【正文】 STM 0,CLKMD 。初始化頻率 RPT 50 NOP STM CPU_SPEED_160M,CLKMD RPT 50 NOP 。********************************************************** STM SPCR1,SPSA1 。mcBSP1的初始化 STM 0,SPSD1 STM SPCR2,SPSA1 STM 0,SPSD1 STM SPCR1,SPSA1 STM 1800h,SPSD1 STM RCR1,SPSA1 STM 040h,SPSD1 STM XCR1,SPSA1 STM 040h,SPSD1 STM SRGR2,SPSA1 STM 2000h,SPSD1 STM SRGR1,SPSA1 STM 0FFh,SPSD1 STM XCR2,SPSA1 STM 0,SPSD1 STM RCR2,SPSA1 STM 0,SPSD1 STM PCR,SPSA1 STM 0A08h,SPSD1 STM SPCR2,SPSA1 ORM 40h,SPSD1 RPT 100 NOP STM SPCR1,SPSA1 ORM 01h,SPSD1 STM SPCR2,SPSA1 ORM 01h,SPSD1 RPT 100 NOP。******************************************************************* STM temp,AR1 。AIC23初始化AIC23_Write(AIC23_RESET_REG, 0)。 ST AIC23_RESET_REG,*AR1 STM temp+1,AR2 ST 0,*AR2 LD *AR1,9,A ADD *AR2,A STL A,*AR1 STM SPCR2,SPSA1Testma1: 。MVKD SPSD1,*AR2 LDM SPSD1,A STL A,*AR2 BITF *AR2,02h BC SendReady1,TC B Testma1SendReady1: 。MVKM,*AR1,DXR11。 LD *AR1,A STLM A,DXR11。 STM temp,AR1 。AIC23_Write(AIC23_POWER_DOWN_CTL, 0)。 ST AIC23_POWER_DOWN_CTL,*AR1 STM temp+1,AR2 ST 0,*AR2 LD *AR1,9,A ADD *AR2,A STL A,*AR1 STM SPCR2,SPSA1Testma2: 。MVMD SPSD1,*AR2 LDM SPSD1,A STL A,*AR2 BITF *AR2,02h BC SendReady2,TC B Testma2SendReady2: 。MVDM,*AR1,DXR11。 LD *AR1,A STLM A,DXR11。 STM temp,AR1 。 AIC23_Write(AIC23_ANALOG_AUDIO_CTL, ANAPCTL_DAC )。 ST AIC23_ANALOG_AUDIO_CTL,*AR1 STM temp+1,AR2 ST ANAPCTL_DAC,*AR2 LD *AR1,9,A ADD *AR2,A STL A,*AR1 STM SPCR2,SPSA1Testma3: 。MVMD SPSD1,*AR2 LDM SPSD1,A STL A,*AR2 BITF *AR2,02h BC SendReady3,TC B Testma3SendReady3: 。MVDM,*AR1,DXR11。 LD *AR1,A STLM A,DXR11。 STM temp,AR1 。 AIC23_Write(AIC23_DIGITAL_AUDIO_CTL, 0)。 ST AIC23_DIGITAL_AUDIO_CTL,*AR1 STM temp+1,AR2 ST 0,*AR2 LD *AR1,9,A ADD *AR2,A STL A,*AR1 STM SPCR2,SPSA1Testma4: 。MVMD SPSD1,*AR2 LDM SPSD1,A STL A,*AR2 BITF *AR2,02h BC SendReady4,TC B Testma4SendReady4: 。MVDM,*AR1,DXR11。 LD *AR1,A STLM A,DXR11。 STM temp,AR1 。AIC23_Write(AIC23_LT_LINE_CTL, 0x17)。 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: 。MVMD SPSD1,*AR2 LDM SPSD1,A STL A,*AR2 BITF *AR2,02h BC SendReady5,TC B Testma5SendReady5: 。MVDM,*AR1,DXR11。 LD *AR1,A STLM A,DXR11。 STM temp,AR1 。 AIC23_Write(AIC23_RT_LINE_CTL,0x17)。 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: 。MVMD SPSD1,*AR2 LDM SPSD1,A STL A,*AR2 BITF *AR2,02h BC SendReady6,TC B Testma6SendReady6: 。MVDM,*AR1,DXR11。 LD *AR1,A STLM A,DXR11。 STM temp,AR1 。 ST AIC23_DIGITAL_IF_FORMAT,*AR1 STM temp+1,AR2 ST HECHENGDIGIF,*AR2 LD *AR1,9,A ADD *AR2,A STL A,*AR1 STM SPCR2,SPSA1Testma7: 。MVMD SPSD1,*AR2 LDM SPSD1,A STL A,*AR2 BITF *AR2,02h BC SendReady7,TC B Testma7SendReady7: 。MVDM,*AR1,DXR11。 LD *AR1,A STLM A,DXR11。 STM temp,AR1 。 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: 。MVMD SPSD1,*AR2 LDM SPSD1,A STL A,*AR2 BITF *AR2,02h BC SendReady8,TC B Testma8SendReady8: 。MVDM,*AR1,DXR11。 LD *AR1,A STLM A,DXR11。 STM temp,AR1 。AIC23_Write(AIC23_DIG_IF_ACTIVATE, DIGIFACT_ACT)。 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: 。MVMD SPSD1,*AR2 LDM SPSD1,A STL A,*AR2 BITF *AR2,02h BC SendReady9,TC B Testma9SendReady9: 。MVDM,*AR1,DXR11。 LD *AR1,A STLM A,DXR11。**************************************************** STM SPCR1,SPSA0 。mcBSP0的初始化 STM 0,SPSD0 STM SPCR2,SPSA0 STM 0,SPSD0。 STM SPCR1,SPSA0。 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 。*********************************************** STM ncount,AR1 ST DELAYTIME,*AR1 STM IN,AR1 RPT DataBuffSize1 ST 0,*AR1+ STM OUT,AR1 RPT DataBuffSize1 ST 0,*AR1+ STM temp+3,AR1。調(diào)試ncount ST 0,*AR1 STM temp1,AR1。調(diào)試ncount ST 0,*AR1 STM Echo,AR1 ST 1,*AR1 。選擇FIR濾波輸出。************************************************