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IIM42352 Accelerometer Project With STM32F303 Microcontroller

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IIM42352 gebrabit project

IIM42352 Accelerometer Project With STM32F303 Microcontroller

IIM42352 gebrabit project
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  5. IIM42352 Accelerometer Project With STM32F303 Microcontroller

What's the purpose of this project?

In this section, we are going to launch the IIM42352 sensor using ARM microcontroller, STM32F series. In order to use more conveniently and optimally in this project, we use two ready modules GB310A and GebraBit STM32F303. These two modules contain the minimum necessary elements of the IIM42352 sensor and the STM32F microcontroller, which are provided by the GebraBit team to facilitate the work.

What are we going to learn in this tutorial?

In this tutorial, in addition to setting up and using the IIM42352 sensor, you will get to know all the IIM42352 sensor registers, how to set the various parts of the STM32 microcontroller to set up this sensor using the SPI protocol, how to use the GB310A module specific library and driver file. You will also learn how to declare functions and finally receive sensor data in the Keil compiler.  

What do we need to start this project?

As you probably know, we need some hardware and software to do this project. The titles of these hardware and software are provided to you in the table below and you can prepare/download by clicking on each of them and get ready to start.

Required hardware
Required software
Keil compiler 
 STM32CubeMX program
 ST-LINK/V2 programmer

For this purpose, first select the SPI communication protocol using the on-board jumpers and then we place the GebraBit IIM42352 module as Pin to Pin on the GebraBit STM32F303 module as shown  in the below picture :

Note: The above picture is intended only to show how the GebraBit IIM42352 module is placed as pin to pin on the GebraBit STM32F303 module. Therefore, to use the SPI communication protocol, the user must choose the correct state of the on-board selector jumpers.

at the end, we will see the values of temperature and acceleration in the three “X, Y, Z” axes in real time in the “Watch1” window of the Keil compiler in “Debug Session”  mode.

STM32CubeMX settings

In the following, we review the settings related to each of the “SPI”, “RCC”, “Debug”, and “Clock” sections in the STM32F303 microcontroller to develop the GebraBit IIM42352 module.

RCC settings

Due to the presence of “8Mhz” crystal in the GebraBit STM32F303 module, we select the “external clock” in the “RCC” section:

Debug & Programming settings

Regarding the access to “SWCLK” and “SWDIO” pins in the GebraBit STM32F303 module, to reduce the number of pins during “Debug & Programming”, in the “SYS” block, we select the “Serial Wire” option in the “Debug” section:

SPI settings

To communicate with the GebraBit STM32F303 module via SPI, we select the “Full Duplex Master” mode and select the PB3, PB4, and PB5 pins as SCK, MISO and MOSI and define the PC13 pin as CS:

According to the sensor data sheet, the settings of the SPI parameters in the “Parameter Settings” section will be set as shown in the above image.

Clock settings

The “clock” settings for each part of the STM32F303 microcontroller in this code, are as follows:

Project Manager settings

“Project Manager” settings are as follows, here we have used “MDK-ARM”  version “5.32” compiler:

After completing all the above settings, we can develop our code easily just by one click on “GENERATE CODE” and adding the IIM42352 library and driver (provided by GebraBit).

You can download the “STM32Cube MX”, “IIM42352 library”, “driver” and KEIL project at the end of this tutorial.

IIM42352 library and driver

In addition to the modular design of various sensors and ICs, GebraBit tries to provide variety of structured and hardware-independent libraries in C language for the ease of users in setting up and developing software.

For this purpose, after preparing each GebraBit module, the users can refer to the “toturial” section of the desired module and download the dedicated library, which contains the “ .h” and “  .c” file (Header and Source) and a sample training program under “GebraBit STM32F303”, “GebraBit ATMEGA32A” or “Arduino” development boards.

All the defined functions and structures in the library are commented in full detail and all the received parameters in the arguments of the functions and their return values, are briefly explained. Since  the libraries are hardware independed. , the user can easily add the library in any of their favorite compilers and develop it by desired microcontroller and development board.

GebraBit IIM42352.h header file

In this file, based on the datasheet of the sensor or IC, all address registers, the values of each register are defined in the form of “Enumeration”. Also, the casing of the IIM42352 sensor and the configurations related to each of the IIM42352 sensor internal blocks are defined in the form of a “STRUCT” with the name GebraBit_IIM42352. Finally, in the Debug Session environment, all the configurations related to each block can be seen in real time.

IIM42352_Bank_Sel Enum

The sensor internal registry banks are defined in this enum:

				
					typedef enum bank_sel
{  
BANK_0 = 0 ,                   							   
BANK_1     ,                    							   
BANK_2     ,                     							 
BANK_3     ,                     							 
BANK_4     
}IIM42352_Bank_Sel;

				
			

IIM42352_Interface Enum

This enum is used to select the communication protocol with the sensor:

				
					typedef enum  interface
{  
 NOT_SPI = 0,                  						  
 IS_SPI                                 					
}IIM42352_Interface;

				
			

IIM42352_ Packet_To_FIFO Enum

This enum is used to store data in FIFO:

				
					typedef enum packet_to_FIFO
{  
NOTHING_To_FIFO    = 0,                  					            
ACCEL_TEMP_To_FIFO = 5                                 
}IIM42352_Packet_To_FIFO;

				
			

IIM42352_Soft_Reset_Config Enum

This enum is used for software reset of the sensor:

				
					typedef enum Soft_Reset_Config
{
IIM42352_RESET     = 0x01,                        
IIM42352_NOT_RESET = 0x00,              
} IIM42352_Soft_Reset_Config;

				
			

IIM42352_PIN9_FUNCTION Enum

 This enum is used for pin number 9 function settings are defined in this structure:

				
					typedef enum Pin9_Function
{
INT2   = 0,                 								
FSYNC  = 1,									
CLKIN  = 2								
									
} IIM42352_PIN9_FUNCTION;

				
			

IIM42352_Accel_Fs_Sel Enum

This enum is used to set the Full Scale Range of the sensor:

				
					typedef enum accel_fs_sel
{  
FS_16g = 0 ,                    							  
FS_8g      ,                							      
FS_4g      ,               							      
FS_2g            													
}IIM42352_Accel_Fs_Sel;

				
			

IIM42352_Accel_Scale_Factor Enum

The Scale Factor values corresponding to Full Scale Range are defined in this enum:   

				
					typedef enum Scale_Factor
{  
SCALE_FACTOR_2048_LSB_g  = 2048    ,           
SCALE_FACTOR_4096_LSB_g  = 4096    ,               
SCALE_FACTOR_8192_LSB_g  = 8192    ,                     
SCALE_FACTOR_16384_LSB_g = 16384           
}IIM42352_Accel_Scale_Factor;

				
			

IIM42352_Accel_ODR Enum

By Using the values of this enum, the Output Data Rate Sensor value is determined:

				
					
typedef enum accel_odr
{  
ODR_32KHz   = 1,   										
ODR_16KHz   = 2,
ODR_8KHz    = 3,   												
ODR_4KHz    = 4,    												
ODR_2KHz    = 5,    													
ODR_1KHz    = 6,    													 
ODR_200Hz   = 7,    												
ODR_100Hz   = 8,    													
ODR_50Hz    = 9,    												
ODR_25Hz    = 10,   	
ODR_12Hz5   = 11,  														
ODR_6Hz25   = 12,   										  		
ODR_3Hz125  = 13,  													  
ODR_1Hz5625 = 14,   								 					
ODR_500Hz   = 15    							 		 	   		
}IIM42352_Accel_ODR;


				
			

IIM42352_FIFO_MODE Enum

The FIFO working mode of the sensor is set by using the values of this enum:

				
					typedef enum FIFO_Config
{  
BYPASS = 0 ,                                 
STREAM_TO_FIFO,                          
STOP_ON_FULL                                   
}IIM42352_FIFO_MODE ;

				
			

IIM42352_Ability Enum

The values of this enum are used to activate and deactivate different parts of the sensor:

				
					typedef enum Ability
{  
Disable = 0,                      
Enable     
}IIM42352_Ability;

				
			

IIM42352_Data_Endian Enum

The values of this enum are used to specify the data format in FIFO:

				
					typedef enum                            
{  
LITTLE = 0,                                                  
BIG     																
}IIM42352_Data_Endian;

				
			

IIM42352_Timestamp_Resolution Enum

To determine the sensor “Time Stamp” resolution, the values of this enum are set:

				
					typedef enum timestamp_resolution
{
_1_uS   = 0,															
_16_uS                                         
} IIM42352_Timestamp_Resolution;

				
			

IIM42352_FIFO_Counting Enum

The values of this enum are used to specify how to FIFO count:

				
					typedef enum 
{  
IN_BYTES = 0,                               
IN_RECORDS                         
}IIM42352_FIFO_Counting;  

				
			

IIM42352_UI_Filter_Order Enum

The values of this enum are used to determine the filter used in the sensor:

				
					typedef enum UI_Filter_Order
{  
_1_ORDER = 0 ,                        
_2_ORDER     ,                    			
_3_ORDER                                  
}IIM42352_UI_Filter_Order ;

				
			

IIM42352_Power_Mode Enum

The values of this enum are used to set the Power Mode of the sensor:

				
					typedef enum Power_Mode
{
IIM42352_LOW_NOISE  = 0x03,        						
IIM42352_LOW_POWER  = 0x02,			
IIM42352_ACCEL_OFF  = 0x01											              
} IIM42352_Power_Mode;

				
			

IIM42352_Low_Noise_Filter_BW Enum

To set the sensor filter in Low Noise mode, the values of this enum are used:

				
					ypedef enum
{
LN_FILTER_BW_40 = 0x7 ,											
LN_FILTER_BW_20 = 0x6 ,												
LN_FILTER_BW_16 = 0x5 ,												
LN_FILTER_BW_10 = 0x4 ,													
LN_FILTER_BW_8  = 0x3 ,										
LN_FILTER_BW_5  = 0x2 ,												
LN_FILTER_BW_4  = 0x1 ,													
LN_FILTER_BW_2  = 0x0 													
} IIM42352_Low_Noise_Filter_BW;

				
			

IIM42352_ Low_Power_Filter_AVG Enum

The values of this enum are used to determine the filter used in the sensor in Low Power mode:

				
					typedef enum
{
 LP_1x_AVG_FILTER  = 0x1 ,					 
 LP_16x_AVG_FILTER = 0x6                       
} IIM42352_Low_Power_Filter_AVG;

				
			

IIM42352_Preparation Enum

This enum reflects the status of being ready or not for any data in the sensor:

				
					typedef enum Preparation
{  
IS_NOT_Ready = 0,                      
IS_Ready     
}IIM42352_Preparation; 

				
			

IIM42352_Reset_Status Enum

The final status of the sensor software reset is expressed in this enum:

				
					typedef enum Reset_Status
{  
FAILED = 0,                      
DONE     
}IIM42352_Reset_Status;

				
			

IIM42352_ FIFO_Ability Enum

This Enum is used to enable or disable FIFO:

				
					typedef enum FIFO_Ability
{  
FIFO_DISABLE = 0,                      
FIFO_ENABLE     
} IIM42352_FIFO_Ability;

				
			

IIM42352_Get_DATA Enum

How to receive data from the sensor is described in this enum:

				
					typedef enum Get_DATA
{  
FROM_REGISTER = 0,                      
FROM_FIFO     
} IIM42352_Get_DATA;

				
			

GebraBit_IIM42352 structure

All the information and configuration implemented on the sensor are stored in this “structure” and you can see the changes in each part of the sensor in the “Debug Session” environment.

Declaration of functions

At the end of this file, all the functions for reading and writing in IIM42352 registers, sensor configuration , FIFO and receiving data from the sensor are declared:

				
					/********************************************************
 *Declare Read&Write IIM42352 Register Values Functions *
 ********************************************************/
extern	uint8_t	GB_IIM42352_Read_Reg_Data ( uint8_t regAddr, IIM42352_Bank_Sel regBank, uint8_t* data);
extern	uint8_t GB_IIM42352_Read_Reg_Bits (uint8_t regAddr, IIM42352_Bank_Sel regBank, uint8_t start_bit, uint8_t len, uint8_t* data);
extern	uint8_t GB_IIM42352_Burst_Read(uint8_t regAddr, IIM42352_Bank_Sel regBank, uint8_t *data, uint16_t byteQuantity);
extern	uint8_t GB_IIM42352_Write_Reg_Data(uint8_t regAddr, IIM42352_Bank_Sel regBank, uint8_t data);
extern	uint8_t	GB_IIM42352_Write_Reg_Bits(uint8_t regAddr, IIM42352_Bank_Sel regBank, uint8_t start_bit, uint8_t len, uint8_t data);
extern	uint8_t GB_IIM42352_Burst_Write		( uint8_t regAddr, IIM42352_Bank_Sel regBank, uint8_t *data, 	uint16_t byteQuantity);
/********************************************************
 *       Declare IIM42352 Configuration Functions       *
 ********************************************************/
extern void GB_IIM42352_Enable_Disable_XYZ_ACCEL(GebraBit_IIM42352 * IIM42352 ,IIM42352_Ability x_axis,IIM42352_Ability y_axis,IIM42352_Ability z_axis );
extern void GB_IIM42352_Enable_Disable_Temperature(GebraBit_IIM42352 * IIM42352 ,IIM42352_Ability temp );
extern void GB_IIM42352_Set_Sensor_Data_Endian ( GebraBit_IIM42352 * IIM42352 , IIM42352_Data_Endian  data_end  );
extern void GB_IIM42352_Bank_Selection( IIM42352_Bank_Sel bsel);
extern void GB_IIM42352_Who_am_I(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Select_SPI4_Interface(GebraBit_IIM42352 * IIM42352 , IIM42352_Interface spisel);
extern void GB_IIM42352_Select_PIN9_Function(GebraBit_IIM42352 * IIM42352 ,  IIM42352_PIN9_FUNCTION pin9f);
extern void GB_IIM42352_DISABLE_FSYNC (GebraBit_IIM42352 * IIM42352 ,  IIM42352_Ability able ) ;
extern void GB_IIM42352_DISABLE_RTC_Mode ( void ) ;
extern void GB_IIM42352_SET_Time_Stamp_Register(GebraBit_IIM42352 * IIM42352 ,IIM42352_Ability ability);
extern void GB_IIM42352_Set_Timestamp_Resolution (GebraBit_IIM42352 * IIM42352 ,  IIM42352_Timestamp_Resolution res ) ;
extern void GB_IIM42352_SET_INT_ASYNC_RESET_ZERO(void );
/********************************************************
 *          Declare IIM42352 FIFO Functions             *
 ********************************************************/
extern void GB_IIM42352_FIFO_FLUSH(void );
extern void GB_IIM42352_Set_FIFO_MODE (GebraBit_IIM42352 * IIM42352 , IIM42352_FIFO_MODE mode ) ;
extern void GB_IIM42352_SET_FIFO_Count (GebraBit_IIM42352 * IIM42352 , IIM42352_FIFO_Counting counting , IIM42352_Data_Endian endian ) ;
extern void GB_IIM42352_GET_FIFO_Count(GebraBit_IIM42352 * IIM42352 ) ;
extern void GB_IIM42352_Write_ACCEL_TEMP_To_FIFO(GebraBit_IIM42352 * IIM42352 , IIM42352_Packet_To_FIFO allpack) ;
extern void GB_IIM42352_SET_FIFO_WATERMARK (GebraBit_IIM42352 * IIM42352 ,IIM42352_Ability watermark , uint16_t wm );
extern void GB_IIM42352_SET_FIFO_Decimation_Factor (GebraBit_IIM42352 * IIM42352 ,uint8_t factor );
extern void GB_IIM42352_FIFO_Configuration ( GebraBit_IIM42352 * IIM42352 , IIM42352_FIFO_Ability fifo   ) ;
extern void GB_IIM42352_SET_FIFO_High_Resolution( GebraBit_IIM42352 * IIM42352 ,IIM42352_Ability highres);
extern IIM42352_Preparation GB_IIM42352_Check_FIFO_FULL(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Read_FIFO(GebraBit_IIM42352 * IIM42352 , uint16_t qty)  ;
/********************************************************
 *          Declare IIM42352 ACCEL Functions             *
 ********************************************************/
extern void GB_IIM42352_Set_ACCEL_FS ( GebraBit_IIM42352 * IIM42352 , IIM42352_Accel_Fs_Sel fs )  ;
extern void GB_IIM42352_Set_ACCEL_ODR ( GebraBit_IIM42352 * IIM42352 , IIM42352_Accel_ODR odr ) ;
extern void GB_IIM42352_UI_Filter_Order (GebraBit_IIM42352 * IIM42352 ,  IIM42352_UI_Filter_Order order ) ;
extern void GB_IIM42352_ACCEL_LN_Filter_Configuration(GebraBit_IIM42352 * IIM42352 , IIM42352_Low_Noise_Filter_BW filter);
extern void GB_IIM42352_ACCEL_LP_Filter_Configuration(GebraBit_IIM42352 * IIM42352 , IIM42352_Low_Power_Filter_AVG filter);
extern void GB_IIM42352_SET_Data_Ready_Interrupt(GebraBit_IIM42352 * IIM42352 ,IIM42352_Ability ability);
extern void GB_IIM42352_SET_FIFO_Full_Interrupt(GebraBit_IIM42352 * IIM42352 , IIM42352_Ability ability);
extern IIM42352_Preparation GB_IIM42352_Check_Data_Preparation(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_Sensor_Data_Endian ( IIM42352_Data_Endian * data_end  ) ;
/********************************************************
 *          Declare IIM42352 DATA Functions             *
 ********************************************************/
extern void GB_IIM42352_Get_Temp_Register_Raw_Data(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_Temp_Register_Valid_Data(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_ACCEL_DATA_X_Register_Raw(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_ACCEL_DATA_Y_Register_Raw(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_ACCEL_DATA_Z_Register_Raw(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_ACCEL_DATA_X_Register_Valid_Data(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_ACCEL_DATA_Y_Register_Valid_Data(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_ACCEL_DATA_Z_Register_Valid_Data(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_Temperature(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_XYZ_ACCELERATION(GebraBit_IIM42352 * IIM42352);
/********************************************************
 *          Declare IIM42352 HIGH LEVEL Functions       *
 ********************************************************/
extern void GB_IIM42352_Format_Data_Base_On_Endian(GebraBit_IIM42352 * IIM42352, const uint8_t *datain, uint16_t *dataout);
extern void GB_IIM42352_Soft_Reset ( GebraBit_IIM42352 * IIM42352 );
extern void GB_IIM42352_Set_Power_Management(GebraBit_IIM42352 * IIM42352 , IIM42352_Power_Mode pmode);
extern void GB_IIM42352_initialize( GebraBit_IIM42352 * IIM42352 );
extern void GB_IIM42352_Configuration(GebraBit_IIM42352 * IIM42352, IIM42352_FIFO_Ability fifo);
extern void GB_IIM42352_Get_ACCEL_XYZ_TEMP_From_Registers(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_ACCEL_XYZ_TEMP_From_FIFO(GebraBit_IIM42352 * IIM42352);
extern void GB_IIM42352_Get_Data(GebraBit_IIM42352 * IIM42352 , IIM42352_Get_DATA get_data);

				
			

GebraBit_IIM42352.c source file

In this file, which is written in C language, all the functions are commented in full detail, and all the parameters received in the arguments of the functions and their return values are clearly explained so we confine to these explanations and invite users to check this file directly for more information.

Sample program in Keil

After making the Keil project by STM32CubeMX and adding the “GebraBit_IIM42352.c” library provided by GebraBit, we will examine the “main .c” file of the sample tutorial and view the output of the GebraBit_IIM42352 module in the “watch” part in the the Keil compiler  “Debugging” environment.

Description of “main.c” file

If you look carefully at the beginning part of the “main.c” file, you will notice that the “GebraBit_IIM42352.h” header has been added to access the structures and functions required by the GebraBit IIM42352 module. In the next part, a variable named IIM42352_Module of the GebraBit_IIM42352 structure type (this structure is in the GebraBit_IIM42352 header and is explained in the GebraBit_IIM42352 library description section) is defined for the configuration of the GebraBit IIM42352 module:

				
					/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
GebraBit_IIM42352 IIM42352_Module;
/* USER CODE END PTD */

				
			

In the next part of the written code, the configuration and settings of the GebraBit IIM42352 module are done by using the “IIM42352_Module” structure . finally, the GebraBit IIM42352 module is configured  by referencing the IIM42352_Module structure to the arguments of the GB_IIM42352_initialize() and GB_IIM42352_Configuration() functions:

				
						GB_IIM42352_initialize( &IIM42352_Module );
	GB_IIM42352_Configuration(&IIM42352_Module ,FIFO_ENABLE);
             //GB_IIM42352_Configuration(&IIM42352_Module , FIFO_DISABLE );

				
			

at last, in the “while” part of the program, the values of GebraBit IIM42352 module temperature  and 3 axes (X, Y, Z)  are received continuously:

				
					GB_IIM42352_Get_Data( &IIM42352_Module , FROM_FIFO );
//GB_IIM42352_Get_Data(  &IIM42352_Module , FROM_REGISTER  );

				
			

By removing the GB_IIM42352_Configuration(&IIM42352_Module , FIFO_DISABLE ); and GB_IIM42352_Get_Data( &IIM42352_Module , FROM_REGISTER ) functions; Data values can be read directly from the data registers.

The “main.c” file code text:

				
					/* USER CODE BEGIN Header */
/*
 * ________________________________________________________________________________________________________
 * Copyright (c) 2020 GebraBit Inc. All rights reserved.
 *
 * This software, related documentation and any modifications thereto (collectively “Software”) is subject
 * to GebraBit and its licensors' intellectual property rights under U.S. and international copyright
 * and other intellectual property rights laws. 
 *
 * GebraBit and its licensors retain all intellectual property and proprietary rights in and to the Software
 * and any use, reproduction, disclosure or distribution of the Software without an express license agreement
 * from GebraBit is strictly prohibited.
 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT 
 * NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT IN  
 * NO EVENT SHALL GebraBit BE LIABLE FOR ANY DIRECT, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL DAMAGES, 
 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
 * OF THE SOFTWARE.
 * ________________________________________________________________________________________________________
 */
/**
  ******************************************************************************
  * @file           : main.c
  * @brief          : Main program body
  ******************************************************************************
  * @attention
  *
  * Copyright (c) 2022 STMicroelectronics.
  * All rights reserved.
  *
  * This software is licensed under terms that can be found in the LICENSE file
  * in the root directory of this software component.
  * If no LICENSE file comes with this software, it is provided AS-IS.
  *
  ******************************************************************************
  */
/* USER CODE END Header */
/* Includes ------------------------------------------------------------------*/
#include "main.h"
//#include "i2c.h"
#include "spi.h"
#include "gpio.h"
#include "GebraBit_IIM42352.h"
/* Private includes ----------------------------------------------------------*/
/* USER CODE BEGIN Includes */
 
/* USER CODE END Includes */
 
/* Private typedef -----------------------------------------------------------*/
/* USER CODE BEGIN PTD */
GebraBit_IIM42352 IIM42352_Module;
/* USER CODE END PTD */
 
/* Private define ------------------------------------------------------------*/
/* USER CODE BEGIN PD */
/* USER CODE END PD */
 
/* Private macro -------------------------------------------------------------*/
/* USER CODE BEGIN PM */
 
/* USER CODE END PM */
 
/* Private variables ---------------------------------------------------------*/
 
/* USER CODE BEGIN PV */
/* USER CODE END PV */
 
/* Private function prototypes -----------------------------------------------*/
void SystemClock_Config(void);
/* USER CODE BEGIN PFP */
 
/* USER CODE END PFP */
 
/* Private user code ---------------------------------------------------------*/
/* USER CODE BEGIN 0 */
 
/* USER CODE END 0 */
 
/**
  * @brief  The application entry point.
  * @retval int
  */
int main(void)
{
  /* USER CODE BEGIN 1 */
  /* USER CODE END 1 */
 
  /* MCU Configuration--------------------------------------------------------*/
 
  /* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
 
  /* USER CODE BEGIN Init */
  
  /* USER CODE END Init */
 
  /* Configure the system clock */
  SystemClock_Config();
 
  /* USER CODE BEGIN SysInit */
 
  /* USER CODE END SysInit */
 
  /* Initialize all configured peripherals */
  MX_GPIO_Init();
  //MX_I2C1_Init();
  MX_SPI1_Init();
	GB_IIM42352_initialize( &IIM42352_Module );
	GB_IIM42352_Configuration(&IIM42352_Module ,FIFO_ENABLE );
	//GB_IIM42352_Configuration(&IIM42352_Module , FIFO_DISABLE );
  /* USER CODE END 2 */
  /* Infinite loop */
  /* USER CODE BEGIN WHILE */
 
  while (1)
  {
 
    /* USER CODE END WHILE */
    /* USER CODE BEGIN 3 */
				GB_IIM42352_Get_Data(  &IIM42352_Module , FROM_FIFO  );
		    //GB_IIM42352_Get_Data(  &IIM42352_Module , FROM_REGISTER  );
  }
  /* USER CODE END 3 */
}
 
/**
  * @brief System Clock Configuration
  * @retval None
  */
void SystemClock_Config(void)
{
  RCC_OscInitTypeDef RCC_OscInitStruct = {0};
  RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
  RCC_PeriphCLKInitTypeDef PeriphClkInit = {0};
 
  /** Initializes the RCC Oscillators according to the specified parameters
  * in the RCC_OscInitTypeDef structure.
  */
  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
  RCC_OscInitStruct.HSEState = RCC_HSE_ON;
  RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1;
  RCC_OscInitStruct.HSIState = RCC_HSI_ON;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
  RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
  RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9;
  if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
  {
    Error_Handler();
  }
 
  /** Initializes the CPU, AHB and APB buses clocks
  */
  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
                              |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
 
  if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
  {
    Error_Handler();
  }
  PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_I2C1;
  PeriphClkInit.I2c1ClockSelection = RCC_I2C1CLKSOURCE_SYSCLK;
  if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK)
  {
    Error_Handler();
  }
}
 
/* USER CODE BEGIN 4 */
 
/* USER CODE END 4 */
 
/**
  * @brief  This function is executed in case of error occurrence.
  * @retval None
  */
void Error_Handler(void)
{
  /* USER CODE BEGIN Error_Handler_Debug */
  /* User can add his own implementation to report the HAL error return state */
  __disable_irq();
  while (1)
  {
  }
  /* USER CODE END Error_Handler_Debug */
}
 
#ifdef  USE_FULL_ASSERT
/**
  * @brief  Reports the name of the source file and the source line number
  *         where the assert_param error has occurred.
  * @param  file: pointer to the source file name
  * @param  line: assert_param error line source number
  * @retval None
  */
void assert_failed(uint8_t *file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
     ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */
}
#endif /* USE_FULL_ASSERT */

				
			

Program output

After generating the Keil project using STM32CubeMX and adding the library, we connect the STLINK V2 programmer to the GebraBit STM32F303 using the STLINKV2 adapter:

STLINKV2 adapter:

By connecting the STLINK V2 programmer to the GebraBit STM32F303, there is no need to apply power to the GebraBit STM32F303 and GebraBit IIM42352 modules, because they receive their supply voltage directly from the STLINK V2 programmer.

finally, enter the “Debug” mode and by adding the “IIM42352_Module” to the “watch” window and running  the program, we can see the changes of temperature and the GebraBit IIM42352 module values  in the 3 axes( X, Y, Z) directly from the data registers and FIFO :

Receiving sensor data directly from data registers:

Receiving sensor data from FIFO:

In the following, you can download the “GebraBit IIM42352 module setup project” using the GebraBit STM32F303 module in the Keil environment, the “STM32CubeMX file”, the schematic of the modules and the “IIM42352 datasheet”.

program output video

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