class UdsInterface(IsoTpProtocol):
def __init__(self, can_dev):
self.cq = CanQueue(can_dev)
self.cq.start()
def uds_request(self, ecu_id, service, payload, timeout=2):
msg = IsoTpMessage(ecu_id)
# first byte is service ID, rest of message is payload
msg.data = [service] + payload
# length is payload length plus 1 for service ID byte
msg.length = len(payload) + 1
# generate a request
request = self.generate_frames(msg)
# send the request
for f in request:
self.cq.send(f)
# get a response message with the request ID + 20
start_ts = time.time()
result = None
while result == None:
if time.time() - start_ts > timeout:
return None
response = self.cq.recv()
if response and response.id == ecu_id + 0x20:
result = self.parse_frame(response)
return result
class UdsInterface(IsoTpProtocol):
def __init__(self, can_dev):
self.cq = CanQueue(can_dev)
self.cq.start()
def uds_request(self, ecu_id, service, payload, timeout=2):
msg = IsoTpMessage(ecu_id)
# first byte is service ID, rest of message is payload
msg.data = [service] + payload
# length is payload length plus 1 for service ID byte
msg.length = len(payload) + 1
# generate a request
request = self.generate_frames(msg)
# send the request
for f in request:
self.cq.send(f)
# get a response message with the request ID + 20
start_ts = time.time()
result = None
while result == None:
if time.time() - start_ts > timeout:
return None
response = self.cq.recv()
if response and response.id == ecu_id + 0x20:
result = self.parse_frame(response)
return result
import time
import sys
dev = cantact.CantactDev(sys.argv[1])
dev.set_bitrate(125000)
cq = CanQueue(dev)
cq.start()
print cq.recv()
req = can.Frame(0x6A5)
req.dlc = 8
req.data = [0x10,0xFF, 0xFF]
cq.send(req)
print cq.recv(filter=0x625, timeout=10)
cq.stop()
#dev.stop()
#dev.ser.write('S0\r')
#dev.start()
#while True:
# frame = can.Frame(0x10)
# frame.dlc=3
# frame.data = [1,2,3]
# dev.send(frame)
# time.sleep(0.5)