McBSP.rar_5402 mcbsp_MCBSP_VC5402_vc5402 mcbsp

#include "cpu_reg.h" int ADbuf[500]; extern int DA_wptr,DA_rptr,y; extern int play_mode; void write_subreg0(unsigned int addr,unsigned int val); unsigned int read_subreg0(unsigned int addr); unsigned int read_subreg0(unsigned int addr) { *(SPSA0)=addr; return(*SPSD0); } void write_subreg0(unsigned int addr,unsigned int val) { *(SPSA0)=addr; *(SPSD0)=val; } void McBsp0_init() { write_subreg0(SPCR1,0); write_subreg0(SPCR2,0); write_subreg0(SPCR1,SPCR10_VAL); write_subreg0(SPCR2,SPCR20_VAL); write_subreg0(PCR,PCR0_VAL); write_subreg0(RCR1,RCR10_VAL); write_subreg0(RCR2,RCR20_VAL); write_subreg0(XCR1,XCR10_VAL); write_subreg0(XCR2,XCR20_VAL); delay(10); *(DXR10)=0; /*now enable McBSP transmit and receive*/ write_subreg0(SPCR1,SPCR10_VAL|1); write_subreg0(SPCR2,SPCR20_VAL|1); delay(10); *(IMR)|=0x0010; //开接收0中断 } void delay(int k) { while(k--); } interrupt void codec_ch0_in() //接收0中断 { int temp; temp=*DRR10; DA_rptr++; if(DA_rptr>=500) DA_rptr=0; ADbuf[DA_rptr]=temp; //保存录音数据 if(play_mode==0) *DXR10=y; //警报声的幅值 else *DXR10=temp; //放音 }