www.pudn.com > DSP5502_audio_loopback.rar > DEC5502_CODEC.c
/******************************************************************************/ /* Copyright 2004 by SEED Electronic Technology LTD. */ /* All rights reserved. SEED Electronic Technology LTD. */ /* Restricted rights to use, duplicate or disclose this code are */ /* granted through contract. */ /* */ /* */ /******************************************************************************/ /* DESCRIPTION: */ /* */ /* This is an audio signal sample and play example for CODEC of C5502 */ /*----------------------------------------------------------------------------*/ /* MODULE NAME... IIC and Mcbsp */ /* FILENAME...... 5502_CODEC.c */ /* DATE CREATED.. Mon 6/20/2004 */ /* COMPONENT..... */ /* PREREQUISITS.. */ /*----------------------------------------------------------------------------*/ /* DESCRIPTION: */ /* */ /* This example is that the codec is controled by the IIC and Mcbsp */ /*----------------------------------------------------------------------------*/ #include#include #include #include #include #include #include #include "E2PROM_Function.h" #include "CODEC.h" #undef CODEC_ADDR #define CODEC_ADDR 0x1A /*------------------------------------------------------------------------------------*/ // // Config McBSP: Use McBSP to send and receive the data between DSP and AIC23B // /*------------------------------------------------------------------------------------*/ MCBSP_Config Mcbsp1Config = { MCBSP_SPCR1_RMK( MCBSP_SPCR1_DLB_OFF, // DLB = 0 MCBSP_SPCR1_RJUST_LZF, // RJUST = 0,right justify the data and zero fill the MSBs MCBSP_SPCR1_CLKSTP_DISABLE, // CLKSTP = 0 MCBSP_SPCR1_DXENA_ON, // DXENA = 1,DX delay enabler on 0, // Reserved = 0 MCBSP_SPCR1_RINTM_RRDY, // RINTM = 0 MCBSP_SPCR1_RSYNCERR_NO, // RSYNCER = 0 MCBSP_SPCR1_RFULL_NO, // RFULL = 0 MCBSP_SPCR1_RRDY_NO, // RRDY = 0 MCBSP_SPCR1_RRST_DISABLE // RRST = 0; Disable receiver ), MCBSP_SPCR2_RMK( MCBSP_SPCR2_FREE_NO, // FREE = 0 MCBSP_SPCR2_SOFT_NO, // SOFT = 0 MCBSP_SPCR2_FRST_FSG, // FRST = 1 ; Enable the frame-sync logic MCBSP_SPCR2_GRST_CLKG, // GRST = 1 ; The sample rate generator is take out of its reset state MCBSP_SPCR2_XINTM_XRDY, // XINTM = 0 MCBSP_SPCR2_XSYNCERR_NO, // XSYNCER =0 MCBSP_SPCR2_XEMPTY_NO, // XEMPTY = 0 MCBSP_SPCR2_XRDY_NO, // XRDY = 0 MCBSP_SPCR2_XRST_DISABLE // XRST = 0 Disable transimitter ), // 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 No companding,any size data, MSB received first MCBSP_RCR2_RFIG_YES, // RFIG = 1 Frame-sync ignore MCBSP_RCR2_RDATDLY_1BIT // RDATDLY = 1 1-bit data delay ), 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(1), // XFRLEN2 = 0 MCBSP_XCR2_XWDLEN2_8BIT, // XWDLEN2 = 0 MCBSP_XCR2_XCOMPAND_MSB, // XCOMPAND = 0 MCBSP_XCR2_XFIG_YES, // XFIG = 1 Unexpected Frame-sync ignore MCBSP_XCR2_XDATDLY_1BIT // XDATDLY = 1 1-bit data delay ), 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 Tranmit frame-syn is provided by AIC23B MCBSP_PCR_FSRM_EXTERNAL, // FSRM = 0 Receive frame-syn is provided by AIC23B MCBSP_PCR_CLKXM_INPUT, // CLKR is input MCBSP_PCR_CLKRM_INPUT, // CLKX is input MCBSP_PCR_SCLKME_NO, // SCLKME=0 CLKG is taken from the McBSP internal input clock MCBSP_PCR_CLKSSTAT_0, // The signal on the CLKS pin is low MCBSP_PCR_DXSTAT_0, // Drive the signal on the DX pin low MCBSP_PCR_DRSTAT_0, // The signal on the DR pin is low MCBSP_PCR_FSXP_ACTIVEHIGH, // FSXP = 1 Because a falling edge on LRCIN or LRCOUT starts data transfer MCBSP_PCR_FSRP_ACTIVELOW, // FSRP = 1 MCBSP_PCR_CLKXP_FALLING, // CLKXP = 1 The falling edge of BCLK starts data transfer 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 }; // 定义McBSP的句柄 MCBSP_Handle hMcbsp; /*------------------------------------------------------------------------------------*/ // // Config I2C: Use I2C to interface CODEC control interface // /*------------------------------------------------------------------------------------*/ I2C_Setup Setup = { 0, // 7 bit address mode 0x0000, // own address 60, // clkout value (Mhz) 400, // a number between 10 and 400 0, // 8 bits/byte to be received or transmitted 0, // DLB mode off 0 // FREE mode off }; /*------------------------------------------------------------------------------------*/ // // Config CODEC control registers // /*------------------------------------------------------------------------------------*/ // 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]={ Codec_DAIF_REV, DAIF_MS(1)+DAIF_LRSWAP(0)+DAIF_LRP(1)+DAIF_IWL(0)+DAIF_FOR(3)}; // AIC23的波特率设置,采样率为48k,CLKIN=CLKOUT=MCLK // 时钟模式设为普通模式,基过采样率为250Fs Uint16 Sample_Rate_Control[2] = { Codec_SRC_REV, SRC_CLKIN(0)+SRC_CLKOUT(0)+SRC_SR(6)+SRC_BOSR(0)+SRC_USB(0)}; // AIC23寄存器复位 Uint16 Reset[2] ={ Codec_RST_REV, RST_RES}; // AIC23节电方式设置，所有部分均处于工作状态 Uint16 Power_Down_Control[2] ={ Codec_PDC_REV, PDC_DEFAULT}; // AIC23模拟音频的控制:关掉侧音 // DAC使能,ADC输入选择为音频输入 Uint16 Analog_Aduio_Path_Control[2] = { Codec_AAPC_STA2(0), AAPC_STA10(0)+AAPC_STE(0)+AAPC_DAC(1)+AAPC_BYP(0)+AAPC_INSEL(0)+AAPC_MICM(0)+AAPC_MICB(0)}; // AIC23数字音频通路的控制 // 使能ADC高通滤波 Uint16 Digital_Audio_Path_Control[2] ={ Codec_DAPC_REV, DAPC_DACM(0)+DAPC_DEEMP(0)+DAPC_ADCHP(1)}; // AIC23数字接口的使能 Uint16 Digital_Interface_Activation[2] ={ Codec_DIA_REV, DIA_ACT(1)}; // AIC23左通路音频调节 Uint16 Left_Line_Input_Volume_Control[2] ={ Codec_LLIVC_LPS(1), LLIVC_LIM(0)+LLIVC_LIV(23)}; // AIC23右通路音频调节 Uint16 Right_Line_Input_Volume_Control[2] = { Codec_RLIVC_RLS(1), RLIVC_RIM(0)+RLIVC_RIV(23)}; // AIC23耳机左通路音频调节 Uint16 Left_Headphone_Volume_Control[2] = { Codec_LHPVC_LRS(1), LHPVC_LZC(1)+LHPVC_LHV(127)}; // AIC23耳机右通路音频调节 Uint16 Right_Headphone_Volume_Control[2] = { Codec_RHPVC_RLS(1), LHPVC_RZC(1)+LHPVC_RHV(127)}; /*------------------------------------------------------------------------------------*/ // // FUNCTION: MAIN // /*------------------------------------------------------------------------------------*/ void main(void) { Uint16 DataTempLeft = 0; // 暂存采样数据 Uint16 DataTempRight = 0; // Initialize CSL library - This is REQUIRED !!! CSL_init(); // The main frequency of system is 240MHz // 该频率是为了设置IIC模块的需要设置的,为了使用I2C_setup函数 PLL_setFreq(1, 0xC, 0, 1, 3, 3, 0); // Initialize I2C, Using parameters in I2C_Setup structure MyI2C_setup(&Setup); // Open McBSP port 1 and get a McBSP type handle hMcbsp = MCBSP_open(MCBSP_PORT1,MCBSP_OPEN_RESET); // Config McBSP port 1 by use previously defined structure MCBSP_config(hMcbsp,&Mcbsp1Config); // Start McBSP1 MCBSP_start(hMcbsp, MCBSP_RCV_START | MCBSP_XMIT_START, 0); /*设置AIC23各部分均工作*/ MyI2C_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*/ MyI2C_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AIC23模拟通路*/ MyI2C_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 ); /*设置数字通路*/ MyI2C_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AIC23的采样率*/ MyI2C_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 ); /*设置耳机音量*/ MyI2C_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 ); /*设置Line输入的音量*/ MyI2C_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 ); /*启动AIC23*/ MyI2C_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 ); /*------------------------------------------------------------------------------------*/ // Receive the ADC output data of CODEC // Then output the received data to DAC of CODEC /*------------------------------------------------------------------------------------*/ while(TRUE) { /* 左通路数据 */ while(!MCBSP_rrdy(hMcbsp)){}; DataTempLeft = MCBSP_read16(hMcbsp); /* 右通路数据 */ while(!MCBSP_rrdy(hMcbsp)){}; DataTempRight = MCBSP_read16(hMcbsp); /* 左声道耳机输出 */ while(!MCBSP_xrdy(hMcbsp)) {}; MCBSP_write16(hMcbsp,DataTempLeft); /* 右声道耳机输出 */ while(!MCBSP_xrdy(hMcbsp)) {}; MCBSP_write16(hMcbsp,DataTempRight); }; } /******************************************************************************/ // No more /******************************************************************************/