source/nRF5xn.cpp@562:613dbbdeed27, 2016-01-11 (annotated)

Committer:

vcoubard

Date:

Mon Jan 11 10:19:15 2016 +0000

Revision:

562:613dbbdeed27

Parent:

550:3f782c64d014

Child:

564:9c4b96f7be8d

Synchronized with git rev 7bf81e7e

Author: Andres Amaya Garcia

Improve shutdown to clear BLE API and not just SD



Improve the shutdown functionality, such that a call to ble.shutdown() from

the user application clears the API and nRF5x state and NOT only the

SoftDevice. To achieve this the following changes are introduced:



* Add a protected member cleanup() to nRF5xGap, nRF5xGattClient,

nRF5xGattServer, nRF5xSecurityManager and nRF5xServiceDiscovery.

* Modify the shutdown() implementation in nRF5xn such that it also calls the

static member shutdown() exposed by the BLE API in Gap.h, SecurityManager.h,

GattClient.h and GattServer.h.

* Modify nRF5xGattClient, nRF5xGattServer and nRF5xSecurityManager

classes so that they dynamically create their respective objects only if

needed. Previously the GattClient, GattServer and SecurityManager objects were

declared as static, which means that they were always present even though they

were not always needed. This increases memory consumption unnecessarily.

Furthermore, pointers to the object instances are stored in static members of

the classes as specified by the BLE API base classes. This ensures that

calls to shutdown do not require calls to getInstance() functions that would

otherwise result in undesired memory allocations.

* nRF5xGap object is always needed, so this remains allocated statically. But

the reference in Gap is pointed to this object.



The shutdown procedure is as follows:



1. The user calls ble.shutdown() which executes the code in nRF5xn::shutdown()

1. The SoftDevice is shutdown

1. The static members of Gap.h, SecurityManager.h, GattClient.h and

GattServer.h are called to clean up their own state.



If at any point an error occur during the last step, BLE_ERROR_INVALID_STATE is

returned.

Who changed what in which revision?