[讨论] 我想用串口显示G2553的片上温度的值，但是下面的程序不成功

易爆炸弹 2015-8-18 10:12 楼主

应该是第三个while(1)循环的部分不对，请问一下应该怎么写呢？

#include
#include
#include
#include  "msp430g2553.h"
/*
* ======== Grace related declaration ========
*/
extern void CSL_init(void);
char mystring[50] = "300 my test program!\r\n";
void ADC10_init(void);

void myputs(char * string);
/*
*  ======== delay ========
*/
void delay(unsigned int time_delay)
{
unsigned int i,j,k,a;
for(i = 0; i < time_delay; i++)
{
         for(j = 0; j < 20; j++)
                  {
                        for(k = 0; k < 20; k++)
                                 {
                                          for(a = 0; a < 20; a++)
                                                __delay_cycles(8);
                                 }
                  }
}
}

/*
*  ======== main ========
*/
int main(void)
{
      int result;
      int temp;
      int IntDeg;

      CSL_init();
      ADC10_init();
      while(1)
      {
myputs(mystring);

myputs("msp430 startup!erererer\r\n");
delay(10);
      }

__bis_SR_register(LPM0_bits + GIE);    // Enter LPM0, interrupts enabled

while(1)
      {
      ADC10CTL0 |= ENC + ADC10SC;          // Sampling and conversion start
   //    _bis_SR_register(CPUOFF + GIE);             // LPM0 with interrupts enabled
      __delay_cycles(1000);
      //-----ADC转换完成中断唤醒CPU后才执行以下代码-----
      temp = ADC10MEM;                                                       //读取AD采样值
      IntDeg= temp*4225/1024 - 2777;             //转换为摄氏度，并10倍处理
      }
while(1)
{
         ADC10CTL0 |= ENC+ADC10SC;
         while((ADC10CTL0&ADC10IFG)==0);
         //result = ADC10MEM;
         IntDeg=(unsigned int)((result-746)/(0.24069)+286);//P64 in the book

         mystring[0] = (IntDeg/1000) + '0';
         mystring[1] = ((IntDeg%1000)/100) + '0';
         mystring[2] = ((IntDeg%100)/10) +'0';
         mystring[3] = (IntDeg%10) + '0';

         myputs(mystring);
         delay(50);

}

}

/*
*  ======== string output ========
*/
void myputs(char * string)
{
      unsigned char num;

      for( num = 0; num < strlen(string); num++ )
            {
                     while (!(IFG2&UCA0TXIFG));             // USCI_A0 TX buffer ready?
                     UCA0TXBUF = string[num];                   // TX -> RXed character
            }
}

void USCI0RX_ISR(void)
{
while (!(IFG2&UCA0TXIFG));             // USCI_A0 TX buffer ready?
UCA0TXBUF = UCA0RXBUF;                   // TX -> RXed character
}

void ADC10_init(void)
{
      ADC10CTL0 &= ~ENC;
      ADC10CTL0 = ADC10IE + ADC10ON + REFON + ADC10SHT_3 + SREF_1;
ADC10CTL1 = CONSEQ_0 + ADC10SSEL_0 + ADC10DIV_3 + SHS_0 + INCH_10;
   __delay_cycles(30000);
ADC10CTL0 |= ENC;
}
/******************************************************************************************************
* 名    称：ADC10_ISR_HOOK
* 功    能：ADC转换完成后唤醒CPU
* 入口参数：无
* 出口参数：无
* 说    明：直接从CCS的Example中移植过来
* 范    例：无
******************************************************************************************************/
#pragma vector=ADC10_VECTOR
__interrupt void ADC10_ISR_HOOK(void)
{
      _bic_SR_register_on_exit(LPM4_bits);
}