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don't hang
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geohot committed Mar 10, 2018
1 parent bfa7d2e commit 3a6d7db
Showing 1 changed file with 18 additions and 4 deletions.
22 changes: 18 additions & 4 deletions tests/pedal/enter_canloader.py
Original file line number Diff line number Diff line change
@@ -1,19 +1,31 @@
#!/usr/bin/env python
import sys
import time
import struct
import argparse
import signal
from panda import Panda
import time

class CanHandle(object):
def __init__(self, p):
self.p = p

def transact(self, dat):
print "W:",dat.encode("hex")
#print "W:",dat.encode("hex")
self.p.isotp_send(1, dat, 0, recvaddr=2)
ret = self.p.isotp_recv(2, 0, sendaddr=1)
print "R:",ret.encode("hex")

def _handle_timeout(signum, frame):
# will happen on reset
raise Exception("timeout")

signal.signal(signal.SIGALRM, _handle_timeout)
signal.alarm(1)
try:
ret = self.p.isotp_recv(2, 0, sendaddr=1)
finally:
signal.alarm(0)

#print "R:",ret.encode("hex")
return ret

def controlWrite(self, request_type, request, value, index, data, timeout=0):
Expand Down Expand Up @@ -58,4 +70,6 @@ def bulkRead(self, endpoint, length, timeout=0):
code = open(args.fn).read()
Panda.flash_static(CanHandle(p), code)

print "can flash done"


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