stm32f4 移植 mpu6050 md6.12步骤

复制 motion_driver_6.12armSTM32F4_MD6ProjectseMD6core 下的所有文件到工程：

工程使用keil，在motion_driver_6.12mpl librariesarmKeil等下找到libmpllib_keil_m4，替换mpl文件夹里面平台库文件libmpllib.a：

打开工程设置MPL_LOG_NDEBUG=1,EMPL,MPU6050,EMPL_TARGET_STM32F4，和添加头文件：

 添加目录和添加C文件：

 修改inv_mpu.c文件：

#if defined EMPL_TARGET_STM32F4
#include "i2c.h"   
#include "main.h"
#include "log.h"
#include 

   
#define i2c_write   Sensors_I2C_WriteRegister
#define i2c_read    Sensors_I2C_ReadRegister
#define delay_ms    HAL_Delay  //mdelay
#define get_ms      get_tick_count
#define log_i       printf  //MPL_LOGI
#define log_e       printf  //MPL_LOGE
#define min(a,b) ((a 
编写驱动接口代码和初始化代码：
 
#ifndef _MY_MPU6050_H_
#define _MY_MPU6050_H_

#include "stm32f4xx.h"
#include 
#include 






void gyro_data_ready_cb(void);

int Sensors_I2C_WriteRegister(unsigned char slave_addr, unsigned char reg_addr, unsigned char length, unsigned char *data);

int Sensors_I2C_ReadRegister(unsigned char slave_addr, unsigned char reg_addr, unsigned char length, unsigned char *data);

int get_tick_count(unsigned long *count);

void mpu6050_init(void);

uint8_t mpu_dmp_init(void);

uint8_t mpu_dmp_get_data(float *pitch,float *roll,float *yaw);

int fputcc(int ch);



#endif
 
#include "usart.h"
#include "i2c.h"
#include "gpio.h"
#include "main.h"
#include "my_mpu6050.h"

    
#include "inv_mpu.h"
#include "inv_mpu_dmp_motion_driver.h"
#include "invensense.h"
#include "invensense_adv.h"
#include "eMPL_outputs.h"
#include "mltypes.h"
#include "mpu.h"
#include "log.h"
#include "packet.h"



#define PRINT_ACCEL     (0x01)
#define PRINT_GYRO      (0x02)
#define PRINT_QUAT      (0x04)
#define PRINT_COMPASS   (0x08)
#define PRINT_EULER     (0x10)
#define PRINT_ROT_MAT   (0x20)
#define PRINT_HEADING   (0x40)
#define PRINT_PEDO      (0x80)
#define PRINT_LINEAR_ACCEL (0x100)
#define PRINT_GRAVITY_VECTOR (0x200)

volatile uint32_t hal_timestamp = 0;
#define ACCEL_ON        (0x01)
#define GYRO_ON         (0x02)
#define COMPASS_ON      (0x04)

#define MOTION          (0)
#define NO_MOTION       (1)


#define DEFAULT_MPU_HZ  (20)

#define FLASH_SIZE      (512)
#define FLASH_MEM_START ((void*)0x1800)

#define PEDO_READ_MS    (1000)
#define TEMP_READ_MS    (500)
#define COMPASS_READ_MS (100)

#define q30  1073741824.0f


static signed char gyro_orientation[9] = { 1, 0, 0,
                                           0, 1, 0,
                                           0, 0, 1};



int Sensors_I2C_WriteRegister(unsigned char slave_addr, unsigned char reg_addr, unsigned char length, unsigned char *data)
{
  HAL_StatusTypeDef status = HAL_OK;
  status = HAL_I2C_Mem_Write(&hi2c1, slave_addr, reg_addr, I2C_MEMADD_SIZE_8BIT, data, length, 0xFF);
  
  if (status != HAL_OK)
  {
    printf("I2C write wrong!n");
    return HAL_ERROR;
  }
  
  while (HAL_I2C_GetState(&hi2c1) != HAL_I2C_STATE_READY);
  while (HAL_I2C_IsDeviceReady(&hi2c1, slave_addr, 50, 0xFF) == HAL_TIMEOUT);
  while (HAL_I2C_GetState(&hi2c1) != HAL_I2C_STATE_READY);
  return status;
}

int Sensors_I2C_ReadRegister(unsigned char slave_addr, unsigned char reg_addr, unsigned char length, unsigned char *data)
{
  HAL_StatusTypeDef status = HAL_OK;
  status = HAL_I2C_Mem_Read(&hi2c1,slave_addr, reg_addr, I2C_MEMADD_SIZE_8BIT, data, length, 0xFF);

  while (HAL_I2C_GetState(&hi2c1) != HAL_I2C_STATE_READY);
  while (HAL_I2C_IsDeviceReady(&hi2c1, slave_addr, 50, 0xFF) != HAL_TIMEOUT);
  while (HAL_I2C_GetState(&hi2c1) != HAL_I2C_STATE_READY);
  return status;
}

int get_tick_count(unsigned long *count)
{
  *count = HAL_GetTick();
  return 0;
}

int fputcc(int ch)
{
  HAL_UART_Transmit(&huart1, (uint8_t*)&ch, 1, 0xFF);
  return 0;
}

uint8_t run_self_test(void)
{
  int result;
  long gyro[3], accel[3];

  result = mpu_run_self_test(gyro, accel);
  if (result == 0x07) {                   //返回0x03为MPU6050六轴，只要通过该if语句，就可以实现零偏自动校准
      
      float sens;
      unsigned short accel_sens;
      mpu_get_gyro_sens(&sens);           //读取当前陀螺仪的状态
      gyro[0] = (long)(gyro[0] * sens);
      gyro[1] = (long)(gyro[1] * sens);
      gyro[2] = (long)(gyro[2] * sens);
      dmp_set_gyro_bias(gyro);            //根据读取的状态进行校准

      mpu_get_accel_sens(&accel_sens);    //读取当前加速度计的状态
      accel[0] *= accel_sens;
      accel[1] *= accel_sens;
      accel[2] *= accel_sens;
      dmp_set_accel_bias(accel);          //根据读取的状态进行校准
      printf("setting bias succesfully ......rn");
      return 0;
    }
    else
      return 1;
}

//mpu6050,dmp初始化
//返回值:0,正常
//    其他,失败
uint8_t mpu_dmp_init(void)
{
	uint8_t res=0;
	struct int_param_s int_param;//这个没什么用，就是为了能给他实参调用起来
	if(mpu_init(&int_param)==0)	//初始化MPU6050
	{	 
		res=mpu_set_sensors(INV_XYZ_GYRO|INV_XYZ_ACCEL);//设置所需要的传感器
		if(res)return 1; 
		res=mpu_configure_fifo(INV_XYZ_GYRO | INV_XYZ_ACCEL);//设置FIFO
		if(res)return 2; 
		res=mpu_set_sample_rate(100);	//设置采样率
		if(res)return 3; 
		res=dmp_load_motion_driver_firmware();		//加载dmp固件
		if(res)return 4; 
		res=dmp_set_orientation(inv_orientation_matrix_to_scalar(gyro_orientation));//设置陀螺仪方向
		if(res)return 5; 
		res=dmp_enable_feature(DMP_FEATURE_6X_LP_QUAT|DMP_FEATURE_TAP|	//设置dmp功能
		    DMP_FEATURE_ANDROID_ORIENT|DMP_FEATURE_SEND_RAW_ACCEL|DMP_FEATURE_SEND_CAL_GYRO|
		    DMP_FEATURE_GYRO_CAL);
		if(res)return 6; 
		res=dmp_set_fifo_rate(100);	//设置DMP输出速率(最大不超过200Hz)
		if(res)return 7;   
		res = run_self_test();		//自检
		if(res)return 8;    
		res=mpu_set_dmp_state(1);	//使能DMP
		if(res)return 9;     
	}
	return 0;
}


//得到dmp处理后的数据(注意,本函数需要比较多堆栈,局部变量有点多)
//pitch:俯仰角 精度:0.1°   范围:-90.0° <---> +90.0°
//roll:横滚角  精度:0.1°   范围:-180.0°<---> +180.0°
//yaw:航向角   精度:0.1°   范围:-180.0°<---> +180.0°
//返回值:0,正常
//    其他,失败
uint8_t mpu_dmp_get_data(float *pitch,float *roll,float *yaw)
{
	float q0=1.0f,q1=0.0f,q2=0.0f,q3=0.0f;
	unsigned long sensor_timestamp;
	short gyro[3], accel[3], sensors;
	unsigned char more;
	long quat[4]; 
	if(dmp_read_fifo(gyro, accel, quat, &sensor_timestamp, &sensors,&more))return 1;	 
	
	
	
	if(sensors&INV_WXYZ_QUAT) 
	{
		q0 = quat[0] / q30;	//q30格式转换为浮点数
		q1 = quat[1] / q30;
		q2 = quat[2] / q30;
		q3 = quat[3] / q30; 
		//计算得到俯仰角/横滚角/航向角
		*pitch = asin(-2 * q1 * q3 + 2 * q0* q2)* 57.3;	// pitch
		*roll  = atan2(2 * q2 * q3 + 2 * q0 * q1, -2 * q1 * q1 - 2 * q2* q2 + 1)* 57.3;	// roll
		*yaw   = atan2(2*(q1*q2 + q0*q3),q0*q0+q1*q1-q2*q2-q3*q3) * 57.3;	//yaw
	}else return 2;
	return 0;
}

 
修改通讯地址：
 
 
 完成后编译未报错，在main函数调用mpu_dmp_get_data(&pitch, &roll, &yaw)，就可以读取欧拉角。