【正文】 software interruptssint17 .space 4*16sint18 .space 4*16sint19 .space 4*16sint20 .space 4*16sint21 .space 4*16sint22 .space 4*16sint23 .space 4*16sint24 .space 4*16sint25 .space 4*16sint26 .space 4*16sint27 .space 4*16sint28 .space 4*16sint29 .space 4*16sint30 .space 4*16int0: RETE NOP NOP NOPint1: RETE NOP NOP NOPint2: RETE NOP NOP NOPtint: RETE NOP NOP NOP rint0: B rxData NOP NOPxint0: RETE NOP NOP NOP rint2: RETE NOP NOP xint2: RETE NOP NOPint3: RETE NOP NOP NOPhint: RETE NOP NOP NOP rint1: RETE NOP NOP NOP xint1: RETE NOP NOP NOP dmac4: RETE NOP NOP NOP dmac5: RETE NOP NOP NOP .endMEMORY{ PAGE 0: VECS : o=0x0080 , l=0x0080 PROG : o=0x0100 , l=0x1f00 PAGE 1: DATA : o=0x2000 , l=0x9000}SECTIONS{ .vectors:VECS PAGE 0 .text :PROG PAGE 0 .data :PROG PAGE 0 .bss :DATA PAGE 1 stack :DATA PAGE 1 buffer :DATA PAGE 1 IN :DATA PAGE 1 OUT :DATA PAGE 1}。 enable interrupts and return from one NOP NOP NOP 。 branch to C entry point NOP 。 must be aligned on page boundary .ref start .ref rxData RESET: B start 。BC LTTT,AGT 。STLM A,DXR20 LD 1,A ADD *AR4,A STL A,*AR4 CMPM *AR4,2000h。放在這里居然沒問題，放在后邊就不行了！ STLM A,DXR20 STL A,*AR6 。 STM temp2,AR5 LD *AR5,A STLM A,DXR10 。A放了數(shù)組地址 STLM A,AR5 。將地址放在AR52 LDM AR5,A STM temp+3,AR5 STL A,*AR5 STLM A,AR6 STM temp,AR1 LD *AR1,A STL A,*AR6 STM temp1,AR4 。存進DATAIN的數(shù)組里，這樣好分析數(shù)據(jù) LD 2000H,A ADD *AR4,A 。把FIR后的數(shù)據(jù)放在temp2 LD *AR2,A STL A,*AR5 NOP RSBX FRCT NOP B L1 NOFIR: STM temp,AR1 LD *AR1,A STLM A,DXR10 。24 MACD *AR2,COEF,A STH A,*AR2 。將最新樣本存入fx[1],fx[0]保留空間,存FIR后的輸出暫存 STM buffer+levelN,AR2 。 STM buffer+1,AR3 。是否FIR處理的分支 CMPM *AR4,1 BC FIR,TC B NOFIR FIR: sSBX FRCT STM temp,AR1 。temp+1存輸入右聲道樣本，這里沒用，作保留吧 LDM DRR10,A STL A,*AR1 。 STM temp,AR1 。ANDM 0fffeh,*(18h)。REA LDM 18h,A。PMST NOP PSHM 1bh 。ST1 NOP PSHM 1ah 。T PSHM 6h 。AR7 PSHM 19h 。AR6 PSHM 17h 。AR4 PSHM 15h 。AR2 PSHM 13h 。AR0 PSHM 11h 。BH PSHM 0dh 。AG PSHM 0bh 。AL PSHM 9h 。******************************************** rxData: 。中斷初始化 ANDM 00ffh,PMST STM 030h,IMR STM 0ffh,IFR RSBX INTM STM temp,AR1 ST 0,*AR1 PORTW *AR1,8000h ST 8888H,*AR1 PORTW *AR1,8000h ST 0,*AR1 PORTW *AR1,8000h RPT 50 NOP。選擇FIR濾波輸出。調試ncount ST 0,*AR1 STM temp1,AR1。 STM 1800h,SPSD0 STM RCR1,SPSA0 STM 0a0h,SPSD0 STM RCR2,SPSA0 STM 0a0h,SPSD0 STM XCR1,SPSA0 STM 0a0h,SPSD0 STM XCR2,SPSA0 STM 0a0h,SPSD0 STM SRGR1,SPSA0 STM 01f00h,SPSD0 STM SRGR2,SPSA0 STM 03fh,SPSD0 STM PCR,SPSA0 STM 08fh,SPSD0 STM SPCR2,SPSA0 ORM 02c1h,SPSD0 RPT 100 NOP STM SPCR1,SPSA0 STM 02001h,SPSD0 RPT 100 NOP 。mcBSP0的初始化 STM 0,SPSD0 STM SPCR2,SPSA0 STM 0,SPSD0。MVDM,*AR1,DXR11。 ST AIC23_DIG_IF_ACTIVATE,*AR1 STM temp+1,AR2 ST DIGIFACT_ACT,*AR2 LD *AR1,9,A ADD *AR2,A STL A,*AR1 STM SPCR2,SPSA1Testma9: 。 STM temp,AR1 。MVDM,*AR1,DXR11。 ST AIC23_SAMPLE_RATE_CTL,*AR1 STM temp+1,AR2 ST SRC_SR_08,*AR2 LD *AR1,9,A ADD *AR2,A STL A,*AR1 STM SPCR2,SPSA1Testma8: 。 LD *AR1,A STLM A,DXR11。MVMD SPSD1,*AR2 LDM SPSD1,A STL A,*AR2 BITF *AR2,02h BC SendReady7,TC B Testma7SendReady7: 。 STM temp,AR1 。MVDM,*AR1,DXR11。 ST AIC23_RT_LINE_CTL,*AR1 STM temp+1,AR2 ST 017h,*AR2 LD *AR1,9,A ADD *AR2,A STL A,*AR1 STM SPCR2,SPSA1Testma6: 。 STM temp,AR1 。MVDM,*AR1,DXR11。 ST AIC23_LT_LINE_CTL,*AR1 STM temp+1,AR2 ST 017h,*AR2 LD *AR1,9,A ADD *AR2,A STL A,*AR1 STM SPCR2,SPSA1Testma5: 。 STM temp,AR1 。MVDM,*AR1,DXR11。 ST AIC23_DIGITAL_AUDIO_CTL,*AR1 STM temp+1,AR2 ST 0,*AR2 LD *AR1,9,A ADD *AR2,A STL