请教CCS5.4跑5509A串口例程的问题

高手支招啊！

期待高手出现。

谁来给我解答这个问题？

现在又出现新的现象。我运行程序以后，只要一从串口调试助手发送数据，CCS的界面就变成这样：

现在我观察变量，应该是0-9的，可是显示一个点。
如图：

  你的串口是外扩的，还是用McBSP模拟的？你可以跟踪一下你的程序的，比如看数据能否收到，再看数据对不对（数据对不对，一般可能是波特率的问题）。
                                                                         http://processors.wiki.ti.com/index.php/Main_Page
Think Over Before Asking.
http://www.catb.org/~esr/faqs/smart-questions.html#goal

                                                                           http://processors.wiki.ti.com/index.php/Main_Page
Think Over Before Asking.
http://www.catb.org/~esr/faqs/smart-questions.html#goal

是MCBSP模拟的。

#1. 程序能一直正常运行吗？
#2. 接收的话McBSP的rrdy能等到吗？
#3. 是用中断，还是查询？
#4. 是不是两端速度不匹配造成的？
                                                                         http://processors.wiki.ti.com/index.php/Main_Page
Think Over Before Asking.
http://www.catb.org/~esr/faqs/smart-questions.html#goal

这是我CMD文件：
/**********************************************************/
/*                                                        */
/*         LINKER command file for LEAD3 memory map       */
/*                                                        */
/**********************************************************/
 
 
MEMORY
[
    PAGE 0:
        MMR     : origin = 0000000h, length = 00000c0h
        SPRAM   : origin = 00000c0h, length = 0000040h
        VECS    : origin = 0000100h, length = 0000100h
        DARAM0  : origin = 0000200h, length = 0003E00h
        DARAM1  : origin = 0004000h, length = 0004000h
        DARAM2  : origin = 0008000h, length = 0004000h
        DARAM3  : origin = 000c000h, length = 0004000h
        SARAM0  : origin = 0010000h, length = 0004000h
        SARAM1  : origin = 0014000h, length = 0005000h
        SARAM2  : origin = 0019000h, length = 0003000h
        SARAM3  : origin = 001c000h, length = 0004000h
        SARAM4  : origin = 0020000h, length = 0004000h
        SARAM5  : origin = 0024000h, length = 0004000h
        SARAM6  : origin = 0028000h, length = 0004000h
        SARAM7  : origin = 002c000h, length = 0004000h
        SARAM8  : origin = 0030000h, length = 0004000h
        SARAM9  : origin = 0034000h, length = 0004000h
        SARAM10 : origin = 0038000h, length = 0004000h
        SARAM11 : origin = 003c000h, length = 0004000h
        SARAM12 : origin = 0040000h, length = 0004000h
        SARAM13 : origin = 0044000h, length = 0004000h
        SARAM14 : origin = 0048000h, length = 0004000h
        SARAM15 : origin = 004c000h, length = 0004000h
        CE0     : origin = 0050000h, length = 03b0000h
        CE1     : origin = 0400000h, length = 0400000h
        CE2     : origin = 0800000h, length = 0400000h
        CE3     : origin = 0c00000h, length = 03f8000h
        PDROM   : origin = 0ff8000h, length = 07f00h
   /*   VECS    : origin = 0ffff00h, length = 00100h */ /* reset vector */
]      
 
SECTIONS
[
        vectors  : [] > VECS   PAGE 0         /* interrupt vector table */
        .cinit   : [] > SARAM0 PAGE 0
        .text    : [] > SARAM1 PAGE 0
        isrs     : [] > SARAM2 PAGE 0
        .stack   : [] > DARAM0 PAGE 0
        .sysstack: [] > DARAM0 PAGE 0
        .sysmem  : [] > DARAM1 PAGE 0
        .data    : [] > DARAM1 PAGE 0
        .bss     : [] > DARAM1 PAGE 0
        .const   : [] > DARAM1 PAGE 0
        .cio     : [] > DARAM1 PAGE 0
        .csldata:  [] > DARAM0   PAGE 0
 
]
0X002050地址的值是对的。

一直能正常运行，用中断。
现在我把程序改了，只发送。
程序如下：
/*
 * UART.C
 *
 *  Created on: 2014-12-23
 *      Author: Administrator
 */
/*----------------------------------------------------------------------------*/
/* DESCRIPTION:                   */
/*                       */
/* This is an example for EMIF of C5509A             */
/*----------------------------------------------------------------------------*/
/* MODULE NAME... Mcbsp              */
/* FILENAME...... uart.c                 */
/* DATE CREATED.. Mon 02/4/2004                 */
/* COMPONENT.....                  */
/* PREREQUISITS..                  */
/*----------------------------------------------------------------------------*/
/* DESCRIPTION:                  */
/*                       */
/* this example is that the software uart is done by Mcbsp */
/*----------------------------------------------------------------------------*/
#include
#include
#include
#include
#include
#include
//设置McBSP的PCR寄存器指针，用于读写其I/O端口
ioport unsigned int *PCR_1=(unsigned int *)0x2c12;
#define REG_PCR1 (*PCR_1)
/*锁相环的设置*/
PLL_Config  myConfig      = [
  0,    //IAI: the PLL locks using the same process that was underway
                //before the idle mode was entered
  1,    //IOB: If the PLL indicates a break in the phase lock,
                //it switches to its bypass mode and restarts the PLL phase-locking
                //sequence
  12,    //PLL multiply value; multiply 12 times
  0             //Divide by 1 PLL divide value; it can be either PLL divide value
                //(when PLL is enabled), or Bypass-mode divide value
                //(PLL in bypass mode, if PLL multiply value is set to 1)
];

/****************************设置Timer********************************/
/* 参考: TMS320VC5509 DSP Timers Reference Guide
         TMS320C55x Chip Support Library API Reference Guide (Rev. J)
   HX-5509A 开发板使用手册                                     */
//---------Global data definition---------//
#define TIMER_CTRL    TIMER_TCR_RMK(
      TIMER_TCR_IDLEEN_DEFAULT,    /* IDLEEN == 0 */
      TIMER_TCR_FUNC_OF(0),        /* FUNC   == 0 */
      TIMER_TCR_TLB_RESET,         /* TLB    == 1 */
      TIMER_TCR_SOFT_BRKPTNOW,     /* SOFT   == 0 */
      TIMER_TCR_FREE_WITHSOFT,     /* FREE   == 0 */
      TIMER_TCR_PWID_OF(0),        /* PWID   == 0 */
      TIMER_TCR_ARB_RESET,         /* ARB    == 1 */
      TIMER_TCR_TSS_START,         /* TSS    == 0 */
      TIMER_TCR_CP_PULSE,          /* CP     == 0 */
      TIMER_TCR_POLAR_LOW,         /* POLAR  == 0 */
      TIMER_TCR_DATOUT_0           /* DATOUT == 0 */
)

/* Create a TIMER configuration structure that can be passed */
/* to TIMER_config CSL function for initialization of Timer  */
/* control registers.                                        */
//产生1ms中断
TIMER_Config timCfg0 = [
   TIMER_CTRL,               /* TCR0 */
   749,                     /* PRD0 */
   0x0000                   /* PRSC */
];
 
/* Create a TIMER_Handle object for use with TIMER_open */
TIMER_Handle mhTimer0;
 
Uint16 eventId0;
Uint16 timer0_cnt = 0;
int old_intm;
Uint16 tim_val;
 
//---------Function prototypes---------
/* Reference start of interrupt vector table   */
/* This symbol is defined in file, vectors_timer1.s55 */
extern void VECSTART(void);
 
/* Function/ISR prototypes */
interrupt void timer0Isr(void);
/***********************************************************************/

/**************************McBSP1设置成GPIO*****************************/
/* 参考: TMS320C55x DSP Multichannel Buffered Serial Port (McBSP) Reference Guide
         HX-5509A 开发板使用手册
   TMS320C55x Chip Support Library API Reference Guide (Rev. J)  */
MCBSP_Config Mcbsptest;
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_GPIO,                   /* XIOEN    = 1   */
   MCBSP_PCR_RIOEN_GPIO,                   /* RIOEN    = 1   */
   MCBSP_PCR_FSXM_EXTERNAL,                /* FSXM     = 0   */
   MCBSP_PCR_FSRM_EXTERNAL,                /* FSRM     = 0   */
   MCBSP_PCR_CLKXM_INPUT,                  /* CLKXM    = 0   */
   MCBSP_PCR_CLKRM_INPUT,                  /* CLKRM    = 0   */
   MCBSP_PCR_SCLKME_NO,                    /* SCLKME   = 0   */
   MCBSP_PCR_DXSTAT_1,                     /* DXSTAT   = 1   */
   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
];
MCBSP_Handle hMcbsp;
/***********************************************************************/

Uint16 i,temp;
unsigned char timer0_cnten;
unsigned char uart_rec, uart_send, uart_recflag, uart_sendflag;
unsigned char uart_bitscan, uart_bitcnt, uart_recstart, uart_sendbitcnt;
unsigned char uart_bitsend, uart_bitsendcnt, uart_sendcnten, uart_sendend;
void delay(Uint32 k)
[
   while(k--);
]
void settimer(void)
[
 /* Set IVPH/IVPD to start of interrupt vector table */
 /*修改寄存器IVPH，IVPD，重新定义中断向量表*/
 IRQ_setVecs((Uint32)(&VECSTART));
 /* Temporarily disable all maskable interrupts */
    old_intm = IRQ_globalDisable();
 
    /* Open Timer 0, set registers to power on defaults */
    mhTimer0 = TIMER_open(TIMER_DEV0, TIMER_OPEN_RESET);
 
    /* Get Event Id associated with Timer 0, for use with */
    /* CSL interrupt enable functions.                    */
    eventId0 = TIMER_getEventId(mhTimer0);
 
    /* Clear any pending Timer interrupts */
    IRQ_clear(eventId0);
 
    /* Place interrupt service routine address at */
    /* associated vector location */
    IRQ_plug(eventId0,&timer0Isr);
 
    /* Write configuration structure values to Timer control regs */
    TIMER_config(mhTimer0, &timCfg0);
 
    /* Enable Timer interrupt */
    IRQ_enable(eventId0);
 
    /* Enable all maskable interrupts */
    IRQ_globalEnable();
    timer0_cnten = 0;
    uart_bitscan = 0;
    uart_bitcnt = 0;
 uart_recstart = 0;
 uart_recflag = 0;
 uart_sendflag = 0;

    /* Start Timer */
    TIMER_start(mhTimer0);
]

void main(void)
[
    /* Initialize CSL library - This is REQUIRED !!! */
    /*初始化CSL库*/
    CSL_init();
 /*设置系统的运行速度为144MHz*/
    PLL_config(&myConfig);
 /*初始化McBSP1*/
 hMcbsp = MCBSP_open(MCBSP_PORT1,MCBSP_OPEN_RESET);
 /*设置McBSP1*/
 MCBSP_config(hMcbsp,&Mcbsp1Config);
    MCBSP_getConfig(hMcbsp,&Mcbsptest);
 settimer();
 uart_bitsendcnt = 0;
 uart_sendend = 0;
 uart_sendcnten = 0;
 uart_bitsend = 0;
 uart_send = 0X0;
 uart_sendflag = 1;
 uart_sendbitcnt = 0;
/*************************以下程序实现软件Uart************************/
/* 参考：HX-5509A 开发板使用手册                                     */
 while(TRUE)
 [

 ];
]

interrupt void timer0Isr(void)
[
 temp = REG_PCR1;
 //Send
 if(uart_sendflag==1)
 [
  if(uart_sendcnten==0)
  [
   REG_PCR1 &= 0xffdf;
   uart_bitsend = 1;
   uart_sendcnten = 1;
  ]
  if(uart_sendcnten==1)
  [
   uart_bitsendcnt++;
   if(uart_bitsendcnt==10)
   [
    uart_sendbitcnt++;
    if(uart_sendend==1)
    [
     uart_sendflag = 0;
    ]
    else
    [
     if(uart_sendbitcnt<9)
     [
      if((uart_send & uart_bitsend)==0)
      [
       REG_PCR1 &= 0xffdf;
      ]
      else
      [
       REG_PCR1 |= 0x0020;
      ]
      uart_bitsend <<= 1;
     ]
     else
     [
      REG_PCR1 |= 0x0020;
                        uart_sendflag = 0;
     ]
    ]
    uart_bitsendcnt = 0;
   ]
  ]
 ]

]

/******************************************************************************
* End of uart.c
******************************************************************************/
 

 cmd文件也改了，是这样：
/**********************************************************/
/*                                                        */
/*         LINKER command file for LEAD3 memory map       */
/*                                                        */
/**********************************************************/
 
 
MEMORY
[
    PAGE 0:
        MMR     : origin = 0000000h, length = 00000c0h
        SPRAM   : origin = 00000c0h, length = 0000040h
        VECS    : origin = 0000100h, length = 0000100h
        DARAM0  : origin = 0000200h, length = 0003E00h
        DARAM1  : origin = 0004000h, length = 0004000h
        DARAM2  : origin = 0008000h, length = 0004000h
        DARAM3  : origin = 000c000h, length = 0004000h
        SARAM0  : origin = 0010000h, length = 0004000h
        SARAM1  : origin = 0014000h, length = 0005000h
        SARAM2  : origin = 0019000h, length = 0003000h
        SARAM3  : origin = 001c000h, length = 0004000h
        SARAM4  : origin = 0020000h, length = 0004000h
        SARAM5  : origin = 0024000h, length = 0004000h
        SARAM6  : origin = 0028000h, length = 0004000h
        SARAM7  : origin = 002c000h, length = 0004000h
        SARAM8  : origin = 0030000h, length = 0004000h
        SARAM9  : origin = 0034000h, length = 0004000h
        SARAM10 : origin = 0038000h, length = 0004000h
        SARAM11 : origin = 003c000h, length = 0004000h
        SARAM12 : origin = 0040000h, length = 0004000h
        SARAM13 : origin = 0044000h, length = 0004000h
        SARAM14 : origin = 0048000h, length = 0004000h
        SARAM15 : origin = 004c000h, length = 0004000h
        CE0     : origin = 0050000h, length = 03b0000h
        CE1     : origin = 0400000h, length = 0400000h
        CE2     : origin = 0800000h, length = 0400000h
        CE3     : origin = 0c00000h, length = 03f8000h
        PDROM   : origin = 0ff8000h, length = 07f00h
   /*   VECS    : origin = 0ffff00h, length = 00100h */ /* reset vector */
]      
 
SECTIONS
[
        vectors  : [] > VECS   PAGE 0         /* interrupt vector table */
        .cinit   : [] > SARAM0 PAGE 0
        .text    : [] > SARAM1 PAGE 0
        isrs     : [] > SARAM2 PAGE 0
        .stack   : [] > SARAM4 PAGE 0
        .sysstack: [] > SARAM4 PAGE 0
        .sysmem  : [] > SARAM5 PAGE 0
        .data    : [] > SARAM3 PAGE 0
        .bss     : [] > SARAM3 PAGE 0
        .const   : [] > SARAM6 PAGE 0
        .cio     : [] > SARAM6 PAGE 0
        .csldata:  [] > SARAM7   PAGE 0
 
]
CMD文件改的是都在SARAM区。
我uart_send是发送的值，我给这个变量赋0x55,0,1,可以发出数来，但都是0xf8。

这个问题苦恼我很久了，一直解决不了。

问题解决了。以前运行程序都是点下面这个按钮

再点绿色箭头

可是唯独串口工程，点了第一个按钮之后，再load一下，我发现load路径不对，
重新选择路径后，再点绿色按钮就好了。搞不懂为什么那个路径会不对。

看一下上面图标的箭头下有些什么内容。
                                                                         http://processors.wiki.ti.com/index.php/Main_Page
Think Over Before Asking.
http://www.catb.org/~esr/faqs/smart-questions.html#goal

怎么解决的