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bmp5.c
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bmp5.c
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/**
* Copyright (c) 2022 Bosch Sensortec GmbH. All rights reserved.
*
* BSD-3-Clause
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* @file bmp5.c
* @date 2022-08-11
* @version v1.1.1
*
*/
/***************************************************************************/
/*! Header files
****************************************************************************/
#include "bmp5.h"
/***************************************************************************/
/*! Global Variable
****************************************************************************/
/******************************************************************************/
/*! Local Function Prototypes
******************************************************************************/
/*!
* @brief This internal API is used to validate the device pointer for
* null conditions.
*
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t null_ptr_check(const struct bmp5_dev *dev);
/*!
* @brief This internal API is used to validate the chip id of the sensor.
*
* @param[in] chip_id : Variable that hold the chip id from register.
* @param[in,out] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t validate_chip_id(uint8_t chip_id, struct bmp5_dev *dev);
/*!
* @brief This internal API is used to validate the post power-up procedure.
*
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t power_up_check(struct bmp5_dev *dev);
/*!
* @brief This internal API is used to check if sensor is in deepstandby mode.
*
* @param[out] powermode : To store whether sensor is in deepstanby mode.
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t check_deepstandby_mode(enum bmp5_powermode *powermode, struct bmp5_dev *dev);
/*!
* @brief This internal API is used to set sensor in deep standby powermode.
*
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t set_deep_standby_mode(struct bmp5_dev *dev);
/*!
* @brief This internal API is used to set sensor in standby or
* normal or forced or continous powermode.
*
* @param[in] powermode : Select desired powermode.
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t set_power_mode(enum bmp5_powermode powermode, struct bmp5_dev *dev);
/*!
* @brief This internal API is used to set sensor in standby powermode when powermode is deepstandby mode.
*
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t set_standby_mode(struct bmp5_dev *dev);
#ifdef BMP5_USE_FIXED_POINT
/*!
* @brief This internal API is used to calculate the power of a value.
*
* @param[in] base : Base for power calculation.
* @param[in] resolution : Exponent for power calculation.
*
* @return the calculated power
* @retval the power value
*/
static uint32_t power(uint8_t base, uint8_t resolution);
#endif
/*!
* @brief This internal API is used to set the IIR for temperature and pressure.
*
* @param[in] iir_cfg : Structure instance of bmp5_iir_config.
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t set_iir_config(const struct bmp5_iir_config *iir_cfg, struct bmp5_dev *dev);
/*!
* @brief This internal API is used to set fifo threshold based on the frame type selected.
*
* @param[in,out] reg_data : Stores the register data.
* @param[in] fifo : Structure instance of bmp5_fifo.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t set_fifo_threshold(uint8_t *reg_data, const struct bmp5_fifo *fifo);
/*!
* @brief This internal API sets the configuration for IIR of fifo.
*
* @param[in] set_fifo_iir_t : Variable to store the fifo IIR value for temperature.
* @param[in] set_fifo_iir_p : Variable to store the fifo IIR value for pressure.
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t set_fifo_iir_config(uint8_t set_fifo_iir_t, uint8_t set_fifo_iir_p, struct bmp5_dev *dev);
/*!
* @brief This internal API is used to unpack the fifo data and store it in the bmp5_sensor_data structure.
*
* @param[out] sensor_data : Stores the pressure and temperature data in bmp5_sensor_data structure.
* @param[in,out] data_index : Contains the beginning of set of bytes parsed to unpack.
* @param[in] fifo : Structure instance of bmp5_fifo.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t unpack_sensor_data(struct bmp5_sensor_data *sensor_data,
uint16_t *data_index,
const struct bmp5_fifo *fifo);
/*!
* @brief This internal API sets the IIR configuration and count limit of OOR pressure.
*
* @param[in] set_oor_iir_p : Variable to store the OOR IIR value for pressure.
* @param[in] set_count_limit : Variable to store the OOR count limit value for pressure.
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t set_oor_iir_count_limit(uint8_t set_oor_iir_p, uint8_t set_count_limit, struct bmp5_dev *dev);
/*!
* @brief This internal API is used to read the nvm data.
*
* @param[out] nvm_data : Variable to store nvm data.
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t get_nvm_data(uint16_t *nvm_data, struct bmp5_dev *dev);
/*!
* @brief This internal API is used to get the nvm status (NVM ready interrupt, NVM error interrupt
* and NVM command error interrupt).
*
* @param[out] nvm_status : Variable to store nvm status.
* @param[in] dev : Structure instance of bmp5_dev.
*
* @note : Below are values of nvm_status possible.
*
* nvm_status | Functionality
* ---------------------|----------------------------
* BMP5_INT_NVM_RDY | NVM ready status
* BMP5_INT_NVM_ERR | NVM error status
* BMP5_NVM_CMD_ERR | NVM command error status
*
* @return Result of API execution status.
* @return 0 -> Success
* @return < 0 -> Fail
*/
static int8_t get_nvm_status(uint8_t *nvm_status, struct bmp5_dev *dev);
/*!
* @brief This internal API is used to write the nvm address and prog_en.
*
* @param[out] nvm_addr : Variable that holds the nvm address.
* @param[in] prog_en : Variable that holds the prog_en value.
* @param[in,out] curr_pwrmode : Stores current powermode.
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t nvm_write_addr(uint8_t nvm_addr, uint8_t prog_en, enum bmp5_powermode *curr_pwrmode,
struct bmp5_dev *dev);
/*!
* @brief This internal API is used to set the nvm address and prog_enable based on NVM read/write selected.
*
* @param[out] nvm_addr : Variable that holds the nvm address.
* @param[in] prog_en : Variable that holds the prog_en value.
* @param[in] dev : Structure instance of bmp5_dev.
*
* @return Result of API execution status
* @retval 0 -> Success
* @retval <0 -> Fail
*/
static int8_t set_nvm_addr(uint8_t nvm_addr, uint8_t prog_en, struct bmp5_dev *dev);
/***************************************************************************/
/*! Local Function Definitions
****************************************************************************/
/*!
* @brief This API is the entry point.
* It performs the selection of I2C/I3C/SPI read mechanism according to the
* selected interface and reads the chip-id of the sensor.
*/
int8_t bmp5_init(struct bmp5_dev *dev)
{
int8_t rslt;
uint8_t reg_data;
uint8_t chip_id;
/* Check for null pointer in the device structure */
rslt = null_ptr_check(dev);
if (rslt == BMP5_OK)
{
dev->chip_id = 0;
if (dev->intf == BMP5_SPI_INTF)
{
/* Performing a single read via SPI of registers,
* e.g. registers CHIP_ID, before the actual
* SPI communication with the device.
*/
rslt = bmp5_get_regs(BMP5_REG_CHIP_ID, ®_data, 1, dev);
}
if (rslt == BMP5_OK)
{
/* Read chip_id */
rslt = bmp5_get_regs(BMP5_REG_CHIP_ID, &chip_id, 1, dev);
if (rslt == BMP5_OK)
{
if (chip_id != 0)
{
/* Validate post power-up procedure */
rslt = power_up_check(dev);
}
else
{
rslt = BMP5_E_INVALID_CHIP_ID;
}
if (rslt == BMP5_OK)
{
rslt = validate_chip_id(chip_id, dev);
}
}
}
}
return rslt;
}
/*!
* @brief This API reads the data from the given register address of the sensor.
*/
int8_t bmp5_get_regs(uint8_t reg_addr, uint8_t *reg_data, uint32_t len, struct bmp5_dev *dev)
{
int8_t rslt;
/* Check for null pointer in the device structure */
rslt = null_ptr_check(dev);
/* Proceed if null check is fine */
if ((rslt == BMP5_OK) && (reg_data != NULL))
{
if (dev->intf == BMP5_SPI_INTF)
{
/* If interface selected is SPI */
reg_addr = reg_addr | BMP5_SPI_RD_MASK;
}
/* Read the data from the reg_addr */
dev->intf_rslt = dev->read(reg_addr, reg_data, len, dev->intf_ptr);
if (dev->intf_rslt != BMP5_INTF_RET_SUCCESS)
{
/* Failure case */
rslt = BMP5_E_COM_FAIL;
}
}
else
{
rslt = BMP5_E_NULL_PTR;
}
return rslt;
}
/*!
* @brief This API writes the given data to the register address
* of the sensor.
*/
int8_t bmp5_set_regs(uint8_t reg_addr, const uint8_t *reg_data, uint32_t len, struct bmp5_dev *dev)
{
int8_t rslt;
uint8_t idx = 0;
/* Check for null pointer in the device structure */
rslt = null_ptr_check(dev);
/* Proceed if null check is fine */
if ((rslt == BMP5_OK) && (reg_data != NULL))
{
if (dev->intf == BMP5_SPI_INTF)
{
/* Write the data to the reg_addr */
do
{
dev->intf_rslt = dev->write((reg_addr + idx), ®_data[idx], 1, dev->intf_ptr);
idx++;
} while ((idx < len) && (dev->intf_rslt == BMP5_INTF_RET_SUCCESS));
}
else if ((dev->intf == BMP5_I2C_INTF) || (dev->intf == BMP5_I3C_INTF))
{
/* Write the data to the reg_addr */
dev->intf_rslt = dev->write(reg_addr, reg_data, len, dev->intf_ptr);
}
if (dev->intf_rslt != BMP5_INTF_RET_SUCCESS)
{
/* Failure case */
rslt = BMP5_E_COM_FAIL;
}
}
else
{
rslt = BMP5_E_NULL_PTR;
}
return rslt;
}
/*!
* @brief This API performs the soft reset of the sensor.
*/
int8_t bmp5_soft_reset(struct bmp5_dev *dev)
{
int8_t rslt;
uint8_t reg_data;
uint8_t por_status;
uint8_t data = BMP5_SOFT_RESET_CMD;
/* Reset the device */
rslt = bmp5_set_regs(BMP5_REG_CMD, &data, 1, dev);
if (rslt == BMP5_OK)
{
/* Soft-reset execution takes 2 ms */
dev->delay_us(BMP5_DELAY_US_SOFT_RESET, dev->intf_ptr);
if (dev->intf == BMP5_SPI_INTF)
{
/* Performing a single read via SPI of registers,
* e.g. registers CHIP_ID, before the actual
* SPI communication with the device.
*/
rslt = bmp5_get_regs(BMP5_REG_CHIP_ID, ®_data, 1, dev);
}
if (rslt == BMP5_OK)
{
rslt = bmp5_get_interrupt_status(&por_status, dev);
if (rslt == BMP5_OK)
{
if (por_status & BMP5_INT_ASSERTED_POR_SOFTRESET_COMPLETE)
{
rslt = BMP5_OK;
}
else
{
rslt = BMP5_E_POR_SOFTRESET;
}
}
}
}
return rslt;
}
/*!
* @brief This API is used to get interrupt status.
*/
int8_t bmp5_get_interrupt_status(uint8_t *int_status, struct bmp5_dev *dev)
{
int8_t rslt;
if (int_status != NULL)
{
rslt = bmp5_get_regs(BMP5_REG_INT_STATUS, int_status, 1, dev);
}
else
{
rslt = BMP5_E_NULL_PTR;
}
return rslt;
}
/*!
* @brief This API is used to get powermode of the sensor.
*/
int8_t bmp5_get_power_mode(enum bmp5_powermode *powermode, struct bmp5_dev *dev)
{
int8_t rslt;
uint8_t deep_dis;
uint8_t reg_data;
uint8_t pwrmode;
if (powermode != NULL)
{
/* Read the power mode register */
rslt = bmp5_get_regs(BMP5_REG_ODR_CONFIG, ®_data, 1, dev);
if (rslt == BMP5_OK)
{
pwrmode = BMP5_GET_BITS_POS_0(reg_data, BMP5_POWERMODE);
switch (pwrmode)
{
case BMP5_POWERMODE_STANDBY:
/* Getting deep disable status */
deep_dis = BMP5_GET_BITSLICE(reg_data, BMP5_DEEP_DISABLE);
/* Checking deepstandby status only when powermode is in standby mode */
/* If deep_dis = 0(BMP5_DEEP_ENABLED) then deepstandby mode is enabled.
* If deep_dis = 1(BMP5_DEEP_DISABLED) then deepstandby mode is disabled
*/
if (deep_dis == BMP5_DEEP_ENABLED)
{
rslt = check_deepstandby_mode(powermode, dev);
}
else
{
*powermode = BMP5_POWERMODE_STANDBY;
}
break;
case BMP5_POWERMODE_NORMAL:
*powermode = BMP5_POWERMODE_NORMAL;
break;
case BMP5_POWERMODE_FORCED:
*powermode = BMP5_POWERMODE_FORCED;
break;
case BMP5_POWERMODE_CONTINOUS:
*powermode = BMP5_POWERMODE_CONTINOUS;
break;
default:
rslt = BMP5_E_INVALID_POWERMODE;
break;
}
}
}
else
{
rslt = BMP5_E_NULL_PTR;
}
return rslt;
}
/*!
* @brief This API is used to set powermode of the sensor.
*/
int8_t bmp5_set_power_mode(enum bmp5_powermode powermode, struct bmp5_dev *dev)
{
int8_t rslt;
enum bmp5_powermode lst_pwrmode;
/* Existing power mode of the device is received in lst_pwrmode */
rslt = bmp5_get_power_mode(&lst_pwrmode, dev);
if (rslt == BMP5_OK)
{
/* If the sensor is not in standby mode set the device to
* standby mode.
*/
if (lst_pwrmode != BMP5_POWERMODE_STANDBY)
{
/* Device should be set to standby before transiting to
* forced mode or normal mode or continous mode.
*/
rslt = set_power_mode(BMP5_POWERMODE_STANDBY, dev);
if (rslt == BMP5_OK)
{
/* Give t_standby(as per data sheet) time for device to go into standby mode */
dev->delay_us(BMP5_DELAY_US_STANDBY, dev->intf_ptr);
}
}
/* Set the desired power mode */
if (rslt == BMP5_OK)
{
switch (powermode)
{
case BMP5_POWERMODE_DEEP_STANDBY:
rslt = set_deep_standby_mode(dev);
break;
case BMP5_POWERMODE_STANDBY:
/* Since switching between powermodes require sensor to be in standby mode
* it is performed above. So it is not explicitly performed here.
*/
break;
case BMP5_POWERMODE_NORMAL:
case BMP5_POWERMODE_FORCED:
case BMP5_POWERMODE_CONTINOUS:
rslt = set_power_mode(powermode, dev);
break;
default:
rslt = BMP5_E_INVALID_POWERMODE;
break;
}
}
}
return rslt;
}
/*!
* @brief This API reads the temperature(deg C) or both pressure(Pa) and temperature(deg C) data from the
* sensor and store it in the bmp5_sensor_data structure instance passed by the user.
*/
int8_t bmp5_get_sensor_data(struct bmp5_sensor_data *sensor_data,
const struct bmp5_osr_odr_press_config *osr_odr_press_cfg,
struct bmp5_dev *dev)
{
int8_t rslt;
uint8_t reg_data[6] = { 0 };
int32_t raw_data_t;
uint32_t raw_data_p;
rslt = bmp5_get_regs(BMP5_REG_TEMP_DATA_XLSB, reg_data, 6, dev);
if (rslt == BMP5_OK)
{
raw_data_t = (int32_t) ((int32_t) ((uint32_t)(((uint32_t)reg_data[2] << 16) | ((uint16_t)reg_data[1] << 8) | reg_data[0]) << 8) >> 8);
#ifdef BMP5_USE_FIXED_POINT
/* Division by 2^16(whose equivalent value is 65536) is performed to get temperature data and followed by fixed point digit
* precision in deg C
*/
sensor_data->temperature =
(int64_t)((raw_data_t / (float)65536.0) * (power(10, BMP5_FIXED_POINT_DIGIT_PRECISION)));
#else
/* Division by 2^16(whose equivalent value is 65536) is performed to get temperature data in deg C */
sensor_data->temperature = (float)(raw_data_t / 65536.0);
#endif
if (osr_odr_press_cfg->press_en == BMP5_ENABLE)
{
raw_data_p = (uint32_t)((uint32_t)(reg_data[5] << 16) | (uint16_t)(reg_data[4] << 8) | reg_data[3]);
#ifdef BMP5_USE_FIXED_POINT
/* Division by 2^6(whose equivalent value is 64) is performed to get pressure data and followed by fixed point digit
* precision in Pa
*/
sensor_data->pressure =
(uint64_t)((raw_data_p / (float)64.0) * (power(10, BMP5_FIXED_POINT_DIGIT_PRECISION)));
#else
/* Division by 2^6(whose equivalent value is 64) is performed to get pressure data in Pa */
sensor_data->pressure = (float)(raw_data_p / 64.0);
#endif
}
else
{
sensor_data->pressure = 0.0;
}
}
return rslt;
}
/*!
* @brief This API is used to enable the interrupts(drdy interrupt, fifo full interrupt,
* fifo threshold enable and pressure data out of range interrupt).
*/
int8_t bmp5_int_source_select(const struct bmp5_int_source_select *int_source_select, struct bmp5_dev *dev)
{
int8_t rslt;
uint8_t reg_data;
if (int_source_select != NULL)
{
rslt = bmp5_get_regs(BMP5_REG_INT_SOURCE, ®_data, 1, dev);
if (rslt == BMP5_OK)
{
reg_data = BMP5_SET_BITS_POS_0(reg_data, BMP5_INT_DRDY_EN, int_source_select->drdy_en);
reg_data = BMP5_SET_BITSLICE(reg_data, BMP5_INT_FIFO_FULL_EN, int_source_select->fifo_full_en);
reg_data = BMP5_SET_BITSLICE(reg_data, BMP5_INT_FIFO_THRES_EN, int_source_select->fifo_thres_en);
reg_data = BMP5_SET_BITSLICE(reg_data, BMP5_INT_OOR_PRESS_EN, int_source_select->oor_press_en);
rslt = bmp5_set_regs(BMP5_REG_INT_SOURCE, ®_data, 1, dev);
}
}
else
{
rslt = BMP5_E_NULL_PTR;
}
return rslt;
}
/*!
* @brief This API is used to configure the interrupt settings.
*/
int8_t bmp5_configure_interrupt(enum bmp5_intr_mode int_mode,
enum bmp5_intr_polarity int_pol,
enum bmp5_intr_drive int_od,
enum bmp5_intr_en_dis int_en,
struct bmp5_dev *dev)
{
/* Variable to store the function result */
int8_t rslt;
/* Variable to get interrupt configuration */
uint8_t reg_data = 0;
/* Variable to set interrupt source */
uint8_t int_source = 0;
/* Variable to get interrupt status */
uint8_t int_status = 0;
/* Get interrupt configuration */
rslt = bmp5_get_regs(BMP5_REG_INT_CONFIG, ®_data, 1, dev);
if (rslt == BMP5_OK)
{
/* Any change between latched/pulsed mode has to be applied while interrupt is disabled */
/* Step 1 : Turn off all INT sources (INT_SOURCE -> 0x00) */
rslt = bmp5_set_regs(BMP5_REG_INT_SOURCE, &int_source, 1, dev);
if (rslt == BMP5_OK)
{
/* Step 2 : Read the INT_STATUS register to clear the status */
rslt = bmp5_get_regs(BMP5_REG_INT_STATUS, &int_status, 1, dev);
if (rslt == BMP5_OK)
{
/* Step 3 : Set the desired mode in INT_CONFIG.int_mode */
reg_data = BMP5_SET_BITS_POS_0(reg_data, BMP5_INT_MODE, int_mode);
reg_data = BMP5_SET_BITSLICE(reg_data, BMP5_INT_POL, int_pol);
reg_data = BMP5_SET_BITSLICE(reg_data, BMP5_INT_OD, int_od);
reg_data = BMP5_SET_BITSLICE(reg_data, BMP5_INT_EN, int_en);
/* Finally transfer the interrupt configurations */
rslt = bmp5_set_regs(BMP5_REG_INT_CONFIG, ®_data, 1, dev);
}
}
}
return rslt;
}
/*!
* @brief This API gets the configuration for oversampling of temperature, oversampling of
* pressure and ODR configuration along with pressure enable.
*/
int8_t bmp5_get_osr_odr_press_config(struct bmp5_osr_odr_press_config *osr_odr_press_cfg, struct bmp5_dev *dev)
{
/* Variable to store the function result */
int8_t rslt;
/* Variable to store OSR and ODR config */
uint8_t reg_data[2];
if (osr_odr_press_cfg != NULL)
{
/* Get OSR and ODR configuration in burst read */
rslt = bmp5_get_regs(BMP5_REG_OSR_CONFIG, reg_data, 2, dev);
if (rslt == BMP5_OK)
{
osr_odr_press_cfg->osr_t = BMP5_GET_BITS_POS_0(reg_data[0], BMP5_TEMP_OS);
osr_odr_press_cfg->osr_p = BMP5_GET_BITSLICE(reg_data[0], BMP5_PRESS_OS);
osr_odr_press_cfg->press_en = BMP5_GET_BITSLICE(reg_data[0], BMP5_PRESS_EN);
osr_odr_press_cfg->odr = BMP5_GET_BITSLICE(reg_data[1], BMP5_ODR);
}
}
else
{
rslt = BMP5_E_NULL_PTR;
}
return rslt;
}
/*!
* @brief This API sets the configuration for oversampling temperature, oversampling of
* pressure and ODR configuration along with pressure enable.
*
* @note If ODR is set to a value higher than 5Hz then powermode is set as standby mode, as ODR value greater than 5HZ
* without disabling deep-standby mode makes powermode invalid.
*/
int8_t bmp5_set_osr_odr_press_config(const struct bmp5_osr_odr_press_config *osr_odr_press_cfg, struct bmp5_dev *dev)
{
/* Variable to store the function result */
int8_t rslt = 0;
/* Variable to set ODR and OSR config */
uint8_t reg_data[2] = { 0 };
if (osr_odr_press_cfg != NULL)
{
/* If ODR is set to a value higher than 5Hz then powermode is set as standby mode, as ODR value greater than 5HZ
* without disabling deep-standby mode makes powermode invalid.
* NOTE: Register value for 5Hz is greater compared to ODRs higher than it. Thus in this below condition odr
* is checked whether less than 5Hz macro.
*/
if (osr_odr_press_cfg->odr < BMP5_ODR_05_HZ)
{
rslt = set_standby_mode(dev);
}
if (rslt == BMP5_OK)
{
rslt = bmp5_get_regs(BMP5_REG_OSR_CONFIG, reg_data, 2, dev);
if (rslt == BMP5_OK)
{
reg_data[0] = BMP5_SET_BITS_POS_0(reg_data[0], BMP5_TEMP_OS, osr_odr_press_cfg->osr_t);
reg_data[0] = BMP5_SET_BITSLICE(reg_data[0], BMP5_PRESS_OS, osr_odr_press_cfg->osr_p);
reg_data[0] = BMP5_SET_BITSLICE(reg_data[0], BMP5_PRESS_EN, osr_odr_press_cfg->press_en);
reg_data[1] = BMP5_SET_BITSLICE(reg_data[1], BMP5_ODR, osr_odr_press_cfg->odr);
/* Set ODR and OSR configuration */
rslt = bmp5_set_regs(BMP5_REG_OSR_CONFIG, reg_data, 2, dev);
}
}
}
else
{
rslt = BMP5_E_NULL_PTR;
}
return rslt;
}
/*!
* @brief This API gets the configuration for IIR of temperature and pressure.
*/
int8_t bmp5_get_iir_config(struct bmp5_iir_config *iir_cfg, struct bmp5_dev *dev)
{
/* Variable to store the function result */
int8_t rslt;
/* Variable to get IIR config */
uint8_t reg_data[2];
if (iir_cfg != NULL)
{
/* Get IIR configuration */
rslt = bmp5_get_regs(BMP5_REG_DSP_CONFIG, reg_data, 2, dev);
iir_cfg->shdw_set_iir_t = BMP5_GET_BITSLICE(reg_data[0], BMP5_SHDW_SET_IIR_TEMP);
iir_cfg->shdw_set_iir_p = BMP5_GET_BITSLICE(reg_data[0], BMP5_SHDW_SET_IIR_PRESS);
iir_cfg->iir_flush_forced_en = BMP5_GET_BITSLICE(reg_data[0], BMP5_IIR_FLUSH_FORCED_EN);
iir_cfg->set_iir_t = BMP5_GET_BITS_POS_0(reg_data[1], BMP5_SET_IIR_TEMP);
iir_cfg->set_iir_p = BMP5_GET_BITSLICE(reg_data[1], BMP5_SET_IIR_PRESS);
}
else
{
rslt = BMP5_E_NULL_PTR;
}
return rslt;
}
/*!
* @brief This API sets the configuration for IIR of temperature and pressure.
*
* @note If IIR value for both temperature and pressure is set a value other than bypass then powermode is set
* as standby mode, as IIR with value other than bypass without disabling deep-standby mode makes powermode invalid.
*/
int8_t bmp5_set_iir_config(const struct bmp5_iir_config *iir_cfg, struct bmp5_dev *dev)
{
/* Variable to store the function result */
int8_t rslt = 0;
/* Variable to store existing powermode */
enum bmp5_powermode curr_pwrmode;
if (iir_cfg != NULL)
{
/* If IIR value for both temperature and pressure is set a value other than bypass then powermode is set
* as standby mode, as IIR with value other than bypass without disabling deep-standby mode makes powermode
* invalid.
*/
if ((iir_cfg->set_iir_t != BMP5_IIR_FILTER_BYPASS) || (iir_cfg->set_iir_p != BMP5_IIR_FILTER_BYPASS))
{
rslt = set_standby_mode(dev);
}
if (rslt == BMP5_OK)
{
rslt = bmp5_get_power_mode(&curr_pwrmode, dev);
if (rslt == BMP5_OK)
{
/* IIR configuration is writable only during STANDBY mode(as per datasheet) */
if (curr_pwrmode != BMP5_POWERMODE_STANDBY)
{
/* If sensor is not in standby mode, set sensor in standby mode */
rslt = bmp5_set_power_mode(BMP5_POWERMODE_STANDBY, dev);
}
if (rslt == BMP5_OK)
{
rslt = set_iir_config(iir_cfg, dev);
}
/* If previous mode is not standbymode return sensor to that previous mode
* after setting iir configuration
*/
if (rslt == BMP5_OK)
{
/* Since IIR works only in standby mode we are not re-writing to deepstandby mode
* as deep standby mode resets the IIR settings to default
*/
if ((curr_pwrmode != BMP5_POWERMODE_STANDBY) && (curr_pwrmode != BMP5_POWERMODE_DEEP_STANDBY))
{
rslt = bmp5_set_power_mode(curr_pwrmode, dev);
}
}
}
}
}
else
{
rslt = BMP5_E_NULL_PTR;
}
return rslt;
}
/*!
* @brief This API gets the configuration for effective OSR of temperature,
* effective OSR of pressure and ODR valid status.
*/
int8_t bmp5_get_osr_odr_eff(struct bmp5_osr_odr_eff *osr_odr_eff, struct bmp5_dev *dev)
{
/* Variable to store the function result */
int8_t rslt;
/* Variable to store effective OSR */
uint8_t reg_data;
if (osr_odr_eff != NULL)
{
/* Get effective OSR configuration and ODR valid status */
rslt = bmp5_get_regs(BMP5_REG_OSR_EFF, ®_data, 1, dev);
if (rslt == BMP5_OK)
{
osr_odr_eff->osr_t_eff = BMP5_GET_BITS_POS_0(reg_data, BMP5_OSR_TEMP_EFF);
osr_odr_eff->osr_p_eff = BMP5_GET_BITSLICE(reg_data, BMP5_OSR_PRESS_EFF);
osr_odr_eff->odr_is_valid = BMP5_GET_BITSLICE(reg_data, BMP5_ODR_IS_VALID);
}
}
else
{
rslt = BMP5_E_NULL_PTR;
}
return rslt;
}
/*!
* @brief This API used to get the configurations of fifo from the sensor.
*/
int8_t bmp5_get_fifo_configuration(struct bmp5_fifo *fifo, struct bmp5_dev *dev)
{
int8_t rslt = 0;
uint8_t reg_data;
if (fifo != NULL)
{
/* Get the fifo congifurations */
rslt = bmp5_get_regs(BMP5_REG_FIFO_CONFIG, ®_data, 1, dev);
if (rslt == BMP5_OK)
{
fifo->threshold = BMP5_GET_BITS_POS_0(reg_data, BMP5_FIFO_THRESHOLD);
fifo->mode = BMP5_GET_BITSLICE(reg_data, BMP5_FIFO_MODE);
rslt = bmp5_get_regs(BMP5_REG_FIFO_SEL, ®_data, 1, dev);
if (rslt == BMP5_OK)
{
fifo->frame_sel = BMP5_GET_BITS_POS_0(reg_data, BMP5_FIFO_FRAME_SEL);
fifo->dec_sel = BMP5_GET_BITSLICE(reg_data, BMP5_FIFO_DEC_SEL);
}
}
if (rslt == BMP5_OK)
{
rslt = bmp5_get_regs(BMP5_REG_DSP_CONFIG, ®_data, 1, dev);
if (rslt == BMP5_OK)
{
fifo->set_fifo_iir_t = BMP5_GET_BITSLICE(reg_data, BMP5_SET_FIFO_IIR_TEMP);
fifo->set_fifo_iir_p = BMP5_GET_BITSLICE(reg_data, BMP5_SET_FIFO_IIR_PRESS);