使用单片机读取倾角传感器SCA100T的数据

#include <C8051F340.h> #include <string.h> #include <absacc.h> #include <stdio.h> #include <stdlib.h> #include <intrins.h> #include <math.h> #include "delay.h" #include "1602.h" #include "sca100t.h" //----------------SPI_Delay----------------------------- void SPI_Delay(unsigned char n) { while(n--); } //------------------SPI_Stop（同SPI_Reset）------------------------------------ void SPI_Stop( void ) { CLK = LOW; CSN = HIGH; SPI_Delay(10); } //-----------------SPI_Start--------------------------- void SPI_Start(void) { CLK = LOW; CSN = LOW; SPI_Delay(10); } //-----------------SPI_WriteByte------------------------------------- void SPI_WriteByte( unsigned char wdata ) { unsigned char i; for( i = 0 ; i < 8 ; ++i ) { CLK = LOW; SPI_Delay(10); MOSI = wdata & 0x80; wdata = wdata << 1; SPI_Delay(10); CLK = HIGH; SPI_Delay(10); } CLK = LOW; } //-----------------SPI_ReadBits------------------------------------- unsigned int SPI_ReadBits( unsigned char n ) { unsigned int rtemp,i; MISO = 1; for( i = 0 ; i < n ; ++i ) { rtemp <<= 1; SPI_Delay(10); if( MISO == 1 ) { rtemp |= 0x0001; } else { rtemp &= 0xFFFE; } CLK = HIGH; SPI_Delay(10); CLK = LOW; SPI_Delay(10); } return rtemp; } //-----------------SPI_GetX------------------------------------- unsigned int SPI_GetX( void ) { unsigned int result; SPI_Start(); SPI_WriteByte( RDAX ); result = SPI_ReadBits(11); SPI_Stop(); return result; } //--------------SPI_GetY---------------------------------------- unsigned int SPI_GetY( void ) { unsigned int result; SPI_Start(); SPI_WriteByte( RDAY ); result = SPI_ReadBits(11); SPI_Stop(); return result; } //------------------------------------------------------ void SPI_Init( void ) { SPI_Start(); SPI_WriteByte( MEAS ); SPI_Stop(); } //------------------------------------------------------------------ void SCA100T_Init(void) { SPI_Stop(); SPI_Delay(1000); SPI_Init(); SPI_Delay(1000); } //---------------------------------------------------- float Get_angleX(void) {int Digit; float ANGle; Digit=SPI_GetX(); ANGle=asin((float) (Digit-1027)/818)/3.14*180; return (ANGle); } float Get_angleY(void) {int Digit; float ANGle; Digit=SPI_GetY(); ANGle=asin((float) (Digit-1024)/819)/3.14*180; return (ANGle); } //---------------------------------------------- float XJiaSuDu(void) { float Jia; int Digit; Digit=SPI_GetX(); Jia=(Digit-1024)/819*9.8; return (Jia); } //-------------------------------------------------- float YJiaSuDu(void) { float Jia; int Digit; Digit=SPI_GetY(); Jia=(Digit-1024)/819*9.8; return (Jia); }