Restrict runtime saves #1178
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Restrict runtime saves #1178
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the USB host port uses the flash, as does our config. both cores accessing the flash at the same time is no good and will crash the host port, so the host port core is locked when writing flash for saving the config, but this disables interrupts on the port and may interfere with auth, so this only saves at runtime when it is safe to (when USB host is disabled), with an optional flag to force saving the config, which should only be used in limited circumstances.
it doesn't use the USB host port for anything so this should always be fine
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Details in #1176, but saving to flash and host USB conflict, with the current code making the flash write safe but disabling interrupts on host USB's core for long enough to cause the connected dongle to disconnect. This makes most of the saves only occur if host USB is disabled (though they are still forced in the webconfig), and add a hotkey to force a save if you know what you're doing.
Resolves #1176