import binascii;
import array;
import csv, time, argparse;
-import datetime
from GoodFETMCPCAN import GoodFETMCPCAN;
from intelhex import IntelHex;
self.client=GoodFETMCPCAN();
self.client.serInit()
self.client.MCPsetup();
+
- # create a filename with today's date
- now = datetime.datetime.now()
- self.filename = "../../contrib/ThayerData/"
- self.filename += now.strftime("%Y%m%d")
-
- ##########################
- # INFO
- ##########################
- #
- # Prints MCP state info
- #
def printInfo(self):
+
+ self.client.MCPreqstatConfiguration();
+
print "MCP2515 Info:\n\n";
print "Mode: %s" % self.client.MCPcanstatstr();
print "Read Status: %02x" % self.client.MCPreadstatus();
print "Rx Status: %02x" % self.client.MCPrxstatus();
+ print "Error Flags: %02x" % self.client.peek8(0x2D);
print "Tx Errors: %3d" % self.client.peek8(0x1c);
print "Rx Errors: %3d\n" % self.client.peek8(0x1d);
print "CNF3: %02x\n" %self.client.peek8(0x28);
print "RXB0 CTRL: %02x" %self.client.peek8(0x60);
print "RXB1 CTRL: %02x" %self.client.peek8(0x70);
+
+ print "RX Info:";
+ print "RXB0: %02x" %self.client.peek8(0x60);
+ print "RXB1: %02x" %self.client.peek8(0x70);
+ print "RXB0 masks: %02x, %02x, %02x, %02x" %(self.client.peek8(0x20), self.client.peek8(0x21), self.client.peek8(0x22), self.client.peek8(0x23));
+ print "RXB1 masks: %02x, %02x, %02x, %02x" %(self.client.peek8(0x24), self.client.peek8(0x25), self.client.peek8(0x26), self.client.peek8(0x27));
+
+
print "RX Buffers:"
packet0=self.client.readrxbuffer(0);
packet1=self.client.readrxbuffer(1);
def reset(self):
self.client.MCPsetup();
+
+ ##########################
+ # SNIFF
+ ##########################
- def sniff(self,freq,duration,description, verbose=True, comment=None, filename=None,):
- if(filename==None):
- filename=self.filename
+ def sniff(self,freq,duration,filename,description, verbose=True, comment=None, standardid=None):
+
+ #### ON-CHIP FILTERING
+ if(standardid != None):
+ 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(0x21,0xE0); #set buffer 0 mask 2 bits 7:5 (SID 2:0) to 1s
+ if(len(standardid)>2):
+ self.client.poke8(0x70,0x20); # set RXB1 CTRL register to ONLY accept STANDARD messages with filter match (RXM1=0, RMX0=1)
+ self.client.poke8(0x24,0xFF); #set buffer 1 mask 1 (SID 10:3) to FF
+ self.client.poke8(0x25,0xE0); #set buffer 1 mask 2 bits 7:5 (SID 2:0) to 1s
+
+ for filter,ID in enumerate(standardid):
+
+ if (filter==0):
+ RXFSIDH = 0x00;
+ RXFSIDL = 0x01;
+ elif (filter==1):
+ RXFSIDH = 0x04;
+ RXFSIDL = 0x05;
+ elif (filter==2):
+ RXFSIDH = 0x08;
+ RXFSIDL = 0x09;
+ elif (filter==3):
+ RXFSIDH = 0x10;
+ RXFSIDL = 0x11;
+ elif (filter==4):
+ RXFSIDH = 0x14;
+ RXFSIDL = 0x15;
+ else:
+ RXFSIDH = 0x18;
+ RXFSIDL = 0x19;
+
+ #### split SID into different regs
+ SIDlow = (ID & 0x03) << 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);
+
+
self.client.MCPsetrate(freq);
+
outfile = open(filename,'a');
dataWriter = csv.writer(outfile,delimiter=',');
dataWriter.writerow(['# Time Error Bytes 1-13']);
dataWriter.writerow(['#' + description])
-
- self.client.MCPreqstatListenOnly();
+
+ self.client.MCPreqstatNormal();
print "Listening...";
packetcount = 0;
starttime = time.time();
-
+
while((time.time()-starttime < duration)):
packet=self.client.rxpacket();
+
+ if(debug == True):
+ #check packet status
+ MCPstatusReg = self.client.MCPrxstatus();
+ messagestat=MCPstatusReg&0xC0;
+ messagetype=MCPstatusReg&0x18;
+ if(messagestat == 0xC0):
+ print "Message in both buffers; message type is %02x (0x00 is standard data, 0x08 is standard remote)." %messagetype
+ elif(messagestat == 0x80):
+ print "Message in RXB1; message type is %02x (0x00 is standard data, 0x08 is standard remote)." %messagetype
+ elif(messagestat == 0x40):
+ print "Message in RXB0; message type is %02x (0x00 is standard data, 0x08 is standard remote)." %messagetype
+ elif(messagestat == 0x00):
+ print "No messages in buffers."
+
if packet!=None:
- if( verbose==True):
- print self.client.packet2str(packet)
+
packetcount+=1;
row = [];
row.append("%f"%time.time());
- if (self.client.peek8(0x2C) & 0x80):
- self.client.MCPbitmodify(0x2C,0x80,0x00);
- print "ERROR: Malformed packet recieved: " + self.client.packet2str(packet);
- row.append(1);
+
+ if( verbose==True):
+ print self.client.packet2str(packet)
+
+ if(debug == True):
+
+ #check overflow
+ MCPeflgReg=self.client.peek8(0x2D);
+ print"EFLG register equals: %x" %MCPeflgReg;
+ if((MCPeflgReg & 0xC0)==0xC0):
+ print "WARNING: BOTH overflow flags set. Missed a packet. Clearing and proceeding."
+ elif(MCPeflgReg & 0x80):
+ print "WARNING: RXB1 overflow flag set. A packet has been missed. Clearing and proceeding."
+ elif(MCPeflgReg & 0x40):
+ print "WARNING: RXB0 overflow flag set. A packet has been missed. Clearing and proceeding."
+ self.client.MCPbitmodify(0x2D,0xC0,0x00);
+ print"EFLG register set to: %x" % self.client.peek(0x2D);
+
+ #check for errors
+ if (self.client.peek8(0x2C) & 0x80):
+ self.client.MCPbitmodify(0x2C,0x80,0x00);
+ print "ERROR: Malformed packet recieved: " + self.client.packet2str(packet);
+ row.append(1);
+ else:
+ row.append(0);
else:
- row.append(0);
-
- #write comment
+ row.append(0); #since we don't check for errors if we're not in debug mode...
+
row.append(comment)
for byte in packet:
row.append("%02x"%ord(byte));
dataWriter.writerow(row);
outfile.close()
- print "Listened for %x seconds, captured %x packets." %(duration,packetcount);
-
-
-
+ print "Listened for %d seconds, captured %d packets." %(duration,packetcount);
+
def sniffTest(self, freq):
- self.client.MCPsetup();
-
+
rate = freq;
print "Calling MCPsetrate for %i." %rate;
parser.add_argument('verb', choices=['info', 'test','peek', 'reset', 'sniff', 'freqtest','snifftest', 'spit']);
parser.add_argument('-f', '--freq', type=int, default=500, help='The desired frequency (kHz)', choices=[100, 125, 250, 500, 1000]);
parser.add_argument('-t','--time', type=int, default=15, help='The duration to run the command (s)');
- parser.add_argument('-o', '--output', default=None, elp='Output file');
+ parser.add_argument('-o', '--output', default="../../contrib/ted/sniff_out.csv",help='Output file');
parser.add_argument("-d", "--description", help='Description of experiment (included in the output file)', default="");
parser.add_argument('-v',"--verbose",action='store_false',help='-v will stop packet output to terminal', default=True);
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);
+
args = parser.parse_args();
freq = args.freq
description = args.description
verbose = args.verbose
comments = args.comment
+ debug = args.debug
+ standardid = args.standardid
comm = GoodFETMCPCANCommunication();
#
if(args.verb=="sniff"):
- comm.sniff(freq=freq,duration=duration,description=description,verbose=verbose,comment=comments,filename=filename)
-
-
+ comm.sniff(freq=freq,duration=duration,filename=filename,description=description,verbose=verbose,comment=comments, standardid=standardid)
##########################
# SNIFF TEST
if(args.verb=="test"):
comm.test()
-
if(args.verb=="peek"):
start=0x0000;
if(len(sys.argv)>2):
# and thus not generating an ack bit on the recieving board)
if(args.verb=="spit"):
comm.spit(freq=freq)
+
+
projects / goodfet / blobdiff