TI中文支持网在用DSP5509A和AIC23B对采集的音频信号进行滤波处理 然后将处理后的信号通过扬声器输出，但是扬声器并没有声音。查看输出到扬声器的值也合理，请教一下是什么原因呢？AIC23b的配置程序如下：
/*
* aic23.c
*
* Created on: 20191217
* Author: QIAN MN
*/
#include "aic23.h"
#include <csl_i2c.h>
#include <csl_mcbsp.h>
MCBSP_Config Mcbsptest;
/*McBSP set,we use mcbsp1 to send and recieve the data between DSP and AIC23*/
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 */
MCBSP_SPCR1_CLKSTP_DISABLE, /* CLKSTP = 0 */
MCBSP_SPCR1_DXENA_ON, /* DXENA = 1 */
0, /* ABIS = 0 */
MCBSP_SPCR1_RINTM_RRDY, /* RINTM = 0 */
0, /* RSYNCER = 0 */
MCBSP_SPCR1_RRST_DISABLE /* RRST = 0 */
),
MCBSP_SPCR2_RMK(
MCBSP_SPCR2_FREE_NO, /* FREE = 0 */
MCBSP_SPCR2_SOFT_NO, /* SOFT = 0 */
MCBSP_SPCR2_FRST_FSG, /* FRST = 0 */
MCBSP_SPCR2_GRST_CLKG, /* GRST = 0 */
MCBSP_SPCR2_XINTM_XRDY, /* XINTM = 0 */
0, /* XSYNCER = N/A */
MCBSP_SPCR2_XRST_DISABLE /* XRST = 0 */
),
/*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 */
MCBSP_RCR1_RWDLEN1_16BIT /* RWDLEN1 = 2 */
),
MCBSP_RCR2_RMK(
MCBSP_RCR2_RPHASE_SINGLE, /* RPHASE = 0 */
MCBSP_RCR2_RFRLEN2_OF(0), /* RFRLEN2 = 0 */
MCBSP_RCR2_RWDLEN2_8BIT, /* RWDLEN2 = 0 */
MCBSP_RCR2_RCOMPAND_MSB, /* RCOMPAND = 0 */
MCBSP_RCR2_RFIG_YES, /* RFIG = 0 */
MCBSP_RCR2_RDATDLY_1BIT /* RDATDLY = 1 */
),
MCBSP_XCR1_RMK(
MCBSP_XCR1_XFRLEN1_OF(1), /* XFRLEN1 = 1 */
MCBSP_XCR1_XWDLEN1_16BIT /* XWDLEN1 = 2 */
),
MCBSP_XCR2_RMK(
MCBSP_XCR2_XPHASE_SINGLE, /* XPHASE = 0 */
MCBSP_XCR2_XFRLEN2_OF(0), /* XFRLEN2 = 0 */
MCBSP_XCR2_XWDLEN2_8BIT, /* XWDLEN2 = 0 */
MCBSP_XCR2_XCOMPAND_MSB, /* XCOMPAND = 0 */
MCBSP_XCR2_XFIG_YES, /* XFIG = 0 */
MCBSP_XCR2_XDATDLY_1BIT /* XDATDLY = 1 */
),
MCBSP_SRGR1_DEFAULT,
MCBSP_SRGR2_DEFAULT,
MCBSP_MCR1_DEFAULT,
MCBSP_MCR2_DEFAULT,
MCBSP_PCR_RMK(
MCBSP_PCR_IDLEEN_RESET, /* IDLEEN = 0 */
MCBSP_PCR_XIOEN_SP, /* XIOEN = 0 */
MCBSP_PCR_RIOEN_SP, /* RIOEN = 0 */
MCBSP_PCR_FSXM_EXTERNAL, /* FSXM = 0 */
MCBSP_PCR_FSRM_EXTERNAL, /* FSRM = 0 */
0, /* DXSTAT = N/A */
MCBSP_PCR_CLKXM_INPUT, /* CLKXM = 0 */
MCBSP_PCR_CLKRM_INPUT, /* CLKRM = 0 */
MCBSP_PCR_SCLKME_NO, /* SCLKME = 0 */
MCBSP_PCR_FSXP_ACTIVEHIGH, /* FSXP = 0 */
MCBSP_PCR_FSRP_ACTIVEHIGH, /* FSRP = 1 */
MCBSP_PCR_CLKXP_FALLING, /* CLKXP = 1 */
MCBSP_PCR_CLKRP_RISING /* CLKRP = 1 */
),
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
};
/* 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;
/*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,地址为0x00001110(0x0e),控制为：0x01010011(0x53)*/
Uint16 digital_audio_inteface_format[2]={0x0e,0x53};
/*AIC23的波特率设置，采样率为44.1K,地址为：0x00010000(0x10),控制为：0x00100011(0x22)
* 若果控制位0x2c的话就是normal模式，采样率8.021*/
Uint16 sample_rate_control[2] = {0x10,0x22};
/*AIC23寄存器复位,地址为0x00011110(0x1e),控制为00000000(0x00)*/
Uint16 reset[2] ={0x1e,0x00};
/*AIC23节电方式设置，所有部分均所与工作状态,地址为0x00001100(0x0c),控制为0x00000001(0x00)*/
Uint16 power_down_control[2] ={0x0c,0x01};
/*AIC23模拟音频的控制.DAC使能，ADC输入选择为mic增益20dB 00001000,地址为0x00001000(0x08),控制为0x00010101(0x15)*/
Uint16 analog_aduio_path_control[2] ={0x08,0x15};
/*AIC23数字音频通路的控制00001010,地址为0x00001010(0x0a),控制为0x00000101(0x05),ADC禁止滤波，书上有问题*/
Uint16 digital_audio_path_control[2] ={0x0a,0x05};
/*AIC23数字接口的使能110,地址为：0x00010010(控制为0x12),控制为0x00000001(0x01)*/
Uint16 digital_interface_activation[2] ={0x12,0x01};
/*AIC23左通路音频调节地址00000000,地址为0x00000000(0x00),控制为0x00011111(0x1F)*/
Uint16 left_line_input_volume_control[2] ={0x00,0x1F};
/*AIC23右通路音频调节地址00000010,地址为0x00000010(0x02),控制为0x00011111(0x1F)*/
Uint16 right_line_input_volume_control[2] ={0x02,0x1F};
/*AIC23耳机左通路音频调节00000101,地址为0x00000101(0x04),控制为0x01111111*/
Uint16 left_headphone_volume_control[2] ={0x04,0xf0};
/*AIC23耳机右通路音频调节0111,地址为0x00000110,控制为0x01111111*/
Uint16 right_headphone_volume_control[2] = {0x06,0xf0};
/*定义McBSP的句柄*/
MCBSP_Handle hMcbsp;
static void delay(Uint32 k)
{
while(k–);
}
Uint16 aic_23init(void)
{
Uint16 i2c_status;
i2c_status = 1;
/* Initialize I2C, using parameters in init structure */
/*初始化CSL库*/
CSL_init();
/*I2C is undet reset*/
/*初始化I2C的格式*/
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);
/*初始化McBSP0*/
hMcbsp = MCBSP_open(MCBSP_PORT1,MCBSP_OPEN_RESET);
/*设置McBSP0*/
MCBSP_config(hMcbsp,&Mcbsp1Config);
/*启动McBSP0*/
MCBSP_start(hMcbsp,
MCBSP_RCV_START | MCBSP_XMIT_START,
0);
MCBSP_getConfig(hMcbsp,&Mcbsptest);
/*reset AIC23*/
i2c_status = I2C_write( reset, //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
);
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 be transmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode of operation
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 be transmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode of operation
30000 //time out for bus busy
);
/*设置数字通路*/
i2c_status = I2C_write( analog_aduio_path_control,//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
);
/*设置AIC23的采样率*/
i2c_status = I2C_write( digital_audio_path_control,//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
);
/*设置耳机音量*/
i2c_status = I2C_write( sample_rate_control,//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
);
/*璁剧疆鑰虫満闊抽噺*/
i2c_status = I2C_write( left_headphone_volume_control,//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
);
i2c_status = I2C_write( right_headphone_volume_control,//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
);
/*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 be transmitted
1, //master or slaver
CODEC_ADDR, //slave address to transmit to
1, //transfer mode of operation
30000 //time out for bus busy
);
i2c_status = I2C_write( right_line_input_volume_control,//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
);
/*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
);
return i2c_status;
}
KW X：
哦。。。音频问题咋弄到电源提问里了？建议移过去。
Johnsin Tao：
回复 KW X:
Hi这个是电源论坛，建议将问题放到对应芯片所在论坛。
Johnsin Tao：
回复 KW X:
Hi这个是电源论坛，建议将问题放到对应芯片所在论坛。
