# SNIFF
##########################
- def sniff(self,freq,duration,description, verbose=True, comment=None, filename=None, standardid=None, debug = False):
+ def sniff(self,freq,duration,description, verbose=True, comment=None, filename=None, standardid=None, debug=False, faster=False):
+ #reset eveything on the chip
+ self.client.serInit()
+ self.reset()
+
#### ON-CHIP FILTERING
if(standardid != None):
- comment = comment+"Filtering for SID ";
-
+ if( comment == None):
+ comment = ""
self.client.MCPreqstatConfiguration();
self.client.poke8(0x60,0x26); # set RXB0 CTRL register to ONLY accept STANDARD messages with filter match (RXM1=0, RMX0=1, BUKT=1)
self.client.poke8(0x20,0xFF); #set buffer 0 mask 1 (SID 10:3) to FF
self.client.poke8(RXFSIDL, SIDlow);
if (verbose == True):
- print "Filtering for SID %d (0x%02xh) with filter #%d"%(ID, ID, filter);
- comment = comment + ("%d " %(ID))
+ print "Filtering for SID %d (0x%02xh) with filter #%d"%(ID, ID, filter);
+ comment = comment + ("f%d" %(ID))
self.client.MCPsetrate(freq);
starttime = time.time();
while((time.time()-starttime < duration)):
- packet=self.client.rxpacket();
+
+ if(faster):
+ packet=self.client.fastrxpacket();
+ else:
+ packet=self.client.rxpacket();
if(debug == True):
#check packet status
row.append(0); #since we don't check for errors if we're not in debug mode...
row.append(comment)
+ #how long the sniff was for
+ row.append(duration)
+ #boolean that tells us if there was filtering. 0 == no filters, 1 == filters
+ if(standardid != None):
+ row.append(1)
+ else:
+ row.append(0)
#write packet to file
for byte in packet:
row.append("%02x"%ord(byte));
return packetcount
- def filterStdSweep(self, freq = freq, time = 5):
+ def filterStdSweep(self, freq, time = 5):
msgIDs = []
- niff(self,freq,duration,description, verbose=True, comment=None, filename=None, standardid=None, debug = False):
for i in range(0, 2047, 6):
print "sniffing id: %d, %d, %d, %d, %d, %d" % (i,i+1,i+2,i+3,i+4,i+5)
comment = "sweepFilter_%d_%d_%d_%d_%d_%d" % (i,i+1,i+2,i+3,i+4,i+5)
def spit(self,freq, standardid,debug):
+ comm.reset();
self.client.MCPsetrate(freq);
self.client.MCPreqstatNormal();
- if(debug==true):
+ if(debug==True):
+ print "\n\nATTEMPTING TRANSMISSION!!!"
print "Tx Errors: %3d" % self.client.peek8(0x1c);
print "Rx Errors: %3d" % self.client.peek8(0x1d);
print "Error Flags: %02x\n" % self.client.peek8(0x2d);
print "TXB0CTRL: %02x" %self.client.peek8(0x30);
- print "CANINTF: %02x" %self.client.peek8(0x2C);
+ print "CANINTF: %02x\n" %self.client.peek8(0x2C);
#### split SID into different regs
- SIDlow = (standardid & 0x03) << 5; # get SID bits 2:0, rotate them to bits 7:5
- SIDhigh = (standardid >> 3) & 0xFF; # get SID bits 10:3, rotate them to bits 7:0
+ SIDlow = (standardid[0] & 0x03) << 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
- packet = [SIDhigh, SIDlow,
+ packet = [SIDhigh, SIDlow, 0x00,0x00, # pad out EID regs
0x08, # bit 6 must be set to 0 for data frame (1 for RTR)
# lower nibble is DLC
0x01,0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0xFF]
self.client.txpacket(packet);
-
- if(self.client.peek8(0x2C)&0x80)==0x80:
- print "Error flag raised on transmission. Clearing this flag and proceeding.\n"
- print "INT Flags: %02x" % self.client.peek8(0x2c);
- self.client.MCPbitmodify(0x2C,0x80,0x00);
- print "INT Flags modified to: %02x\n" % self.client.peek8(0x2c);
- print "TXB0CTRL: %02x" %self.client.peek8(0x30);
- self.client.MCPbitmodify(0x30,0x08,0x00);
- print "TXB0CTRL modified to: %02x\n" %self.client.peek8(0x30);
- if (debug==true):
- print "message sending attempted.";
- print "Tx Errors: %02x" % self.client.peek8(0x1c);
- print "Rx Errors: %02x" % self.client.peek8(0x1d);
- print "Error Flags: %02x" % self.client.peek8(0x2d);
+ TXB0CTRL = self.client.peek8(0x30);
+ print "Tx Errors: %3d" % self.client.peek8(0x1c);
+ print "Rx Errors: %3d" % self.client.peek8(0x1d);
+ print "Error Flags: %02x\n" % self.client.peek8(0x2d);
+ print "TXB0CTRL: %02x" %self.client.peek8(0x30);
+ self.client.MCPbitmodify(0x30,0x08,0x00);
+ print "TXB0CTRL modified to: %02x\n" %self.client.peek8(0x30);
+
+ print "CANINTF: %02x" %self.client.peek8(0x2C);
+ self.client.MCPbitmodify(0x2C,0x80,0x00);
+ print "INT Flags modified to: %02x\n" % self.client.peek8(0x2c);
+
+
+
if __name__ == "__main__":
parser.add_argument('-c','--comment', help='Comment attached to ech packet uploaded',default=None);
parser.add_argument('-b', '--debug', action='store_true', help='-b will turn on debug mode, printing packet status', default=False);
parser.add_argument('-a', '--standardid', type=int, action='append', help='Standard ID to accept with filter 0 [1, 2, 3, 4, 5]', default=None);
+ parser.add_argument('-x', '--faster', action='store_true', help='-x will use "fast packet recieve," which may duplicate packets and/or cause other weird behavior', default=False);
args = parser.parse_args();
comments = args.comment
debug = args.debug
standardid = args.standardid
+ faster=args.faster
comm = GoodFETMCPCANCommunication();
#
if(args.verb=="sniff"):
- comm.sniff(freq=freq,duration=duration,description=description,verbose=verbose,comment=comments,filename=filename, standardid=standardid)
+ comm.sniff(freq=freq,duration=duration,description=description,verbose=verbose,comment=comments,filename=filename, standardid=standardid, debug=debug, faster=faster)
##########################
# SNIFF TEST
projects / goodfet / blobdiff