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docs/library/bluetooth.rst: Explain how to increase char buffer size.

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Jim Mussared 2019-10-15 10:10:41 +11:00 committed by Damien George
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@ -181,6 +181,13 @@ is generated during service registration. They can also be read from or written
to by a remote central device. Additionally, a peripheral can "notify" a
characteristic to a connected central via a connection handle.
Characteristics and descriptors have a default maximum size of 20 bytes.
Anything written to them by a central will be truncated to this length. However,
any local write will increase the maximum size, so if you want to allow larger
writes from a central to a given characteristic, use
:meth:`gatts_write<BLE.gatts_write>` after registration. e.g.
``gatts_write(char_handle, bytes(100))``.
.. method:: BLE.gatts_register_services(services_definition)
Configures the peripheral with the specified services, replacing any