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Disconnect BLE before hard reset

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If BLE is connected when performing a hard reset, attempt to disconnect
first to allow the remote peer to handle the disconnect gracefully
without haing to wait for a supervision timeout.
This commit is contained in:
Robert May 2015-11-17 13:12:27 +00:00
parent 2532d2f0b5
commit 51ea69201e
1 changed files with 19 additions and 0 deletions
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19
source/MicroBit.cpp
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@ -18,12 +18,31 @@ void panic(int statusCode)
uBit.panic(statusCode);
}
/**
* Callback that does a hard reset when a BLE GAP disconnect occurs.
*/
void bleDisconnectionResetCallback(Gap::Handle_t, Gap::DisconnectionReason_t)
{
NVIC_SystemReset();
}
/**
* Perform a hard reset of the micro:bit.
* If BLE connected, then try to signal a disconnect first
*/
void
microbit_reset()
{
if(uBit.ble && uBit.ble->getGapState().connected) {
uBit.ble->onDisconnection(bleDisconnectionResetCallback);
uBit.ble->gap().disconnect(Gap::REMOTE_USER_TERMINATED_CONNECTION);
// We should be reset by the disconnection callback, so we wait to
// allow that to happen. If it doesn't happen, then we fall through to the
// hard rest here. (For example there is a race condition where
// the remote device disconnects between us testing the connection
// state and re-setting the disconnection callback).
uBit.sleep(1000);
}
NVIC_SystemReset();
}