关于海思语音对讲

cv300开启语音对讲，在cat /dev/logmpp下有如下打印，[code] ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:608, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:609, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:610, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:611, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:612, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:613, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:614, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:615, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:616, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:617, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:618, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:619, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:620, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:621, chn=0
<4>[    ao] [Func]:AOPutDMAData [Line]:170 [Info]:<4>[    ao] AO buf empty, put last data, serial times:622, chn=0[/code]

意思是ao的Buf的缓冲区满了，: HI_MPI_ADEC_GetFrame(0, 0) failed 0xa018800e!错误码也是这个意思，现在不知道应该修改哪里，从哪里下手，各位有什么思路吗？