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feat: Detect Guru Meditation errors

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This commit is contained in:
radim.karnis
2022-10-03 15:43:00 +02:00
parent f4ed949557
commit 6fac2611d1
1 changed files with 38 additions and 2 deletions
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40
esptool/loader.py
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@@ -1428,6 +1428,38 @@ def slip_reader(port, trace_function):
Designed to avoid too many calls to serial.read(1), which can bog
down on slow systems.
"""
def detect_panic_handler(input):
"""
Checks the input bytes for panic handler messages.
Raises a FatalError if Guru Meditation or Fatal Exception is found, as both
of these are used between different ROM versions.
Tries to also parse the error cause (e.g. IllegalInstruction).
"""
guru_meditation = (
rb"G?uru Meditation Error: (?:Core \d panic'ed \(([a-zA-Z]*)\))?"
)
fatal_exception = rb"F?atal exception \(\d+\): (?:([a-zA-Z]*)?.*epc)?"
# Search either for Guru Meditation or Fatal Exception
data = re.search(
rb"".join([rb"(?:", guru_meditation, rb"|", fatal_exception, rb")"]),
input,
re.DOTALL,
)
if data is not None:
msg = "Guru Meditation Error detected {}".format(
" ".join(
[
"({})".format(i.decode("utf-8"))
for i in [data.group(1), data.group(2)]
if i is not None
]
)
)
raise FatalError(msg)
partial_packet = None
in_escape = False
successful_slip = False
@@ -1455,10 +1487,12 @@ def slip_reader(port, trace_function):
partial_packet = b""
else:
trace_function("Read invalid data: %s", HexFormatter(read_bytes))
remaining_data = port.read(port.inWaiting())
trace_function(
"Remaining data in serial buffer: %s",
HexFormatter(port.read(port.inWaiting())),
HexFormatter(remaining_data),
)
detect_panic_handler(read_bytes + remaining_data)
raise FatalError(
"Invalid head of packet (0x%s): "
"Possible serial noise or corruption." % hexify(b)
@@ -1471,10 +1505,12 @@ def slip_reader(port, trace_function):
partial_packet += b"\xdb"
else:
trace_function("Read invalid data: %s", HexFormatter(read_bytes))
remaining_data = port.read(port.inWaiting())
trace_function(
"Remaining data in serial buffer: %s",
HexFormatter(port.read(port.inWaiting())),
HexFormatter(remaining_data),
)
detect_panic_handler(read_bytes + remaining_data)
raise FatalError("Invalid SLIP escape (0xdb, 0x%s)" % (hexify(b)))
elif b == b"\xdb": # start of escape sequence
in_escape = True