class GoodFETMCPCANCommunication:
- def __init__(self):
- self.client=GoodFETMCPCAN();
+ def __init__(self, dataLocation):
+ self.client=GoodFETMCPCAN(); """ Communication with the bus"""
self.client.serInit()
self.client.MCPsetup();
- self.DATALOCATION = "../../contrib/ThayerData/"
+ #self.DATA_LOCATION = "../../contrib/ThayerData/"
+ self.DATA_LOCATION = dataLocation; """ Stores file data location. This is the root folder where basic sniffs will be stored"""
+ self.INJECT_DATA_LOCATION = self.DATA_LOCATION+"InjectedData/" """ stores the sub folder path where injected data will be stored"""
def printInfo(self):
-
+ """ This method will print information about the board to the termina. It is usefull for diagnostics"""
self.client.MCPreqstatConfiguration();
print "MCP2515 Info:\n\n";
print self.client.packet2str(foo);
def reset(self):
+ """
+ Reset the chip
+ """
self.client.MCPsetup();
##########################
def sniff(self,freq,duration,description, verbose=True, comment=None, filename=None, standardid=None, debug=False, faster=False, parsed=True, data = None,writeToFile=True):
+ """
+ """
#reset eveything on the chip
self.client.serInit()
self.reset()
#get folder information (based on today's date)
now = datetime.datetime.now()
datestr = now.strftime("%Y%m%d")
- path = self.DATALOCATION+datestr+".csv"
+ path = self.DATA_LOCATION+datestr+".csv"
filename = path
if( writeToFile == True):
print "Data: " + self.client.packet2str(data);
def test(self):
-
+ """ This will perform a test on the GOODTHOPTER10. Diagnostic messages will be printed
+ out to the terminal
+ """
comm.reset();
print "Just reset..."
print "EFLG register: %02x" % self.client.peek8(0x2d);
def addFilter(self,standardid, verbose= True):
- comment = None
+ """ This method will configure filters on the board. Filters are positive filters meaning that they will only
+ store messages that match the ids provided in the list of standardid. Since there are 2 buffers and due to the configuration
+ of how the filtering works (see MCP2515 documentation), at least 3 filters must be set to guarentee you do not get any
+ unwanted messages. However even with only 1 filter set you should get all messages from that ID but the other buffer will store
+ any additional messages.
+ @type standardid: list of integers
+ @param standardid: List of standard ids that need to be set. There can be at most 6 filters set.
+ @type verbose: Boolean
+ @param verbose: If true it will print out messages and diagnostics to terminal.
+
+ @rtype: None
+ @return: This method does not return anything
+ """
+
### ON-CHIP FILTERING
if(standardid != None):
self.client.MCPreqstatConfiguration();
self.client.MCPreqstatNormal();
+ def filterForPacket(self, standardid, DB0, DB1, verbose= True):
+ """ This method will configure filters on the board to listen for a specific packet originating from standardid with data bytes 0 and 1. It will configure all six filters, so you will not recieve any other packets.
+ @type standardid: integer
+ @param standardid: standardID to listen for
+ @type DB0: integer
+ @param standardid: DB0 contents to filter for
+ @type DB1: integer
+ @param standardid: DB1 contents to filter for
+ @type verbose: Boolean
+ @param verbose: If true it will print out messages and diagnostics to terminal.
+
+ @rtype: None
+ @return: This method does not return anything
+ """
+
+ ### ON-CHIP FILTERING
+
+ self.client.MCPreqstatConfiguration();
+
+ # SID filtering: set CTRL registers to only accept standard messages
+ self.client.poke8(0x60,0x26); # set RXB0 CTRL register to ONLY accept STANDARD messages with filter match (RXM1=0, RXM=1, BUKT=1)
+ self.client.poke8(0x70,0x20); # set RXB1 CTRL register to ONLY accept STANDARD messages with filter match (RXM1=0, RXM0=1)
+
+ # Mask buffer 0 to match SID, DB0, DB1
+ 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
+ self.client.poke8(0x22,0xFF); #set buffer 0 mask 3 (DB0) to FF
+ self.client.poke8(0x23,0xFF); #set buffer 0 mask 4 (DB0) to FF
+
+ # Mask buffer 1 to match SID, DB0, DB1
+ 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
+ self.client.poke8(0x26,0xFF); #set buffer 1 mask 3 (DB0) to FF
+ self.client.poke8(0x27,0xFF); #set buffer 1 mask 4 (DB1) to FF
+
+ # Split SID into high and low bytes
+ SIDlow = (standardid & 0x07) << 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
+
+
+ for filter in range(0,5):
+ if (filter==0):
+ RXFSIDH = 0x00;
+ RXFSIDL = 0x01;
+ RXFDB0 = 0x02;
+ RXFDB1 = 0x03;
+ elif (filter==1):
+ RXFSIDH = 0x04;
+ RXFSIDL = 0x05;
+ RXFDB0 = 0x06;
+ RXFDB1 = 0x07;
+ elif (filter==2):
+ RXFSIDH = 0x08;
+ RXFSIDL = 0x09;
+ RXFDB0 = 0x0A;
+ RXFDB1 = 0x0B;
+ elif (filter==3):
+ RXFSIDH = 0x10;
+ RXFSIDL = 0x11;
+ RXFDB0 = 0x12;
+ RXFDB1 = 0x13;
+ elif (filter==4):
+ RXFSIDH = 0x14;
+ RXFSIDL = 0x15;
+ RXFDB0 = 0x16;
+ RXFDB1 = 0x17;
+ else:
+ RXFSIDH = 0x18;
+ RXFSIDL = 0x19;
+ RXFDB0 = 0x1A;
+ RXFDB1 = 0x1B;
+
+
+ self.client.poke8(RXFSIDH, SIDhigh);
+ self.client.poke8(RXFSIDL, SIDlow);
+ self.client.poke8(RXFDB0, DB0);
+ self.client.poke8(RXFDB1, DB1);
+
+ if (verbose == True):
+ print "Filtering for SID %d DB0 0x%02xh DB1 0x%02xh with filter #%d"%(ID, DB0, DB1, filter);
+
+ self.client.MCPreqstatNormal();
+
def spitSetup(self,freq):
+ """
+ This method sets up the chip for transmitting messages, but does not transmit anything itself.
+ """
self.reset();
self.client.MCPsetrate(freq);
self.client.MCPreqstatNormal();
- def spitSingle(self,freq, standardid, repeat, duration = None, debug = False, packet = None):
+ def spitSingle(self,freq, standardid, repeat,writes, period = None, debug = False, packet = None):
+ """
+ This method will spit a single message onto the bus. If there is no packet information provided then the
+ message will be sent as a remote transmission request (RTR). The packet length is assumed to be 8 bytes The message can be repeated a given number of times with
+ a gap of period (milliseconds) between each message. This will continue for the the number of times specified in the writes input.
+ This method will setup the bus and call the spit method, L{spit}. This method includes a bus reset and initialization.
+
+ @type freq: number
+ @param freq: The frequency of the bus
+
+ @type standardid: list of integer
+ @param standardid: This is a single length list with one integer elment that corresponds to the standard id you wish to write to
+
+ @type repeat: Boolean
+ @param repeat: If true the message will be repeatedly injected. if not the message will only be injected 1 time
+
+ @type writes: Integer
+ @param writes: Number of writes of the packet
+
+ @type period: Integer
+ @param period: Time delay between injections of the packet in Milliseconds
+
+ @type debug: Boolean
+ @param debug: When true debug status messages will be printed to the terminal
+
+ @type packet: List
+ @param packet: Contains the data bytes for the packet which is assumed to be of length 8. Each byte is stored as
+ an integer and can range from 0 to 255 (8 bits). If packet == None then an RTR will be sent on the given
+ standard id.
+
+ """
self.spitSetup(freq);
- spit(self,freq, standardid, repeat, duration = None, debug = False, packet = None)
+ spit(self,freq, standardid, repeat,writes, period, debug , packet)
def spit(self,freq, standardid, repeat,writes, period = None, debug = False, packet = None):
-
+ """
+ This method will spit a single message onto the bus. If there is no packet information provided then the
+ message will be sent as a remote transmission request (RTR). The packet length is assumed to be 8 bytes The message can be repeated a given number of times with
+ a gap of period (milliseconds) between each message. This will continue for the the number of times specified in the writes input.
+ This method does not include bus setup, it must be done before the method call.
+
+
+ @type freq: number
+ @param freq: The frequency of the bus
+
+ @type standardid: list of integer
+ @param standardid: This is a single length list with one integer elment that corresponds to the standard id you wish to write to
+
+ @type repeat: Boolean
+ @param repeat: If true the message will be repeatedly injected. if not the message will only be injected 1 time
+
+ @type writes: Integer
+ @param writes: Number of writes of the packet
+
+ @type period: Integer
+ @param period: Time delay between injections of the packet in Milliseconds
+
+ @type debug: Boolean
+ @param debug: When true debug status messages will be printed to the terminal
+
+ @type packet: List
+ @param packet: Contains the data bytes for the packet which is assumed to be of length 8. Each byte is stored as
+ an integer and can range from 0 to 255 (8 bits). If packet == None then an RTR will be sent on the given
+ standard id.
+
+ """
#### split SID into different regs
SIDlow = (standardid[0] & 0x07) << 5; # get SID bits 2:0, rotate them to bits 7:5
packet = [SIDhigh, SIDlow, 0x00,0x00,0x40]
- #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
- # 0x00,0x01,0x02,0x03,0x04,0x05,0x06,0xFF]
else:
# if we do have a packet, packet is SID + padding out EID registers + DLC of 8 + packet
#
+ """@todo: allow for variable-length packets"""
# TODO: allow for variable-length packets
#
packet = [SIDhigh, SIDlow, 0x00,0x00, # pad out EID regs
self.client.txpacket(packet);
if repeat:
+ """@todo: the repeat variable is no longer needed and can be removed """
print "\nNow looping on transmit. "
if period != None:
for i in range(0,writes):
def setRate(self,freq):
+ """
+ This method will reset the frequency that the MCP2515 expects the CAN bus to be on.
+
+ @type freq: Number
+ @param freq: Frequency of the CAN bus
+ """
self.client.MCPsetrate(freq);
SIDhigh = (sID >> 3) & 0xFF; # get SID bits 10:3, rotate them to bits 7:0
packet = [SIDhigh,SIDlow,0x00,0x00,0x08]
#dlc = row[2]
- for i in range(4,dlc+4):
+ dlc = 8
+ for i in range(3,dlc+3):
packet.append(row[i])
+ print packet
self.client.txpacket(packet)
projects / goodfet / blobdiff