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test(core): send Cancel only on T1B1 #5567

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Merged
merged 1 commit into from
Aug 18, 2025
+9 −6
Merged

test(core): send Cancel only on T1B1 #5567

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15 changes: 9 additions & 6 deletions python/src/trezorlib/debuglink.py
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Original file line number Diff line number Diff line change
Expand Up @@ -1423,17 +1423,20 @@ def sync_responses(self) -> None:
"""
import secrets

# Start by canceling whatever is on screen. This will work to cancel T1 PIN
# prompt, which is in TINY mode and does not respond to `Ping`.
if self.protocol_version is ProtocolVersion.V1:
assert isinstance(self.protocol, ProtocolV1Channel)
self.protocol.write(messages.Cancel())
resp = self.protocol.read()
if self.model is models.T1B1:
# Start by canceling whatever is on screen. This will work to cancel T1 PIN
# prompt, which is in TINY mode and does not respond to `Ping`.
self.protocol.write(messages.Cancel())

message = "SYNC" + secrets.token_hex(8)
self.protocol.write(messages.Ping(message=message))
while resp != messages.Success(message=message):
success = messages.Success(message=message)
while True:
try:
resp = self.protocol.read()
if self.protocol.read() == success:
return
except Exception:
pass

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