MMA7361的c程序.doc

/名称：单片机串口输出MMA7361角度值/使用单片机：stc12c5a60s2/晶振：11.0592m/X轴-(ADC0)P1.0 /Y轴-(ADC1)P1.1 /Z轴-(ADC1)P1.2/用pc串口助手显示时，选择字符显示 /参考宏晶网址例程#include reg51.h#include intrins.h#include /Keil library #include /Keil library/#define FOSC 18432000L#define FOSC 11059200L /晶振11.0592M#define BAUD 9600typedef unsigned char BYTE;typedef unsigned int WORD;#define uchar unsigned char#define uint unsigned int/*Declare SFR associated with the ADC */sfr AUXR1 = 0XA2;sfr ADC_CONTR = 0xBC; /ADC control registersfr ADC_RES = 0xBD; /ADC high 8-bit result registersfr ADC_RESL = 0xBE;sfr ADC_LOW2 = 0xBE; /ADC low 2-bit result registersfr P1ASF = 0x9D; /P1 secondary function control register/*Define ADC operation const for ADC_CONTR*/#define ADC_POWER 0x80 /ADC power control bit#define ADC_FLAG 0x10 /ADC complete flag#define ADC_START 0x08 /ADC start control bit#define ADC_SPEEDLL 0x00 /420 clocks#define ADC_SPEEDL 0x20 /280 clocks#define ADC_SPEEDH 0x40 /140 clocks#define ADC_SPEEDHH 0x60 /70 clocksvoid InitUart();void InitADC();void SendData(BYTE dat);int GetADCResult(BYTE ch);void Delay(WORD n);uchar ge,shi,bai,qian,wan; /显示变量void conversion(uint temp_data) wan=temp_data/10000+0x30 ; temp_data=temp_data%10000; /取余运算qian=temp_data/1000+0x30 ; temp_data=temp_data%1000; /取余运算 bai=temp_data/100+0x30 ; temp_data=temp_data%100; /取余运算 shi=temp_data/10+0x30 ; temp_data=temp_data%10; /取余运算 ge=temp_data+0x30; /*-Get ADC result-*/int GetADCResult(BYTE ch) int AD10bitResult; ADC_CONTR = ADC_POWER | ADC_SPEEDLL | ch | ADC_START; _nop_(); /Must wait before inquiry _nop_(); _nop_(); _nop_(); while (!(ADC_CONTR & ADC_FLAG);/Wait complete flag ADC_CONTR &= ADC_FLAG; /Close ADC AD10bitResult=ADC_RES; AD10bitResult= 338 (AD值即十进制338，十六进制0X0152)x-=0X0152; /y-=0X0152;z-=0X0152; Q=x; T=y; K=z; Q=-Q; Roll=(float)(atan2(K,Q)*180)/3.14159265)+180); Pitch=(float)(atan2(K,T)*180)/3.14159265)+180); conversion(Roll); /横滚角0-360度 /conversion(Pitch); /