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panda
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Added setInterfaceAltSetting to python library to ensure correct interface setting. 

Renamed private member of panda library to reflect private status.
master
Jessy Diamond Exum 2017-06-20 17:40:24 -07:00
parent cdd1b18374
commit c4c4dbe32d
1 changed files with 25 additions and 23 deletions
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48
panda/__init__.py
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@ -82,25 +82,27 @@ class Panda(object):
def __init__(self, serial=None, claim=True):
if serial == "WIFI":
self.handle = WifiHandle()
self._handle = WifiHandle()
print("opening WIFI device")
else:
context = usb1.USBContext()
self.handle = None
self._handle = None
for device in context.getDeviceList(skip_on_error=True):
if device.getVendorID() == 0xbbaa and device.getProductID() == 0xddcc:
if serial is None or device.getSerialNumber() == serial:
print("opening device", device.getSerialNumber())
self.handle = device.open()
self._handle = device.open()
if claim:
self.handle.claimInterface(0)
self._handle.claimInterface(0)
# TODO: Do we need to cupport claim=False?
self._handle.setInterfaceAltSetting(0,0)
break
assert self.handle != None
assert self._handle != None
def close(self):
self.handle.close()
self._handle.close()
@staticmethod
def list():
@ -116,7 +118,7 @@ class Panda(object):
# ******************* health *******************
def health(self):
dat = self.handle.controlRead(Panda.REQUEST_TYPE, 0xd2, 0, 0, 13)
dat = self._handle.controlRead(Panda.REQUEST_TYPE, 0xd2, 0, 0, 13)
a = struct.unpack("IIBBBBB", dat)
return {"voltage": a[0], "current": a[1],
"started": a[2], "controls_allowed": a[3],
@ -128,38 +130,38 @@ class Panda(object):
def enter_bootloader(self):
try:
self.handle.controlWrite(Panda.REQUEST_TYPE, 0xd1, 0, 0, b'')
self._handle.controlWrite(Panda.REQUEST_TYPE, 0xd1, 0, 0, b'')
except Exception as e:
print(e)
pass
def get_serial(self):
dat = self.handle.controlRead(Panda.REQUEST_TYPE, 0xd0, 0, 0, 0x20)
dat = self._handle.controlRead(Panda.REQUEST_TYPE, 0xd0, 0, 0, 0x20)
hashsig, calc_hash = dat[0x1c:], hashlib.sha1(dat[0:0x1c]).digest()[0:4]
if hashsig != calc_hash:
raise PandaHashMismatchException(calc_hash, hashsig)
return [dat[0:0x10], dat[0x10:0x10+10]]
def get_secret(self):
return self.handle.controlRead(Panda.REQUEST_TYPE, 0xd0, 1, 0, 0x10)
return self._handle.controlRead(Panda.REQUEST_TYPE, 0xd0, 1, 0, 0x10)
# ******************* configuration *******************
def set_controls_allowed(self, on):
self.handle.controlWrite(Panda.REQUEST_TYPE, 0xdc, (0x1337 if on else 0), 0, b'')
self._handle.controlWrite(Panda.REQUEST_TYPE, 0xdc, (0x1337 if on else 0), 0, b'')
def set_gmlan(self, on, bus=2):
self.handle.controlWrite(Panda.REQUEST_TYPE, 0xdb, 1, bus, b'')
self._handle.controlWrite(Panda.REQUEST_TYPE, 0xdb, 1, bus, b'')
def set_uart_baud(self, uart, rate):
self.handle.controlWrite(Panda.REQUEST_TYPE, 0xe1, uart, rate, b'')
self._handle.controlWrite(Panda.REQUEST_TYPE, 0xe1, uart, rate, b'')
def set_uart_parity(self, uart, parity):
# parity, 0=off, 1=even, 2=odd
self.handle.controlWrite(Panda.REQUEST_TYPE, 0xe2, uart, parity, b'')
self._handle.controlWrite(Panda.REQUEST_TYPE, 0xe2, uart, parity, b'')
def set_uart_callback(self, uart, install):
self.handle.controlWrite(Panda.REQUEST_TYPE, 0xe3, uart, int(install), b'')
self._handle.controlWrite(Panda.REQUEST_TYPE, 0xe3, uart, int(install), b'')
# ******************* can *******************
@ -179,7 +181,7 @@ class Panda(object):
while True:
try:
print("DAT: %s"%b''.join(snds).__repr__())
self.handle.bulkWrite(3, b''.join(snds))
self._handle.bulkWrite(3, b''.join(snds))
break
except (usb1.USBErrorIO, usb1.USBErrorOverflow):
print("CAN: BAD SEND MANY, RETRYING")
@ -191,7 +193,7 @@ class Panda(object):
dat = bytearray()
while True:
try:
dat = self.handle.bulkRead(1, 0x10*256)
dat = self._handle.bulkRead(1, 0x10*256)
break
except (usb1.USBErrorIO, usb1.USBErrorOverflow):
print("CAN: BAD RECV, RETRYING")
@ -200,22 +202,22 @@ class Panda(object):
# ******************* serial *******************
def serial_read(self, port_number):
return self.handle.controlRead(Panda.REQUEST_TYPE, 0xe0, port_number, 0, 0x40)
return self._handle.controlRead(Panda.REQUEST_TYPE, 0xe0, port_number, 0, 0x40)
def serial_write(self, port_number, ln):
return self.handle.bulkWrite(2, chr(port_number) + ln)
return self._handle.bulkWrite(2, chr(port_number) + ln)
# ******************* kline *******************
# pulse low for wakeup
def kline_wakeup(self):
self.handle.controlWrite(Panda.REQUEST_TYPE, 0xf0, 0, 0, b'')
self._handle.controlWrite(Panda.REQUEST_TYPE, 0xf0, 0, 0, b'')
def kline_drain(self, bus=2):
# drain buffer
bret = bytearray()
while True:
ret = self.handle.controlRead(Panda.REQUEST_TYPE, 0xe0, bus, 0, 0x40)
ret = self._handle.controlRead(Panda.REQUEST_TYPE, 0xe0, bus, 0, 0x40)
if len(ret) == 0:
break
bret += ret
@ -224,7 +226,7 @@ class Panda(object):
def kline_ll_recv(self, cnt, bus=2):
echo = bytearray()
while len(echo) != cnt:
echo += self.handle.controlRead(Panda.REQUEST_TYPE, 0xe0, bus, 0, cnt-len(echo))
echo += self._handle.controlRead(Panda.REQUEST_TYPE, 0xe0, bus, 0, cnt-len(echo))
return echo
def kline_send(self, x, bus=2, checksum=True):
@ -239,7 +241,7 @@ class Panda(object):
x += get_checksum(x)
for i in range(0, len(x), 0xf):
ts = x[i:i+0xf]
self.handle.bulkWrite(2, chr(bus)+ts)
self._handle.bulkWrite(2, chr(bus)+ts)
echo = self.kline_ll_recv(len(ts), bus=bus)
if echo != ts:
print("**** ECHO ERROR %d ****" % i)