def cmd_01(dev):
import inspect
if 1:
return cmd_01r(dev)
buff = cmd_01r(dev, validate=False)
if 0:
where(2)
hexdump(buff, indent=' ')
else:
print 'cmd_01'
state = ord(buff[0x13])
print ' State: 0x%02X' % state
print ' 0x15: 0x%02X' % ord(buff[0x15])
print ' 0x16: 0x%02X' % ord(buff[0x16])
print ' 0x17: 0x%02X' % ord(buff[0x17])
return buff
def bulk86(dev, target=None, donef=None, prefix=None):
bulkRead, _bulkWrite, _controlRead, _controlWrite = usb_wraps(dev)
dbg = bulk86_dbg
if dbg:
print
print 'bulk86'
where(2)
try:
where(3)
except IndexError:
pass
# AFAIK certain packets have no way of knowing done
# other than knowing in advance how many bytes you should expect
# Strange since there are continue markers
if donef is None and target is not None:
def donef(buff):
return len(buff) == target
'''
Ex: need to read 4096 bytes
Max buffer packet size is 512 bytes
but for some reason only uses up to 256 bytes of real data
+ 3 framing bytes and 0 fills the rest to form 512 byte transfer
So to transfer the data
'''
def nxt_buff():
if dbg:
print ' nxt_buff: reading'
p = bulkRead(0x86, 0x0200)
if dbg:
hexdump(p, label=' nxt_buff', indent=' ')
#print str2hex(p)
prefix_this = ord(p[0])
size = (ord(p[-1]) << 8) | ord(p[-2])
'''
if size != len(p) - 3:
if truncate and size < len(p) - 3:
return prefix_this, p[1:1 + size], suffix_this
else:
print 'Truncate: %s' % truncate
print size, len(p) - 3, len(p)
hexdump(p)
raise Exception("Bad length (enable truncation?)")
return prefix_this, p[1:-2], suffix_this
'''
# No harm seen in always truncating
return prefix_this, p[1:1 + size]
buff = ''
while True:
if donef and donef(buff):
break
# Test on "packet 152/153" (0x64 byte response)
# gave 19/1010 splits => 1.9% of split
# Ran some torture tests looping on this to verify this logic is okay
if dbg and buff:
print ' NOTE: split packet. Have %d / %s bytes' % (len(buff), target)
hexdump(buff, indent=' ')
splits[0] += 1
try:
# Ignore suffix continue until we have a reason to care
if dbg:
tstart = time.time()
prefix_this, buff_this = nxt_buff()
if dbg:
tend = time.time()
print ' time: %0.3f' % (tend - tstart,)
buff += buff_this
if prefix is not None:
if prefix != prefix_this:
hexdump(buff_this)
raise BadPrefix('Wanted prefix 0x%02X, got 0x%02X' % (prefix, prefix_this))
elif prefix_this == 0x08:
pass
else:
raise BadPrefix('Unknown prefix 0x%02X' % prefix_this)
if donef and not donef(buff):
if dbg:
print ' continue: not done'
continue
if dbg:
print ' break: no special markers'
break
# FIXME: temp
except libusb1.USBError:
#if prefix is None:
# return buff
raise
#print 'Done w/ buff len %d' % len(buff)
if target is not None and len(buff) != target:
hexdump(buff, label='Wrong size', indent=' ')
prefix_this, buff_this = nxt_buff()
raise Exception('Target len: buff %d != target %d' % (len(buff), target))
if dbg:
hexdump(buff, label=' ret', indent=' ')
print
return buff
def atomic_probe(dev):
where(2)
cmd_01(dev)