import Queue
import math
+tT = time
class FordExperiments(GoodFETMCPCANCommunication):
- def init(self):
- super(FordExperimetns,self).__init__(self) #initialize chip
-
+ def __init__(self):
+ GoodFETMCPCANCommunication.__init__(self)
+ #super(FordExperiments,self).__init__(self) #initialize chip
+ self.freq = 500;
+
def mimic1056(self,packetData,runTime):
#setup chip
self.client.serInit()
- self.spitSetup()
+ self.spitSetup(self.freq)
#FIGURE out how to clear buffers
self.addFilter([1056, 1056, 1056, 1056,1056, 1056], verbose=False)
packet1 = self.client.rxpacket();
+ if(packet1 != None):
+ packetParsed = self.client.packet2parsed(packet1);
+ #keep sniffing till we read a packet
+ while( packet1 == None or packetParsed.get('sID') != 1056 ):
+ packet1 = self.client.rxpacket()
+ if(packet1 != None):
+ packetParsed = self.client.packet2parsed(packet1)
recieveTime = time.time()
packetParsed = self.client.packet2parsed(packet1)
if( packetParsed['sID'] != 1056):
print "Sniffed wrong packet"
return
- countInitial = ord(packetParsed['db3'].get()) #initial count value
+ countInitial = ord(packetParsed['db3']) #initial count value
packet = []
#set data packet to match what was sniffed or at least what was input
for i in range(0,8):
idx = "db%d"%i
if(packetData.get(idx) == None):
packet.append(ord(packetParsed.get(idx)))
+ else:
+ packet.append(packetData.get(idx))
+ print packet
#### split SID into different regs
SIDlow = (1056 & 0x07) << 5; # get SID bits 2:0, rotate them to bits 7:5
SIDhigh = (1056 >> 3) & 0xFF; # get SID bits 10:3, rotate them to bits 7:0
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]]
+ packetCount = 1;
self.client.txpacket(packet);
tpast = time.time()
while( (time.time()-recieveTime) < runTime):
if( dT/0.2 >= 1):
db3 = (countInitial + math.floor((time.time()-recieveTime)/0.2))%255
packet[8] = db3
+ self.client.txpacket(packet)
+ packetCount += 1
else:
- self.client.MCPrts(TXB0=True):
+ packetCount += 1
+ self.client.MCPrts(TXB0=True)
tpast = time.time() #update our transmit time on the one before
+ def cycledb1_1056(self,runTime):
+ #setup chip
+ self.client.serInit()
+ self.spitSetup(500)
+ #FIGURE out how to clear buffers
+ self.addFilter([1056, 1056, 1056, 1056,1056, 1056], verbose=False)
+ packet1 = self.client.rxpacket();
+ if(packet1 != None):
+ packetParsed = self.client.packet2parsed(packet1);
+ #keep sniffing till we read a packet
+ while( packet1 == None or packetParsed.get('sID') != 1056 ):
+ time.sleep(.1)
+ packet1 = self.client.rxpacket()
+ if(packet1 != None):
+ packetParsed = self.client.packet2parsed(packet1)
+ recieveTime = time.time()
+ packetParsed = self.client.packet2parsed(packet1)
+ if( packetParsed['sID'] != 1056):
+ print "Sniffed wrong packet"
+ return
+ packet = []
+ #set data packet to match what was sniffed or at least what was input
+ for i in range(0,8):
+ idx = "db%d"%i
+ packet.append(ord(packetParsed.get(idx)))
+ packetValue = 0
+ packet[1] = packetValue;
+
+ print packet
+ #### split SID into different regs
+ SIDlow = (1056 & 0x07) << 5; # get SID bits 2:0, rotate them to bits 7:5
+ SIDhigh = (1056 >> 3) & 0xFF; # get SID bits 10:3, rotate them to bits 7:0
+ 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
+ packet[0],packet[1],packet[2],packet[3],packet[4],packet[5],packet[6],packet[7]]
+ packetCount = 1;
+ self.client.txpacket(packet);
+ tpast = time.time()
+ while( (time.time()-recieveTime) < runTime):
+ #care about db3 or packet[8] that we want to count at the rate that it is
+ dT = time.time()-tpast
+ packetValue += 1
+ pV = packetValue%255
+ #temp = ((packetValue+1))%2
+ #if( temp == 1):
+ # pV = packetValue%255
+ #else:
+ # pV = 0
+ packet[6] = pV
+ #packet[6] = 1
+ print packet
+ self.client.txpacket(packet)
+ packetCount += 1
+ tpast = time.time() #update our transmit time on the one before
+ print packetCount;
+
+ def getBackground(self,sId):
+ packet1 = self.client.rxpacket();
+ if(packet1 != None):
+ packetParsed = self.client.packet2parsed(packet1);
+ #keep sniffing till we read a packet
+ while( packet1 == None or packetParsed.get('sID') != sId ):
+ packet1 = self.client.rxpacket()
+ if(packet1 != None):
+ packetParsed = self.client.packet2parsed(packet1)
+
+ #recieveTime = time.time()
+ return packetParsed
-
+ def cycle4packets1279(self):
+ self.client.serInit()
+ self.spitSetup(500)
+ # filter on 1279
+ self.addFilter([1279, 1279, 1279, 1279, 1279, 1279], verbose = False)
+ packetParsed = self.getBackground(1279)
+ packet = []
+ if (packetParsed[db0] == 16):
+ # if it's the first of the four packets, replace the value in db7 with 83
+ packetParsed[db7] = 83
+ # transmit new packet
+ self.client.txpacket(packetParsed)
+ else:
+ # otherwise, leave it alone
+ # transmit same pakcet we read in
+ self.client.txpacket(packetParsed)
+ # print the packet we are transmitting
+ print packetParsed
+
+
+ def oscillateTemperature(self,time):
+ #setup chip
+ self.client.serInit()
+ self.spitSetup(500)
+ #FIGURE out how to clear buffers
+ self.addFilter([1056, 1056, 1056, 1056,1056, 1056], verbose=False)
+ packetParsed = self.getBackground(1056)
+ packet = []
+ #set data packet to match what was sniffed or at least what was input
+ for i in range(0,8):
+ idx = "db%d"%i
+ packet.append(ord(packetParsed.get(idx)))
+ packetValue = 0
+ packet[1] = packetValue;
+
+ print packet
+ #### split SID into different regs
+ SIDlow = (1056 & 0x07) << 5; # get SID bits 2:0, rotate them to bits 7:5
+ SIDhigh = (1056 >> 3) & 0xFF; # get SID bits 10:3, rotate them to bits 7:0
+ 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
+ packet[0],packet[1],packet[2],packet[3],packet[4],packet[5],packet[6],packet[7]]
+ packetCount = 1;
+ self.client.txpacket(packet);
+ startTime = tT.time()
+ while( (tT.time()-startTime) < runTime):
+ dt = tT.time()-startTime
+ inputValue = ((2.0*math.pi)/20.0)*dt
+ value = 30*math.sin(inputValue)+130
+ print value
+ #packet[5] = int(value)
+ if( value > 130 ):
+ packet[5] = 160
+ else:
+ packet[5] = 100
+ #packet[6] = 1
+ print packet
+ self.client.txpacket(packet)
+ packetCount += 1
+ #tpast = time.time() #update our transmit time on the one before
+ print packetCount;
+
+
if __name__ == "__main__":
fe = FordExperiments();
packetData = {}
packetData['db4'] = 4;
- runTime = 10;
- fe.mimic1056(packetData, runTime)
+ runTime = 100;
+ #fe.mimic1056(packetData, runTime)
+ #fe.cycledb1_1056(runTime)
+ fe.oscillateTemperature(runTime)
projects / goodfet / blobdiff