+ #### split SID into different regs
+ SIDlow = (ID & 0x07) << 5; # get SID bits 2:0, rotate them to bits 7:5
+ SIDhigh = (ID >> 3) & 0xFF; # get SID bits 10:3, rotate them to bits 7:0
+
+ #write SID to regs
+ self.client.poke8(RXFSIDH,SIDhigh);
+ self.client.poke8(RXFSIDL, SIDlow);
+
+ if (verbose == True):
+ print "Filtering for SID %d (0x%02xh) with filter #%d"%(ID, ID, filter);
+
+
+
+
+ # 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 = 2,duration = 1, verbose = True):
+ print "started"
+ self.client.serInit()
+ self.spitSetup(freq)
+ for i in range(lowID,highID+1, 1):
+
+ standardid = [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]
+ 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
+ self.client.txpacket(packet)
+ ## listen for 2 packets. one should be the rtr we requested the other should be
+ ## a new packet response
+ 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
+ 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):
+ 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);
+ #break
+ trial += 1
+ print "sweep complete"
+
+ def spitSetup(self,freq):
+ self.reset();