msp430 adc電壓值顯示在1602上

ID:371533 · 發(fā)表于 2018-7-14 16:05

#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轉(zhuǎn)換結(jié)果的數(shù)組 // is not used for anything.
void Trans_val(uint Hex_Val);
void keytest();
/************************主函數(shù)****************************/
void main(void)
{
WDTCTL = WDTPW+WDTHOLD; //關(guān)閉看門(mén)狗
LcdReset(); //復(fù)位1602液晶
DispNChar(0,0,5,tishi);
DispNChar(0,1,4,"set:"); //顯示提示信息
Init_Keypad(); //初始化鍵盤(pán)端口
P1DIR|=0X07;
x9c_init();
P6SEL |= 0x01; // 使能ADC通道
ADC12CTL0 = ADC12ON+SHT1_8+MSC; // 打開(kāi)ADC，設(shè)置采樣時(shí)間
ADC12CTL1 = SHP+CONSEQ_2; // 使用采樣定時(shí)器
ADC12IE = 0x01; // 使能ADC中斷
ADC12CTL0 |= ENC; // 使能轉(zhuǎn)換
ADC12CTL0 |= ADC12SC; // 開(kāi)始轉(zhuǎn)換
_EINT();
LPM0;
}
/*******************************************
函數(shù)名稱(chēng)：ADC12ISR
功能：ADC中斷服務(wù)函數(shù)，在這里用多次平均的
計(jì)算P6.0口的模擬電壓數(shù)值
參數(shù)：無(wú)
返回值：無(wú)
********************************************/
#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();
}
/*******************************************
函數(shù)名稱(chēng)：Trans_val
功能：將16進(jìn)制ADC轉(zhuǎn)換數(shù)據(jù)變換成三位10進(jìn)制
真實(shí)的模擬電壓數(shù)據(jù)，并在液晶上顯示
參數(shù)：Hex_Val--16進(jìn)制數(shù)據(jù)
n--變換時(shí)的分母等于2的n次方
返回值：無(wú)
********************************************/
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變換
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位對(duì)應(yīng)符號(hào)"."
//在液晶上顯示變換后的結(jié)果
Disp1Char(5,0,'1');
for(i = 0;i < 4;i++)
Disp1Char((6 + i),0,ptr[i]+48);
}

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msp430 adc電壓值顯示在1602上

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