DSP

DSP TMS320C5509A之ADC MAX121

2019-07-13 16:12发布

站内文章 / DSP
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MAX121 是一款具有DSP接口的14位串行ADC，最大采样速率308KBPS，驱动程序如下： #include #include MCBSP_Handle hADC; /* */ MCBSP_Config ADC_Mcbsp0 = { MCBSP_SPCR1_RMK( MCBSP_SPCR1_DLB_OFF, MCBSP_SPCR1_RJUST_RZF, MCBSP_SPCR1_CLKSTP_NODELAY, //CLKSTP = 10(no clock delay) MCBSP_SPCR1_DXENA_NA, MCBSP_SPCR1_ABIS_DISABLE, MCBSP_SPCR1_RINTM_RRDY, 0, MCBSP_SPCR1_RRST_DISABLE ), MCBSP_SPCR2_RMK( MCBSP_SPCR2_FREE_NO, MCBSP_SPCR2_SOFT_NO, MCBSP_SPCR2_FRST_RESET, MCBSP_SPCR2_GRST_RESET, MCBSP_SPCR2_XINTM_XRDY, 0, MCBSP_SPCR2_XRST_DISABLE ), MCBSP_RCR1_RMK( MCBSP_RCR1_RFRLEN1_OF(0), MCBSP_RCR1_RWDLEN1_16BIT ), MCBSP_RCR2_RMK( MCBSP_RCR2_RPHASE_SINGLE, MCBSP_RCR2_RFRLEN2_OF(0), MCBSP_RCR2_RWDLEN2_8BIT, MCBSP_RCR2_RCOMPAND_MSB, MCBSP_RCR2_RFIG_YES, MCBSP_RCR2_RDATDLY_0BIT //RDATDLY = 0 ), MCBSP_XCR1_RMK( MCBSP_XCR1_XFRLEN1_OF(0), MCBSP_XCR1_XWDLEN1_16BIT ), MCBSP_XCR2_RMK( MCBSP_XCR2_XPHASE_SINGLE, MCBSP_XCR2_XFRLEN2_OF(0), MCBSP_XCR2_XWDLEN2_8BIT, MCBSP_XCR2_XCOMPAND_MSB, MCBSP_XCR2_XFIG_YES, MCBSP_XCR2_XDATDLY_0BIT //XDATDLY = 0 ), MCBSP_SRGR1_RMK( MCBSP_SRGR1_FWID_OF(1), MCBSP_SRGR1_CLKGDV_OF(1) //CLKGDV = 1 ), MCBSP_SRGR2_RMK( MCBSP_SRGR2_GSYNC_FREE, MCBSP_SRGR2_CLKSP_RISING, MCBSP_SRGR2_CLKSM_INTERNAL, //CLKSM = 1 MCBSP_SRGR2_FSGM_DXR2XSR, MCBSP_SRGR2_FPER_OF(15) ), MCBSP_MCR1_DEFAULT, MCBSP_MCR2_DEFAULT, MCBSP_PCR_RMK( 0, //IDLEEN = 0 MCBSP_PCR_XIOEN_SP, MCBSP_PCR_RIOEN_SP, MCBSP_PCR_FSXM_EXTERNAL, //FSXM = 0; MCBSP_PCR_FSRM_EXTERNAL, MCBSP_PCR_CLKXM_INPUT, //CLKXM = 0 MCBSP_PCR_CLKRM_INPUT, MCBSP_PCR_SCLKME_NO, //SCLKME = 0 0, MCBSP_PCR_FSXP_ACTIVELOW, //FSXP = 0 The FSX pin is active low. MCBSP_PCR_FSRP_ACTIVEHIGH, MCBSP_PCR_CLKXP_RISING, //CLKXP = 0 MCBSP_PCR_CLKRP_FALLING //CLKRP = 0 ), MCBSP_RCERA_DEFAULT, MCBSP_RCERB_DEFAULT, MCBSP_RCERC_DEFAULT, MCBSP_RCERD_DEFAULT, MCBSP_RCERE_DEFAULT, MCBSP_RCERF_DEFAULT, MCBSP_RCERG_DEFAULT, MCBSP_RCERH_DEFAULT, MCBSP_XCERA_DEFAULT, MCBSP_XCERB_DEFAULT, MCBSP_XCERC_DEFAULT, MCBSP_XCERD_DEFAULT, MCBSP_XCERE_DEFAULT, MCBSP_XCERF_DEFAULT, MCBSP_XCERG_DEFAULT, MCBSP_XCERH_DEFAULT }; interrupt void ADC_DATA_INT(void); void IniADC(void) { // Uint16 eventId; // tmp_index = 0; // eventId = IRQ_EVT_RINT0; //eventId1 = IRQ_EVT_INT1; /* Clear any pending McBSP0 rec interrupts */ // IRQ_clear(eventId); //IRQ_clear(eventId1); /* Place interrupt service routine address at */ /* associated vector location */ // IRQ_plug(eventId,&ADC_DATA_INT); //IRQ_plug(eventId1,&ADC_FO_INT); //初始化DSP的相关寄存器 hADC=MCBSP_open(MCBSP_PORT0,MCBSP_OPEN_RESET); /*设置McBSP1*/ MCBSP_config(hADC,&ADC_Mcbsp0); /* Enable INT5 McBSP rec interrupt */ // IRQ_enable(eventId); MCBSP_start(hADC, MCBSP_SRGR_START | MCBSP_SRGR_FRAMESYNC, 0x300); MCBSP_start(hADC, MCBSP_RCV_START,//MCBSP_XMIT_START| 0); } /* interrupt void ADC_DATA_INT(void) { if(MCBSP_rrdy(hADC)) { tmpadc[tmp_index++] = MCBSP_read16(hADC); } if(tmp_index>=1024) { tmp_index = 0; } } */ 头文件如下： #include #include #ifndef __DAC_H__ #define __DAC_H__ #define DAC_PORTA 0x00 #define DAC_PORTB 0x01 #define DAC_PORTC 0x02 #define DAC_PORTD 0x03 #define DAC_MAX_OUT 8200 extern void IniADC(void); extern void IniDAC8164D(void); /* TMS320VC5501/5502/5509/5510 DSP */ /* Multichannel Buffered Serial Port (McBSP) */ /* Reference Guide */ extern void IniAudioDAC(void); extern void SendToDAC8164(Uint16 DAC_PORTX,Uint16 Value); extern void SendToIF(Uint32 Value); /* * FUNCTION: SENDtoAUDIO_DAC * * PARAMETERS: Value:输出的电压值 Gain:输出的增益系数，Q7 * * DESCRIPTION:发送数据到DAC，最终发送的数据是 * * RETURNS: * */ extern void SENDtoAUDIO_DAC(Uint16 Value); #endif  

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