1、蓝牙芯片YC1021开发资料 2、MCU通过串口与YC1021通讯 3、蓝牙协议栈等都在YC1021端完成，所以主机只需要解析处理好与YC1021之间的通讯协议即可 4、建议用状态机来做 5、YC1021跟BM77通讯差不多，只要搞定一个，另外一款就很容易了

Yichip YC1021蓝牙芯片数据手册以及管脚定义，网上根本下载不到。General Descr iption The YC1021 is a very low power, high performance and highly integrated Bluetooth 4.2 BR/EDR + BLE + 2.4G Proprietary triple-mode solution, designed for operation over the 2400MHz to 2483.5Mhz