msp430 spi

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pengchunhua123| 实习生

楼主 | 2013-11-14 20:20 | 只看该作者回帖奖励

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MSP430, spi, se, TI, ST

为什么我的这个程序实现不了数码管显示啊。。各位大侠帮帮忙啊。。本人菜鸟一枚啊，程序附上：
#include <MSP430x24x.h>
#define uchar unsigned char
#define uint unsigned int
#define LCK_SET P1OUT|=1
#define LCK_CLR P1OUT&=~1

uchar const table[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,  //共阴数码管段选码表，无小数点
                           0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
unsigned int Data;
volatile unsigned int i;
void delayms(uint t)
{
uint i;
while(t--)
   for(i=1330;i>0;i--);//进过参数的调整
}
void SendSpi(uchar Dat)
{
UCA0TXBUF = Dat;
while (!(IFG2 & UCA0TXIFG));
// return(UCA0TXBUF);
}

void main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                // Stop watchdog timer
  P3SEL |= 0x11;                         // P3.0,4 USCI_A0 option select
  UCA0CTL0 |= UCCKPH + UCMSB + UCMST + UCSYNC;  // 3-pin, 8-bit SPI master
  UCA0CTL1 |= UCSSEL_2;                   // SMCLK
  UCA0BR0 |= 0x02;
  UCA0BR1 = 0;
  UCA0MCTL = 0;
  UCA0CTL1 &= ~UCSWRST;                   // **Initialize USCI state machine**
  P1DIR=0x01;
  P1SEL=0;
  Data = 0x0FF;                            // Load inital data

  while(1);
  {
Data++;                               // Increment Data value - Set BREAKPOINT here
SendSpi(table[Data%16]);
LCK_CLR;
LCK_SET;
delayms(100);       // Delay
  }
}

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