基于CSR官方sink例程修改增加SPP，亲测可用，但是CSR8670开发半开源的，所以烧录程时要配合Sink Configuration Tool和PSTool进行相应配置烧录才能实现SPP双向通讯。(The official CSR sink SPP based on routine modification increases, pro test is available, but the development of CSR8670 semi open source, so the bu