default settings GPIO PA4 PA6 PA3 PB5

hc

2024-02-19 890e1df1bec891d9203724541e81f8fbe5183388

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build 32bit 2mic 
./aimake/aimake.sh -t rk3308_32 MIC_TYPE=fespl clean all 
 
open "#LOCAL_CFLAGS += -DSAVE_AUDIO" in aimakefile download audio data 
/userdata/1.pcm input data 
/userdata/2.pcm output data