TI中文支持网求助各位大侠：为什么我用dma的方式从mcbsp接收和发送数据，接收中断和发送中断只能进去2次，我用的是5509A，音频芯片是AIC23B。采用的是ping-pong缓存的方式。关键代码如下：
//———Global data definition———
/* Define transmit and receive buffers */
#pragma DATA_SECTION(xmt,"dmaMem")
Uint16 xmt[Num_sample];
#pragma DATA_SECTION(rcv,"dmaMem")
Uint16 rcv[Num_sample];
#pragma DATA_SECTION(pingrcv,"dmaMem")
Uint16 pingrcv[Num_sample];
#pragma DATA_SECTION(pongrcv,"dmaMem")
Uint16 pongrcv[Num_sample];
#pragma DATA_SECTION(pingxmt,"dmaMem")
Uint16 pingxmt[Num_sample];
#pragma DATA_SECTION(pongxmt,"dmaMem")
Uint16 pongxmt[Num_sample];
#pragma DATA_SECTION(Leftchannel_Buffer,"dmaMem")
Uint16 Leftchannel_Buffer[Num_sample];
#pragma DATA_SECTION(Rightchannel_Buffer,"dmaMem")
Uint16 Rightchannel_Buffer[Num_sample];
void Signal_process(void);
//———Function prototypes———
/* Reference start of interrupt vector table */
/* This symbol is defined in file, vectors.s55 */
extern void VECSTART(void);
/* Protoype for interrupt functions */
interrupt void dmaXmtIsr(void);
interrupt void dmaRcvIsr(void);
void taskFxn(void);
/*锁相环的设置*/
PLL_Config myConfig = {
0, //IAI: the PLL locks using the same process that was underway //before the idle mode was entered
1, //IOB: If the PLL indicates a break in the phase lock, //it switches to its bypass mode and restarts the PLL phase-locking //sequence
12, //PLL multiply value; multiply 24 times
1 //Divide by 2 PLL divide value; it can be either PLL divide value //(when PLL is enabled), or Bypass-mode divide value
//(PLL in bypass mode, if PLL multiply value is set to 1)
};
Uint16 i2c_status;
Uint16 aic23data2;
Uint16 k;
/*数字音频接口格式设置
AIC23为主模式，数据为DSP模式，数据长度16位*/Uint16 digital_audio_inteface_format[2]={0x0e,0x53};
//Uint16 digital_audio_inteface_format[2]={0x0e,0x43};
/*AIC23的波特率设置，采样率为44.1K*/
Uint16 sample_rate_control[2] = {0x10,0x23};
/*AIC23寄存器复位*/
Uint16 reset[2] ={0x1e,0x00};
/*AIC23节电方式设置，所有部分均所与工作状态*/
Uint16 power_down_control[2] ={0x0c,0x00};
/*AIC23模拟音频的控制
DAC使能，ADC输入选择为Line*/
Uint16 analog_aduio_path_control[2] ={0x08,0x10};//Line IN
//Uint16 analog_aduio_path_control[2] ={0x08,0x14};//MIC IN
/*AIC23数字音频通路的控制*/
Uint16 digital_audio_path_control[2] ={0x0a,0x05};
/*AIC23数字接口的使能*/
Uint16 digital_interface_activation[2] ={0x12,0x01};
/*AIC23左通路音频调节*/
Uint16 left_line_input_volume_control[2] ={0x00,0x17};
/*AIC23右通路音频调节*/
Uint16 right_line_input_volume_control[2] ={0x02,0x17};
/*AIC23耳机左通路音频调节*/
Uint16 left_headphone_volume_control[2] ={0x05,0xFF};
/*AIC23耳机右通路音频调节*/
Uint16 right_headphone_volume_control[2] = {0x07,0xFF};
MCBSP_Handle hMcbsp;
/* This next struct shows how to use the I2C API */
/* Create and initialize an I2C initialization structure */
I2C_Setup I2Cinit = {
0, /* 7 bit address mode */
0, /* own address – don't care if master */
84, /* clkout value (Mhz) */
50, /* a number between 10 and 400*/
0, /* number of bits/byte to be received or transmitted (8)*/
0, /* DLB mode on*/
1 /* FREE mode of operation on*/
};
I2C_Config testI2C;
MCBSP_Config Mcbsptest;
MCBSP_Handle hMcbsp;
void Init_Peripheral(void);
void Init_TLV320AIC23B(void);
MCBSP_Config Mcbsp1Config= {
MCBSP_SPCR1_RMK(
MCBSP_SPCR1_DLB_OFF, /* DLB = 0,禁止自闭环方式 */
MCBSP_SPCR1_RJUST_LZF, /* RJUST = 2 left justify the data andzero fill LSBS */
MCBSP_SPCR1_CLKSTP_DISABLE, /* CLKSTP = 0 Clock stop mode disable */
MCBSP_SPCR1_DXENA_ON, /* DXENA = 1 DX delay enabler on */
MCBSP_SPCR1_ABIS_DISABLE, /* ABIS = 0 reserved always write 0*/
MCBSP_SPCR1_RINTM_RRDY, /* RINTM = 0 sends a receive INT requestto CPU when the RRDY bit
change from 0 to 1, indicating that receivedata is ready to be read*/
0, /* RSYNCER = 0 receive frame-sync errorbit, no error*/
MCBSP_SPCR1_RRST_DISABLE /* RRST = 0 reset the receiver*/
),
MCBSP_SPCR2_RMK(
MCBSP_SPCR2_FREE_NO, /* FREE = 0 free run bit, The McBSPtransmit and receive clocks are affected as determined by the SOFT bit*/
MCBSP_SPCR2_SOFT_NO, /* SOFT = 0 Soft stop bit, Hard stop*/
MCBSP_SPCR2_FRST_FSG, /* FRST = 0 Frame-sync logic reset bit*/
MCBSP_SPCR2_GRST_CLKG, /* GRST = 0 Sample rate generator resetbit */
MCBSP_SPCR2_XINTM_XRDY, /* XINTM = 0 transmit interrupt mode bitsXRDY bit changes from 0 to1 */
0, /* XSYNCERR = N/A transmit frame-sync errorbit, no error*/ MCBSP_SPCR2_XRST_DISABLE /* XRST = 0 transmit ready bit, notready*/
//注意：开始一定要设置为disable，否则不能设置它的寄存器，全部为默认值，导致不能正常接收，
//在程序调用C库函数mcbspstart时会在设为1，McBSP便退出reset状态开始工作
),
/*单数据相，接受数据长度为16位,每相2个数据*/
MCBSP_RCR1_RMK(
MCBSP_RCR1_RFRLEN1_OF(1), /* RFRLEN1 = 1 Receive frame length 1 bits(1 to 128 words),Frame length=(RFRLEN1+1)words*/
MCBSP_RCR1_RWDLEN1_16BIT /* RWDLEN1 = 2 Receive word length 1bits, 16bit*/
),
MCBSP_RCR2_RMK( MCBSP_RCR2_RPHASE_SINGLE, /* RPHASE = 0 Receive phase number bit,single-phase frame*/
MCBSP_RCR2_RFRLEN2_OF(0), /* RFRLEN2 = 0 */
MCBSP_RCR2_RWDLEN2_8BIT, /* RWDLEN2 = 0 */
MCBSP_RCR2_RCOMPAND_MSB, /* RCOMPAND = 0 receive companding modebits, 0, no companding,MSB received first*/
MCBSP_RCR2_RFIG_YES, /* RFIG = 0 Receive frame-sync ignorebit, 1, frame-sync detect */
MCBSP_RCR2_RDATDLY_1BIT /* RDATDLY = 1 Receive data delay bits, 1-bit data delay*/
),
MCBSP_XCR1_RMK( MCBSP_XCR1_XFRLEN1_OF(1), /* XFRLEN1 = 1 Transmit frame length 1(1 to128 words),Frame length=(XFRLEN1+1)words */
MCBSP_XCR1_XWDLEN1_16BIT /* XWDLEN1 = 2 Transmit word length1.16bit*/
),
MCBSP_XCR2_RMK( MCBSP_XCR2_XPHASE_SINGLE, /* XPHASE = 0 Transmit phase number bit,single-phase frame*/
MCBSP_XCR2_XFRLEN2_OF(0), /* XFRLEN2 = 0 */
MCBSP_XCR2_XWDLEN2_8BIT, /* XWDLEN2 = 0 */
MCBSP_XCR2_XCOMPAND_MSB, /* XCOMPAND = 0 Transmit companding modebits, 0, no companding,MSB received first*/
MCBSP_XCR2_XFIG_YES, /* XFIG = 0 Transmit frame-sync ignorebit, 1, frame-sync detect */
MCBSP_XCR2_XDATDLY_1BIT /* XDATDLY = 1 Transmit data delay bits, 1-bit data delay*/
), MCBSP_SRGR1_DEFAULT, /*(0x0001u)FWID=0,CLKGDV=1 */
MCBSP_SRGR2_DEFAULT, /*(0x2000u)CLKSM=1，Sample rate generatorinput clock mode bit */
MCBSP_MCR1_DEFAULT,
MCBSP_MCR2_DEFAULT,
MCBSP_PCR_RMK(
MCBSP_PCR_IDLEEN_RESET, /* IDLEEN = 0 The McBSP remains activewhen the PERIPH domain is idled */
MCBSP_PCR_XIOEN_SP, /* XIOEN = 0 Transmit I/O enable bit,CLKX,FSX,DX,CLKS pins are serial port pins*/
MCBSP_PCR_RIOEN_SP, /* RIOEN = 0 Receive I/O enable bit,CLKR,FSR,DR,CLKS pins are serial port pins*/
MCBSP_PCR_FSXM_EXTERNAL, /* FSXM = 0 Transmit frame-sync modebit,0:transmit fram-sync is supplied by an external source via the FSX pin*/
MCBSP_PCR_FSRM_EXTERNAL, /* FSRM = 0 Receive frame-sync modebit,0:transmit fram-sync is supplied by an external source via the FSR pin*/
0, /* DXSTAT = N/A */
MCBSP_PCR_CLKXM_INPUT, /* CLKXM = 0 Transmit clock mode bit*/
MCBSP_PCR_CLKRM_INPUT, /* CLKRM = 0 Receive clock mode bit*/
MCBSP_PCR_SCLKME_NO, /* SCLKME = 0 Sample rate generator inputclock mode bit,used with CLKSM to select the input clock*/
MCBSP_PCR_FSXP_ACTIVEHIGH, /* FSXP = 0 Transmit frame-syncpolarity bit, 0,transmit frame-sync pulses are active high*/
MCBSP_PCR_FSRP_ACTIVEHIGH, /* FSRP = 1 Receive frame-sync polaritybit, 0,receive frame-sync pulses are active high*/
MCBSP_PCR_CLKXP_FALLING, /* CLKXP = 1 Transmit clock polaritybit,1,transmit data is driven on the rising edge of CLKX */
MCBSP_PCR_CLKRP_RISING /* CLKRP = 1 Receive clock polaritybit*/
),
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
};
/* Create DMA Receive Side Configuration */
DMA_Config dmaRcvConfig = { DMA_DMACSDP_RMK(
DMA_DMACSDP_DSTBEN_NOBURST, //Destination burst :-不使用突发
DMA_DMACSDP_DSTPACK_OFF, //Destination packing :-目标口禁止打包
DMA_DMACSDP_DST_DARAM, //Destination selection :-接收的目标口是DARAM
DMA_DMACSDP_SRCBEN_NOBURST, //Source burst :-源突发禁止
DMA_DMACSDP_SRCPACK_OFF, //Source packing :-源口禁止打包
DMA_DMACSDP_SRC_PERIPH, //Source selection :-外设mcbsp
DMA_DMACSDP_DATATYPE_16BIT //Data type :-设置数据类型16bit字长
), /* DMACSDP 源与目标参数寄存器 */
DMA_DMACCR_RMK(
DMA_DMACCR_DSTAMODE_POSTINC, //Destination address mode :-自动执行后增量（由于本程序中数据类型是16bit，所以+2）
DMA_DMACCR_SRCAMODE_CONST, //Source address mode :-源地址为恒定地址
DMA_DMACCR_ENDPROG_ON, //End of programmation bit :-
//DMA_DMACCR_REPEAT_ON, //Repeat condition :-不管编程配置结束位，结束传输自动初始化开始
DMA_DMACCR_REPEAT_OFF,
DMA_DMACCR_AUTOINIT_ON, //Auto initialization bit :-
DMA_DMACCR_EN_STOP, //Channel enable :-设置时先关闭通道
DMA_DMACCR_PRIO_LOW, //Channel priority :-设置为低优先级
DMA_DMACCR_FS_ELEMENT, //Frame/Element Sync :-单元事件同步
DMA_DMACCR_SYNC_REVT1 //Synchronization control :-McBSP1 Receive Event(REVT1)
), /* DMACCR 通道控制寄存器 */ DMA_DMACICR_RMK(
DMA_DMACICR_BLOCKIE_ON, //DMA_DMACICR_BLOCKIE_OFF, DMA_DMACICR_LASTIE_OFF,
//DMA_DMACICR_LASTIE_ON,
DMA_DMACICR_FRAMEIE_OFF,
DMA_DMACICR_FIRSTHALFIE_OFF,
DMA_DMACICR_DROPIE_OFF,
DMA_DMACICR_TIMEOUTIE_OFF
), /* DMACICR */
(DMA_AdrPtr)(MCBSP_ADDR(DRR11)), /* DMACSSAL */
0, /* DMACSSAU */
(DMA_AdrPtr)&pingrcv, /* DMACDSAL */
0, /* DMACDSAU */
2, /* DMACEN */
Num_sample/2, /* DMACFN */ 0, /* DMACFI */
0 /* DMACEI */
};
/* Create DMA Transmit Side Configuration */
DMA_Config dmaXmtConfig = { DMA_DMACSDP_RMK(
DMA_DMACSDP_DSTBEN_NOBURST,
DMA_DMACSDP_DSTPACK_OFF,
DMA_DMACSDP_DST_PERIPH,
DMA_DMACSDP_SRCBEN_NOBURST,
DMA_DMACSDP_SRCPACK_OFF,
DMA_DMACSDP_SRC_DARAM,
DMA_DMACSDP_DATATYPE_16BIT
), /* DMACSDP */
DMA_DMACCR_RMK(
DMA_DMACCR_DSTAMODE_CONST, //Destination address mode :-目标口地址为恒定地址
DMA_DMACCR_SRCAMODE_POSTINC, //Source address mode :-自动执行后增量（由于本程序中数据类型是16bit，所以+2）
DMA_DMACCR_ENDPROG_ON, //End of programmation bit :-
//DMA_DMACCR_REPEAT_ON, //Repeat condition :-不管编程配置结束位，结束传输自动初始化开始
DMA_DMACCR_REPEAT_OFF,
DMA_DMACCR_AUTOINIT_ON, //Auto initialization bit :-
DMA_DMACCR_EN_STOP, //Channel enable :-设置时先关闭通道
DMA_DMACCR_PRIO_LOW, //Channel priority :-设置为低优先级
DMA_DMACCR_FS_ELEMENT, //Frame/Element Sync :-单元事件同步
DMA_DMACCR_SYNC_XEVT1 //Synchronization control :-McBSP1 Transmit Event(XEVT1)
), /* DMACCR 通道控制寄存器 */
DMA_DMACICR_RMK(
DMA_DMACICR_BLOCKIE_ON, //Whole block interrupt enable :-块传输完成后中断使能
DMA_DMACICR_LASTIE_OFF, //Last frame interrupt enable :-
DMA_DMACICR_FRAMEIE_OFF, //Whole frame interrupt enable :-
DMA_DMACICR_FIRSTHALFIE_OFF, //Half frame interrupt enable :-
DMA_DMACICR_DROPIE_OFF, //Sync. event drop interrupt enable :-
DMA_DMACICR_TIMEOUTIE_OFF //Time out interrupt enable :-
), /* DMACICR */
(DMA_AdrPtr)&pingxmt[0], /* DMACSSAL */
0, /* DMACSSAU */
(DMA_AdrPtr)(MCBSP_ADDR(DXR11)), /* DMACDSAL */
0, /* DMACDSAU */
2, /* DMACEN */
Num_sample/2, /* DMACFN */ 0, /* DMACFI */
0 /* DMACEI */
};
/* Define a DMA_Handle object to be used with DMA_open function */
DMA_Handle hDmaRcv, hDmaXmt;
void delay(Uint32 k)
{
while(k–);
}
void Init_TLV320AIC23B(void)
{
/* Initialize I2C, using parameters in init structure */
/*初始化I2C的格式*/
i2c_status = 1;
/*I2C is undet reset*/
I2C_RSET(I2CMDR,0);
/*设置预分频寄存器,I2C的mode clock is 10MHz*/
delay(100);
I2C_RSET(I2CSAR,0x001A);
I2C_RSET(I2CMDR,0x0620);
I2C_setup(&I2Cinit);
/*设置I2C的Mater clock*/
I2C_RSET(I2CCLKL,100);
I2C_RSET(I2CCLKH,100);
I2C_getConfig(&testI2C);
/*reset AIC23*/
i2c_status = I2C_write( reset, //pointer to data array
2, //length of data to betransmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode ofoperation
30000 //time out for bus busy
); delay(1000);
/*设置AIC23各部分均工作*/
i2c_status = I2C_write( power_down_control,//pointer to data array
2, //length of data to betransmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode ofoperation
30000 //time out for bus busy
); /*设置AIC23的数字接口*/
i2c_status = I2C_write( digital_audio_inteface_format,//pointer to data array
2, //length of data to betransmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode ofoperation
30000 //time out for bus busy
);
/*设置AIC23模拟通路*/
i2c_status = I2C_write( analog_aduio_path_control,//pointer to data array
2, //length of data to betransmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode ofoperation
30000 //time out for bus busy
);
/*设置数字通路*/
i2c_status = I2C_write( digital_audio_path_control,//pointer to data array
2, //length of data to betransmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode ofoperation
30000 //time out for bus busy
); /*设置AIC23的采样率*/
i2c_status = I2C_write( sample_rate_control,//pointer to data array
2, //length of data to betransmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode ofoperation
30000 //time out for bus busy
);
/*设置耳机音量*/
i2c_status = I2C_write( left_headphone_volume_control,//pointer to data array
2, //length of data to betransmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode ofoperation
30000 //time out for bus busy
);
i2c_status = I2C_write( right_headphone_volume_control,//pointer to data array
2, //length of data to betransmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode ofoperation
30000 //time out for bus busy
); /*设置Line输入的音量*/
i2c_status = I2C_write( left_line_input_volume_control,//pointer to data array
2, //length of data to betransmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode ofoperation
30000 //time out for bus busy
);
i2c_status = I2C_write( right_line_input_volume_control,//pointer to dataarray
2, //length of data to betransmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode ofoperation
30000 //time out for bus busy
);
/*启动AIC23*/
i2c_status = I2C_write( digital_interface_activation,//pointer to data array
2, //length of data to be transmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode of operation
30000 //time out for bus busy
);
}
void main(void)
{
Uint16 aic23data = 0;
Uint16 i;
/* Initialize CSL library – This is REQUIRED !!! */
/*初始化CSL库*/
CSL_init();
/*设置系统的运行速度为140MHz*/
PLL_config(&myConfig);
/* Call function to effect transfer */
taskFxn();
/* Initialize I2C, using parameters in init structure */
Init_TLV320AIC23B();
// Set IVPD/IVPH to start of interrupt vector table */
IRQ_setVecs((Uint32)(&VECSTART));
while(1)
{
if (RecvComplete==TRUE)
{
Signal_process();
delay(10000);
}
}
}
void taskFxn(void)
{
Uint16 srcAddrHi, srcAddrLo;
Uint16 dstAddrHi, dstAddrLo;
Uint16 i;
for(i=0;i<Num_sample;i++)
{
pingrcv[i] = 0;
pongrcv[i] = 0;
pingxmt[i] = 0;
pongxmt[i] = 0;
}
/* By default, the TMS320C55xx compiler assigns all data symbols word */
/* addresses. The DMA however, expects all addresses to be byte */
/* addresses. Therefore, we must shift the address by 2 in order to */
/* change the word address to a byte address for the DMA transfer. */ srcAddrHi = (Uint16)(((Uint32)(MCBSP_ADDR(DRR11))) >> 15) & 0xFFFFu;
srcAddrLo = (Uint16)(((Uint32)(MCBSP_ADDR(DRR11))) << 1) & 0xFFFFu;
dstAddrHi = (Uint16)(((Uint32)(&pingrcv)) >> 15) & 0xFFFFu;
dstAddrLo = (Uint16)(((Uint32)(&pingrcv)) << 1) & 0xFFFFu;
dmaRcvConfig.dmacssal = (DMA_AdrPtr)srcAddrLo;
dmaRcvConfig.dmacssau = srcAddrHi;
dmaRcvConfig.dmacdsal = (DMA_AdrPtr)dstAddrLo;
dmaRcvConfig.dmacdsau = dstAddrHi;
srcAddrHi = (Uint16)(((Uint32)(&pingxmt[0])) >> 15) & 0xFFFFu;
srcAddrLo = (Uint16)(((Uint32)(&pingxmt[0])) << 1) & 0xFFFFu;
dstAddrHi = (Uint16)(((Uint32)(MCBSP_ADDR(DXR11))) >> 15) & 0xFFFFu;
dstAddrLo = (Uint16)(((Uint32)(MCBSP_ADDR(DXR11))) << 1) & 0xFFFFu;
dmaXmtConfig.dmacssal = (DMA_AdrPtr)srcAddrLo;
dmaXmtConfig.dmacssau = srcAddrHi;
dmaXmtConfig.dmacdsal = (DMA_AdrPtr)dstAddrLo;
dmaXmtConfig.dmacdsau = dstAddrHi;
// Open MCBSP Port 1 and set registers to their power on defaults */
hMcbsp = MCBSP_open(MCBSP_PORT1, MCBSP_OPEN_RESET);
/* Open DMA channels 4 & 5 and set regs to power on defaults */
hDmaRcv = DMA_open(DMA_CHA4,DMA_OPEN_RESET);
hDmaXmt = DMA_open(DMA_CHA5,DMA_OPEN_RESET);
/* Get interrupt event associated with DMA receive and transmit */
xmtEventId = DMA_getEventId(hDmaXmt);
rcvEventId = DMA_getEventId(hDmaRcv);
/* Temporarily disable interrupts and clear any pending */
/* interrupts for MCBSP transmit */
old_intm = IRQ_globalDisable();
/* Clear any pending interrupts for DMA channels */
IRQ_clear(xmtEventId);
IRQ_clear(rcvEventId);
/* Enable DMA interrupt in IER register */
IRQ_enable(xmtEventId);
IRQ_enable(rcvEventId);
/* Set Start Of Interrupt Vector Table */
IRQ_setVecs(0x10000);
/* Place DMA interrupt service addresses at associate vector */
IRQ_plug(xmtEventId,&dmaXmtIsr);
IRQ_plug(rcvEventId,&dmaRcvIsr);
/* Write values from configuration structure to MCBSP control regs */
MCBSP_config(hMcbsp, &Mcbsp1Config);
/* Write values from configuration structure to DMA control regs */
DMA_config(hDmaRcv,&dmaRcvConfig);
DMA_config(hDmaXmt,&dmaXmtConfig);
xfreebuf = xpongbuf;
rfreebuf = rpongbuf;
/* Enable all maskable interrupts */
IRQ_globalEnable();
// Start Sample Rate Generator and Enable Frame Sync MCBSP_start(hMcbsp,
MCBSP_SRGR_START | MCBSP_SRGR_FRAMESYNC,
0x300u);
/* Enable DMA */
DMA_start(hDmaRcv);
DMA_start(hDmaXmt);
/* Take MCBSP transmit and receive out of reset */
MCBSP_start(hMcbsp,
MCBSP_XMIT_START | MCBSP_RCV_START,
0u);
while(DMA_FGETH(hDmaRcv, DMACCR, ENDPROG));
dstAddrHi = (Uint16)(((Uint32)(&pongrcv)) >> 15) & 0xFFFFu;
dstAddrLo = (Uint16)(((Uint32)(&pongrcv)) << 1) & 0xFFFFu;
dmaRcvConfig.dmacdsal = (DMA_AdrPtr)dstAddrLo;
dmaRcvConfig.dmacdsau = dstAddrHi;
srcAddrHi = (Uint16)(((Uint32)(&pongxmt[0])) >> 15) & 0xFFFFu;
srcAddrLo = (Uint16)(((Uint32)(&pongxmt[0])) << 1) & 0xFFFFu;
dmaXmtConfig.dmacssal = (DMA_AdrPtr)srcAddrLo;
dmaXmtConfig.dmacssau = srcAddrHi;
DMA_FSETH(hDmaRcv, DMACCR, ENDPROG,1);
DMA_FSETH(hDmaXmt, DMACCR, ENDPROG,1);
}
void Signal_process(void)
{
Uint16 i,j=0;
if(rfreebuf == rpingbuf)
{
/*
for(i=0;i<Num_sample;i=i+2)
// for(i=0;i<Num_sample;i=i+1)
{
Leftchannel_Buffer[j] = pongrcv[i];
Rightchannel_Buffer[j] = pongrcv[i+1];
j++;
}
}
else
{
for(i=0;i<Num_sample;i=i+2)
// for(i=0;i<Num_sample;i=i+1)
{
Leftchannel_Buffer[j] = pingrcv[i];
Rightchannel_Buffer[j] = pingrcv[i+1];
j++;
}
}
j = 0;
if(xfreebuf == xpingbuf)
{
for(i=0;i<Num_sample;i=i+2)
// for(i=0;i<Num_sample;i=i+1)
{
pongxmt[i] = Leftchannel_Buffer[j];
pongxmt[i+1] = Rightchannel_Buffer[j];
j++;
}
}
else
{
for(i=0;i<Num_sample;i=i+2)
// for(i=0;i<Num_sample;i=i+1)
{
pingxmt[i] = Leftchannel_Buffer[j];
pingxmt[i+1] = Rightchannel_Buffer[j];
j++;
}*/
}
}
interrupt void dmaRcvIsr(void){
static Uint16 *rcvptr;
Uint16 ptraddrhi, ptraddrlow;
DMA_FSETH(hDmaRcv,DMACSR,BLOCK,0);
RecvComplete=TRUE;
dmaRcvIsr_count++;
if(rfreebuf == rpingbuf)
{
rfreebuf = rpongbuf;
rcvptr = pongrcv;
}
else
{
rfreebuf = rpingbuf;
rcvptr = pingrcv;
}
while(DMA_FGETH(hDmaRcv, DMACCR, ENDPROG));
ptraddrhi = (Uint16)(((Uint32)(rcvptr)) >> 15) & 0xFFFFu;
//因为DMA都使用字节地址，所以必须左移一位
ptraddrlow= (Uint16)(((Uint32)(rcvptr)) << 1) & 0xFFFFu;
DMA_RSETH(hDmaRcv, DMACSSAU, ptraddrhi);
DMA_RSETH(hDmaRcv, DMACSSAL, ptraddrlow);
DMA_FSETH(hDmaRcv, DMACCR, ENDPROG,1);
DMA_RGETH(hDmaRcv, DMACSR);
State_Work = TRUE;
}
interrupt void dmaXmtIsr(void){
static Uint16 *xmtptr;
Uint16 ptraddrhi,ptraddrlow;
DMA_FSETH(hDmaXmt,DMACSR,BLOCK,0);
RecvComplete=FALSE;
dmaXmtIsr_count++;
if(xfreebuf == xpingbuf)
{
xfreebuf = xpongbuf;
xmtptr = pongxmt;
}
else
{
xfreebuf = xpingbuf;
xmtptr = pingxmt;
}
while(DMA_FGETH(hDmaXmt, DMACCR, ENDPROG));
//修改DMA地址
ptraddrhi =(Uint16)(((Uint32)(xmtptr)) >> 15) & 0xFFFFu;
//因为DMA都使用字节地址，所以必须左移一位
ptraddrlow= (Uint16)(((Uint32)(xmtptr)) << 1) & 0xFFFFu;
DMA_RSETH(hDmaXmt, DMACSSAU, ptraddrhi);
DMA_RSETH(hDmaXmt, DMACSSAL, ptraddrlow);
DMA_FSETH(hDmaXmt, DMACCR, ENDPROG,1); DMA_RGETH(hDmaXmt, DMACSR);
}
Shine：
先不要加aic23功能，测一下mcbsp+DMA自环模式是否能正常进收发中断？
Gong Yu：
回复 Shine:
谢谢，我将MCBSP_SPCR1_RMK设置为MCBSP_SPCR1_DLB_ON,自闭环方式，发现问题仍然存在！
Shine：
回复 Gong Yu:
建议一步步调试，先单独调mcbsp自环功能，再调试dma功能，再调mcbsp+dma，最后调mcbsp+dma+aic23.
Yao Chen4：
回复 Shine:
你好，请问C5509A中MCBSP可以配置成IIS从设备吗？
Shine：
回复 Yao Chen4:
可以，mcbsp支持IIS格式。
Yao Chen4：
回复 Shine:
您好，能把您的QQ或者邮箱发我邮箱吗？
