msp430 adc电压值显示在1602上 -

#include <msp430x14x.h>
#include "Keypad.h"
#include "cry1602.h"
#include "x9c103.h"
#define uchar unsigned char
#define uint unsigned int
#define Num_of_Results 128
extern uchar num[];
uchar tishi[] = {"Vout:"};
static uint results[Num_of_Results]; //保存ADC转换结果的数组 // is not used for anything.
void Trans_val(uint Hex_Val);
void keytest();
/************************主函数****************************/
void main(void)
{
WDTCTL = WDTPW+WDTHOLD; //关闭看门狗
LcdReset(); //复位1602液晶
DispNChar(0,0,5,tishi);
DispNChar(0,1,4,"set:"); //显示提示信息
Init_Keypad(); //初始化键盘端口
P1DIR|=0X07;
x9c_init();
P6SEL |= 0x01; // 使能ADC通道
ADC12CTL0 = ADC12ON+SHT1_8+MSC; // 打开ADC，设置采样时间
ADC12CTL1 = SHP+CONSEQ_2; // 使用采样定时器
ADC12IE = 0x01; // 使能ADC中断
ADC12CTL0 |= ENC; // 使能转换
ADC12CTL0 |= ADC12SC; // 开始转换
_EINT();
LPM0;
}
/*******************************************
函数名称：ADC12ISR
功能：ADC中断服务函数，在这里用多次平均的
计算P6.0口的模拟电压数值
参数：无
返回值：无
********************************************/
#pragma vector=ADC12_VECTOR
__interrupt void ADC12ISR (void)
{
static uint index = 0;
results[index++] = ADC12MEM0; // Move results
if(index == Num_of_Results)
{
uchar i;
unsigned long sum = 0;
index = 0;
for(i = 0; i < Num_of_Results; i++)
{
sum += results[i];
}
sum >>= 7; //除以512
Trans_val(sum);
}
keytest();
}
/*******************************************
函数名称：Trans_val
功能：将16进制ADC转换数据变换成三位10进制
真实的模拟电压数据，并在液晶上显示
参数：Hex_Val--16进制数据
n--变换时的分母等于2的n次方
返回值：无
********************************************/
void Trans_val(uint Hex_Val)
{
unsigned long caltmp;
uint Curr_Volt;
uchar t1,i;
uchar ptr[4];
caltmp = Hex_Val;
caltmp = (caltmp << 5) + Hex_Val; //caltmp = Hex_Val * 33
caltmp = (caltmp << 3) + (caltmp << 1); //caltmp = caltmp * 10
caltmp = (caltmp << 1) + caltmp;
Curr_Volt = caltmp >> 11; //Curr_Volt = caltmp / 2^n
Curr_Volt+=60;
ptr[0] = (Curr_Volt-(Curr_Volt/1000)*1000) / 100; //Hex->Dec变换
t1 = Curr_Volt -(Curr_Volt/1000)*1000- (ptr[0] * 100);
ptr[2] = t1 / 10;
ptr[3] = t1 - (ptr[2] * 10);
ptr[1] = -2; //shuzi表中第10位对应符号"."
//在液晶上显示变换后的结果
Disp1Char(5,0,'1');
for(i = 0;i < 4;i++)
Disp1Char((6 + i),0,ptr[i]+48);
}

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