def connect(self):
self.channel = self.config.get("KV_CHANNEL")
openFlags = canlib.canOPEN_ACCEPT_VIRTUAL if self.config.get(
"KV_ACCEPT_VIRTUAL") == True else None
bitrate = canlib.canBITRATE_500K
#bitrateFlags = canlib.canDRIVER_NORMAL
self.ch = canlib.openChannel(self.channel, openFlags)
self.parent.logger.debug("{} [CANLib version: {}]".format(
ChannelData(self.channel).device_name, canlib.dllversion()))
baudrate = int(self.parent.config.get("BAUDRATE"))
if self.config.get("KV_BAUDRATE_PRESET"):
if not baudrate in BAUDRATE_PRESETS:
raise ValueError(
"No preset for baudrate '{}'".format(baudrate))
self.ch.setBusParams(BAUDRATE_PRESETS[baudrate])
else:
samplePoint = self.config.get("SAMPLE_POINT")
sjw = self.config.get("SJW")
tseg1 = self.config.get("TSEG1")
tseg2 = self.config.get("TSEG2")
self.ch.setBusParams(baudrate, tseg1, tseg2, sjw)
self.ch.iocontrol.timer_scale = 10 # 10µS, fixed for now.
self.ch.busOn()
self.connected = True
def init(self, parent, master_id_with_ext: int, slave_id_with_ext: int,
receive_callback):
self.parent = parent
bitrate = canlib.canBITRATE_500K
#bitrateFlags = canlib.canDRIVER_NORMAL
self.ch = canlib.openChannel(self.channel, self.openFlags)
self.parent.logger.debug("{} [CANLib version: {}]".format(
ChannelData(self.channel).device_name, canlib.dllversion()))
self.ch.setBusParams(canlib.canBITRATE_250K)
#self.ch.setBusOutputControl(bitrateFlags)
self.ch.iocontrol.timer_scale = 10 # 10µS, fixed for now.
def __init__(self):
# Initialize existence of thread, declare canlib object, open a channel handle (0), set channel parameters
QtCore.QThread.__init__(self)
# Create canlib object
# Print out current canlib driver version to console
print("CANlib version: " + str(canlib.dllversion()))
# Open a channel that accepts connected physical CAN device, default to virtual channel if none found
self.handle1 = canlib.openChannel(0, canlib.canOPEN_ACCEPT_VIRTUAL)
self.h1data = canlib.ChannelData(0)
# Print out current channel name and data to console
print("Using channel: " + str(self.h1data.channel_name) + ", EAN: " +
str(self.h1data.card_upc_no))
# Set the can bus control to normal
self.handle1.setBusOutputControl(canlib.canDRIVER_NORMAL)
# Set CAN bit-rate to 125k (GCM default bit-rate)
self.handle1.setBusParams(canlib.canBITRATE_125K)
# Turn channel bus ON
self.handle1.busOn()
self.actively_dumping = True # Flag for 'self.run' method
ch = canlib.openChannel(channel, openFlags)
print("Using channel: %s, EAN: %s" % (
canlib.ChannelData(channel).channel_name,
canlib.ChannelData(channel).card_upc_no))
ch.setBusOutputControl(outputControl)
ch.setBusParams(bitrate)
ch.busOn()
return ch
def tearDownChannel(ch):
ch.busOff()
ch.close()
print("canlib dll version:", canlib.dllversion())
ch0 = setUpChannel(channel=0)
frame = Frame(id_=100, data=[1, 2, 3, 4], flags=canlib.MessageFlag.EXT)
while True:
try:
frame = ch0.read()
print(frame)
except (canlib.canNoMsg) as ex:
pass
except (canlib.canError) as ex:
print(ex)
tearDownChannel(ch0)