This patch includes:
* Documentation update.
* Code simplification and correctness; the value overloads based on the
size of the hrm counter has been removed in favor of runtime check which
is more correct.
* The control point characteristic has been removed since HeartRate value
byte does not support the accumulated energy expanded.
If only buffer-full events and LF characters trigger the flush of
the send buffer then only line-based communication can be
implemented over the BLE UART Service. This patch extends the
service API by adding an explicit `flush` method to force sending
the buffer contents, thus enabling protocols with short (e.g.,
single character) messages.
In the process, the path has been shortened and the unecessary ble
directory between FEATURE_BLE and the actual implementation has been
removed.
commit id of ARMmbed : 17728a824c7273e16b6b74fae871e2997c88ecd1