最近在跑sharc中的例程出现问题 是我的block based talk through程序问题？

hi，
  最近在跑sharc中的例程的时候，

运行Examples中的Block Based TalkThru (C)程序时，开发板连接音频线，点击run运行后，out端接speaker，可以听到音乐，但是点击Halt按钮后，仍然播放音乐，如何修改程序，可以点击run运行程序，点击Halt暂停不播放音乐。

2、关于工程文件中initSPORT.c，程序代码如下：
#include "tt.h"
#define DAC4
unsigned int PCI = 0x00080000 ;
unsigned int OFFSET = 0x00080000 ;

// TCB blocks for Chaining
//Each block will be used for:
// Filling from the ADC
// Processing filled data
// Sending to DAC
//
//Each one is doing only one of these steps for each SPORT interrupt.

//For this example the startup state is
// Start to 1st interrupt: Block_A is filled first, Block_C is sent
// 1st int to 2nd int: Block_C filled, Block_A processed, Block_B sent
// 2nd int to 3rd int: Block_B filled, Block_C processed, Block_A sent
// 3rd int to 4th int: Block_A filled, Block_B processed, Block_C sent
unsigned int Block_A[NUM_SAMPLES] ;
unsigned int Block_B[NUM_SAMPLES] ;
unsigned int Block_C[NUM_SAMPLES] ;

//Set up the TCBs to rotate automatically
int TCB_Block_A[4] = { 0, sizeof(Block_A), 1, 0};;
int TCB_Block_B[4] = { 0, sizeof(Block_B), 1, 0};
int TCB_Block_C[4] = { 0, sizeof(Block_C), 1, 0};

void InitSPORT()
{
//Proceed from Block A to Block C
TCB_Block_A[0] = (int) TCB_Block_C + 3 - OFFSET + PCI ;
TCB_Block_A[3] = (unsigned int) Block_A - OFFSET ;
//Proceed from Block B to Block A
TCB_Block_B[0] = (int) TCB_Block_A + 3 - OFFSET + PCI ;
TCB_Block_B[3] = (unsigned int) Block_B - OFFSET ;
//Proceed from Block C to Block B
TCB_Block_C[0] = (int) TCB_Block_B + 3 - OFFSET + PCI ;
TCB_Block_C[3] = (unsigned int) Block_C - OFFSET ;
//Clear the Mutlichannel control registers
*pSPMCTL0 = 0;
*pSPMCTL1 = 0;
*pSPMCTL2 = 0;
*pSPCTL0 = 0 ;
*pSPCTL1 = 0 ;
*pSPCTL2 = 0 ;
//============================================================
//
// Configure SPORT 0 for input from ADC
//
//------------------------------------------------------------
*pSPCTL0 = (OPMODE | SLEN24 | SPEN_A | SCHEN_A | SDEN_A);
// Enabling Chaining
// Block A will be filled first
*pCPSP0A = (unsigned int) TCB_Block_A - OFFSET + 3 ;
//============================================================
//
// Configure SPORTs 1 & 2 for output to DACs 1-4
//
//------------------------------------------------------------
#ifdef DAC1
*pSPCTL1 = (SPTRAN | OPMODE | SLEN24 | SPEN_A | SCHEN_A | SDEN_A) ;
// write to DAC1
*pCPSP1A = (unsigned int) TCB_Block_C - OFFSET + 3 ;
#endif
#ifdef DAC2
*pSPCTL1 |= (SPTRAN | OPMODE | SLEN24 | SPEN_B | SCHEN_B | SDEN_B) ;
// write to DAC2
*pCPSP1B = (unsigned int) TCB_Block_C - OFFSET + 3 ;
#endif
#ifdef DAC3
*pSPCTL2 = (SPTRAN | OPMODE | SLEN24 | SPEN_A | SCHEN_A | SDEN_A) ;
    // write to DAC3
*pCPSP2A = (unsigned int) TCB_Block_C - OFFSET + 3 ;
#endif
#ifdef DAC4
*pSPCTL2 |= (SPTRAN | OPMODE | SLEN24 | SPEN_B | SCHEN_B | SDEN_B) ;
// write to DAC4
*pCPSP2B = (unsigned int) TCB_Block_C - OFFSET + 3 ;
    #endif
}
    我想修改AD采集回来的电压信号在将修改后的信号通过DA进行输出播放，需要如何对程序进行修改，之前修改后，输出的还是原来的信号。
     需要修改[size=15.3333330154419px]initSPORT.c的模块还是修改其他模块？
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