letter=ord('\'');
elif ct[9]==0x36:
letter=ord(',');
+ elif ct[9]==0x37:
+ letter=ord('.');
else:
print "Unknown character 0x%02x." % ct[9];
letter=ord('?');
2*10**6]:
client.RF_setrate(foo);
if(client.RF_getrate()!=foo):
- print "ERROR Rate %i not supported. Got %i instead." % (foo,
- client.RF_getrate());
+ print "ERROR Rate %i not supported. Got %i instead." % (
+ foo,
+ client.RF_getrate());
print "\n\n";
client.poke(0x0A,0xDEADBEEF,5);
rate=False;
chan=False;
sync=False;
+ macreject=False;
+ printing=False;
startch=0; #Useful for forcing an early match.
+ maclen=5; #Some are shorter.
def init(self,goodfet,
- rate=True,chan=True,sync=True):
+ rate=True,chan=True,sync=True,
+ macreject=True, printing=False,
+ maclen=5):
"""Initializes a link to the GoodFET for autotuning."""
self.client=goodfet;
self.rate=rate;
self.chan=chan;
self.sync=sync;
+ self.macreject=macreject;
+ self.printing=printing;
+ self.maclen=maclen;
client.poke(0x00,0x00); #Stop nRF
client.poke(0x01,0x00); #Disable Shockburst
client.poke(0x00,0x70|0x03); #prime radio.
return;
+
def packetaddr(self,packet,justmac=False):
"""Returns a loaded packet address, including channel and rate."""
mac="";
#MAC,RF_CH,RATE
- for i in range(0,5):
+ for i in range(0,self.maclen):
mac="%s%02x" % (mac,ord(packet[i]));
if justmac:
return mac;
def validmac(self,packet):
sync=self.client.RF_getsmac()&0xFF;
mac=self.packetaddr(packet,justmac=True);
- if (ord(packet[0])&0x80)^(sync&0x80):
+
+ #BT preamble is A or 5.
+ #Fix this to work on the smallest bit, not the highest.
+ if ((ord(packet[0])&0x80)^(sync&0x80)) and self.macreject:
#print "%02x%02x invalid entry." % (sync,ord(packet[0]));
#This is a special kind of failure. Freq is probably right, but MAC is wrong.
return False;
- if mac=='5555555555' or mac=='aaaaaaaaaa' or mac=='0000000000':
- return False;
+ blacklist=['5555555555', 'aaaaaaaaaa',
+ '0000000000', 'ffffffffff',
+ '55555555', 'aaaaaaaa',
+ '00000000', 'ffffffff',
+ '555555', 'aaaaaa',
+ '000000', 'ffffff',
+ '7fffff', 'aaffff', 'aaaaff',
+ 'afffff', 'abffff', '5fffff'];
+ for foo in blacklist:
+ if mac==foo:
+ return False;
return True;
def handle(self,packet):
"""Handles a packet."""
- #printpacket(packet);
+ if self.printing:
+ printpacket(packet);
if not self.validmac(packet):
#print "Dropped packet from %s" % self.packetaddr(packet,justmac=True);
#TODO add support for 256kbps, if anyone uses it.
if count&1:
rate=rate|0x08;
- #print "Setting rate to 0x%02x" % rate;
+
if(rate==0x20):
rate=0x08;
+ print "Setting rate to 0x%02x" % rate;
self.client.poke(0x06,rate);
count=(count>>1);
#Power radio, prime for RX, no checksum
client.poke(0x00,0x70|0x03); #0x08 for checksum, 0x04 for two.
+ print "Autotuning on %i MHz" % (
+ client.RF_getfreq()/10**6);
+ print "sync,mac,r5,r6";
+ #Now we're ready to get packets.
+ guesser.startch=16;
+ guesser.selftune(threshold=2,
+ delay=10,
+ forever=True);
+
+if(sys.argv[1]=="autotunebt"):
+ #Reversal of transmitter code from nRF_CMD.c of OpenBeacon
+ #TODO remove all poke() calls.
+ guesser=AutoTuner();
+ guesser.init(client,rate=True,sync=False,chan=True,
+ macreject=False, printing=True);
+
+
+ #client.RF_setfreq(2481 * 10**6);
+ client.poke(0x06,0x00); #1MBps
+ client.poke(0x07,0x78); #Reset status register
+
+ #Bluetooth preamble is 0xA; BTLE is 0xAA.
+ client.RF_setsmac(0x000A);
+
+ #Longest length.
+ client.RF_setpacketlen(32);
+
+ #Power radio, prime for RX, no checksum
+ client.poke(0x00,0x70|0x03); #0x08 for checksum, 0x04 for two.
+
print "Autotuning on %i MHz" % (
client.RF_getfreq()/10**6);
print "sync,mac,r5,r6";
printpacket(packet);
sys.stdout.flush();
+if(sys.argv[1]=="sniffnike"):
+ #TODO remove all poke() calls.
+
+ client.poke(0x00,0x00); #Stop nRF
+ client.poke(0x01,0x00); #Disable Shockburst
+ client.poke(0x02,0x01); #Set RX Pipe 0
+
+ client.RF_setfreq(2425 * 10**6);
+ client.poke(0x06,0x20|0x06); #250 kbps
+ client.poke(0x07,0x78); #Reset status register
+
+ #Nike Settings
+ client.RF_setmaclen(2); # Illegal by datasheet, but it works!
+ client.RF_setsmac(0xc2bd);
+ client.RF_settmac(0xc2bd); #Should we forge data?
+
+ client.RF_setpacketlen(32); #No idea what the length is.
+
+ #Power radio, prime for RX, two-byte checksum.
+ client.poke(0x00,0x70|0x03); #0x08 for checksum, 0x04 for two bytes.
+
+ print "Listening as %010x on %i MHz" % (client.RF_getsmac(),
+ client.RF_getfreq()/10**6);
+ print "Expect some false-positives.";
+
+ #Now we're ready to get packets.
+ while 1:
+ packet=None;
+ while packet==None:
+ #time.sleep(0.1);
+ packet=client.RF_rxpacket();
+ printpacket(packet);
+ sys.stdout.flush();
+
if(sys.argv[1]=="snifftp"):
client.poke(0x00,0x00); #Stop nRF
client.poke(0x01,0x00); #Disable Shockburst
client.RF_setpacketlen(4);
#Power radio, prime for RX, two-byte checksum.
- client.poke(0x00,0x70|0x03|0x04|0x08);
+ #client.poke(0x00,0x70|0x03|0x04|0x08);
+
+ #Power radio, prime for RX, no checksum.
+ client.poke(0x00,0x70|0x03);
+
print "Listening as %010x on %i MHz" % (client.RF_getsmac(),
client.RF_getfreq()/10**6);
projects / goodfet / blobdiff