Hi TBomb.1,
Thank you for the reply.
I followed the same process as per below link from Github:
https://github.com/STMicroelectronics/STMems_Standard_C_drivers/blob/master/lsm6dso_STdC/examples/lsm6dso_sensor_hub_lps22hh.c
I tried to read device ID of LIS2MDL sensor and program get stuck inside below highlighted snippet of "ism330dlc_read_lis2mdl_cx" function and it seems that trigger flag never changed.
static int32_t ism330dlc_read_lis2mdl_cx(void *ctx, uint8_t reg,
uint8_t *data, uint16_t len)
{
ism330dlc_sh_cfg_read_t sh_cfg_read;
int32_t ret;
ism330dlc_func_src1_t master_status;
/* Disable accelerometer. */
ret = ism330dlc_xl_data_rate_set(&ag_ctx, ISM330DLC_XL_ODR_OFF);
if(ret != ISM330DLC_OK)
return ISM330DLC_ERROR;
/* Configure Sensor Hub to read LIS2MDL. */
sh_cfg_read.slv_add = (LIS2MDL_I2C_ADD & 0xFEU) >> 1; /* 7bit I2C address */
sh_cfg_read.slv_subadd = reg;
sh_cfg_read.slv_len = len;
ret = ism330dlc_sh_slv0_cfg_read(&ag_ctx, &sh_cfg_read);
if(ret != ISM330DLC_OK)
return ISM330DLC_ERROR;
/* Configure number of slave connected to master I2C */
ret = ism330dlc_sh_num_of_dev_connected_set(&ag_ctx, ISM330DLC_SLV_0);
if(ret != ISM330DLC_OK)
return ISM330DLC_ERROR;
/* Enable I2C Master. */
ret = ism330dlc_sh_master_set(&ag_ctx, PROPERTY_ENABLE);
if(ret != ISM330DLC_OK)
return ISM330DLC_ERROR;
/* Enable accelerometer to trigger Sensor Hub operation. */
ism330dlc_xl_data_rate_set(&ag_ctx, ISM330DLC_XL_ODR_12Hz5);
if(ret != ISM330DLC_OK)
return ISM330DLC_ERROR;
/* Get XL raw data */
ret = ism330dlc_acceleration_raw_get(&ag_ctx, &data_raw_acceleration.i16bit);
if(ret != ISM330DLC_OK)
return ISM330DLC_ERROR;
/* Wait for XL(trigger) flag set. */
do {
HAL_Delay(20);
ism330dlc_xl_flag_data_ready_get(&ag_ctx, &drdy);
} while (!drdy);
/* Wait Sensor Hub operation flag set. */
do {
HAL_Delay(20);
ism330dlc_read_reg(&ag_ctx, ISM330DLC_FUNC_SRC1, (uint8_t *)&master_status, 1);
} while (!master_status.sensorhub_end_op);
/* Disable I2C master */
ret = ism330dlc_sh_master_set(&ag_ctx, PROPERTY_DISABLE);
if(ret != ISM330DLC_OK)
return ISM330DLC_ERROR;
/* Disable XL(trigger). */
ret = ism330dlc_xl_data_rate_set(&ag_ctx, ISM330DLC_XL_ODR_OFF);
if(ret != ISM330DLC_OK)
return ISM330DLC_ERROR;
/* Read SensorHub registers. */
ret = ism330dlc_read_reg(&ag_ctx, ISM330DLC_SENSORHUB1_REG, data, len);
if(ret != ISM330DLC_OK)
return ISM330DLC_ERROR;
return ret;
}
For your information :
- Evaluation board used : NUCLEO-L4R5-ZI-P
- ISM330DLC sensor used as a master I2C
- LIS2MDL connected as I2C slave.
Kindly suggest further how to read device id and data from LIS2MDL.
regards,
Ankur Patel
