- # this will sweep through the given ids to request a packet and then sniff on that
- # id for a given amount duration. This will be repeated the number of attempts time
-
- #at the moment this is set to switch to the next id once a message is identified
- def rtrSweep(self,freq,lowID,highID, attempts = 1,duration = 1, verbose = True):
- #set up file
- now = datetime.datetime.now()
- datestr = now.strftime("%Y%m%d")
- path = self.DATALOCATION+datestr+"_rtr.csv"
- filename = path
- outfile = open(filename,'a');
- dataWriter = csv.writer(outfile,delimiter=',');
- dataWriter.writerow(['# Time Error Bytes 1-13']);
- dataWriter.writerow(['#' + "rtr sweep from %d to %d"%(lowID,highID)])
- print "started"
- #self.client.serInit()
- #self.spitSetup(freq)
- for i in range(lowID,highID+1, 1):
- self.client.serInit()
- self.spitSetup(freq)
- standardid = [i, i, i, i]
- #set filters
- self.addFilter(standardid, verbose = True)
-
- #### split SID into different areas
- SIDlow = (standardid[0] & 0x07) << 5; # get SID bits 2:0, rotate them to bits 7:5
- SIDhigh = (standardid[0] >> 3) & 0xFF; # get SID bits 10:3, rotate them to bits 7:0
- #create RTR packet
- packet = [SIDhigh, SIDlow, 0x00,0x00,0x40]
- dataWriter.writerow(["#requested id %d"%i])
- #self.client.poke8(0x2C,0x00); #clear the CANINTF register; we care about bits 0 and 1 (RXnIF flags) which indicate a message is being held
- #clear buffer
- packet1 = self.client.rxpacket();
- packet2 = self.client.rxpacket();
- #send in rtr request
- self.client.txpacket(packet)
- ## listen for 2 packets. one should be the rtr we requested the other should be
- ## a new packet response
- starttime = time.time()
- while ((time.time() - starttime) < duration):
- packet = self.client.rxpacket()
- if( packet == None):
- continue
- row = []
- row.append("%f"%time.time()) #timestamp
- row.append(0) #error flag (not checkign)
- row.append("rtrRequest_%d"%i) #comment
- row.append(duration) #sniff time
- row.append(1) # filtering boolean
- for byte in packet:
- row.append("%02x"%ord(byte));
- dataWriter.writerow(row)
- print self.client.packet2parsedstr(packet)
-# packet1=self.client.rxpacket();
-# packet2=self.client.rxpacket();
-# if( packet1 != None and packet2 != None):
-# print "packets recieved :\n "
-# print self.client.packet2parsedstr(packet1);
-# print self.client.packet2parsedstr(packet2);
-# continue
-# elif( packet1 != None):
-# print self.client.packet2parsedstr(packet1)
-# elif( packet2 != None):
-# print self.client.packet2parsedstr(packet2)
- trial= 2;
- # for each trial
- while( trial <= attempts):
- print "trial: ", trial
- self.client.MCPrts(TXB0=True);
- starttime = time.time()
- # this time we will sniff for the given amount of time to see if there is a
- # time till the packets come in
- while( (time.time()-starttime) < duration):
- packet=self.client.rxpacket();
- row = []
- row.append("%f"%time.time()) #timestamp
- row.append(0) #error flag (not checking)
- row.append("rtrRequest_%d"%i) #comment
- row.append(duration) #sniff time
- row.append(1) # filtering boolean
- for byte in packet:
- row.append("%02x"%ord(byte));
- dataWriter.writerow(row)
- print self.client.packet2parsedstr(packet)
-# packet2=self.client.rxpacket();
-#
-# if( packet1 != None and packet2 != None):
-# print "packets recieved :\n "
-# print self.client.packet2parsedstr(packet1);
-# print self.client.packet2parsedstr(packet2);
-# #break
-# elif( packet1 != None):
-# print "just packet1"
-# print self.client.packet2parsedstr(packet1)
-# elif( packet2 != None):
-# print "just packet2"
-# print self.client.packet2parsedstr(packet2)
- trial += 1
- print "sweep complete"
- outfile.close()