accelerate.c

用c8051f320单片机,任选两个IO口进行模拟IIC操做,用软件IIC对加速度芯片MXC6020进行读写操作(IIC接口)

#include "MEMSIC.h"



uint16 xdata iXReal0;
uint16 xdata iYReal0;


void EnableAccelerometer(void)
{
    StartI2c();
    I2cBuffer=0x20;
	WriteI2cByte();
	ReadI2cAck();
    I2cBuffer=0x00;WriteI2cByte();ReadI2cAck();
    I2cBuffer=0x00;WriteI2cByte();ReadI2cAck();
    StopI2c();
}



void DisableAccelerometer(void)
{
    StartI2c();
    I2cBuffer=0x20;WriteI2cByte();ReadI2cAck();
    I2cBuffer=0x00;WriteI2cByte();ReadI2cAck();
    I2cBuffer=0x01;WriteI2cByte();ReadI2cAck();
    StopI2c();
}



void ReadAcceleration(void)
{
    StartI2c();
    I2cBuffer=0x20;WriteI2cByte();ReadI2cAck();
    I2cBuffer=0x01;WriteI2cByte();ReadI2cAck();
    StopI2c();
    StartI2c();
    I2cBuffer=0x21;WriteI2cByte();ReadI2cAck();	
    ReadI2cByte();WriteI2cAck();iXReal0=I2cBuffer;
    ReadI2cByte();WriteI2cAck();iXReal0=iXReal0<<8+I2cBuffer;
    ReadI2cByte();WriteI2cAck();iYReal0=I2cBuffer;
    ReadI2cByte();WriteI2cAck();iYReal0=iYReal0<<8+I2cBuffer;
    StopI2c();
}