sca100t.zip_SCA100T单片机_return_sca100t spi_sca100t测试程序_sca100t温度

#ifndef sca100t_H #define sca100t_H //#include "math.h" #define CLK GPBCON[4] #define MISO GPBCON[6] #define MOSI GPBCON[7] #define CSB GPBCON[5] void init_sca(); void SPI_Reset(void); void SPI_Delay(unsigned char n); void SPI_Start(void); void SPI_Stop(void); unsigned int SPI_ReadBits(unsigned char n); void SPI_WriteByte(unsigned char cmd); void Meas(); uint SPI_GetX( void ); uint SPI_GetY( void ); uint SPI_GetTR( void ); double GET_Xangle(uint X_data); double GET_Yangle(uint Y_data); ////////////////////////////////////////////////// #include "sca100t.h" #include "math.h" /*程序的调用在主程序main.c的定时器函数中，请注意查找*/ /*为了便于模拟输出的实现，这里将命令做了更改，即首位倒序，请注意和文档上的差异*/ #define MEAS 0x00 //测量模式 #define RWTR 0x10 //读写温度数据寄存器，0x08 #define STX 0x0E //x通道自检 #define STY 0x0F //Y通道自检 #define RDAX 0x08 //读Ｘ通道加速度值，0x10 #define RDAY 0x88 //读Ｙ通道加速度值，0x11 #define LOW 0 #define HIGH 1 ///////////////延时子函数///////////// void SPI_Delay(unsigned char n) { while(n--) ; } /////////////////////////////////// void SPI_Start(void) { CSB = HIGH; SPI_Delay(100); CLK = LOW; CSB = LOW; SPI_Delay(5); } ///////////////////////////////////// void SPI_Stop( void ) { CLK = LOW; CSB = HIGH; SPI_Delay(10); } //////////////////////////////////// //写命令函数，注意数据是在时钟的上升沿 void SPI_WriteByte(unsigned char cmd) { unsigned char i; for(i=0;i<8;i++) { CLK = LOW; SPI_Delay(9); MOSI=cmd&0x01; cmd>>=1; SPI_Delay(6); CLK = HIGH; SPI_Delay(18); } } //主机读入N个比特 //n 限制为16及其以下 //结束状态　CLK　=　0 unsigned int SPI_ReadBits( unsigned char n ) //读数据函数， { uint rtemp=0,i; MOSI = LOW; CLK = LOW; SPI_Delay(18); for( i = 0 ; i < n ; ++i ) { rtemp <<= 1; if( MISO == 1 ) { rtemp |= 0x0001; } else { rtemp &= 0xFFFE; } CLK = HIGH; SPI_Delay(18); CLK = LOW; SPI_Delay(15); } return rtemp; } ////////////////设定为测量模式，一般用于自检模式后///////////////// void Meas(void) { uint result; SPI_Start(); SPI_WriteByte(MEAS); result = SPI_ReadBits(11); SPI_Stop(); } ////////////////////获取x轴加速度/////////////////////// uint SPI_GetX( void ) { uint result; PORTCD_PD7 = 1; SPI_Start(); SPI_WriteByte( RDAX ); result = SPI_ReadBits(11); SPI_Stop(); PORTCD_PD7 = 0; return result; } //////////////////获取y轴加速度//////////////////// uint SPI_GetY( void ) { uint result; SPI_Start(); SPI_WriteByte( RDAY ); result = SPI_ReadBits(11); SPI_Stop(); return result; } /////////////////获取温度///////////////// uint SPI_GetTR( void ) { uint result; SPI_Start(); SPI_WriteByte(RWTR); result = SPI_ReadBits(11); SPI_Stop(); return result; } ///////////////////获取x轴角度值/////////////////// double GET_Xangle(uint X_data) { double angle; angle= (X_data-1024.0)/1638.0; angle= asin(angle)*180/3.1415926; //此处的反正弦函数为S12库函数，调用时注意相应更改 return angle; } ///////////////////获取y轴角度值/////////////////// double GET_Yangle(uint Y_data) { double angle; angle= (Y_data-1024.0)/1638.0; angle= asin(angle)*180/3.1415926; return angle; }