ttss_weight/source/asp/新建文件夹/SL_Sc7a20_FreeFall_Driver.c

#include "SL_Sc7a20_FreeFall_Driver.h"
#include "msp_iicM1.h"

unsigned char SL_MEMS_i2c_spi_Write(unsigned char reg, unsigned char dat)
{
	///void L2_IICM1_WriteCmd(unsigned char sla,unsigned char reg,unsigned char cmd)
    L2_IICM1_WriteCmd(SC7A20_IIC_ADDRESS,  reg,  dat);       //由客户的II函数接口决定
    return 1;
}

unsigned char SL_MEMS_i2c_spi_Read(unsigned char reg, unsigned char len, unsigned char *buf)
{
	///void L2_IICM1_ReadReg(unsigned char sla,unsigned char reg,
	///						unsigned char *r,unsigned char n)
    L2_IICM1_ReadReg( SC7A20_IIC_ADDRESS,  reg, buf,  len);//由客户的II函数接口决定
    return 1;
}


/***************在线测试**********************/
signed char  SL_SC7A20_Online_Test(void)
{
    unsigned char SL_Read_Reg=0xff;
    SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,0x0F,1, &SL_Read_Reg); 
    if(SL_Read_Reg==SC7A20_CHIP_ID_VALUE)   return  1;
    else                                    return -1;
}

/***************BOOT 重载内部寄存器值*********************/
signed char  SL_SC7A20_BOOT(void)
{
    unsigned char SL_Read_Reg=0xff;
    SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,0x24,1, &SL_Read_Reg);
    SL_Read_Reg=SL_SC7A20_BOOT_ENABLE|SL_Read_Reg;
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x24, SL_Read_Reg);
    return  1;
}


/***************传感器量程设置**********************/
signed char  SL_SC7A20_FS_Config(unsigned char Sc7a20_FS_Reg)
{
    unsigned char SL_Read_Reg=0xff,SL_Write_Reg;
    SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,0x23,1, &SL_Read_Reg); 
//    SL_Write_Reg=0x80|Sc7a20_FS_Reg|SL_SC7A20_HR_ENABLE;
    SL_Write_Reg=0x80|Sc7a20_FS_Reg;	
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x23, SL_Write_Reg);
    SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,0x23,1, &SL_Read_Reg); 
    if(SL_Read_Reg==SL_Write_Reg)   return  1;
    else                            return -1;
}

/***************数据更新速率**加速度计使能**********/
signed char  SL_SC7A20_Power_Config(unsigned char Power_Config_Reg)
{
    unsigned char SL_Read_Reg;

#if  SL_SC7A20_MTP_ENABLE == 0X01
    SL_Read_Reg  = 0x00;
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x1E, SL_SC7A20_MTP_VALUE);
    SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,0x57,1, &SL_Read_Reg); 
    SL_Read_Reg=SL_Read_Reg|SL_SC7A20_SDO_PU_MSK|SL_SC7A20_I2C_PU_MSK;
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x57, SL_Read_Reg);
#endif
    SL_Read_Reg  = 0xff;
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x20, Power_Config_Reg);
    SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,0x20,1, &SL_Read_Reg); 

    if(SL_Read_Reg==Power_Config_Reg)   return  1;
    else                                return -1;
}


/***************数据更新速率**加速度计使能**********/
signed char  SL_SC7A20_FreeFall_Config(void)
{
    unsigned char SL_Read_Reg;

    SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,0x24,1, &SL_Read_Reg);
    SL_Read_Reg=0x80|SL_Read_Reg;//AOI1 LATCH
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x24, SL_Read_Reg);
	
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x22, 0x40);//AOI1 映射到INT1	
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x25, 0x02);//INT1 默认高电平，有中断输出低电平
	
	//FreeFall AOI1
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x30, 0x95);
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x32, 0x19);	
    SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE,0x33, 0x04);	
	
    SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,0x30,1, &SL_Read_Reg); 

    if(SL_Read_Reg==0x95)   return  1;
    else                    return -1;
}

#if   SL_SC7A20_16BIT_8BIT==0
/***************加速度计数据读取*8bits*********/
signed char  SL_SC7A20_Read_XYZ_Data(signed char *SL_SC7A20_Data_XYZ_Buf)
{
    unsigned char SL_Read_Buf[7];
    
    SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,SL_SC7A20_STATUS_REG,1, &SL_Read_Buf[0]);
    
    if((SL_Read_Buf[0]&0x0f)==0x0f)
    {
#if   SL_SC7A20_SPI_IIC_MODE ==1//IIC
        SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,SL_SC7A20_DATA_OUT,6, &SL_Read_Buf[1]);
#elif SL_SC7A20_SPI_IIC_MODE ==0//SPI
        SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,SL_SC7A20_STATUS_REG,7, &SL_Read_Buf[0]);  
#endif
        SL_SC7A20_Data_XYZ_Buf[0]=(signed char)SL_Read_Buf[2];
        SL_SC7A20_Data_XYZ_Buf[1]=(signed char)SL_Read_Buf[4];
        SL_SC7A20_Data_XYZ_Buf[2]=(signed char)SL_Read_Buf[6];
        return  1;   
    }
    else
    {
        return 0;
    }
}
#elif SL_SC7A20_16BIT_8BIT==1
/***************加速度计数据读取*16bits*********/
signed char  SL_SC7A20_Read_XYZ_Data(signed short *SL_SC7A20_Data_XYZ_Buf)
{
    unsigned char SL_Read_Buf[7];
    
    SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,SL_SC7A20_STATUS_REG,1, &SL_Read_Buf[0]);
    
    if((SL_Read_Buf[0]&0x0f)==0x0f)
    {
#if   SL_SC7A20_SPI_IIC_MODE ==1//IIC
        SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,SL_SC7A20_DATA_OUT,6, &SL_Read_Buf[1]);
#elif SL_SC7A20_SPI_IIC_MODE ==0//SPI
        SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE,SL_SC7A20_STATUS_REG,7, &SL_Read_Buf[0]);  
#endif   
        SL_SC7A20_Data_XYZ_Buf[0]=(signed short)((SL_Read_Buf[2]<<8) + SL_Read_Buf[1]);
        SL_SC7A20_Data_XYZ_Buf[1]=(signed short)((SL_Read_Buf[4]<<8) + SL_Read_Buf[3]);
        SL_SC7A20_Data_XYZ_Buf[2]=(signed short)((SL_Read_Buf[6]<<8) + SL_Read_Buf[5]);
        return  1;
    }
    else
    {
        return 0;
    }
}
#endif

//自由落体检测
signed char SL_SC7A20_Freefall_Status(void)
{
	unsigned char sl_freefall_reg;
	
	SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE, 0x31,1, &sl_freefall_reg);
	//USART_printf( USART1, "SL_reg31:%x!\r\n",sl_freefall_reg);  
	if((sl_freefall_reg&0x40)==0x40)
	{
		return 1;//自由落体成立
	}	

	return 0;//自由落体不成立
}


signed char  SL_SC7A20_Power_Down(void)//power down
{
	unsigned char SL_Read_Reg  = 0xff;
	SL_SC7A20_I2c_Spi_Write(SL_SC7A20_SPI_IIC_MODE, 0x20, 0x00);
	SL_SC7A20_I2c_Spi_Read(SL_SC7A20_SPI_IIC_MODE, 0x20,1, &SL_Read_Reg); 
	if(SL_Read_Reg==0x00)   return  1;
	else                    return -1;
}