id = 'usb_request'
name = 'USB request'
longname = 'Universal Serial Bus (LS/FS) transaction/request'
- desc = 'USB (low-speed and full-speed) transaction/request protocol.'
+ desc = 'USB (low-speed/full-speed) transaction/request protocol.'
license = 'gplv2+'
inputs = ['usb_packet']
outputs = ['usb_request']
+ tags = ['PC']
annotations = (
('request-setup-read', 'Setup: Device-to-host'),
('request-setup-write', 'Setup: Host-to-device'),
def metadata(self, key, value):
if key == srd.SRD_CONF_SAMPLERATE:
self.samplerate = value
- self.secs_per_sample = float(1) / float(self.samplerate)
+ if self.samplerate:
+ self.secs_per_sample = float(1) / float(self.samplerate)
def start(self):
self.out_binary = self.register(srd.OUTPUT_BINARY)
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
+ if self.handshake == 'ACK':
+ request['data'] += self.transaction_data
self.handle_request(request_started, request_end)
# CONTROL, SETUP stage
request['data'] += self.transaction_data
elif request['type'] == 'SETUP OUT' and self.transaction_type == 'OUT':
- request['data'] += self.transaction_data
+ if self.handshake == 'ACK':
+ request['data'] += self.transaction_data
if request['wLength'] == len(request['data']):
self.handle_request(1, 0)
self.es_transaction = es
self.transaction_state = 'TOKEN RECEIVED'
self.transaction_ep = ep
+ if ep > 0 and pname == 'IN':
+ self.transaction_ep = ep + 0x80
self.transaction_addr = addr
self.transaction_type = pname # IN OUT SETUP