基于msp430g2553单片机ADC测量外部直流电压.doc

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1、#include#defineucharunsignedchar#defineuintunsignedint#defineLCD_CON_DIRP2DIR#defineLCD_CON_INP2IN#defineLCD_CON_OUTP2OUT#defineLCD_RSBIT0//p2.5接51p2.5#defineLCD_RWBIT1//p2.0接51p2.6#defineLCD_ENBIT2//p2.1接51p2.7#defineLCD_DATA_DIRP1DIR#defineL

2、CD_DATA_INP1IN#defineLCD_DATA_OUTP1OUT#defineA1000#defineB100#defineX10voidInitOsc(void);voidInitLCD(void);voidwrite_command(ucharcommand);voidwrite_data(uchardata);voidDisplay_ZFC(uchar*s);voidLCD_Set_xy(ucharx,uchary);voidTrans_val(uintHex_Val);voidDisplay

3、_Volte(uintHex_Val);voidMeasure_Volte(void);ucharnum[]={"0123456789.v"};ucharvolte[]={"Volt:"};uintindex=0;inti;unsignedlongsum=0;uintHex_Val;#defineNum_of_Results32uintresults[Num_of_Results];//保存ADC转换结果的数组uintaverage;/**************************************

4、**************************************ADC初始化*****************************************************************************/voidADC_Init(void){ADC10CTL0=ADC10SHT_2+ADC10ON+ADC10IE;//ADC10ON,interruptenabledADC10CTL1=INCH_1;//inputA1ADC10AE0

5、=0x02;//二次采集}/*****

6、***********************************************************************DCO时钟初始化设为1MHz*****************************************************************************/voidDCO_Init(void){if(CALBC1_1MHZ==0xFF

7、

8、CALDCO_1MHZ==0xFF){while(1);}BCSCTL1=CALBC1_1MHZ;DCOCT

9、L=CALDCO_1MHZ;BCSCTL2=SELM_0+DIVM_0;}/****************************************************************************向12864发送字节*****************************************************************************/voidSendByte(ucharZdata){uinti;for(i=0;i<8;i++){if((Zdat

10、a<

11、=LCD_RW;//clk始终信号为高}else{LCD_CON_OUT&=~LCD_RW;//clk始终信号为低}LCD_CON_OUT&=~LCD_EN;LCD_CON_OUT

12、=LCD_EN;}}/****************************************************************************向12864写命令***********************************************

13、******************************/voidwrite_command(ucharcommand){LCD_CON_OUT

14、=LCD_RS;SendByte(0xF8);SendByte(command&0xF0);SendByte((command<<4)&0xF0);_delay_cycles(200);}/************************