Solved
lis2dh12 returns constant data using STMems driver read data polling
I have several boards with lis2dh12 and all of them keeps return constant data for lis2dw12_acceleration_raw_get function, every board has its own constant, 0x5050, 0xe0e0, 0x7070.
I tried using the STEVAL-MKI135V1 connected to STM3220G-EVAL to test maybe our implementation and board design is the problem, but the same happens, it returns constant 0x6060.
We also have some boards that we use lis2dw12 instead, everything else is exactly the same, and it works great with the drivers for this sensor.
Here is the code for init and for reading data:
void Accelerometer_Init(void)
{
lis2dw12_device_id_get(&dev_ctx, &whoamI);
if (whoamI == LIS2DW12_ID)
{
/* Restore default configuration */
// lis2dw12_reset_set(&dev_ctx, PROPERTY_ENABLE);
// do {
// lis2dw12_reset_get(&dev_ctx, &rst);
// } while (rst);
/* Enable Block Data Update */
lis2dw12_block_data_update_set(&dev_ctx, PROPERTY_ENABLE);
/* Set full scale */
//lis2dw12_full_scale_set(&dev_ctx, LIS2DW12_8g);
lis2dw12_full_scale_set(&dev_ctx, LIS2DW12_2g);
/* Configure filtering chain
* Accelerometer - filter path / bandwidth
*/
lis2dw12_filter_path_set(&dev_ctx, LIS2DW12_LPF_ON_OUT);
lis2dw12_filter_bandwidth_set(&dev_ctx, LIS2DW12_ODR_DIV_4);
/* Configure power mode */
lis2dw12_power_mode_set(&dev_ctx, LIS2DW12_HIGH_PERFORMANCE);
//lis2dw12_power_mode_set(&dev_ctx, LIS2DW12_CONT_LOW_PWR_LOW_NOISE_12bit);
/* Set Output Data Rate */
lis2dw12_data_rate_set(&dev_ctx, LIS2DW12_XL_ODR_25Hz);
}
else if(whoamI == LIS2DH12_ID)
{
/* Enable Block Data Update. */
lis2dh12_block_data_update_set(&dev_ctx, PROPERTY_ENABLE);
/* Set Output Data Rate to 1Hz. */
lis2dh12_data_rate_set(&dev_ctx, LIS2DH12_ODR_25Hz);
/* Set full scale to 2g. */
lis2dh12_full_scale_set(&dev_ctx, LIS2DH12_2g);
// /* Enable temperature sensor. */
// lis2dh12_temperature_meas_set(&dev_ctx, LIS2DH12_TEMP_ENABLE);
/* Set device in continuous mode with 12 bit resol. */
lis2dh12_operating_mode_set(&dev_ctx, LIS2DH12_HR_12bit);
}
}
int Accelerometer_Get_Data(void)
{ /* Read samples in polling mode (no int) */
uint8_t reg;
int16_t data_raw_acceleration[3];
for (uint8_t i=0; i<3; i++)
prev_acc[i] = acceleration_mg[i];
if (whoamI == LIS2DW12_ID)
{
/* Read output only if new value is available */
lis2dw12_flag_data_ready_get(&dev_ctx, ®);
if (reg)
{
/* Read acceleration data */
memset(data_raw_acceleration, 0x00, 3 * sizeof(int16_t));
lis2dw12_acceleration_raw_get(&dev_ctx, data_raw_acceleration);
//acceleration_mg[0] = lis2dw12_from_fs8_lp1_to_mg(data_raw_acceleration[0]);
//acceleration_mg[1] = lis2dw12_from_fs8_lp1_to_mg(data_raw_acceleration[1]);
//acceleration_mg[2] = lis2dw12_from_fs8_lp1_to_mg(data_raw_acceleration[2]);
acceleration_mg[0] = lis2dw12_from_fs2_to_mg(data_raw_acceleration[0]);
acceleration_mg[1] = lis2dw12_from_fs2_to_mg(data_raw_acceleration[1]);
acceleration_mg[2] = lis2dw12_from_fs2_to_mg(data_raw_acceleration[2]);
}
}
else if(whoamI == LIS2DH12_ID)
{
/* Read output only if new value available */
lis2dh12_xl_data_ready_get(&dev_ctx, ®);
if (reg) {
/* Read accelerometer data */
memset(data_raw_acceleration, 0x00, 3 * sizeof(int16_t));
lis2dh12_acceleration_raw_get(&dev_ctx, data_raw_acceleration);
acceleration_mg[0] = lis2dh12_from_fs2_hr_to_mg(data_raw_acceleration[0]);
acceleration_mg[1] = lis2dh12_from_fs2_hr_to_mg(data_raw_acceleration[1]);
acceleration_mg[2] = lis2dh12_from_fs2_hr_to_mg(data_raw_acceleration[2]);
}
return 0;
}
Any help or tips will be appreciated.
Thanks in advance.