SPORT_TEST.rar_dsp_sport _test在dsp_音频输入

**************************************************************************************************** ADSP-BF533 EZ-KIT Lite ASM Based AD1836 TALKTHRU Analog Devices, Inc. DSP Division Three Technology Way P.O. Box 9106 Norwood, MA 02062 Date Created: 04/03/03 _____________________________________________________________________________________________________ This directory contains an example ADSP-BF533 subroutine that demonstrates the initialization of the link between SPORT0 on the ADSP-BF533 and the AD1836 stereo Codec. This is done by initializing the link in I2S mode and implementing a simple talk-through routine. Files contained in this directory: readme.txt this file main.asm ASM file containing the main program and variable declaration Initialize.asm ASM file containing all initialization routines interrupts.asm ASM file containing the interrupt service routine for SPORT0_RX Process_data.asm ASM file for processing incoming data Talkthrough.h ASM header file containing define sections startup.asm Generic Startup file startup.h header file which contains #define found in startup.asm ASM_Talkthrough_I2S.dpj VisualDSP++ project file _______________________________________________________________________________ CONTENTS I. FUNCTIONAL DESCRIPTION II. IMPLEMENTATION DESCRIPTION III. OPERATION DESCRIPTION I. FUNCTIONAL DESCRIPTION The Talkthru demo demonstrates the initialization of SPORT0 to establish a link between the ADSP-BF533 and the AD1836 Codec. The program simply sets up the SPI port to configure the AD1836 codec in I2S mode. SPORT0 is then setup to receive/transmit audio samples from the AD1836. Audio samples received from the AD1836 are moved into the DSP's receive buffer, using DMA. The samples are processed by the ADSP-BF533 and place in the transmit buffer. In turn, the transmit buffer is used to transmit data to the AD1836. This results in a simple talk-through where data is moved in and out of the DSP with out performing any computations on the data. II. IMPLEMENTATION DESCRIPTION The Initialization module initializes: 1. EBIU setup 2. Flash setup 3. SPI setup to initialize AD1836 codec 4. SPORT0 setup 5. DMA setup 6. Interrupt configuration III. OPERATION DESCRIPTION - Open the project "ASM_Talkthrough_I2S.dpj" in the VisualDSP Integrated Development Environment (IDDE). - Under the "Project" menu, select "Build Project" (program is then loaded automatically into DSP). - Turn pin 5 and 6 of SW9 on the AD-BF533 EZ-KIT Lite ON, these will connect RSCLK0 -> TSCLK0 and RFS0 -> TFS0. - Setup an input source (such as a radio) to the audio in jack and an output source (such as headphones) to the audio out jack of the EZ-KIT Lite. See the ADSP-BF533 EZ-KIT Lite User's Manual for more information on setting up the hardware. - Select "Run" from the "Debug" menu of VisualDSP. - Listen to the operation of the talk-through