单步调试读数正确，直接运行读数错误是怎么回事。。。求大神指教

只看该作者 · 2015-4-14 15:13

本人现在在用MSP430F149单片机，控制PS021。通过SPI口对PS021进行配置的时候发现，单步调试配置正确，PS021工作正常，要是直接运行就不工作，求大神指教，已经困扰我两个星期了！！！下面是我的程序。
void ClkInit(void)
{
char i;
BCSCTL1 &= ~XT2OFF;          //打开XT2振荡器
IFG1&=~OFIFG;                //清除振荡错误标志
while((IFG1&OFIFG)!=0)
{
      for(i=0;i<0xff;i++);
      IFG1&=~OFIFG;             //清除振荡错误标志
}
BCSCTL2 |= SELM_2+SELS+DIVS_0;  //MCLK为8MHz，SMCLK为8MHz
}
void SPI_INIT(void)
{

  long int brclk;
  brclk=8000000;                            //
  P5SEL |= 0x0E;                         // P5.1,2,3 SPI option select
  P4SEL &=~0x03;
  P4DIR |=0x03;

  U1CTL |=SWRST;
  U1CTL = CHAR + SYNC + MM ;       // 8-bit, SPI, Master
U1TCTL &=~ (SSEL0+SSEL1);
U1TCTL &=~ CKPL;
U1TCTL &= ~CKPH;
  U1TCTL = SSEL1 + STC ;             // Polarity, SMCLK=8000000, 3-wire
  int fen=brclk/115200;


  U1BR0 = 0x45;                         //波特率设置
  U1BR1 = 0x00;
  U1MCTL = 0x00;
  ME2 |= USPIE1;                         // Module enable
  U1CTL &= ~SWRST;                         // SPI enable
  IE2 |= URXIE1 + UTXIE1;                // RX and TX interrupt enable



}
void SPI_Write_PS021_Register(uchar *p)
{
  int i=0;
  P4OUT|=BIT0;

  P4OUT&=~BIT0;

  asm("NOP");

  for( i=0;i<4;i++)
{
   //SpiWriteDat(*p);
   TXBUF1=*p;
   p++;
   while (!(IFG2 & UTXIFG1));
   IFG2 &= ~UTXIFG1;
}

  P4OUT|=BIT0;
}
void SPI_Write_PS021_Opcode(uchar Opcode)
{

  P4OUT|=BIT0;
  P4OUT&=~BIT0;

  asm("NOP");
  asm("NOP");

  //SpiWriteDat(Opcode);
  TXBUF1=Opcode;
while ((IFG2 & UTXIFG1)==0);
  IFG2 &= ~UTXIFG1;

P4OUT|=BIT0;
}
void initPS021(void)
{
//SPI_Write_SCA103T_Opcode(0x00);

SPI_Write_PS021_Opcode(0x50);                //上电复位

SPI_Write_PS021_Register(PS021_Register0);

SPI_Write_PS021_Register(PS021_Register1);
SPI_Write_PS021_Register(PS021_Register2);
SPI_Write_PS021_Register(PS021_Register3);
SPI_Write_PS021_Register(PS021_Register4);
SPI_Write_PS021_Register(PS021_Register5);
SPI_Write_PS021_Register(PS021_Register6);
SPI_Write_PS021_Register(PS021_Register7);
SPI_Write_PS021_Register(PS021_Register8);
SPI_Write_PS021_Register(PS021_Register9);
SPI_Write_PS021_Register(PS021_Register10);
SPI_Write_PS021_Register(PS021_Register11);
SPI_Write_PS021_Register(PS021_Register12);
SPI_Write_PS021_Register(PS021_Register13);
SPI_Write_PS021_Register(PS021_Register14);
SPI_Write_PS021_Register(PS021_Register15);
SPI_Write_PS021_Opcode(0xC0);                            //初始化系统，不改变寄存器的值
for(int i=0;i<9;i++)
   {
   SPI_Write_PS021_Opcode(0x01);                         //发送九次测量命令，消除零漂
   Delay(20000);
   }
}