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	 > 嵌入式系統(tǒng) > 設(shè)計(jì)應(yīng)用 > MSP430單片機(jī)AD轉(zhuǎn)換LCD1602&TUBE顯示
          
    
          

          

          


	
	
	

          
	
          
		
          
			
          MSP430單片機(jī)AD轉(zhuǎn)換LCD1602&TUBE顯示
          
						
          
				作者：
				時(shí)間：2016-11-23
				來(lái)源：網(wǎng)絡(luò)
				
				
				
				
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			#include<msp430x14x.h>
          #define uint unsigned int
          #define uchar unsigned char
          #define ulint unsigned long int
          #define RS BIT0;
          #define RW BIT1;
          #define EN BIT2;
          uint Volt0; //設(shè)置電壓變量
          ulint Volttem0;
          unsigned data0=0,data1=0;
          uint ADresult0; //設(shè)置A／Ｄ轉(zhuǎn)換結(jié)果
          uint a[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};//數(shù)碼管不帶小數(shù)點(diǎn)譯碼
          uint b[10]={0x40,0x79,0x24,0x30,0x19,0x12,0x02,0x78,0x00,0x10};//數(shù)碼管帶小數(shù)點(diǎn)譯碼
          uchar c[]={"voltage:"};
          uchar *fu="V",*dian=".";
          uchar num[]={"0123456789"}; //電壓值尋址
          int value[4]={0,0,0,0}; //存放電壓 (v/1000)
          int counter=0; //計(jì)數(shù)分時(shí)顯示
          void lcd_init(); //初始化LCD
          void lcd_wcmd(uchar cmd); //寫(xiě)LCD指令
          void lcd_wdata(uchar data); //寫(xiě)LCD數(shù)據(jù)
          void lcd_pos(uchar pos); //設(shè)置LCD顯示位置
          void LED_SH();
          void LCD_SH();
          void Adcvolt(void) //進(jìn)行電壓轉(zhuǎn)換時(shí)ADC12的初始化
          {
           ADC12CTL0 &=~ENC; //ENC為低電平，設(shè)置AD控制寄存器
           ADC12CTL0 |=ADC12ON+MSC; //打開(kāi)ADC12，可以進(jìn)行AD轉(zhuǎn)換，參考電壓3.3V
           ADC12CTL1=CSTARTADD_0+CONSEQ_1+SHP;//單通道單次轉(zhuǎn)換，采樣頻率源自采樣定時(shí)器
           ADC12MCTL0=EOS+INCH_0; //選擇模擬輸入通道1
           ADC12IE |=BIT0; //AD轉(zhuǎn)換中斷允許
           ADC12CTL0 |=ENC; //轉(zhuǎn)換允許
           ADC12CTL0 |=ADC12SC; //開(kāi)始AD轉(zhuǎn)換
          }
          void Delay(uint n) //延時(shí)函數(shù)
          {
           uint i,j;
           for(i=n;i>0;i--)
           for(j=100;j>0;j--) ;
          }
          void lcd_init() //初始化LCD
          {
           lcd_wcmd(0x38);//16*2顯示、5*7顯示、8位數(shù)據(jù)顯示
           Delay(1);
           lcd_wcmd(0x0c);//顯示開(kāi)，關(guān)光標(biāo)
           Delay(1);
           lcd_wcmd(0x06);//移動(dòng)光標(biāo)
           Delay(1);
           lcd_wcmd(0x01);//清除LCD現(xiàn)實(shí)的內(nèi)容
           Delay(1);
          }
          void lcd_wcmd(uchar cmd) //LCD寫(xiě)指令
          {
           P3OUT &=~RS;
           P3OUT &=~RW;
           P3OUT &=~EN;
           P4OUT=cmd;
           P3OUT |=EN;
           Delay(1);
           P3OUT &=~EN;
          }
          void lcd_pos(uchar pos) //設(shè)置顯示位置
          {
           lcd_wcmd(pos | 0x80);
          }
          void lcd_wdata(uchar data)//寫(xiě)入數(shù)據(jù)到LCD
          {
           P3OUT |=RS;
           P3OUT &=~RW;
           P3OUT &=~EN;
           P4OUT = data;
           P3OUT |=EN;
           P3OUT &=~EN;
          }
          void LED_SH() //LED_show
          {
           P2OUT |=BIT1+BIT3+BIT4;
           P4OUT=0xff;
           P5OUT=0x01; //選擇第一位數(shù)碼管
           P4OUT=b[value[0]]; //P4口顯示采樣值的個(gè)位
           Delay(3);
           P4OUT=0xff;
           P5OUT=0x02; //選擇第二位數(shù)碼管
           P4OUT=a[value[1]];//P4口顯示采樣值的第一位小數(shù)
           Delay(3);
           P4OUT=0xff;
           P5OUT=0x04; //選擇第三位數(shù)碼管
           P4OUT=a[value[2]];//P4顯示采樣值的第二位小數(shù)
           Delay(3);
           P4OUT=0xff;
           P5OUT=0x08; //選擇第四位數(shù)碼管
           P4OUT=a[value[3]];//P4顯示采樣值的第三位小數(shù)
           Delay(3);
           P4OUT=0xff;
          }
          void LCD_SH() //LCD_show
          {
           uint i;
           P2OUT &=~(BIT1+BIT3+BIT4);//turn off 74HC573
           lcd_init(); //初始化LCD，以下為L(zhǎng)CD顯示部分
           Delay(1);
           lcd_wcmd(0x06); //光標(biāo)右移
           lcd_pos(0); //設(shè)置顯示位置為第一行的第一個(gè)字符
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