)
def __init__(self):
- self.samplerate = 8e6 # None
- self.secs_per_sample = float(1) / float(self.samplerate)
+ self.samplerate = None
self.request = {}
self.request_id = 0
self.transaction_state = 'IDLE'
- self.transaction_ss = None
- self.transaction_es = None
+ self.ss_transaction = None
+ self.es_transaction = None
self.transaction_ep = None
self.transaction_addr = None
self.wrote_pcap_header = False
self.put(ss, es, self.out_ann, data)
def putb(self, ts, data):
- self.put(ts, ts, self.out_bin, data)
+ self.put(ts, ts, self.out_binary, data)
def pcap_global_header(self):
# See https://wiki.wireshark.org/Development/LibpcapFileFormat.
self.secs_per_sample = float(1) / float(self.samplerate)
def start(self):
- self.out_bin = self.register(srd.OUTPUT_BINARY)
+ self.out_binary = self.register(srd.OUTPUT_BINARY)
self.out_ann = self.register(srd.OUTPUT_ANN)
def handle_transfer(self):
request_started = 0
- request_end = self.handshake in ('ACK', 'STALL')
+ request_end = self.handshake in ('ACK', 'STALL', 'timeout')
ep = self.transaction_ep
addr = self.transaction_addr
if not (addr, ep) in self.request:
self.request[(addr, ep)] = {'setup_data': [], 'data': [],
- 'type': None, 'ss': self.transaction_ss, 'es': None,
+ 'type': None, 'ss': self.ss_transaction, 'es': None,
'id': self.request_id, 'addr': addr, 'ep': ep}
self.request_id += 1
request_started = 1
if request['type'] in (None, 'BULK IN') and self.transaction_type == 'IN':
request['type'] = 'BULK IN'
request['data'] += self.transaction_data
- request['es'] = self.transaction_es
+ request['es'] = self.es_transaction
self.handle_request(request_started, request_end)
elif request['type'] in (None, 'BULK OUT') and self.transaction_type == 'OUT':
request['type'] = 'BULK OUT'
request['data'] += self.transaction_data
- request['es'] = self.transaction_es
+ request['es'] = self.es_transaction
self.handle_request(request_started, request_end)
# CONTROL, SETUP stage
- elif request['type'] == None and self.transaction_type == 'SETUP':
+ elif request['type'] is None and self.transaction_type == 'SETUP':
request['setup_data'] = self.transaction_data
request['wLength'] = struct.unpack('<H',
bytes(self.transaction_data[6:8]))[0]
# CONTROL, STATUS stage
elif request['type'] == 'SETUP IN' and self.transaction_type == 'OUT':
- request['es'] = self.transaction_es
+ request['es'] = self.es_transaction
self.handle_request(0, request_end)
elif request['type'] == 'SETUP OUT' and self.transaction_type == 'IN':
- request['es'] = self.transaction_es
+ request['es'] = self.es_transaction
self.handle_request(0, request_end)
else:
def write_pcap_header(self):
if not self.wrote_pcap_header:
- self.put(0, 0, self.out_bin, (0, self.pcap_global_header()))
+ self.put(0, 0, self.out_binary, [0, self.pcap_global_header()])
self.wrote_pcap_header = True
def request_summary(self, request):
# Issue PCAP 'SUBMIT' packet.
ts = self.ts_from_samplenum(ss)
pkt = pcap_usb_pkt(request, ts, True)
- self.putb(ss, (0, pkt.record_header()))
- self.putb(ss, (0, pkt.packet()))
+ self.putb(ss, [0, pkt.record_header()])
+ self.putb(ss, [0, pkt.packet()])
if request_end == 1:
# Write annotation.
# Issue PCAP 'COMPLETE' packet.
ts = self.ts_from_samplenum(es)
pkt = pcap_usb_pkt(request, ts, False)
- self.putb(ss, (0, pkt.record_header()))
- self.putb(ss, (0, pkt.packet()))
+ self.putb(ss, [0, pkt.record_header()])
+ self.putb(ss, [0, pkt.packet()])
del self.request[(addr, ep)]
def decode(self, ss, es, data):
if pcategory == 'TOKEN':
if pname == 'SOF':
return
+ if self.transaction_state == 'TOKEN RECEIVED':
+ transaction_timeout = self.es_transaction
+ # Token length is 35 bits, timeout is 16..18 bit times
+ # (USB 2.0 7.1.19.1).
+ transaction_timeout += int((self.es_transaction - self.ss_transaction) / 2)
+ if ss > transaction_timeout:
+ self.es_transaction = transaction_timeout
+ self.handshake = 'timeout'
+ self.handle_transfer()
+ self.transaction_state = 'IDLE'
+
if self.transaction_state != 'IDLE':
self.putr(ss, es, [4, ['ERR: received %s token in state %s' %
(pname, self.transaction_state)]])
sync, pid, addr, ep, crc5 = pinfo
self.transaction_data = []
- self.transaction_ss = ss
+ self.ss_transaction = ss
+ self.es_transaction = es
self.transaction_state = 'TOKEN RECEIVED'
self.transaction_ep = ep
self.transaction_addr = addr
self.handshake = pname
self.transaction_state = 'IDLE'
- self.transaction_es = es
+ self.es_transaction = es
self.handle_transfer()
+ elif pname == 'PRE':
+ return
+
else:
self.putr(ss, es, [4, ['ERR: received unhandled %s token in state %s' %
(pname, self.transaction_state)]])