dspc6713数据采集

#include"dsk6713.h" #include"dsk6713_aic23.h" #define buffer_length 10000 #include"stdio.h" #pragma DATA_SECTION(buffer,".caijishuju") short buffer[buffer_length]; int buffer_pos = 0; /* input buffer position */ /* Codec configuration settings */ short buffer_data(short); /* function declarations */ DSK6713_AIC23_Config config = { 0x0017, // 0 DSK6713_AIC23_LEFTINVOL Left line input channel volume 0x0017, // 1 DSK6713_AIC23_RIGHTINVOL Right line input channel volume 0x00d8, // 2 DSK6713_AIC23_LEFTHPVOL Left channel headphone volume 0x00d8, // 3 DSK6713_AIC23_RIGHTHPVOL Right channel headphone volume 0x0011, // 4 DSK6713_AIC23_ANAPATH Analog audio path control 0x0000, // 5 DSK6713_AIC23_DIGPATH Digital audio path control 0x0000, // 6 DSK6713_AIC23_POWERDOWN Power down control 0x0043, // 7 DSK6713_AIC23_DIGIF Digital audio interface format 0x000d, // 8 DSK6713_AIC23_SAMPLERATE Sample rate control 0x0001 // 9 DSK6713_AIC23_DIGACT Digital interface activation }; void main() { Uint32 I_input; short sample_data; DSK6713_AIC23_CodecHandle hCodec; DSK6713_init(); /* Start the codec */ hCodec = DSK6713_AIC23_openCodec(0, &config); DSK6713_AIC23_setFreq(hCodec, 1); while(1) { while (!DSK6713_AIC23_read(hCodec, &I_input)); sample_data =I_input; /* input data */ sample_data = buffer_data(sample_data); /* buffer input */ } } /* store the input sample in a circular buffer */ short buffer_data(short sample) { buffer[buffer_pos] = sample;/* store sample */ buffer_pos++; /* increment buffer position */ if (buffer_pos > buffer_length) buffer_pos = 0; /* buffer wrap-around */ return sample; }