LIS2DTW12 Read data continuous @ dataRate 25Hz, High-Resolution mode. ERROR

[Aishwarya]

Device Reset after every data conversion

Value of all CTRL registers = Power On RESET value

device initialization steps

• power on
• delay 20 ms
• read device id
• reset device
• delay 5 ms
• write CTRL1 0x30
• write CTRL2 0x0C
• write CTRL6 0x60

Read samples in polling mode

[Eleon BORLINI · Accepted solution]

Hi @Aishwarya​ ,

which kind of error are you facing? Communication (SPI or I2C) error or dataout error?

I'm afraid there is something wrong with the IF_ADD_INC bit configuration in register CTRL2 (21h)... can you please try with setting this bit to 0?

Btw, I suggest you to check if your configuration is OK on the LIS2DTW12 C-examples on Github, especially the lis2dtw12_read_data_polling.c file.

/*  Enable Block Data Update */
  lis2dtw12_block_data_update_set(&dev_ctx, PROPERTY_ENABLE);
 
  /* Set full scale */ 
  lis2dtw12_full_scale_set(&dev_ctx, LIS2DTW12_8g);
 
  /* Configure filtering chain
   *
   * Accelerometer - filter path / bandwidth */ 
  lis2dtw12_filter_path_set(&dev_ctx, LIS2DTW12_LPF_ON_OUT);
  lis2dtw12_filter_bandwidth_set(&dev_ctx, LIS2DTW12_ODR_DIV_4);
 
  /* Configure power mode */   
  //lis2dtw12_power_mode_set(&dev_ctx, LIS2DTW12_HIGH_PERFORMANCE);
  lis2dtw12_power_mode_set(&dev_ctx, LIS2DTW12_CONT_LOW_PWR_LOW_NOISE_12bit);
 
  /* Set Output Data Rate */
  lis2dtw12_data_rate_set(&dev_ctx, LIS2DTW12_XL_ODR_25Hz);

-Eleon

[Aishwarya]

Thanks

Eleon BORLINI

yes this is a problem of IF_ADD_INC bit configuration