[libsigrokdecode.git] / decoders / onewire / onewire.py

##
## This file is part of the sigrok project.
##
## Copyright (C) 2011-2012 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
##

# 1-Wire protocol decoder

import sigrokdecode as srd

# Annotation feed formats
ANN_LINK     = 0
ANN_NETWORK  = 1
ANN_TRANSFER = 2

class Decoder(srd.Decoder):
    api_version = 1
    id = 'onewire'
    name = '1-Wire'
    longname = ''
    desc = '1-Wire bus and MicroLan'
    license = 'gplv2+'
    inputs = ['logic']
    outputs = ['onewire']
    probes = [
        {'id': 'owr', 'name': 'OWR', 'desc': '1-Wire bus'},
    ]
    optional_probes = [
        {'id': 'pwr', 'name': 'PWR', 'desc': '1-Wire power'},
    ]
    options = {
        'overdrive': ['Overdrive', 0],
    }
    annotations = [
        ['Link', 'Link layer events (reset, presence, bit slots)'],
        ['Network', 'Network layer events (device addressing)'],
        ['Transfer', 'Transfer layer events'],
    ]

    def __init__(self, **kwargs):
        # Common variables
        self.samplenum = 0
        # Link layer variables
        self.lnk_state   = 'WAIT FOR FALLING EDGE'
        self.lnk_event   = 'NONE'
        self.lnk_fall    = 0
        self.lnk_present = 0
        self.lnk_bit     = 0
        # Network layer variables
        self.net_state   = 'ROM COMMAND'
        self.net_event   = 'NONE'
        self.net_cnt     = 0
        self.net_search  = "P"
        self.net_data_p  = 0x0
        self.net_data_n  = 0x0
        self.net_data    = 0x0
        # Transport layer variables
        self.trn_state   = 'WAIT FOR EVENT'
        self.trn_event   = 'NONE'

    def start(self, metadata):
        self.samplerate = metadata['samplerate']
        self.out_proto = self.add(srd.OUTPUT_PROTO, 'onewire')
        self.out_ann   = self.add(srd.OUTPUT_ANN  , 'onewire')

        # The width of the 1-Wire time base (30us) in number of samples.
        # TODO: optimize this value
        self.time_base = float(self.samplerate) * float(0.000030)
        self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_LINK, ['time_base = %d' % self.time_base]])

    def report(self):
        pass

    def decode(self, ss, es, data):
        for (self.samplenum, (owr, pwr)) in data:
#            print ("DEBUG: sample = %d, owr = %d, pwr = %d, lnk_fall = %d, lnk_state = %s" % (self.samplenum, owr, pwr, self.lnk_fall, self.lnk_state))

            # Data link layer

            # Clear events.
            self.lnk_event = "NONE"
            # State machine.
            if self.lnk_state == 'WAIT FOR FALLING EDGE':
                # The start of a cycle is a falling edge.
                if (owr == 0):
                    # Save the sample number for the falling edge.
                    self.lnk_fall = self.samplenum
                    # Go to waiting for sample time
                    self.lnk_state = 'WAIT FOR DATA SAMPLE'
            elif self.lnk_state == 'WAIT FOR DATA SAMPLE':
                # Data should be sample one 'time unit' after a falling edge
                if (self.samplenum - self.lnk_fall == 0.5*self.time_base):
                    self.lnk_bit  = owr & 0x1
                    self.lnk_event = "DATA BIT"
                    if (self.lnk_bit) :  self.lnk_state = 'WAIT FOR FALLING EDGE'
                    else              :  self.lnk_state = 'WAIT FOR RISING EDGE'
                    self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_LINK, ['BIT: %01x' % self.lnk_bit]])
            elif self.lnk_state == 'WAIT FOR RISING EDGE':
                # The end of a cycle is a rising edge.
                if (owr == 1):
                    # A reset cycle is longer than 8T.
                    if (self.samplenum - self.lnk_fall > 8*self.time_base):
                        # Save the sample number for the falling edge.
                        self.lnk_rise = self.samplenum
                        # Send a reset event to the next protocol layer.
                        self.lnk_event = "RESET"
                        self.lnk_state = "WAIT FOR PRESENCE DETECT"
                        self.put(self.lnk_fall, self.samplenum, self.out_proto, ['RESET'])
                        self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_LINK   , ['RESET']])
                        self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['RESET']])
                        # Reset the timer.
                        self.lnk_fall = self.samplenum
                    # Otherwise this is assumed to be a data bit.
                    else :
                        self.lnk_state = "WAIT FOR FALLING EDGE"
            elif self.lnk_state == 'WAIT FOR PRESENCE DETECT':
                # Data should be sample one 'time unit' after a falling edge
                if (self.samplenum - self.lnk_rise == 2.5*self.time_base):
                    self.lnk_present = owr & 0x1
                    # Save the sample number for the falling edge.
                    if not (self.lnk_present) :  self.lnk_fall = self.samplenum
                    # create presence detect event
                    #self.lnk_event   = "PRESENCE DETECT"
                    if (self.lnk_present) :  self.lnk_state = 'WAIT FOR FALLING EDGE'
                    else                  :  self.lnk_state = 'WAIT FOR RISING EDGE'
                    present_str = "False" if self.lnk_present else "True"
                    self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_LINK   , ['PRESENCE: ' + present_str]])
                    self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['PRESENCE: ' + present_str]])
            else:
                raise Exception('Invalid lnk_state: %d' % self.lnk_state)

            # Network layer
            
            # Clear events.
            self.net_event = "RESET"
            # State machine.
            if (self.lnk_event == "RESET"):
                self.net_state = "ROM COMMAND"
                self.net_search = "P"
                self.net_cnt    = 0
            elif (self.lnk_event == "DATA BIT"):
                if (self.net_state == "ROM COMMAND"):
                    if (self.collect_data(8)):
#                        self.put(self.lnk_fall, self.samplenum,
#                                 self.out_proto, ['ROM COMMAND', self.net_data])
                        self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: 0x%02x' % self.net_data]])
                        if   (self.net_data == 0x33):
                            # READ ROM
                            self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'READ ROM\'']])
                            self.net_state = "ADDRESS"
                        elif (self.net_data == 0x0f):
                            # READ ROM TODO
                            self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'READ ROM ???\'']])
                            self.net_state = "ADDRESS"
                        elif (self.net_data == 0xcc):
                            # SKIP ROM
                            self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'SKIP ROM\'']])
                            self.net_state = "CONTROL COMMAND"
                        elif (self.net_data == 0x55):
                            # MATCH ROM
                            self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'MATCH ROM\'']])
                            self.net_state = "ADDRESS"
                        elif (self.net_data == 0xf0):
                            # SEARCH ROM
                            self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'SEARCH ROM\'']])
                            self.net_state = "SEARCH"
                        elif (self.net_data == 0x3c):
                            # OVERDRIVE SKIP ROM
                            self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'OVERDRIVE SKIP ROM\'']])
                            self.net_state = "CONTROL COMMAND"
                        elif (self.net_data == 0x69):
                            # OVERDRIVE MATCH ROM
                            self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'OVERDRIVE MATCH ROM\'']])
                            self.net_state = "ADDRESS"
                elif (self.net_state == "ADDRESS"):
                    # family code (1B) + serial number (6B) + CRC (1B)
                    if (self.collect_data((1+6+1)*8)):
                        self.net_address = self.net_data & 0xffffffffffffffff
                        self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM: 0x%016x' % self.net_address]])
                        self.net_state = "CONTROL COMMAND"
                elif (self.net_state == "SEARCH"):
                    # family code (1B) + serial number (6B) + CRC (1B)
                    if (self.collect_search((1+6+1)*8)):
                        self.net_address = self.net_data & 0xffffffffffffffff
                        self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM: 0x%016x' % self.net_address]])
                        self.net_state = "CONTROL COMMAND"
                elif (self.net_state == "CONTROL COMMAND"):
                    if (self.collect_data(8)):
#                        self.put(self.lnk_fall, self.samplenum,
#                                 self.out_proto, ['LNK: COMMAND', self.net_data])
                        self.put(self.lnk_fall, self.samplenum, self.out_ann,
                                 [ANN_TRANSFER, ['TRANSFER: FUNCTION COMMAND: 0x' + hex(self.net_data)]])
                        if   (self.net_data == 0x48):
                            # COPY SCRATCHPAD
                            self.net_state = "TODO"
                        elif (self.net_data == 0x4e):
                            # WRITE SCRATCHPAD
                            self.net_state = "TODO"
                        elif (self.net_data == 0xbe):
                            # READ SCRATCHPAD
                            self.net_state = "TODO"
                        elif (self.net_data == 0xb8):
                            # RECALL E2
                            self.net_state = "TODO"
                        elif (self.net_data == 0xb4):
                            # READ POWER SUPPLY
                            self.net_state = "TODO"
                        else:
                            # unsupported commands
                            self.net_state = "UNDEFINED"
                elif (self.net_state == "UNDEFINED"):
                    pass
                else:
                    raise Exception('Invalid net_state: %s' % self.net_state)
            elif (self.lnk_event != "NONE"):
                raise Exception('Invalid lnk_event: %s' % self.lnk_event)


    # Link/Network layer data collector
    def collect_data (self, length):
        #print ("DEBUG: BIT=%d t0=%d t+=%d" % (self.lnk_bit, self.lnk_fall, self.samplenum))
        self.net_data = self.net_data & ~(1 << self.net_cnt) | (self.lnk_bit << self.net_cnt)
        self.net_cnt  = self.net_cnt + 1
        if (self.net_cnt == length):
            self.net_data = self.net_data & ((1<<length)-1)
            self.net_cnt  = 0
            return (1)
        else:
            return (0)

    # Link/Network layer search collector
    def collect_search (self, length):
        #print ("DEBUG: SEARCH=%s BIT=%d t0=%d t+=%d" % (self.net_search, self.lnk_bit, self.lnk_fall, self.samplenum))
        if   (self.net_search == "P"):
          self.net_data_p = self.net_data_p & ~(1 << self.net_cnt) | (self.lnk_bit << self.net_cnt)
          self.net_search = "N"
        elif (self.net_search == "N"):
          self.net_data_n = self.net_data_n & ~(1 << self.net_cnt) | (self.lnk_bit << self.net_cnt)
          self.net_search = "D"
        elif (self.net_search == "D"):
          self.net_data   = self.net_data   & ~(1 << self.net_cnt) | (self.lnk_bit << self.net_cnt)
          self.net_search = "P"
          self.net_cnt    = self.net_cnt + 1
        if (self.net_cnt == length):
            self.net_data_p = self.net_data_p & ((1<<length)-1)
            self.net_data_n = self.net_data_n & ((1<<length)-1)
            self.net_data   = self.net_data   & ((1<<length)-1)
            self.net_search = "P"
            self.net_cnt    = 0
            return (1)
        else:
            return (0)
Commit	Line	Data
51990c45 IJ	1	##
	2	## This file is part of the sigrok project.
	3	##
	4	## Copyright (C) 2011-2012 Uwe Hermann <uwe@hermann-uwe.de>
	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, write to the Free Software
	18	## Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
	19	##
	20
	21	# 1-Wire protocol decoder
	22
	23	import sigrokdecode as srd
	24
	25	# Annotation feed formats
0bd62eb1 IJ	26	ANN_LINK = 0
	27	ANN_NETWORK = 1
	28	ANN_TRANSFER = 2
51990c45 IJ	29
	30	class Decoder(srd.Decoder):
	31	api_version = 1
	32	id = 'onewire'
	33	name = '1-Wire'
	34	longname = ''
	35	desc = '1-Wire bus and MicroLan'
	36	license = 'gplv2+'
	37	inputs = ['logic']
	38	outputs = ['onewire']
	39	probes = [
	40	{'id': 'owr', 'name': 'OWR', 'desc': '1-Wire bus'},
	41	]
	42	optional_probes = [
	43	{'id': 'pwr', 'name': 'PWR', 'desc': '1-Wire power'},
	44	]
	45	options = {
	46	'overdrive': ['Overdrive', 0],
	47	}
	48	annotations = [
0bd62eb1 IJ	49	['Link', 'Link layer events (reset, presence, bit slots)'],
	50	['Network', 'Network layer events (device addressing)'],
	51	['Transfer', 'Transfer layer events'],
51990c45 IJ	52	]
51990c45 IJ	53
51990c45 IJ	54	def __init__(self, **kwargs):
	55	# Common variables
	56	self.samplenum = 0
	57	# Link layer variables
af623785 IJ	58	self.lnk_state = 'WAIT FOR FALLING EDGE'
	59	self.lnk_event = 'NONE'
	60	self.lnk_fall = 0
	61	self.lnk_present = 0
	62	self.lnk_bit = 0
51990c45	63	# Network layer variables
d2b6e141	64	self.net_state = 'ROM COMMAND'
af623785 IJ	65	self.net_event = 'NONE'
af623785 IJ	66	self.net_cnt = 0
d2b6e141 IJ	67	self.net_search = "P"
	68	self.net_data_p = 0x0
	69	self.net_data_n = 0x0
	70	self.net_data = 0x0
51990c45	71	# Transport layer variables
af623785 IJ	72	self.trn_state = 'WAIT FOR EVENT'
af623785 IJ	73	self.trn_event = 'NONE'
51990c45 IJ	74
	75	def start(self, metadata):
	76	self.samplerate = metadata['samplerate']
	77	self.out_proto = self.add(srd.OUTPUT_PROTO, 'onewire')
4fe36ec3	78	self.out_ann = self.add(srd.OUTPUT_ANN , 'onewire')
51990c45 IJ	79
	80	# The width of the 1-Wire time base (30us) in number of samples.
	81	# TODO: optimize this value
af623785	82	self.time_base = float(self.samplerate) * float(0.000030)
0bd62eb1	83	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_LINK, ['time_base = %d' % self.time_base]])
51990c45 IJ	84
	85	def report(self):
	86	pass
	87
51990c45	88	def decode(self, ss, es, data):
af623785 IJ	89	for (self.samplenum, (owr, pwr)) in data:
af623785 IJ	90	# print ("DEBUG: sample = %d, owr = %d, pwr = %d, lnk_fall = %d, lnk_state = %s" % (self.samplenum, owr, pwr, self.lnk_fall, self.lnk_state))
51990c45	91
51990c45	92	# Data link layer
39a0219a IJ	93
39a0219a IJ	94	# Clear events.
af623785	95	self.lnk_event = "NONE"
39a0219a	96	# State machine.
51990c45 IJ	97	if self.lnk_state == 'WAIT FOR FALLING EDGE':
51990c45 IJ	98	# The start of a cycle is a falling edge.
39a0219a IJ	99	if (owr == 0):
	100	# Save the sample number for the falling edge.
	101	self.lnk_fall = self.samplenum
51990c45	102	# Go to waiting for sample time
39a0219a IJ	103	self.lnk_state = 'WAIT FOR DATA SAMPLE'
39a0219a IJ	104	elif self.lnk_state == 'WAIT FOR DATA SAMPLE':
51990c45	105	# Data should be sample one 'time unit' after a falling edge
d2b6e141	106	if (self.samplenum - self.lnk_fall == 0.5*self.time_base):
51990c45	107	self.lnk_bit = owr & 0x1
39a0219a IJ	108	self.lnk_event = "DATA BIT"
	109	if (self.lnk_bit) : self.lnk_state = 'WAIT FOR FALLING EDGE'
	110	else : self.lnk_state = 'WAIT FOR RISING EDGE'
0bd62eb1	111	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_LINK, ['BIT: %01x' % self.lnk_bit]])
51990c45 IJ	112	elif self.lnk_state == 'WAIT FOR RISING EDGE':
51990c45 IJ	113	# The end of a cycle is a rising edge.
39a0219a	114	if (owr == 1):
af623785	115	# A reset cycle is longer than 8T.
39a0219a IJ	116	if (self.samplenum - self.lnk_fall > 8*self.time_base):
	117	# Save the sample number for the falling edge.
	118	self.lnk_rise = self.samplenum
af623785	119	# Send a reset event to the next protocol layer.
39a0219a IJ	120	self.lnk_event = "RESET"
39a0219a IJ	121	self.lnk_state = "WAIT FOR PRESENCE DETECT"
0bd62eb1 IJ	122	self.put(self.lnk_fall, self.samplenum, self.out_proto, ['RESET'])
	123	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_LINK , ['RESET']])
	124	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['RESET']])
af623785 IJ	125	# Reset the timer.
	126	self.lnk_fall = self.samplenum
	127	# Otherwise this is assumed to be a data bit.
	128	else :
	129	self.lnk_state = "WAIT FOR FALLING EDGE"
39a0219a IJ	130	elif self.lnk_state == 'WAIT FOR PRESENCE DETECT':
	131	# Data should be sample one 'time unit' after a falling edge
	132	if (self.samplenum - self.lnk_rise == 2.5*self.time_base):
af623785	133	self.lnk_present = owr & 0x1
cf0f9df0 IJ	134	# Save the sample number for the falling edge.
	135	if not (self.lnk_present) : self.lnk_fall = self.samplenum
	136	# create presence detect event
af623785	137	#self.lnk_event = "PRESENCE DETECT"
cf0f9df0 IJ	138	if (self.lnk_present) : self.lnk_state = 'WAIT FOR FALLING EDGE'
cf0f9df0 IJ	139	else : self.lnk_state = 'WAIT FOR RISING EDGE'
0bd62eb1 IJ	140	present_str = "False" if self.lnk_present else "True"
	141	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_LINK , ['PRESENCE: ' + present_str]])
	142	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['PRESENCE: ' + present_str]])
39a0219a	143	else:
0631e33d	144	raise Exception('Invalid lnk_state: %d' % self.lnk_state)
39a0219a IJ	145
	146	# Network layer
	147
	148	# Clear events.
	149	self.net_event = "RESET"
	150	# State machine.
4fe36ec3	151	if (self.lnk_event == "RESET"):
d2b6e141 IJ	152	self.net_state = "ROM COMMAND"
	153	self.net_search = "P"
	154	self.net_cnt = 0
4fe36ec3	155	elif (self.lnk_event == "DATA BIT"):
d2b6e141 IJ	156	if (self.net_state == "ROM COMMAND"):
	157	if (self.collect_data(8)):
	158	# self.put(self.lnk_fall, self.samplenum,
0bd62eb1 IJ	159	# self.out_proto, ['ROM COMMAND', self.net_data])
0bd62eb1 IJ	160	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: 0x%02x' % self.net_data]])
de2f5328	161	if (self.net_data == 0x33):
d2b6e141	162	# READ ROM
0bd62eb1	163	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'READ ROM\'']])
d2b6e141	164	self.net_state = "ADDRESS"
de2f5328 IJ	165	elif (self.net_data == 0x0f):
de2f5328 IJ	166	# READ ROM TODO
0bd62eb1	167	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'READ ROM ???\'']])
de2f5328	168	self.net_state = "ADDRESS"
d2b6e141 IJ	169	elif (self.net_data == 0xcc):
d2b6e141 IJ	170	# SKIP ROM
0bd62eb1	171	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'SKIP ROM\'']])
d2b6e141 IJ	172	self.net_state = "CONTROL COMMAND"
	173	elif (self.net_data == 0x55):
	174	# MATCH ROM
0bd62eb1	175	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'MATCH ROM\'']])
d2b6e141 IJ	176	self.net_state = "ADDRESS"
	177	elif (self.net_data == 0xf0):
	178	# SEARCH ROM
0bd62eb1	179	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'SEARCH ROM\'']])
d2b6e141 IJ	180	self.net_state = "SEARCH"
	181	elif (self.net_data == 0x3c):
	182	# OVERDRIVE SKIP ROM
0bd62eb1	183	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'OVERDRIVE SKIP ROM\'']])
d2b6e141 IJ	184	self.net_state = "CONTROL COMMAND"
	185	elif (self.net_data == 0x69):
	186	# OVERDRIVE MATCH ROM
0bd62eb1	187	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM COMMAND: \'OVERDRIVE MATCH ROM\'']])
d2b6e141 IJ	188	self.net_state = "ADDRESS"
	189	elif (self.net_state == "ADDRESS"):
	190	# family code (1B) + serial number (6B) + CRC (1B)
	191	if (self.collect_data((1+6+1)*8)):
de2f5328	192	self.net_address = self.net_data & 0xffffffffffffffff
0bd62eb1	193	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM: 0x%016x' % self.net_address]])
d2b6e141 IJ	194	self.net_state = "CONTROL COMMAND"
	195	elif (self.net_state == "SEARCH"):
	196	# family code (1B) + serial number (6B) + CRC (1B)
	197	if (self.collect_search((1+6+1)*8)):
de2f5328	198	self.net_address = self.net_data & 0xffffffffffffffff
0bd62eb1	199	self.put(self.lnk_fall, self.samplenum, self.out_ann, [ANN_NETWORK, ['ROM: 0x%016x' % self.net_address]])
d2b6e141 IJ	200	self.net_state = "CONTROL COMMAND"
	201	elif (self.net_state == "CONTROL COMMAND"):
	202	if (self.collect_data(8)):
	203	# self.put(self.lnk_fall, self.samplenum,
	204	# self.out_proto, ['LNK: COMMAND', self.net_data])
	205	self.put(self.lnk_fall, self.samplenum, self.out_ann,
0bd62eb1	206	[ANN_TRANSFER, ['TRANSFER: FUNCTION COMMAND: 0x' + hex(self.net_data)]])
de2f5328	207	if (self.net_data == 0x48):
d2b6e141 IJ	208	# COPY SCRATCHPAD
	209	self.net_state = "TODO"
	210	elif (self.net_data == 0x4e):
	211	# WRITE SCRATCHPAD
	212	self.net_state = "TODO"
	213	elif (self.net_data == 0xbe):
	214	# READ SCRATCHPAD
	215	self.net_state = "TODO"
	216	elif (self.net_data == 0xb8):
	217	# RECALL E2
	218	self.net_state = "TODO"
	219	elif (self.net_data == 0xb4):
	220	# READ POWER SUPPLY
	221	self.net_state = "TODO"
de2f5328 IJ	222	else:
	223	# unsupported commands
	224	self.net_state = "UNDEFINED"
	225	elif (self.net_state == "UNDEFINED"):
	226	pass
39a0219a	227	else:
d2b6e141 IJ	228	raise Exception('Invalid net_state: %s' % self.net_state)
d2b6e141 IJ	229	elif (self.lnk_event != "NONE"):
af623785	230	raise Exception('Invalid lnk_event: %s' % self.lnk_event)
51990c45	231
51990c45	232
d2b6e141 IJ	233	# Link/Network layer data collector
	234	def collect_data (self, length):
	235	#print ("DEBUG: BIT=%d t0=%d t+=%d" % (self.lnk_bit, self.lnk_fall, self.samplenum))
	236	self.net_data = self.net_data & ~(1 << self.net_cnt) \| (self.lnk_bit << self.net_cnt)
	237	self.net_cnt = self.net_cnt + 1
	238	if (self.net_cnt == length):
	239	self.net_data = self.net_data & ((1<<length)-1)
	240	self.net_cnt = 0
d2b6e141 IJ	241	return (1)
	242	else:
	243	return (0)
	244
	245	# Link/Network layer search collector
	246	def collect_search (self, length):
	247	#print ("DEBUG: SEARCH=%s BIT=%d t0=%d t+=%d" % (self.net_search, self.lnk_bit, self.lnk_fall, self.samplenum))
	248	if (self.net_search == "P"):
	249	self.net_data_p = self.net_data_p & ~(1 << self.net_cnt) \| (self.lnk_bit << self.net_cnt)
	250	self.net_search = "N"
	251	elif (self.net_search == "N"):
	252	self.net_data_n = self.net_data_n & ~(1 << self.net_cnt) \| (self.lnk_bit << self.net_cnt)
	253	self.net_search = "D"
	254	elif (self.net_search == "D"):
	255	self.net_data = self.net_data & ~(1 << self.net_cnt) \| (self.lnk_bit << self.net_cnt)
	256	self.net_search = "P"
	257	self.net_cnt = self.net_cnt + 1
	258	if (self.net_cnt == length):
	259	self.net_data_p = self.net_data_p & ((1<<length)-1)
	260	self.net_data_n = self.net_data_n & ((1<<length)-1)
	261	self.net_data = self.net_data & ((1<<length)-1)
	262	self.net_search = "P"
	263	self.net_cnt = 0
d2b6e141 IJ	264	return (1)
	265	else:
	266	return (0)