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A failed BLE_GAP_EVENT_ENC_CHANGE only ended a numeric-comparison wait, so after a failed pair() the status stayed PAIR_WAITING. pair() then waited until Ctrl-C or a disconnect, and returned without raising. Store the NimBLE status from ENC_CHANGE and end the wait on failure. pair() now raises ConnectionError if the link dropped, and otherwise SecurityError with the same messages as nordic. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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Diagnosis and code by Claude, reviewed by @dhalbert.
Problem
pair()waited until Ctrl-C or a disconnect, and then returned without raising an exception.BLE_GAP_EVENT_ENC_CHANGEonly ended a numeric-comparison wait, so the status stayedPAIR_WAITING. The failure status was discarded.Fix
BLE_GAP_EVENT_ENC_CHANGEis now stored, and a failure ends the wait.pair()then raises:ConnectionError: Not connectedif the link dropped.SecurityErrorwith the same messages as nordic: "Unspecified issue. The pairing request on the other device may have been declined or ignored." for SM reason 0x08, otherwise "Unknown security error: 0x%04x" with the NimBLE status.Testing
Metro ESP32-S3 with this PR as central:
SecurityError: Unknown security error: 0x0505(peer: Pairing Not Supported)SecurityError: Unknown security error: 0x000d(SM timeout) after 30 sConnectionError: Not connectedReason 0x08 was not tested.