msp430g2553-LCD1602显示直流电压检测电路

1、msp430g2553_LCD1602显示直流电压检测电路按此图连接即可。以下是显示部分程序，DA部分简单，大家稍微动动脑子/*msp430g2553_LCD1602_Voltage_Detect*date:2012.7.13 */#include <msp430g2553.h>int data;int i,j;double n;char a;/*延时函数*/void delay(int i)int s=500;for(;i>0;i-)for(;s>0;s-);/*lcd写指令*/void write_com(char com)P1OUT&=(1<<

2、3);/RS=0,输入指令P1OUT&=(1<<4);/RW=0，向lcd写入指令或数据P1OUT&=(1<<5);/EN=0，始终执行指令delay(8);P2OUT=com;delay(8);P1OUT|=(1<<5);/EN=1，读取信息delay(8);P1OUT&=(1<<5);/EN=0，执行指令/*lcd写数据*/void write_data(char data_bit)P1OUT|=(1<<3);/RS=1，输入数据P1OUT&=(1<<4);/RW=0，向lcd写入指令或

3、数据P1OUT&=(1<<5);/EN=0，执行指令delay(8);P2OUT=data_bit;delay(8);P1OUT|=(1<<5);/EN=1,读取信息delay(8);P1OUT&=(1<<5);/EN=0，执行指令/*lcd初始化*/void initial_lcd(void)delay(20);write_com(0x38);delay(15);write_com(0x0c);delay(15);write_com(0x06);delay(15);write_com(0x01);/*lcd显示*/void LCD_Disp

4、lay(char x,char y,char *str)char xtemp; switch(x) case 0:xtemp=0x80+y; break; case 1:xtemp=0xc0+y; break; default:break; write_com(xtemp); while(*str!=0) write_data(*str); str+; /*主函数*/void main(void) WDTCTL = WDTPW + WDTHOLD; / Stop WDT P2SEL=0x00;/设置P2为通用IO P2DIR |= 0xff; / Set P2 to output direct

5、ion P1DIR |= 0x38;/0011 1000 p1.3 1.4 1.5 作为LCD使能复位控制端 initial_lcd();/LCD初始化 _enable_interrupt(); / Enable interrupts. TACCR0 = 30; / Delay to allow Ref to settle TACCTL0 |= CCIE; / Comvolre-mode interrupt. TACTL = TASSEL_2 | MC_1; / TACLK = SMCLK, Up mode. LPM0; / Wait for delay. TACCTL0 &= CCI

6、E; / Disable timer Interrupt _disable_interrupt(); for (;) n =12345678;a0=(long)n/100000000%10+0x30);a1=0x2e;a2=(long)n/10000000%10+0x30);a3=(long)n/1000000%10+0x30);a4=(long)n/100000%10+0x30);a5=(long)n/10000%10+0x30);a6=(long)n/1000%10+0x30);a7=(long)n/100%10+0x30);a8=(long)n/10%10+0x30);a9=(long)n/1%10+0x30);a10='0' for(j = 0;j <= 618;j+) /扫描延时，稳定显示 / LCD_Display(0,0,"Voltage=");/ LCD_Display(0,15,"V"); LCD_Display(0,0,a); LCD_Display(1,1,"No:22 copyright"); / ADC10 interrupt service routine