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CC2564蓝牙芯片是否支持全双工音频流?

Other Parts Discussed in Thread: CC2564MODNEM, CC2564

采用CC2564MODNEM Board蓝牙芯片,STM32F407处理器,CC256XEM-STADAPT board,Bluetopia 蓝牙协议栈。采用HSP/HFP协议,期望实现蓝牙间全双工的音频流传输(输入和输出),采用完全相同的CC2564+STM32F4分别作为Master设备(Audiogateway)和Slave设备(headset)。实际现象是Master设备到Slave设备的音频流传输正常(能听到正常声音),Slave设备到Master设备的音频流未正常传输(未听到声音,通过示波器已确认:Slave设备的MCU已经将麦克风采集的音频数据发给了CC2564(PCM_DIN有音频数据),Master设备的CC2564的PCM_DOUT无音频数据)。请问CC2564蓝牙芯片在硬件上是否支持全双工的音频流,或者需要额外做一些配置?这个问题困扰了很久,希望能够解答,多谢!