#include "MSP430x22x4.h"
#define uchar unsigned char
#define uint unsigned int
#define comm 0
#define dat 1
#define sclk_1 P4OUT|=0x01 //sclk=1; 001----p4.0
#define sclk_0 P4OUT&=0x06 //sclk=0; 110----p4.1
#define std_1 P4OUT|=0x02 //std =1; 010
#define std_0 P4OUT&=0x05 //std =0; 101 /***********数组及变量定义***************************/ uchar xian[]={
"****************"
" M= g "
"此物体重量为: "
"****************"
}; uchar caidan1[]={"0123456789 "};
float ad_value,data;
uchar ai=0; /*************************延时函数********************************/ void delay(uchar aj)
{
while(aj--);
} void DELAY(uchar aj)
{
for(uchar ak=0;ak<500;)
while(aj--);
}
/*
********************************************************************************
*模块名称:wr_LCD定义
*完成日期:08-07-29
*修改内容:none
********************************************************************************
*///********写命令/数据***************************************************
void wr_lcd (unsigned char dat_comm,unsigned char content)
{
unsigned char a,b,i,j;
delay (50);
a=content;
//cs_1; //P4OUT|=0x04 //cs =1; 0100
sclk_0; //P4OUT&=0x06 //sclk=0; 0110
std_0; //P4OUT&=0x05 //std =0; 0101
std_1; //P4OUT|=0x02 //std =1; 0010
for(i=0;i<5;i++) //
{ sclk_1;sclk_0;}
std_0;
sclk_1;
sclk_0;
if(dat_comm)std_1; else
std_0;
sclk_1;
sclk_0;
std_0;
sclk_1;
sclk_0;
for(j=0;j<2;j++)
{
for(i=0;i<4;i++)
{b=a;
if((b&=0x80)==0)
{std_0;a=a<<1;}
else
{std_1;a=a<<1;}
sclk_1;sclk_0;
}
std_0;
for(i=0;i<4;i++)
{ sclk_1;sclk_0;}
}
}
/*********************************************************************************
*模块名称:初始化定义
*完成日期:08-7-29
*修改内容:none
********************************************************************************
*/
void init_lcd (void)
{
wr_lcd (comm,0x30); /*30---基本指令动作*/
wr_lcd (comm,0x01); /*清屏,地址指针指向00H*/
delay (100);
wr_lcd (comm,0x06); /*光标的移动方向*/
wr_lcd (comm,0x0c); /*开显示,关游标*/
} /*
********************************************************************************
*模块名称:清DDRAM定义
*完成日期:08-7-29
*修改内容:none
********************************************************************************
*/
void clrram (void)
{
wr_lcd (comm,0x30);
wr_lcd (comm,0x01);
delay (180);
} /*
********************************************************************************
*模块名称:显示汉字或字符定义
*完成日期:08-7-29
*修改内容:none
********************************************************************************
*/
void chn_disp(unsigned char *chn)
{
unsigned char i;
wr_lcd (comm,0x30);
wr_lcd (comm,0x80);
for (i=0;i<64;i++)
wr_lcd (dat,chn[i]);
} //****************lcd_mesg定点显示***********************************
void lcd_mesg(uint gao,uchar p,uchar q)
{
uint adder1,adder2,adder3,adder4;
adder1=gao/1000,gao=gao-adder1*1000;
adder2=gao/100,gao=gao-adder2*100;
adder3=gao/10,adder4=gao%10;
wr_lcd(comm,p);
wr_lcd(dat,caidan1[adder1]);delay(20);
wr_lcd(dat,caidan1[adder2]);delay(20);
wr_lcd(comm,q);
wr_lcd(dat,caidan1[adder3]);delay(20);
wr_lcd(dat,caidan1[adder4]);delay(20);
} /**************初始化函数*************************************/
void init_port(void)
{
P3DIR=0XBF; //P3.6---A6, 1011 1111
P3SEL=0XBF;
P3OUT=0X00;
P4DIR=0XFF;
P4SEL=0X00;
P4OUT=0;
ADC10CTL0=0;
ADC10CTL0 |=REFON+SREF_0; //正参考AVCC,AVSS地为负参考
ADC10CTL0 |=ADC10ON+ADC10SHT_3+ADC10IE; //打开ADC10内核,设定采样保持时间为64个ADC10CLK,使能ADC10中断
ADC10CTL1=0;
ADC10CTL1|=INCH_6+CONSEQ_0+SHS_0; //选择第6通道,转换模式为单通道单次模式 采样信号源为ADC10SC
ADC10CTL1|=ADC10SSEL_0+ADC10DIV_3; //转换内核时钟源为ADC10OSC 分频系数4分频
delay(20); //等待参考稳定
ADC10CTL0 |=ENC+ADC10SC; //启动AD转换
_EINT();
return;
}
/*******************主函数*****************************************/
void main(void)
{
WDTCTL=WDTPW+WDTHOLD; //关看门狗
BCSCTL1 =CALBC1_1MHz; //设定DCO为1MHZ
DCOCTL =CALBC1_1MHZ;
init_port();
init_lcd();
chn_disp(xian);
while(1)
{
ADC10CTL0 &= ~ENC; //关闭AD转换
ADC10CTL0 |= ENC + ADC10SC; //启动AD转换
lcd_mesg(data,0x8b,0x8c);
delay(20);
}
}
#pragma vector = ADC10_VECTOR //ADC10 中断服务
__interrupt void adc_isr(void)
{
ADC10CTL0 &= ~ENC; //关闭AD转换
ad_value=ADC10MEM; //保存AD 结果 ADC10MEM=1023*(Vin/VR+) data=((ad_value-390)*10-150);
ADC10CTL0 |= ENC + ADC10SC; //启动AD转换
}