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77 lines
2.0 KiB
77 lines
2.0 KiB
7 years ago
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#!/usr/bin/env python
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import sys
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import time
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import struct
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import argparse
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import signal
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from panda import Panda
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class CanHandle(object):
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def __init__(self, p):
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self.p = p
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def transact(self, dat):
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#print "W:",dat.encode("hex")
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self.p.isotp_send(1, dat, 0, recvaddr=2)
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def _handle_timeout(signum, frame):
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# will happen on reset
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raise Exception("timeout")
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signal.signal(signal.SIGALRM, _handle_timeout)
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signal.alarm(1)
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try:
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ret = self.p.isotp_recv(2, 0, sendaddr=1)
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finally:
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signal.alarm(0)
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#print "R:",ret.encode("hex")
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return ret
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def controlWrite(self, request_type, request, value, index, data, timeout=0):
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# ignore data in reply, panda doesn't use it
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return self.controlRead(request_type, request, value, index, 0, timeout)
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def controlRead(self, request_type, request, value, index, length, timeout=0):
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dat = struct.pack("HHBBHHH", 0, 0, request_type, request, value, index, length)
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return self.transact(dat)
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def bulkWrite(self, endpoint, data, timeout=0):
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if len(data) > 0x10:
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raise ValueError("Data must not be longer than 0x10")
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dat = struct.pack("HH", endpoint, len(data))+data
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return self.transact(dat)
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def bulkRead(self, endpoint, length, timeout=0):
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dat = struct.pack("HH", endpoint, 0)
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return self.transact(dat)
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if __name__ == "__main__":
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parser = argparse.ArgumentParser(description='Flash pedal over can')
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parser.add_argument('--recover', action='store_true')
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parser.add_argument("fn", type=str, nargs='?', help="flash file")
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args = parser.parse_args()
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p = Panda()
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p.set_safety_mode(0x1337)
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while 1:
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if len(p.can_recv()) == 0:
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break
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if args.recover:
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p.can_send(0x200, "\xce\xfa\xad\xde\x1e\x0b\xb0\x02", 0)
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exit(0)
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else:
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p.can_send(0x200, "\xce\xfa\xad\xde\x1e\x0b\xb0\x0a", 0)
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if args.fn:
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time.sleep(0.1)
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print "flashing", args.fn
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code = open(args.fn).read()
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Panda.flash_static(CanHandle(p), code)
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print "can flash done"
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