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TMS320C5517: help for aer Library

Part Number: TMS320C5517
Other Parts Discussed in Thread: TLV320AIC3204

HI,​I have gotten a development board TS320C5517​ from your dealer in Shenzhen, China. I would like to control the howling of intercom with your AER library.
our connection:
microphone is connected to IN1_L and IN1_R of TLV320AIC3204 , speaker is connected to HP_L and HP_R .
the audio data is read by TS320C5517 through I2S interface, then we send it to AER, after the process of AER , audio data will be played on TLV320AIC3204.
but in practice the howling has not been controlled also the audio has been Jammed. I think that may be caused by the wrong use of AER library. So
would you please send us a sample for similar application

BR