TLV320AIC31_test.rar_TLV320AIC31_TLV320AIC31_test_TLV320AIC31_te

/********************************************/ /* IIS.c : IIS module test sources .*/ /* Author : YZ */ /* Time : 2006-9-13 */ /********************************************/ #include "iis.h" #include <stdlib.h> #include <stdio.h> #include "common.h" #include "cfIdedma.h" #define nodma //#define open_file // A 48 point, 20 bit sine table const int sinewave[] = { 0x00000, 0x10B51, 0x2120F, 0x30FBB, 0x3FFFF, 0x4DEBD, 0x5A826, 0x658C8, 0x6ED9D, 0x7641A, 0x7BA36, 0x7EE79, 0x7FFFE, 0x7EE79, 0x7BA36, 0x7641A, 0x6ED9D, 0x658C8, 0x5A826, 0x4DEBD, 0x3FFFF, 0x30FBB, 0x2120F, 0x10B51, 0x00000, 0xEF4AF, 0xDEDF1, 0xCF045, 0xC0001, 0xB2143, 0xA57DA, 0x9A738, 0x91263, 0x89BE6, 0x845CA, 0x81187, 0x80002, 0x81187, 0x845CA, 0x89BE6, 0x91263, 0x9A738, 0xA57DA, 0xB2143, 0xC0001, 0xCF045, 0xDEDF1, 0xEF4AF }; //this function is used to delay several ms void apSleep(unsigned int msec) { unsigned int utimer, etimer, ttimer; utimer = 0; etimer = 0xFFFF - 1000; ttimer = SLEEP_TIMEOUT; *TIMER0_CTRL = 0x00; *TIMER0_LOAD = 0xFFFF; // Wait for timer to be loaded while((*TIMER0_LOAD != 0xFFFF) && ttimer) ttimer--; // Wait for timer to count down *TIMER0_CTRL = 0x80; do { if((*TIMER0_VALUE & 0xFFFF) < etimer) { *TIMER0_LOAD = 0xFFFF; utimer++; } }while(utimer<msec); } void playback() { unsigned short temp; int loop,i, time,t; FILE *fp; //static unsigned long play_buffer[90000]; unsigned short *play_buffer; *PIN = 0x80; *IIS_CR0=0x032f; *IIS_CR1=0x0002; *IIS_IMSC=0x000f; #ifndef nodma *IIS_DMACR=0x0003; #endif *IIS_CPSR=0x0004; #ifdef open_file if ((fp = fopen("C:\\play.pcm","rb"))==NULL) { printf("error for fopen play\n"); return; } play_buffer=(unsigned short *)malloc(0x200000*(sizeof(char))); if (play_buffer==NULL) { printf(" error for alloc play_buffer\n"); return ; } for (i=0;i<0x100000;i++) fread(&play_buffer[i],2,1,fp); fclose(fp); #else play_buffer=(unsigned short *)malloc(0x1000*(sizeof(char))); if (play_buffer==NULL) { printf(" error for alloc play_buffer\n"); return ; } for( i = 0; i<4096; i++) { if(t<48) { play_buffer[i] = sinewave[t]>>4; t++; } else { t=0; play_buffer[i] =sinewave[t]>>4; } } #endif printf("begin for play\n"); #ifdef nodma // Generate a 1kHz 1 second tone (sinewave) on each channel // Frequency is defined by CODEC (48kHz). // while(0){ for (time = 0; time < 8000; time++) { for (loop = 0; loop < 48; loop++) { // Wait for TX FIFO not to be full then write left and right channels temp = (sinewave[loop] >> 4); //apSleep(1); // while((!(*IIS_SSR & 0x0002)) && time < 4000); // *IIS_SDR = (time < 4000) ? 0 : 0; *IIS_SDR = 0; // apSleep(1); //while((!(*IIS_SSR & 0x0002)) && time < 4000); // *IIS_SDR = (time < 4000) ? temp : temp; *IIS_SDR = temp; } } // } for(temp=0;temp<1000;temp++) { for (i=0;i<0x100000;i++) { // while(!(*IIS_SSR & 0x1)); while(!(*IIS_MIS & 0x8)); *IIS_SDR = *(play_buffer+i); } } #else while(1) { SetDMA(0, (unsigned long)play_buffer, (unsigned long)IIS_SDR ,0x1000); WaitDMA(); *IIS_SDR = 0; } #endif } void record() { int loop; FILE *fp; FILE *fp2; static unsigned short data1[90000]; static unsigned short data2[90000]; unsigned short temp1; *PIN = 0x80; *IIS_CR0=0x011f; *IIS_CPSR=0x0008; *IIS_IMSC=0x0004; *IIS_CR1=0x0002; fp = fopen("C:\\recordl.pcm","wb"); fp2 = fopen("C:\\recordr.pcm","wb"); for (loop = 0; loop < 90000; loop++) { // Wait for TX FIFO not to be full then write left and right channels while(!(*IIS_MIS & 0x4)); data2[loop] = *IIS_SDR; data1[loop] = *IIS_SDR; } fwrite(data1, sizeof(short), 90000, fp); fwrite(data2, sizeof(short), 90000, fp2); fclose(fp); fclose(fp2); }