How to initialise a LSM6DSRX sensor ?

[LARBE.1]

Hello,

I am trying to implement a simple program on my STM32 NUCLEO F302R8, that reads data from a LSM6DSRX iNemo module (STEVAL MKI195V1) throught a NUCLEO-IKS01A2 extension board, and stores it in flash memory.

I am unable to find any kind of documentation, or code example for sensor reading using the lsd6dsrx library ('lsd6dsrx.h' file). For the time being I am using this structure but it lends me to an  "Hard fault interrupt" that I don't know how to resolve.

If you could provide me an example of code using this captor it would be great.

For the record, I am currently initializing my captor this way :

/*USER CODE BEGIN 2*/
 
 
 
LSM6DSRX_Object_t gyro ;
 
if ( LSM6DSRX_Init(&gyro) == LSM6DSRX_OK){
 
	LSM6DSRX_GYRO_Enable(&gyro);
 
}
 

Thank you in advance. 

[Eleon BORLINI]

Hi @Loïc ARBEZ​ ,

I suggest you to check the C drivers on Github, in particular the lsm6dsrx_read_data_polling.c one.

A standard procedure for the initialization that enables the device to produce data can be the following one:

 /* Disable I3C interface */
  lsm6dsrx_i3c_disable_set(&dev_ctx, LSM6DSRX_I3C_DISABLE);
  /* Enable Block Data Update */
  lsm6dsrx_block_data_update_set(&dev_ctx, PROPERTY_ENABLE);
  /* Set Output Data Rate */
  lsm6dsrx_xl_data_rate_set(&dev_ctx, LSM6DSRX_XL_ODR_12Hz5);
  lsm6dsrx_gy_data_rate_set(&dev_ctx, LSM6DSRX_GY_ODR_12Hz5);
  /* Set full scale */
  lsm6dsrx_xl_full_scale_set(&dev_ctx, LSM6DSRX_2g);
  lsm6dsrx_gy_full_scale_set(&dev_ctx, LSM6DSRX_2000dps);
  /* Configure filtering chain(No aux interface) Accelerometer - LPF1 + LPF2 path*/
  lsm6dsrx_xl_hp_path_on_out_set(&dev_ctx, LSM6DSRX_LP_ODR_DIV_100);
  lsm6dsrx_xl_filter_lp2_set(&dev_ctx, PROPERTY_ENABLE);

The drivers defining functions and registers are here lsm6dsrx_reg.h.

-Eleon

[LARBE.1]

Hi @Eleon BORLINI​ , Thanks for your answer.

It served me well.

For the record, the problem i had was that I had not initialized the Ctx substructure contained in LSM6DSRX_Object_t because of that it was not able to read any registers.