-
- # 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):
- self.spitSetup(freq)
- standardid = [i, i, i, i]
- #set filters
- self.addFilter(standardid, verbose = True)
- self.client.MCPreqstatNormal();
- #### 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
- packet1 = self.client.rxpacket();
- packet2 = self.client.rxpacket();
- 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
- elif( packet1 != None):
- print self.client.packet2parsedstr(packet1)
- elif( packet2 != None):
- print self.client.packet2parsedstr(packet2)
- 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
- elif( packet1 != None):
- print "just packet1"
- print self.client.packet2parsedstr(packet1)
- elif( packet2 != None):
- print "just packet2"
- print self.client.packet2parsedstr(packet2)
- trial += 1
- print "sweep complete"
+ def multiPacketTest(self):
+
+ self.reset();
+ self.client.MCPsetrate(500);
+ self.client.MCPreqstatNormal();
+
+ packet0 = [0x00, 0x00, 0x00,0x00, # pad out EID regs
+ 0x08, # bit 6 must be set to 0 for data frame (1 for RTR)
+ # lower nibble is DLC
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]
+
+ packet1 = [0x00, 0x20, 0x00,0x00, # pad out EID regs
+ 0x08, # bit 6 must be set to 0 for data frame (1 for RTR)
+ # lower nibble is DLC
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]
+ packet2 = [0x00, 0x40, 0x00,0x00, # pad out EID regs
+ 0x08, # bit 6 must be set to 0 for data frame (1 for RTR)
+ # lower nibble is DLC
+ 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]
+
+ comm.multiPacketSpit(packet0=packet0, packet1=packet1, packet2=packet2)
+
+ comm.multiPacketSpit(packet0rts=True, packet1rts=True, packet2rts=True)
+ comm.multiPacketSpit(packet2rts=True)
+ comm.multiPacketSpit(packet1rts=True)
+ comm.multiPacketSpit(packet0rts=True)
+
+
+
+ def multiPacketSpit(self, packet0 = None, packet1 = None, packet2 = None, packet0rts = False, packet1rts = False, packet2rts = False):
+ """
+ This method writes packets to the chip's TX buffers and/or sends the contents of the buffers onto the bus.
+
+ @type packet0: list of integer
+ @param packet0: A list of 13 integers of the format [SIDhigh SIDlow 0 0 DLC DB0-7] to be loaded into TXBF0
+
+ @type packet1: list of integer
+ @param packet1: A list of 13 integers of the format [SIDhigh SIDlow 0 0 DLC DB0-7] to be loaded into TXBF1
+
+ @type packet2: list of integer
+ @param packet2: A list of 13 integers of the format [SIDhigh SIDlow 0 0 DLC DB0-7] to be loaded into TXBF2
+
+ @type packet0rts: Boolean
+ @param packet0rts: If true the message in TX buffer 0 will be sent
+
+ @type packet2rts: Boolean
+ @param packet0rts: If true the message in TX buffer 1 will be sent
+
+ @type packet2rts: Boolean
+ @param packet0rts: If true the message in TX buffer 2 will be sent
+
+ """
+
+ if(packet0 != None):
+ self.client.writetxbuffer(packet0,0)
+ # print("trying to write TX buffer 0");
+ # for db in packet0:
+ # print" %d" %db
+ if (packet1 != None):
+ self.client.writetxbuffer(packet1,1)
+ # print("trying to write TX buffer 1");
+ # for db in packet0:
+ # print" %d" %db
+ if (packet2 != None):
+ self.client.writetxbuffer(packet2,2)
+ # print("trying to write TX buffer 2");
+ # for db in packet0:
+ # print" %d" %db
+
+ # if(packet0rts):
+ # print("trying to send TX buffer 0")
+ #if(packet1rts):
+ # print("trying to send TX buffer 1")
+ #if(packet2rts):
+ # print("trying to send TX buffer 2")
+
+ self.client.MCPrts(TXB0=packet0rts, TXB1=packet1rts, TXB2=packet2rts)
+