pikapython/bsp/TC264D/Libraries/seekfree_peripheral/SEEKFREE_MMA8451.c

/*********************************************************************************************************************
 * COPYRIGHT NOTICE
 * Copyright (c) 2020,<EFBFBD><EFBFBD><EFBFBD>ɿƼ<EFBFBD>
 * All rights reserved.
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>QQȺ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ⱥ<EFBFBD><EFBFBD>824575535
 *
 * <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݰ<EFBFBD>Ȩ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɿƼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>У<EFBFBD>δ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ҵ<EFBFBD><EFBFBD>;<EFBFBD><EFBFBD>
 * <EFBFBD><EFBFBD>ӭ<EFBFBD><EFBFBD>λʹ<EFBFBD>ò<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>޸<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ʱ<EFBFBD><EFBFBD><EFBFBD>뱣<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɿƼ<EFBFBD><EFBFBD>İ<EFBFBD>Ȩ<EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
 *
 * @file       		MMA8451
 * @company	   		<EFBFBD>ɶ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɿƼ<EFBFBD><EFBFBD><EFBFBD><EFBFBD>޹<EFBFBD>˾
 * @author     		<EFBFBD><EFBFBD><EFBFBD>ɿƼ<EFBFBD>(QQ3184284598)
 * @version    		<EFBFBD>鿴doc<EFBFBD><EFBFBD>version<EFBFBD>ļ<EFBFBD> <EFBFBD>汾˵<EFBFBD><EFBFBD>
 * @Software 		ADS v1.2.2
 * @Target core		TC264D
 * @Taobao   		https://seekfree.taobao.com/
 * @date       		2020-3-23
 * @note		
					<EFBFBD><EFBFBD><EFBFBD>߶<EFBFBD><EFBFBD>壺
					------------------------------------ 
						SCL                 <EFBFBD>鿴SEEKFREE_IIC<EFBFBD>ļ<EFBFBD><EFBFBD>ڵ<EFBFBD>SEEKFREE_SCL<EFBFBD>궨<EFBFBD><EFBFBD>
						SDA                 <EFBFBD>鿴SEEKFREE_IIC<EFBFBD>ļ<EFBFBD><EFBFBD>ڵ<EFBFBD>SEEKFREE_SDA<EFBFBD>궨<EFBFBD><EFBFBD>
					------------------------------------ 
 ********************************************************************************************************************/



#include "zf_stm_systick.h"
#include "SEEKFREE_IIC.h"
#include "SEEKFREE_MMA8451.h"


//SA0<41><30><EFBFBD><EFBFBD><EFBFBD>ӵ<EFBFBD>

int16 acc_x = 0, acc_y = 0, acc_z = 0;



//-------------------------------------------------------------------------------------------------------------------
//  @brief      L3G4200D<30>Լ캯<D4BC><ECBAAF>
//  @param      NULL
//  @return     void					
//  @since      v1.0
//  Sample usage:				<09><><EFBFBD>øú<C3B8><C3BA><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD>ģ<EFBFBD><C4A3>IIC<49>ij<EFBFBD>ʼ<EFBFBD><CABC>
//-------------------------------------------------------------------------------------------------------------------
void mma8451_self_check(void)
{
    uint16 v;
    do
    {
        v= simiic_read_reg(MMA8451_DEV_ADD, WHO_AM_I_REG, SIMIIC);
        //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ԭ<EFBFBD><D4AD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>¼<EFBFBD><C2BC><EFBFBD>
        //1 ģ<>黵<EFBFBD>ˣ<EFBFBD><CBA3><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>µ<EFBFBD><C2B5><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ĸ<EFBFBD><C4B8>ʼ<EFBFBD><CABC><EFBFBD>
        //2 <20><><EFBFBD>ߴ<EFBFBD><DFB4><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>û<EFBFBD>нӺ<D0BD>
        //3 <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>Ҫ<EFBFBD><D2AA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>裬<EFBFBD><E8A3AC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>3.3V
		//4 <20><><EFBFBD><EFBFBD>û<EFBFBD>е<EFBFBD><D0B5><EFBFBD>ģ<EFBFBD><C4A3>IIC<49>ij<EFBFBD>ʼ<EFBFBD><CABC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    }while((v != MMA8451Q_ID)&&(v != MMA8452Q_ID)&&(v != MMA8453Q_ID));
}



//-------------------------------------------------------------------------------------------------------------------
//  @brief      <20><>ʼ<EFBFBD><CABC>MMA8451<35><31><EFBFBD>ٶȼ<D9B6>
//  @param      NULL
//  @return     uint8			<09><><EFBFBD><EFBFBD>1<EFBFBD>ɹ<EFBFBD><C9B9><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>0ʧ<30><CAA7>						
//  @since      v1.0
//  Sample usage:				<09><><EFBFBD>øú<C3B8><C3BA><EFBFBD>ǰ<EFBFBD><C7B0><EFBFBD><EFBFBD><EFBFBD>ȵ<EFBFBD><C8B5><EFBFBD>ģ<EFBFBD><C4A3>IIC<49>ij<EFBFBD>ʼ<EFBFBD><CABC>
//-------------------------------------------------------------------------------------------------------------------
uint8 mma845x_init(void)
{       
	simiic_init();
    systick_delay_ms(STM0, 50);
    
    mma8451_self_check();
    simiic_write_reg(MMA8451_DEV_ADD, CTRL_REG1,ASLP_RATE_20MS+DATA_RATE_2500US);	
    simiic_write_reg(MMA8451_DEV_ADD, XYZ_DATA_CFG_REG, FULL_SCALE_2G); //2G
    simiic_write_reg(MMA8451_DEV_ADD, CTRL_REG1, (ACTIVE_MASK+ASLP_RATE_20MS+DATA_RATE_5MS)&(~FREAD_MASK)); //<2F><><EFBFBD><EFBFBD>״̬   14bit

	return 0;
}

//-------------------------------------------------------------------------------------------------------------------
//  @brief      <20><>ȡMMA8451<35><31><EFBFBD>ٶȼ<D9B6><C8BC><EFBFBD><EFBFBD><EFBFBD>
//  @param      NULL
//  @return     void						
//  @since      v1.0
//  Sample usage:				ִ<>иú<D0B8><C3BA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ֱ<EFBFBD>Ӳ鿴<D3B2><E9BFB4>Ӧ<EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
//-------------------------------------------------------------------------------------------------------------------
void get_mma8451(void)
{	    
    uint8 dat[6];
    uint16 wx,wy,wz;
    
    simiic_read_regs(MMA8451_DEV_ADD, OUT_X_MSB_REG, dat, 6, SIMIIC);  
    
    wx = (uint16)dat[0]<<8 | dat[1];
    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD>ԭʼ<D4AD><CABC>Ӧ<EFBFBD><D3A6>ֵ
    if(dat[0]>0x7f) acc_x=-(int16)((~(wx>>2) + 1)&0X3FFF);  //<2F><>λȡ<CEBB><C8A1><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ȥ<EFBFBD><C8A5><EFBFBD><EFBFBD>Ч<EFBFBD>ַ<EFBFBD> 
    else            acc_x=(wx>>2)&0X3FFF; 	                //<2F><>λ<EFBFBD><CEBB><EFBFBD><EFBFBD>Ч<EFBFBD>ַ<EFBFBD> 	

    
    wy = (uint16)dat[2]<<8 | dat[3];
    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD>ԭʼ<D4AD><CABC>Ӧ<EFBFBD><D3A6>ֵ
    if(dat[2]>0x7f) acc_y=-(int16)((~(wy>>2) + 1)&0X3FFF);  //<2F><>λȡ<CEBB><C8A1><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ȥ<EFBFBD><C8A5><EFBFBD><EFBFBD>Ч<EFBFBD>ַ<EFBFBD> 
    else            acc_y=(wy>>2)&0X3FFF; 	                //<2F><>λ<EFBFBD><CEBB><EFBFBD><EFBFBD>Ч<EFBFBD>ַ<EFBFBD> 	

    
    wz = (uint16)dat[4]<<8 | dat[5];
    //<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ٶ<EFBFBD>ԭʼ<D4AD><CABC>Ӧ<EFBFBD><D3A6>ֵ
    if(dat[4]>0x7f) acc_z=-(int16)((~(wz>>2) + 1)&0X3FFF);  //<2F><>λȡ<CEBB><C8A1><EFBFBD><EFBFBD>һ<EFBFBD><D2BB>ȥ<EFBFBD><C8A5><EFBFBD><EFBFBD>Ч<EFBFBD>ַ<EFBFBD> 
    else            acc_z=(wz>>2)&0X3FFF; 	                //<2F><>λ<EFBFBD><CEBB><EFBFBD><EFBFBD>Ч<EFBFBD>ַ<EFBFBD> 

}