msp430g2553内部AD采集正弦波幅值的程序

#include"msp430g2553.h"

#defineuintunsignedint

#defineucharunsignedchar

#defineulongunsignedlong

uintaver[64]={0};

ucharflag=0;

ucharzifu[14]={"0123456789ux=z"};

uintmaxaver=0;

longdis=0;

doublemax=0,maxr=0;

#defineSIDBIT3

#defineSCLKBIT2

#defineLCDPORTP1OUT

#defineSID_1LCDPORT|=SID

#defineSID_0LCDPORT&=~SID

#defineSCLK_1LCDPORT|=SCLK

#defineSCLK_0LCDPORT&=~SCLK

voiddelay(unsignedcharms)

{

unsignedchari,j;

for(i=ms;i>0;i--)

for(j=120;j>0;j--);

}

/***********************************************************

*名称：LCD_Write_cmd()

*功能：写一个命令到LCD12864

*入口参数：cmd:待写入的命令，无符号字节形式

*出口参数：无

*说明：写入命令时，RW=0，RS=0扩展成24位串行发送

*格式：11111RW0RS0xxxx0000xxxx0000

*|最高的字节|命令的bit7~4|命令的bit3~0|

***********************************************************/

voidwrite_cmd(ucharcmd)

{

uchari;

uchari_data;

i_data=0xf8;

SCLK_0;

for(i=0;i<8;i++)

{

SID_0;

if(i_data&0x80)

SID_1;

_delay_cycles(100);

SCLK_0;

SCLK_1;

_delay_cycles(10);

i_data<<=1;

}

i_data=cmd;

i_data&=0xf0;

for(i=0;i<8;i++)

{

SID_0;

if(i_data&0x80)

SID_1;

_delay_cycles(100);

SCLK_0;

SCLK_1;

_delay_cycles(10);

i_data<<=1;

}

i_data=cmd;

i_data<<=4;

for(i=0;i<8;i++)

{

SID_0;

if(i_data&0x80)

SID_1;

_delay_cycles(100);

SCLK_0;

SCLK_1;

_delay_cycles(10);

i_data<<=1;

}

_delay_cycles(100);

}

/***********************************************************

*名称：LCD_Write_Byte()

*功能：向LCD12864写入一个字节数据

*入口参数：byte:待写入的字符，无符号形式

*出口参数：无

*范例：LCD_Write_Byte('F')//写入字符'F'

***********************************************************/

voidwrite_dat(uchardat)

{

uchari;

uchari_data;

i_data=0xfa;

SCLK_0;

for(i=0;i<8;i++)

{

SID_0;

if(i_data&0x80)

SID_1;

_delay_cycles(100);

SCLK_0;

SCLK_1;

_delay_cycles(10);

i_data<<=1;

}

i_data=dat;

i_data&=0xf0;

for(i=0;i<8;i++)

{

SID_0;

if(i_data&0x80)

SID_1;

i_data<<=1;

_delay_cycles(100);

SCLK_0;

SCLK_1;

_delay_cycles(10);

}

i_data=dat;

i_data<<=4;

for(i=0;i<8;i++)

{

SID_0;

if(i_data&0x80)

SID_1;

i_data<<=1;

_delay_cycles(100);

SCLK_0;

SCLK_1;

_delay_cycles(10);

}

_delay_cycles(100);

}

/***********************************************************

*名称：LCD_pos()

*功能：设置液晶的显示位置

*入口参数：x:第几行，1~4对应第1行~第4行

*y:第几列，0~15对应第1列~第16列

*出口参数：无

*范例：LCD_pos(2,3)//第二行，第四列

***********************************************************/

voidlcd_pos(ucharx,uchary)

{

ucharpos;

switch(x)

{

case1:pos=0x80;break;

case2:pos=0x90;break;

case3:pos=0x88;break;

case4:pos=0x98;break;

default:pos=0x80;

}

pos+=y;

write_cmd(pos);

}

voidLCD_init(void)

{

write_cmd(0x30);

delay(5);

write_cmd(0x0C);

delay(5);

write_cmd(0x01);

delay(5);

write_cmd(0x02);

delay(5);

}

voidSys_clock_init(void)

{

uinti=0;

BCSCTL1|=CALBC1_16MHZ;

DCOCTL|=CALDCO_16MHZ;

for(i=0;i<65535;i++);

BCSCTL2|=SELM_0;

BCSCTL2|=DIVS_0;

}

voidAD_init(void)

{

ADC10CTL0=ADC10ON+ADC10IE+MSC+ADC10SHT_3;

ADC10CTL1|=CONSEQ_3+INCH_1;;

ADC10AE0|=BIT0+BIT1;

ADC10DTC1=0x40;

}

voidIO_init(void)

{

//P1REN|=BIT0+BIT1;

//P1OUT=0x00;

//P1DIR|=BIT0+BIT1;

//P1DIR|=BIT0+BIT1+BIT2+BIT3;

P1DIR=0x0C;

}

voidjisuan()

{

ucharj;

maxr=0;

maxaver=0;

for(j=0;j<64;j+=2)

{

if(aver[j]>maxaver&&aver[j]<1024)

maxaver=aver[j];

}

maxr=(maxaver*3.56)/1023;

max=maxr*10000;

dis=max;

lcd_pos(2,2);

write_dat(zifu[dis/10000]);

write_dat('.');

write_dat(zifu[dis/1000%10]);

write_dat(zifu[dis/100%10]);

write_dat(zifu[dis/10%10]);

write_dat(zifu[dis%10]);

write_dat('V');

maxr=0;

maxaver=0;

for(j=1;j<64;j+=2)

{

if(aver[j]>maxaver&&aver[j]<1024)

maxaver=aver[j];

}

maxr=(maxaver*3.56)/1023;

max=maxr*10000;

dis=max;

lcd_pos(4,2);

write_dat(zifu[dis/10000]);

write_dat('.');

write_dat(zifu[dis/1000%10]);

write_dat(zifu[dis/100%10