def _sendPeriodic(self, canId, canData, period):
print("Started Periodic Can Message - Every" + str(period) + "sec")
msg = can.Message(arbitration_id=canId, is_extended_id=False, data=canData)
try:
can.send_periodic(self.bus, msg, period)
except can.CanError:
print("Message NOT sent")
def send_message_periodic(self):
msg = can.Message(arbitration_id=0x222,
is_extended_id=False,
data=[0x11, 0x22, 0x33])
try:
can.send_periodic(self.bus, msg, 2)
return True
except can.CanError:
print("message not sent!")
return False
def _sendPeriodic(self, canId, canData, period):
# send message
#msg = can.Message(arbitration_id=0x123, is_extended_id=False,data=[0x11, 0x22, 0x33])
msg = can.Message(arbitration_id=canId,
is_extended_id=False,
data=canData)
try:
# Send Periodic Message
can.send_periodic(self.bus, msg, period)
print(msg)
except can.CanError:
print("Message NOT sent")
def main():
global device_id
global encoder_value_send_task
if len(sys.argv) != 2:
usage()
sys.exit(1)
device_id = int(sys.argv[1])
if device_id < 0 or device_id >= 63:
usage()
sys.exit(1)
can.rc['interface'] = 'socketcan_ctypes'
can.rc['channel'] = 'vcan0'
bus = Bus()
notifier = can.Notifier(bus, [Listener()])
status_3_msg = can.Message(arbitration_id=(talon_srx.STATUS_3 | device_id),
extended_id=True,
data=make_status_3_msg())
status_3_task = can.send_periodic(can.rc['channel'], status_3_msg, 0.1)
while True:
status_3_msg.data = make_status_3_msg()
status_3_task.modify_data(status_3_msg)
time.sleep(0.05)
notifier.stop()
def test_simple_periodic_send():
print("Starting to send a message every 200ms. Initial data is zeros")
msg = can.Message(arbitration_id=0x0cf02200, data=[0, 0, 0, 0, 0, 0])
task = can.send_periodic('vcan0', msg, 0.20)
time.sleep(2)
task.stop()
print("stopped cyclic send")
def send_periodic_msg(self, bus):
print("Starting to send a message every 200ms. Initial data is zeros")
# msg = can.Message(arbitration_id=0x0cf02200, data=[11, 22, 33, 44, 55, 66])
msg = can.Message(arbitration_id=0x1245, data=[11, 22, 33, 44, 55, 66])
self.task = can.send_periodic(bus, msg, 0.20)
time.sleep(2)
self.task.stop()
print("stopped cyclic send")
def AddPeriodicMessage(self, ibsid, contents, period):
# For socketcan_native, bit 32 (MSb) needs to be set for extended ID
# Is fixed in latest python-can though!
log.debug(
'Adding periodic message ID : 0x{mesgid:08X} period {T}'.format(
mesgid=ibsid.GetCANID(), T=period))
msg = can.Message(arbitration_id=(ibsid.GetCANID() | (1 << 31)),
data=contents,
extended_id=True)
self.periodic_tasks.append(
can.send_periodic(can.rc['channel'], msg, period))
def test_simple_periodic_send():
print("Trying to send a message...")
msg = Message(arbitration_id=0x0cf02200, data=[0, 1, 3, 1, 4, 1])
task = can.send_periodic('vcan0', msg, 0.020)
time.sleep(2)
print("Trying to change data")
msg.data[0] = 99
task.modify_data(msg)
time.sleep(2)
task.stop()
print("stopped cyclic send")
time.sleep(1)
task.start()
print("starting again")
time.sleep(1)
print("done")
def test_simple_periodic_send():
print("Trying to send a message...")
msg = Message(arbitration_id=0x0cf02200, data=[0, 1, 3, 1, 4, 1])
task = can.send_periodic('vcan0', msg, 0.020)
time.sleep(2)
print("Trying to change data")
msg.data[0] = 99
task.modify_data(msg)
time.sleep(2)
task.stop()
print("stopped cyclic send")
time.sleep(1)
task.start()
print("starting again")
time.sleep(1)
print("done")
def test_periodic_send_with_modifying_data():
print("Starting to send a message every 200ms. Initial data is ones")
msg = can.Message(arbitration_id=0x0cf02200, data=[1, 1, 1, 1])
task = can.send_periodic('vcan0', msg, 0.20)
time.sleep(2)
print("Changing data of running task to begin with 99")
msg.data[0] = 0x99
task.modify_data(msg)
time.sleep(2)
task.stop()
print("stopped cyclic send")
print("Changing data of stopped task to single ff byte")
msg.data = bytearray([0xff])
task.modify_data(msg)
time.sleep(1)
print("starting again")
task.start()
time.sleep(1)
task.stop()
print("done")
def send_periodic(self,
data,
arbitration_id,
extended_id,
period,
duration=None):
'''
:param float period:
Period in seconds between each message
:param float duration:
The duration to keep sending this message at given rate. If
no duration is provided, the task will continue indefinitely.
:return: A started task instance
:rtype: can.CyclicSendTaskABC
'''
message = can.Message(arbitration_id=arbitration_id,
data=data,
extended_id=extended_id)
task = can.send_periodic(message, period, duration)
assert isinstance(task, can.CyclicSendTaskABC)
return task
import can
import mppts
can_interface = 'slcan0'
bus = can.interface.Bus(can_interface, bustype='socketcan')
mppt_full = can.Message(arbitration_id=0x711,
data=[255, 255, 255, 255, 255, 255, 255, 255])
mppt_send = can.Message(arbitration_id=0x712)
can.send_periodic('slcan0', mppt_send, 0.10)
test = mppts.Drivetek(1810)
#while True:
# msg = bus.recv()
# test.parse_can_msg(msg.arbitration_id, msg.data)
# many other interfaces are supported as well (see below)
bus = can.Bus(interface='socketcan',
channel='vcan0',
receive_own_messages=True)
db = cantools.database.load_file('Sample.dbc')
example_message = db.get_message_by_name('ExampleMessage')
test_message = db.get_message_by_name('Message1')
data = example_message.encode({'Temperature': 250.1, 'AverageRadius': (3.2), 'Enable': 1})
msg = can.Message(arbitration_id=example_message.frame_id, data=data)
# send message
#msg = can.Message(arbitration_id=0x123, is_extended_id=False,data=[0x11, 0x22, 0x33])
try:
can.send_periodic(bus, msg, 1) # Send Periodic Message
#bus.send(msg) # Send Single Message
print(msg)
except can.CanError:
print("Message NOT sent")
# iterate over received messages
for msg in bus:
if(msg.arbitration_id == 0x444):
data = test_message.encode({'Signal1': 1})
rsp_msg = can.Message(arbitration_id=test_message.frame_id, data=data)
bus.send(rsp_msg)
#print(msg)
try:
print(db.decode_message(msg.arbitration_id, msg.data))
except:
