The AttData trait is modified so that the methods return Results. The trait is still implemented for infallible callbacks, so although this is a breaking change for anyone that explicitly uses AttData, most usages of the gatt! macro should not break.
This does change the behavior of zero-byte reads. I'm not sure if it was intentional, but previously if AttData::read returned zero bytes, we'd return a "not found" error. This PR changes the behavior to return success in this case.
The AttData trait is modified so that the methods return Results. The trait is still implemented for infallible callbacks, so although this is a breaking change for anyone that explicitly uses AttData, most usages of the gatt! macro should not break.
This does change the behavior of zero-byte reads. I'm not sure if it was intentional, but previously if
AttData::readreturned zero bytes, we'd return a "not found" error. This PR changes the behavior to return success in this case.