DS18B20程序
这是一个DS18B20的数码管显示函数，可是显示出来的貌似不对啊，请问这个数值转换对吗？哪里出错了，就是有颜色的字体那部分对不对#include <msp430x14x.h>
#include "BoardConfig.h"
#include "DS18B20.h"
//要显示的6位温度数字
uchar dN;
//数码管七段码；0--f
uchar scandata = {0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,
0x7f,0x6f,0x77,0x7c,0x39,0x5e,0x79,0x71};
//数码管位选变量
uchar cnt = 0;
void Disp_Numb(uint temper);
/****************主函数****************/
void main(void)
{
uchar i;
WDTCTL=WDTPW+WDTHOLD;
/*------选择系统主时钟为8MHz-------*/
BCSCTL1 &= ~XT2OFF; //打开XT2高频晶体振荡器
do
{
IFG1 &= ~OFIFG; //清除晶振失败标志
for (i = 0xFF; i > 0; i--); //等待8MHz晶体起振
}
while ((IFG1 & OFIFG)); //晶振失效标志仍然存在？
BCSCTL2 |= SELM_2 + SELS; //MCLK和SMCLK选择高频晶振
BoardConfig(0x88); //打开数码管
//设置看门狗定时器，初始化控制数码管的IO
WDTCTL = WDT_ADLY_1_9;
IE1 |= WDTIE;
P4DIR = 0xff;
P5DIR = 0xff;
P4OUT = 0x00;
P5OUT = 0xff;
//计数时钟选择SMLK=8MHz，1/8分频后为1MHz
TACTL |= TASSEL_2 + ID_3;
//打开全局中断
_EINT();
//循环读数显示
while(1)
{
Disp_Numb(Do1Convert());
}
}
#pragma vector = WDT_VECTOR
__interrupt void watchdog_timer(void)
{
P5OUT = 0xff;
P4OUT = scandata];
if(cnt==1) P4OUT |= 0x80; //在第二位显示小数点
P5OUT &= ~(1<<cnt);
cnt++;
if(cnt == 6) cnt = 0;
}
void Disp_Numb(uint temp)
{
uchar i;
for(i = 0;i < 6;i++) dN = 0; //初始化显示变量
//数值转换
dN = ((temp * 625/10000))/10;
dN = ((temp * 625/10000))%10;
dN = ((temp * 625/1000))%10;
dN = ((temp * 625/100))%10;
dN = ((temp * 625/10))%10;
dN = ((temp * 625))%10;}
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