ble

btstack project

step - 1 Accomplish the HCI & LL for 4.2 version

step - 2 add LE privacy 1.2 featrure

step - 3 BQB

Log: --2016/11/23: 1.Makefile 添加配置蓝牙层模式; 2.Controller 模式下，既支持原有打印(TX-PA5/RX-PA6)，新增H4 Uart 接口(TX-PA10/RX-PA11);