C6701关于定时器与MCBSP的问题

A，使用的芯片是SMJ320C6701

B，硬件环境是自己制作的PCB板

软件环境：CCS3.3

C，附上程序

//#include <math.h>
#include <csl.h>
#include <stdio.h>
#include <std.h>
#include <csl_irq.h>
#include <csl_emif.h>
#include <csl_mcbsp.h>
#include <emif_init.h>
#include <mcbsp_init.h>
#include <time_init.h>
/************************************************/

Uint32 *Src_StartAdd;
Uint32 *Dst_StartAdd;
Uint32 TempData[4096];
Uint32 Length=0x00001000;
/**************MCBSP*************************/
static MCBSP_Handle hMcbsp0; //句柄设置
static MCBSP_Handle hMcbsp1; //句柄设置
/**************************定时器****************/
static Uint32 TimerControl;
static Uint32 TimerPeriod;
static Uint32 TimerCount;
static TIMER_Handle hTimer1;
static Uint32 TimerEventId;

#define TIMER_CNT 100
#define FALSE 0
#define TRUE 1

//static Uint32 cnt = 0;
static Uint32 y=0;
static Uint32 i=0;
static Uint32 cnt = 0;
void TimerEventHandler(void);
extern far void vectors(); //中断向量表
void startMCBSP(void); //串口打开
//void RS422_transfer();
void DINGSHIQI();

void main()
{
/**************定义****************/
volatile Uint32 x,y;
int success = 1;
DEC6701_INIT(); //EMIF初始化
DEC6701_TIMER(); //定时器初始化
CSL_init();
/**********************************/

Src_StartAdd = (Uint32 *)0x02000000;//SRAM清零
for(i=0;i<0x00400000;i++)
{
*(Src_StartAdd+i) = 0;
}

hMcbsp0 = MCBSP_open(MCBSP_DEV0, MCBSP_OPEN_RESET); //句柄设置
hMcbsp1 = MCBSP_open(MCBSP_DEV1, MCBSP_OPEN_RESET);

DEC6701_MCBSP_INIT(); //初始化MCBSP0.1
startMCBSP(); //启动MCBSP

for (y=0; y<0x00080000; y++)
{
while (!MCBSP_xrdy(hMcbsp0));//等待
MCBSP_write(hMcbsp0,y);


while (!MCBSP_rrdy(hMcbsp0));

x = MCBSP_read(hMcbsp0);


if (x != y)
{
success = 0;
break;
}
}
MCBSP_close(hMcbsp0);
printf("SUCCESS=%d",success);
// RS422_transfer();
/**************************************************
****************定时器发送****************/
DINGSHIQI();
TIMER_start(hTimer1);

while(cnt <= TIMER_CNT); /* waiting for interrupt*/
MCBSP_close(hMcbsp1);
}

void startMCBSP(void)
{
MCBSP_start(hMcbsp0,MCBSP_RCV_START | //start transmit(XRST)
MCBSP_XMIT_START | //start receive(RRST)
MCBSP_SRGR_START | //start sample rate generator(GRST)
MCBSP_SRGR_FRAMESYNC, //start frame sync.generation(FRST)
MCBSP_SRGR_DEFAULT_DELAY); //MCBSP_SRGR_DEFAULT_DELAY,0x00003000
MCBSP_start(hMcbsp1,MCBSP_RCV_START | //start transmit(XRST)
MCBSP_XMIT_START | //start receive(RRST)
MCBSP_SRGR_START | //start sample rate generator(GRST)
MCBSP_SRGR_FRAMESYNC, //start frame sync.generation(FRST)
MCBSP_SRGR_DEFAULT_DELAY); //MCBSP_SRGR_DEFAULT_DELAY,0x00003000
}

void DINGSHIQI(void)
{

hTimer1 = TIMER_open(TIMER_DEV1,TIMER_OPEN_RESET);//Open TIMER1 device, and reset them to power-on default state.
TimerEventId = TIMER_getEventId(hTimer1); //Obtain the event ID for the timer device.

IRQ_setVecs(vectors); /* point to the IRQ vector table */
IRQ_globalEnable(); /* Globally enable interrupts */
IRQ_nmiEnable(); /* Enable */

IRQ_map(TimerEventId,14);

IRQ_reset(TimerEventId);
IRQ_enable(TimerEventId);
}

/*void RS422_transfer()
{

for (y=0; y<0x00080000; y++)
{

while (!MCBSP_xrdy(hMcbsp1));//等待
MCBSP_write(hMcbsp1,y);


}
}
*/
void TimerEventHandler(void)
{

cnt++;
if (cnt > TIMER_CNT)
{
for (y=0; y<0x00080000; y++)
{

while (!MCBSP_xrdy(hMcbsp1));//等待
MCBSP_write(hMcbsp1,y);


}
}
}

interrupt void
c_int14(void)
{
TimerEventHandler();
return;
}

程序出现的问题是定时器中断一直处于计数状态，但是MCBSP通过422并没有发送数据

之后修改过一次 发现

A:TIMER_START();
  SENDDATA();
  WHILE(1);  定时器工作，MCBSP不出数
B:TIMER_START();
  WHILE(1)
{
  SENDDATA();
}

MCBSP工作，定时器不工作

很不解- -