微弱信号处理装置的软件部分：ad转换和lcd显示（液晶型号12864）

2018-6-27 03:35:42 2253 AD转换 LCD显示 12864

#include
#define CPU_F ((double)8000000)
#define delay_us(x) __delay_cycles((long)(CPU_F*(double)x/1000000.0))
#define delay_ms(x) __delay_cycles((long)(CPU_F*(double)x/1000.0))

#define uchar unsigned char
#define uint  unsigned int
#define ulong unsigned long

/*12864应用指令*/
#define CLEAR_SCREEN       0x01       //清屏指令：清屏且AC值为00H
#define AC_INIT       0x02    //将AC设置为00H。且游标移到原点位置
#define CURSE_ADD    0x06    //设定游标移到方向及图像整体移动方向（默认游标右移，图像整体不动）
#define FUN_MODE       0x30             //工作模式：8位基本指令集
#define DISPLAY_ON    0x0c    //显示开,显示游标，且游标位置反白
#define DISPLAY_OFF    0x08                   //显示关
#define CURSE_DIR    0x14                //游标向右移动:AC=AC+1
#define SET_CG_AC       0x40             //设置AC，范围为：00H~3FH
#define SET_DD_AC       0x80

#define RS_CLR       P2OUT &= ~BIT7    //RS置低
#define RS_SET       P2OUT |= BIT7       //RS置高

#define RW_CLR       P2OUT &= ~BIT6    //RW置低
#define RW_SET       P2OUT |= BIT6       //RW置高

#define EN_CLR       P2OUT &= ~BIT5       //E置低
#define EN_SET       P2OUT |= BIT5       //E置高
#define DataPort    P3OUT                //P3口为数据口
#define Num_of_Results 8

unsigned char tab[]={'0','1','2','3','4','5','6','7','8','9','.','v'};
//float inx;
volatile unsigned int results[Num_of_Results];

   //*************************************************************************
   //                   系统时钟初始化
   //*************************************************************************
   void Clock_Init()
   {
      UCSCTL1 = DCORSEL_2;                         //  设置DCO范围
      UCSCTL3 |= SELREF_2;                //  选择FLL参考源自REFO
      UCSCTL4 = SELM_3 + SELA_2 + SELS_4;             //  配置 MCLK = DCOC,SMCLK =DCODIV,ACLK=REFO
      while (SFRIFG1 & OFIFG)    //  清除 OFIFG,and  XT1OFFG ,DCOFFG
      {
         UCSCTL7 &= ~(  XT1LFOFFG + DCOFFG);
         SFRIFG1 &= ~OFIFG;
      }
   }

   //*************************************************************************
   //             MSP430内部看门狗初始化
   //*************************************************************************
   void WDT_Init()
   {
      WDTCTL = WDTPW + WDTHOLD;    //关闭看门狗
   }

   //*************************************************************************
   //                      初始化IO口子程序
   //*************************************************************************
   void Port_init()
   {

            P3SEL = 0x00;
            P3DIR = 0xFF;
            P2SEL = 0x00;
            P2DIR|= BIT5 + BIT6 + BIT7;
   }

   //***********************************************************************
   //       显示屏命令写入函数
   //***********************************************************************

   void LCD_write_com(unsigned char com)
   {
            RS_CLR;
            RW_CLR;
            EN_SET;
            DataPort = com;
            delay_ms(5);
            EN_CLR;
   }
   //***********************************************************************
   //       显示屏数据写入函数
   //***********************************************************************

   void LCD_write_data(unsigned char data)
   {
            RS_SET;
            RW_CLR;
            EN_CLR;
            DataPort = data;
            EN_SET;
         // delay_ms(5);
            EN_CLR;
   }
   //***********************************************************************
   //       显示屏清空显示
   //***********************************************************************

   void LCD_clear(void)
   {
            LCD_write_com(0x01);
            //delay_ms(5);
   }

   //***********************************************************************
   //函数名称：DisplayCgrom(uchar hz)显示CGROM里的汉字
   //***********************************************************************
   void DisplayCgrom(uchar addr,int b)
   {
                  int i;
                  int a[7];
                  a[0]=b/10000;
                  a[1]=10;
                  a[2]=(b/1000)%10;
                  a[3]=(b/100)%10;
                  a[4]=(b/10)%10;
                  a[5]=(b/1)%10;
                  a[6]=11;
                  LCD_write_com(addr);
               delay_ms(5);
                  for(i=0;i<=6;i++)
                  {
                           LCD_write_data(tab[a]);
                     // delay_ms(5);
                  }

   }
   //****************************************************************
   //函数名称：Display()显示测试结果
   //****************************************************************

   //***********************************************************************
   //       显示屏初始化函数
   //***********************************************************************

   void LCD_init(void)
   {
            LCD_write_com(FUN_MODE);                //显示模式设置
            delay_ms(5);
            LCD_write_com(FUN_MODE);                //显示模式设置
            delay_ms(5);
            LCD_write_com(DISPLAY_ON);                //显示开
            delay_ms(5);
            LCD_write_com(CLEAR_SCREEN);                   //清屏
            delay_ms(5);
   }

int main(void)
{
      WDT_Init();//看门狗设置
      P6SEL |= 0x01;                         // Enable A/D channel A0
      ADC12CTL0 = ADC12ON+ADC12SHT0_8+ADC12MSC; // Turn on ADC12, set sampling time
                                                                              // set multiple sample conversion
      ADC12CTL1 = ADC12SHP+ADC12CONSEQ_2;  // Use sampling timer, set mode
      ADC12IE = 0x01;                         // Enable ADC12IFG.0
      ADC12CTL0 |= ADC12ENC;                   // Enable conversions
      ADC12CTL0 |= ADC12SC;                   // Start conversion

         __bis_SR_register(LPM4_bits + GIE);       // Enter LPM4, Enable interrupts
         __no_operation();                      // For debugger

}

#pragma vector=ADC12_VECTOR
__interrupt void ADC12ISR (void)
{
static unsigned char index = 0;
unsigned char i,j;
int a[8];
int t,ave=0;
int voltage;
switch(__even_in_range(ADC12IV,34))
{
case  0: break;                      // Vector  0:  No interrupt
case  2: break;                      // Vector  2:  ADC overflow
case  4: break;                   // Vector  4:  ADC timing overflow
case  6:                               // Vector  6:  ADC12IFG0
   results[index] = ADC12MEM0;          // Move results
   index++;                      // Increment results index, modulo; Set Breakpoint1 here

   if (index == 8)
   {
   for(i=0;i       {for(j=i+1;j             {
                        if(a>a[j])
                        {
                                 t=a;
                                 a=a[j];
                                 a[j]=t;
                        }
            }
            }

   for(i=0;i    {
            ave=ave+results;
   }
   ave=ave/4;
   voltage=(ave)*33000/4095;
   Clock_Init();                               //系统时钟设置
   Port_init();                      //系统初始化，设置IO口属性
   delay_ms(100);                               //延时100ms
   LCD_init();                            //液晶参数初始化设置
   LCD_clear();
   DisplayCgrom(0x80,voltage);                      //显示汉字
   index = 0;
   }
case  8: break;                         // Vector  8:  ADC12IFG1
case 10: break;                         // Vector 10:  ADC12IFG2
case 12: break;                         // Vector 12:  ADC12IFG3
case 14: break;                         // Vector 14:  ADC12IFG4
case 16: break;                         // Vector 16:  ADC12IFG5
case 18: break;                         // Vector 18:  ADC12IFG6
case 20: break;                         // Vector 20:  ADC12IFG7
case 22: break;                         // Vector 22:  ADC12IFG8
case 24: break;                         // Vector 24:  ADC12IFG9
case 26: break;                         // Vector 26:  ADC12IFG10
case 28: break;                         // Vector 28:  ADC12IFG11
case 30: break;                         // Vector 30:  ADC12IFG12
case 32: break;                         // Vector 32:  ADC12IFG13
case 34: break;                         // Vector 34:  ADC12IFG14
default: break;
}
}