, 0, [1, s])
        self.putb(0, 0, [7, s])
        # Bits[1:8]
        for i in range(8):
            f |= (b[1 + i][1] << (7 - i))
        if length == 9: # BACKWARD Frame
            s = ['Reply: %02X' % f, 'Rply: %02X' % f,
                 'Rep: %02X' % f, 'R: %02X' % f, 'R']
            self.putb(1, 8, [7, s])
            s = ['Reply: %d' % f, 'Rply: %d' % f,
                 'Rep: %d' % f, 'R: %d' % f, 'R']
            self.putb(1, 8, [6, s])
            return

        # FORWARD FRAME
        # Bits[9:16]: Command/data (MSB-first)
        for i in range(8):
            c |= (b[9 + i][1] << (7 - i))
        # Raw output
        s = ['Raw data: %02X' % f, 'Raw: %02X' % f,
             'Raw: %02X' % f, 'R: %02X' % f, 'R']
        self.putb(1, 8, [7, s])
        s = ['Raw data: %02X' % c, 'Raw: %02X' % c,
                'Raw: %02X' % c, 'R: %02X' % c, 'R']
        self.putb(9, 16, [7, s])

        # Bits[8:8]: Select bit
        # s = ['Selectbit: %d' % b[8][1], 'SEL: %d' % b[8][1], 'SEL', 'SE', 'S']
        if b[8][1] == 1:
            s = ['Command', 'Comd', 'COM', 'CO', 'C']
        else:
            s = ['Arc Power Level', 'Arc Pwr', 'ARC', 'AC', 'A']
        self.putb(8, 8, [1, s])

        # f &= 254 # Clear the select bit.
        if f >= 254: # BROADCAST
            s = ['BROADCAST', 'Brdcast', 'BC', 'B', 'B']
            self.putb(1, 7, [5, s])
        elif f >= 160: # Extended command 0b10100000
            if f == 0xC1: # DALI_ENABLE_DEVICE_TYPE_X
                self.dev_type = -1
            x = extended_commands.get(f, ['Unknown', 'Unk'])
            s = ['Extended Command: %02X (%s)' % (f, x[0]),
                 'XC: %02X (%s)' % (f, x[1]),
                 'XC: %02X' % f, 'X: %02X' % f, 'X']
            self.putb(1, 8, [5, s])
        elif f >= 128: # Group
            # Bits[1:1]: Ybit
            s = ['YBit: %d' % b[1][1], 'YB: %d' % b[1][1], 'YB', 'Y', 'Y']
            self.putb(1, 1, [3, s])
            g = (f & 127) >> 1
            s = ['Group address: %d' % g, 'Group: %d' % g,
                'GP: %d' % g, 'G: %d' % g, 'G']
            self.putb(2,7, [4, s])
        else: # Short address
            # Bits[1:1]: Ybit
            s = ['YBit: %d' % b[1][1], 'YB: %d' % b[1][1], 'YB', 'Y', 'Y']
            self.putb(1, 1, [3, s])
            a = f >> 1
            s = ['Short address: %d' % a, 'Addr: %d' % a,
                'Addr: %d' % a, 'A: %d' % a, 'A']
            self.putb(2, 7, [4, s])

        # Bits[9:16]: Command/data (MSB-first)
        if f >= 160 and f < 254:
            if self.dev_type == -1:
                self.dev_type = c
                s = ['Type: %d' % c, 'Typ: %d' % c,
                     'Typ: %d' % c, 'T: %d' % c, 'D']
            else:
                self.dev_type = None
                s = ['Data: %d' % c, 'Dat: %d' % c,
                     'Dat: %d' % c, 'D: %d' % c, 'D']
        elif b[8][1] == 1:
            un = c & 0xF0
            ln = c & 0x0F
            if un == 0x10: # Set scene command
                x = ['Recall Scene %d' % ln, 'SC %d' % ln]
            elif un == 0x40:
                x = ['Store DTR as Scene %d' % ln, 'SC %d = DTR' % ln]
            elif un == 0x50:
                x = ['Delete Scene %d' % ln, 'DEL SC %d' % ln]
            elif un == 0x60:
                x = ['Add to Group %d' % ln, 'Grp %d Add' % ln]
            elif un == 0x70:
                x = ['Remove from Group %d' % ln, 'Grp %d Del' % ln]
            elif un == 0xB0:
                x = ['Query Scene %d Level' % ln, 'Sc %d Level' % ln]
            elif c >= 224: # Application specific commands
                if self.dev_type == 8:
                    x = dali_device_type8.get(c, ['Unknown App', 'Unk'])
                else:
                    x = ['Application Specific Command %d' % c, 'App Cmd %d' % c]
            else:
                x = dali_commands.get(c, ['Unknown', 'Unk'])
            s = ['Command: %d (%s)' % (c, x[0]), 'Com: %d (%s)' % (c, x[1]),
                 'Com: %d' % c, 'C: %d' % c, 'C']
        else:
            s = ['Arc Power Level: %d' % c, 'Level: %d' % c,
                 'Lev: %d' % c, 'L: %d' % c, 'L']
        self.putb(9, 16, [5, s])

    def reset_decoder_state(self):
        self.edges, self.bits, self.ss_es_bits = [], [], []
        self.state = 'IDLE'

    def decode(self):
        if not self.samplerate:
            raise SamplerateError('Cannot decode without samplerate.')
        bit = 0
        while True:
            # TODO: Come up with more appropriate self.wait() conditions.
            (dali,) = self.wait()
            if self.options['polarity'] == 'active-high':
                dali ^= 1 # Invert.

            # State machine.
            if self.state == 'IDLE':
                # Wait for any edge (rising or falling).
                if self.old_dali == dali:
                    continue
                self.edges.append(self.samplenum)
                self.state = 'PHASE0'
                self.old_dali = dali
                continue

            if self.old_dali != dali:
                self.edges.append(self.samplenum)
            elif self.samplenum == (self.edges[-1] + int(self.halfbit * 1.5)):
                self.edges.append(self.samplenum - int(self.halfbit * 0.5))
            else:
                continue

            bit = self.old_dali
            if self.state == 'PHASE0':
                self.phase0 = bit
                self.state = 'PHASE1'
            elif self.state == 'PHASE1':
                if (bit == 1) and (self.phase0 == 1): # Stop bit.
                    if len(self.bits) == 17 or len(self.bits) == 9:
                        # Forward or Backward.
                        self.handle_bits(len(self.bits))
                    self.reset_decoder_state() # Reset upon errors.
                    continue
                else:
                    self.bits.append([self.edges[-3], bit])
                    self.state = 'PHASE0'

            self.old_dali = dali
Commit	Line	Data
b26c713b JS	1	##
	2	## This file is part of the libsigrokdecode project.
	3	##
	4	## Copyright (C) 2015 Jeremy Swanson <jeremy@rakocontrols.com>
	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 2 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	from .lists import *
	22
	23	class SamplerateError(Exception):
	24	pass
	25
	26	class Decoder(srd.Decoder):
02760d3b	27	api_version = 3
b26c713b JS	28	id = 'dali'
	29	name = 'DALI'
	30	longname = 'Digital Addressable Lighting Interface'
2787cf2a	31	desc = 'Digital Addressable Lighting Interface (DALI) protocol.'
b26c713b JS	32	license = 'gplv2+'
b26c713b JS	33	inputs = ['logic']
6cbba91f	34	outputs = []
d6d8a8a4	35	tags = ['Embedded/industrial', 'Lighting']
b26c713b JS	36	channels = (
	37	{'id': 'dali', 'name': 'DALI', 'desc': 'DALI data line'},
	38	)
	39	options = (
	40	{'id': 'polarity', 'desc': 'Polarity', 'default': 'active-low',
	41	'values': ('active-low', 'active-high')},
	42	)
	43	annotations = (
	44	('bit', 'Bit'),
	45	('startbit', 'Startbit'),
	46	('sbit', 'Select bit'),
	47	('ybit', 'Individual or group'),
	48	('address', 'Address'),
	49	('command', 'Command'),
	50	('reply', 'Reply data'),
	51	('raw', 'Raw data'),
	52	)
	53	annotation_rows = (
	54	('bits', 'Bits', (0,)),
	55	('raw', 'Raw data', (7,)),
37133b0a	56	('fields', 'Fields', (1, 2, 3, 4, 5, 6)),
b26c713b JS	57	)
	58
	59	def __init__(self):
10aeb8ea GS	60	self.reset()
	61
	62	def reset(self):
b26c713b JS	63	self.samplerate = None
	64	self.samplenum = None
	65	self.edges, self.bits, self.ss_es_bits = [], [], []
	66	self.state = 'IDLE'
44789507	67	self.dev_type = None
b26c713b JS	68
	69	def start(self):
	70	self.out_ann = self.register(srd.OUTPUT_ANN)
a8933728	71	self.old_dali = 1 if self.options['polarity'] == 'active-low' else 0
b26c713b JS	72
	73	def metadata(self, key, value):
	74	if key == srd.SRD_CONF_SAMPLERATE:
	75	self.samplerate = value
	76	# One bit: 833.33us (one half low, one half high).
	77	# This is how may samples are in 1TE.
	78	self.halfbit = int((self.samplerate * 0.0008333) / 2.0)
	79
	80	def putb(self, bit1, bit2, data):
	81	ss, es = self.ss_es_bits[bit1][0], self.ss_es_bits[bit2][1]
	82	self.put(ss, es, self.out_ann, data)
	83
	84	def handle_bits(self, length):
	85	a, c, f, g, b = 0, 0, 0, 0, self.bits
	86	# Individual raw bits.
	87	for i in range(length):
	88	if i == 0:
	89	ss = max(0, self.bits[0][0])
	90	else:
	91	ss = self.ss_es_bits[i - 1][1]
	92	es = self.bits[i][0] + (self.halfbit * 2)
	93	self.ss_es_bits.append([ss, es])
	94	self.putb(i, i, [0, ['%d' % self.bits[i][1]]])
	95	# Bits[0:0]: Startbit
	96	s = ['Startbit: %d' % b[0][1], 'ST: %d' % b[0][1], 'ST', 'S', 'S']
	97	self.putb(0, 0, [1, s])
	98	self.putb(0, 0, [7, s])
	99	# Bits[1:8]
	100	for i in range(8):
	101	f \|= (b[1 + i][1] << (7 - i))
	102	if length == 9: # BACKWARD Frame
	103	s = ['Reply: %02X' % f, 'Rply: %02X' % f,
	104	'Rep: %02X' % f, 'R: %02X' % f, 'R']
	105	self.putb(1, 8, [7, s])
	106	s = ['Reply: %d' % f, 'Rply: %d' % f,
	107	'Rep: %d' % f, 'R: %d' % f, 'R']
	108	self.putb(1, 8, [6, s])
	109	return
	110
	111	# FORWARD FRAME
	112	# Bits[9:16]: Command/data (MSB-first)
	113	for i in range(8):
	114	c \|= (b[9 + i][1] << (7 - i))
	115	# Raw output
	116	s = ['Raw data: %02X' % f, 'Raw: %02X' % f,
	117	'Raw: %02X' % f, 'R: %02X' % f, 'R']
	118	self.putb(1, 8, [7, s])
	119	s = ['Raw data: %02X' % c, 'Raw: %02X' % c,
	120	'Raw: %02X' % c, 'R: %02X' % c, 'R']
	121	self.putb(9, 16, [7, s])
	122
	123	# Bits[8:8]: Select bit
	124	# s = ['Selectbit: %d' % b[8][1], 'SEL: %d' % b[8][1], 'SEL', 'SE', 'S']
	125	if b[8][1] == 1:
	126	s = ['Command', 'Comd', 'COM', 'CO', 'C']
	127	else:
	128	s = ['Arc Power Level', 'Arc Pwr', 'ARC', 'AC', 'A']
	129	self.putb(8, 8, [1, s])
	130
	131	# f &= 254 # Clear the select bit.
	132	if f >= 254: # BROADCAST
	133	s = ['BROADCAST', 'Brdcast', 'BC', 'B', 'B']
	134	self.putb(1, 7, [5, s])
	135	elif f >= 160: # Extended command 0b10100000
136	if f == 0xC1: # DALI_ENABLE_DEVICE_TYPE_X
44789507 UH	137	self.dev_type = -1
44789507 UH	138	x = extended_commands.get(f, ['Unknown', 'Unk'])
b26c713b JS	139	s = ['Extended Command: %02X (%s)' % (f, x[0]),
	140	'XC: %02X (%s)' % (f, x[1]),
	141	'XC: %02X' % f, 'X: %02X' % f, 'X']
	142	self.putb(1, 8, [5, s])
	143	elif f >= 128: # Group
	144	# Bits[1:1]: Ybit
	145	s = ['YBit: %d' % b[1][1], 'YB: %d' % b[1][1], 'YB', 'Y', 'Y']
	146	self.putb(1, 1, [3, s])
	147	g = (f & 127) >> 1
	148	s = ['Group address: %d' % g, 'Group: %d' % g,
	149	'GP: %d' % g, 'G: %d' % g, 'G']
	150	self.putb(2,7, [4, s])
	151	else: # Short address
	152	# Bits[1:1]: Ybit
	153	s = ['YBit: %d' % b[1][1], 'YB: %d' % b[1][1], 'YB', 'Y', 'Y']
	154	self.putb(1, 1, [3, s])
	155	a = f >> 1
b26c713b JS	156	s = ['Short address: %d' % a, 'Addr: %d' % a,
	157	'Addr: %d' % a, 'A: %d' % a, 'A']
	158	self.putb(2, 7, [4, s])
	159
	160	# Bits[9:16]: Command/data (MSB-first)
	161	if f >= 160 and f < 254:
44789507 UH	162	if self.dev_type == -1:
44789507 UH	163	self.dev_type = c
b26c713b JS	164	s = ['Type: %d' % c, 'Typ: %d' % c,
	165	'Typ: %d' % c, 'T: %d' % c, 'D']
	166	else:
44789507	167	self.dev_type = None
b26c713b JS	168	s = ['Data: %d' % c, 'Dat: %d' % c,
	169	'Dat: %d' % c, 'D: %d' % c, 'D']
	170	elif b[8][1] == 1:
	171	un = c & 0xF0
	172	ln = c & 0x0F
	173	if un == 0x10: # Set scene command
	174	x = ['Recall Scene %d' % ln, 'SC %d' % ln]
	175	elif un == 0x40:
	176	x = ['Store DTR as Scene %d' % ln, 'SC %d = DTR' % ln]
	177	elif un == 0x50:
	178	x = ['Delete Scene %d' % ln, 'DEL SC %d' % ln]
	179	elif un == 0x60:
	180	x = ['Add to Group %d' % ln, 'Grp %d Add' % ln]
	181	elif un == 0x70:
	182	x = ['Remove from Group %d' % ln, 'Grp %d Del' % ln]
	183	elif un == 0xB0:
	184	x = ['Query Scene %d Level' % ln, 'Sc %d Level' % ln]
	185	elif c >= 224: # Application specific commands
44789507 UH	186	if self.dev_type == 8:
44789507 UH	187	x = dali_device_type8.get(c, ['Unknown App', 'Unk'])
b26c713b JS	188	else:
	189	x = ['Application Specific Command %d' % c, 'App Cmd %d' % c]
	190	else:
44789507	191	x = dali_commands.get(c, ['Unknown', 'Unk'])
b26c713b JS	192	s = ['Command: %d (%s)' % (c, x[0]), 'Com: %d (%s)' % (c, x[1]),
	193	'Com: %d' % c, 'C: %d' % c, 'C']
	194	else:
	195	s = ['Arc Power Level: %d' % c, 'Level: %d' % c,
	196	'Lev: %d' % c, 'L: %d' % c, 'L']
	197	self.putb(9, 16, [5, s])
	198
	199	def reset_decoder_state(self):
	200	self.edges, self.bits, self.ss_es_bits = [], [], []
	201	self.state = 'IDLE'
b26c713b	202
02760d3b	203	def decode(self):
b26c713b JS	204	if not self.samplerate:
b26c713b JS	205	raise SamplerateError('Cannot decode without samplerate.')
37133b0a	206	bit = 0
02760d3b UH	207	while True:
02760d3b UH	208	# TODO: Come up with more appropriate self.wait() conditions.
1b9ef18b	209	(dali,) = self.wait()
b26c713b	210	if self.options['polarity'] == 'active-high':
3b44d89e	211	dali ^= 1 # Invert.
b26c713b JS	212
	213	# State machine.
	214	if self.state == 'IDLE':
	215	# Wait for any edge (rising or falling).
3b44d89e	216	if self.old_dali == dali:
b26c713b JS	217	continue
	218	self.edges.append(self.samplenum)
	219	self.state = 'PHASE0'
3b44d89e	220	self.old_dali = dali
b26c713b JS	221	continue
b26c713b JS	222
3b44d89e	223	if self.old_dali != dali:
b26c713b	224	self.edges.append(self.samplenum)
3b44d89e	225	elif self.samplenum == (self.edges[-1] + int(self.halfbit * 1.5)):
b26c713b JS	226	self.edges.append(self.samplenum - int(self.halfbit * 0.5))
	227	else:
	228	continue
	229
a8933728	230	bit = self.old_dali
b26c713b JS	231	if self.state == 'PHASE0':
	232	self.phase0 = bit
	233	self.state = 'PHASE1'
	234	elif self.state == 'PHASE1':
37133b0a	235	if (bit == 1) and (self.phase0 == 1): # Stop bit.
b26c713b	236	if len(self.bits) == 17 or len(self.bits) == 9:
37133b0a	237	# Forward or Backward.
b26c713b JS	238	self.handle_bits(len(self.bits))
	239	self.reset_decoder_state() # Reset upon errors.
	240	continue
	241	else:
	242	self.bits.append([self.edges[-3], bit])
	243	self.state = 'PHASE0'
	244
3b44d89e	245	self.old_dali = dali