X-Git-Url: http://git.rot13.org/?p=goodfet;a=blobdiff_plain;f=client%2FGoodFETMCPCANCommunication.py;h=eb8ba45aa9d599142aa6ed32d3691923cd11f5de;hp=f555e475680fa6656286ea848f030127e941fa61;hb=f31dd7753fb0c29eb00b5c368ab395fca54ef557;hpb=b889bfabe5b0ed8d248ae1533c1a260d103ae1a0 diff --git a/client/GoodFETMCPCANCommunication.py b/client/GoodFETMCPCANCommunication.py index f555e47..eb8ba45 100644 --- a/client/GoodFETMCPCANCommunication.py +++ b/client/GoodFETMCPCANCommunication.py @@ -16,37 +16,31 @@ import binascii; import array; import csv, time, argparse; import datetime - +import os +from random import randrange from GoodFETMCPCAN import GoodFETMCPCAN; from intelhex import IntelHex; class GoodFETMCPCANCommunication: - def __init__(self, filename=None): + def __init__(self): self.client=GoodFETMCPCAN(); self.client.serInit() self.client.MCPsetup(); + self.DATALOCATION = "../../contrib/ThayerData/" - if( filname == None): - # create a filename with today's date - now = datetime.datetime.now() - self.filename = "../../contrib/ThayerData/" - self.filename += now.strftime("%Y%m%d") - else: - self.filename=filename + - ########################## - # 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); @@ -56,6 +50,14 @@ class GoodFETMCPCANCommunication: 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); @@ -64,48 +66,223 @@ class GoodFETMCPCANCommunication: def reset(self): self.client.MCPsetup(); + + + ########################## + # SNIFF + ########################## - def sniff(self,freq,duration,description, verbose=True, comment=None): + def sniff(self,freq,duration,description, verbose=True, comment=None, filename=None, standardid=None, debug=False, faster=False, parsed=True): + + #reset eveything on the chip + self.client.serInit() + self.reset() + + #### ON-CHIP FILTERING + if(standardid != None): + 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(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); + comment += ("f%d" %(ID)) + + self.client.MCPsetrate(freq); - outfile = open(self.filename,'a'); + + # This will handle the files so that we do not loose them. each day we will create a new csv file + if( filename==None): + #get folder information (based on today's date) + now = datetime.datetime.now() + datestr = now.strftime("%Y%m%d") + path = self.DATALOCATION+datestr+".csv" + filename = path + + + 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(faster): + packet=self.client.fastrxpacket(); + else: + 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): + #if we want to print a parsed message + if( parsed == True): + packetParsed = self.client.packet2parsed(packet) + sId = packetParsed.get('sID') + msg = "sID: %04d" %sId + if( packetParsed.get('eID')): + msg += " eID: %d" %packetParsed.get('eID') + msg += " rtr: %d"%packetParsed['rtr'] + length = packetParsed['length'] + msg += " length: %d"%length + msg += " data:" + for i in range(0,length): + dbidx = 'db%d'%i + msg +=" %03d"% ord(packetParsed[dbidx]) + print msg + # if we want to print just the message as it is read off the chip + else: + 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) + #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)); 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); + return packetcount - def sniffTest(self, freq): - self.client.MCPsetup(); + def filterStdSweep(self, freq, low, high, time = 5): + msgIDs = [] + self.client.serInit() + self.client.MCPsetup() + for i in range(low, high, 6): + print "sniffing id: %d, %d, %d, %d, %d, %d" % (i,i+1,i+2,i+3,i+4,i+5) + comment= "sweepFilter: " + #comment = "sweepFilter_%d_%d_%d_%d_%d_%d" % (i,i+1,i+2,i+3,i+4,i+5) + description = "Running a sweep filer for all the possible standard IDs. This run filters for: %d, %d, %d, %d, %d, %d" % (i,i+1,i+2,i+3,i+4,i+5) + count = self.sniff(freq=freq, duration = time, description = description,comment = comment, standardid = [i, i+1, i+2, i+3, i+4, i+5]) + if( count != 0): + for j in range(i,i+5): + comment = "sweepFilter: " + #comment = "sweepFilter: %d" % (j) + description = "Running a sweep filer for all the possible standard IDs. This run filters for: %d " % j + count = self.sniff(freq=freq, duration = time, description = description,comment = comment, standardid = [j, j, j, j]) + if( count != 0): + msgIDs.append(j) + return msgIDs + + def sweepRandom(self, freq, number = 5, time = 200): + msgIDs = [] + ids = [] + self.client.serInit() + self.client.MCPsetup() + for i in range(0,number,6): + idsTemp = [] + comment = "sweepFilter: " + for j in range(0,6,1): + id = randrange(2047) + #comment += "_%d" % id + idsTemp.append(id) + ids.append(id) + print comment + description = "Running a sweep filer for all the possible standard IDs. This runs the following : " + comment + count = self.sniff(freq=freq, duration=time, description=description, comment = comment, standardid = idsTemp) + if( count != 0): + for element in idsTemp: + #comment = "sweepFilter: %d" % (element) + comment="sweepFilter: " + description = "Running a sweep filer for all the possible standard IDs. This run filters for: %d " % element + count = self.sniff(freq=freq, duration = time, description = description,comment = comment, standardid = [element, element, element]) + if( count != 0): + msgIDs.append(j) + return msgIDs, ids + def sniffTest(self, freq): + rate = freq; print "Calling MCPsetrate for %i." %rate; @@ -129,6 +306,7 @@ class GoodFETMCPCANCommunication: def freqtest(self,freq): + self.client.MCPsetup(); self.client.MCPsetrate(freq); @@ -177,72 +355,101 @@ class GoodFETMCPCANCommunication: print "Data: " + self.client.packet2str(data); def test(self): - print "\nMCP2515 Self Test:"; - #Switch to config mode and try to rewrite TEC. + comm.reset(); + print "Just reset..." + print "EFLG register: %02x" % self.client.peek8(0x2d); + print "Tx Errors: %3d" % self.client.peek8(0x1c); + print "Rx Errors: %3d" % self.client.peek8(0x1d); + print "CANINTF: %02x" %self.client.peek8(0x2C); self.client.MCPreqstatConfiguration(); - self.client.poke8(0x00,0xde); - if self.client.peek8(0x00)!=0xde: - print "ERROR: Poke to TEC failed."; - else: - print "SUCCESS: Register read/write."; - - #Switch to Loopback mode and try to catch our own packet. - self.client.MCPreqstatLoopback(); - - packet1 = [0x00, - 0x08, # LOWER nibble must be 8 or greater to set EXTENDED ID - 0x00, 0x00, - 0x08, # UPPER nibble must be 0 to set RTR bit for DATA FRAME - # LOWER nibble is DLC - 0x01,0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0xFF] - self.client.txpacket(packet1); - self.client.txpacket(packet1); - print "Waiting on loopback packets."; + self.client.poke8(0x60,0x66); + self.client.MCPsetrate(500); + self.client.MCPreqstatNormal(); + print "In normal mode now" + print "EFLG register: %02x" % self.client.peek8(0x2d); + print "Tx Errors: %3d" % self.client.peek8(0x1c); + print "Rx Errors: %3d" % self.client.peek8(0x1d); + print "CANINTF: %02x" %self.client.peek8(0x2C); + print "Waiting on packets."; + checkcount = 0; packet=None; while(1): packet=self.client.rxpacket(); if packet!=None: print "Message recieved: %s" % self.client.packet2str(packet); - break; + else: + checkcount=checkcount+1; + if (checkcount%30==0): + print "EFLG register: %02x" % self.client.peek8(0x2d); + print "Tx Errors: %3d" % self.client.peek8(0x1c); + print "Rx Errors: %3d" % self.client.peek8(0x1d); + print "CANINTF: %02x" %self.client.peek8(0x2C); + - def spit(self,freq): + def spitSetup(self,freq): + comm.reset(); self.client.MCPsetrate(freq); self.client.MCPreqstatNormal(); + def spit(self,freq, standardid,debug, packet = None): + + #comm.reset(); + #self.client.MCPsetrate(freq); + #self.client.MCPreqstatNormal(); + + print "initial state:" 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); + print "\n\nATTEMPTING TRANSMISSION!!!" + + #### split SID into different regs + 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 = [0x00, - 0x08, # LOWER nibble must be 8 or greater to set EXTENDED ID - 0x00, 0x00, - 0x08, # UPPER nibble must be 0 to set RTR bit for DATA FRAME - # LOWER nibble is DLC - 0x01,0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0xFF] + #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); - - 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); + if(packet == None): + packetE = [SIDhigh, SIDlow | 0x80, 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] + else: + packetE = [SIDhigh, SIDlow | 0x80, 0x00,0x00, # pad out EID regs + 0x08, # bit 6 must be set to 0 for data frame (1 for RTR) + # lower nibble is DLC + packet[0],packet[1],packet[2],packet[3],packet[4],packet[5],packet[6],packet[7],packet[8]] + + self.client.txpacket(packetE); + + checkcount = 0; + TXB0CTRL = self.client.peek8(0x30); + + while(TXB0CTRL | 0x00 != 0x00): + checkcount+=1; + TXB0CTRL = self.client.peek8(0x30); + if (checkcount %30 ==0): + print "Tx Errors: %3d" % self.client.peek8(0x1c); + print "Rx Errors: %3d" % self.client.peek8(0x1d); + print "EFLG register: %02x" % self.client.peek8(0x2d); + print "TXB0CTRL: %02x" %TXB0CTRL; + print "CANINTF: %02x\n" %self.client.peek8(0x2C); + + + def setRate(self,freq): + self.client.MCPsetrate(freq); + if __name__ == "__main__": parser = argparse.ArgumentParser(formatter_class=argparse.RawDescriptionHelpFormatter,description='''\ @@ -264,10 +471,14 @@ if __name__ == "__main__": 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="../../contrib/ted/sniff_out.csv",help='Output file'); + parser.add_argument('-o', '--output', default=None,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); + 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(); freq = args.freq @@ -276,6 +487,9 @@ if __name__ == "__main__": description = args.description verbose = args.verbose comments = args.comment + debug = args.debug + standardid = args.standardid + faster=args.faster comm = GoodFETMCPCANCommunication(); @@ -307,9 +521,7 @@ if __name__ == "__main__": # if(args.verb=="sniff"): - comm.sniff(freq=freq,duration=duration,filename=filename,description=description,verbose=verbose,comment=comments) - - + comm.sniff(freq=freq,duration=duration,description=description,verbose=verbose,comment=comments,filename=filename, standardid=standardid, debug=debug, faster=faster) ########################## # SNIFF TEST @@ -322,6 +534,7 @@ if __name__ == "__main__": if(args.verb=="snifftest"): comm.sniffTest(freq=freq) + ########################## # FREQ TEST ########################## @@ -335,6 +548,8 @@ if __name__ == "__main__": if(args.verb=="freqtest"): comm.freqtest(freq=freq) + + ########################## # iSniff ########################## @@ -357,7 +572,6 @@ if __name__ == "__main__": if(args.verb=="test"): comm.test() - if(args.verb=="peek"): start=0x0000; if(len(sys.argv)>2): @@ -381,7 +595,9 @@ if __name__ == "__main__": # transmission (travis thinks this is because we're sniffing in listen-only # and thus not generating an ack bit on the recieving board) if(args.verb=="spit"): - comm.spit(freq=freq) + comm.spit(freq=freq, standardid=standardid, debug=debug) + +