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ilps28qsw_reg.c
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/*
******************************************************************************
* @file ilps28qsw_reg.c
* @author Sensors Software Solution Team
* @brief ILPS28QSW driver file
******************************************************************************
* @attention
*
* <h2><center>© Copyright (c) 2024 STMicroelectronics.
* All rights reserved.</center></h2>
*
* This software component is licensed by ST under BSD 3-Clause license,
* the "License"; You may not use this file except in compliance with the
* License. You may obtain a copy of the License at:
* opensource.org/licenses/BSD-3-Clause
*
******************************************************************************
*/
#include "ilps28qsw_reg.h"
/**
* @defgroup ILPS28QSW
* @brief This file provides a set of functions needed to drive the
* ilps28qsw nano pressure sensor.
* @{
*
*/
/**
* @defgroup Interfaces_Functions
* @brief This section provide a set of functions used to read and
* write a generic register of the device.
* MANDATORY: return 0 -> no Error.
* @{
*
*/
/**
* @brief Read generic device register
*
* @param ctx read / write interface definitions(ptr)
* @param reg register to read
* @param data pointer to buffer that store the data read(ptr)
* @param len number of consecutive register to read
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t __weak ilps28qsw_read_reg(const stmdev_ctx_t *ctx, uint8_t reg, uint8_t *data,
uint16_t len)
{
int32_t ret;
if (ctx == NULL)
{
return -1;
}
ret = ctx->read_reg(ctx->handle, reg, data, len);
return ret;
}
/**
* @brief Write generic device register
*
* @param ctx read / write interface definitions(ptr)
* @param reg register to write
* @param data pointer to data to write in register reg(ptr)
* @param len number of consecutive register to write
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t __weak ilps28qsw_write_reg(const stmdev_ctx_t *ctx, uint8_t reg, uint8_t *data,
uint16_t len)
{
int32_t ret;
if (ctx == NULL)
{
return -1;
}
ret = ctx->write_reg(ctx->handle, reg, data, len);
return ret;
}
/**
* @}
*
*/
/**
* @defgroup Private_functions
* @brief Section collect all the utility functions needed by APIs.
* @{
*
*/
static void bytecpy(uint8_t *target, uint8_t *source)
{
if ((target != NULL) && (source != NULL))
{
*target = *source;
}
}
/**
* @}
*
*/
/**
* @defgroup Sensitivity
* @brief These functions convert raw-data into engineering units.
* @{
*
*/
float_t ilps28qsw_from_fs1260_to_hPa(int32_t lsb)
{
return ((float_t)lsb / 1048576.0f); /* 4096.0f * 256 */
}
float_t ilps28qsw_from_fs4060_to_hPa(int32_t lsb)
{
return ((float_t)lsb / 524288.0f); /* 2048.0f * 256 */
}
float_t ilps28qsw_from_lsb_to_celsius(int16_t lsb)
{
return ((float_t)lsb / 100.0f);
}
float_t ilps28qsw_from_lsb_to_mv(int32_t lsb)
{
return ((float_t)lsb) / 426000.0f;
}
/**
* @}
*
*/
/**
* @defgroup Basic functions
* @brief This section groups all the functions concerning device basic
* configuration.
* @{
*
*/
/**
* @brief Device "Who am I".[get]
*
* @param ctx communication interface handler.(ptr)
* @param val ID values.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_id_get(const stmdev_ctx_t *ctx, ilps28qsw_id_t *val)
{
uint8_t reg;
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_WHO_AM_I, ®, 1);
val->whoami = reg;
return ret;
}
/**
* @brief Configures the bus operating mode.[set]
*
* @param ctx communication interface handler.(ptr)
* @param val configures the bus operating mode.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_bus_mode_set(const stmdev_ctx_t *ctx, ilps28qsw_bus_mode_t *val)
{
ilps28qsw_i3c_if_ctrl_t i3c_if_ctrl;
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_I3C_IF_CTRL,
(uint8_t *)&i3c_if_ctrl, 1);
if (ret == 0)
{
i3c_if_ctrl.asf_on = (uint8_t)val->filter & 0x01U;
i3c_if_ctrl.I3C_Bus_Avb_Sel = (uint8_t)val->bus_avb_time & 0x03U;
ret = ilps28qsw_write_reg(ctx, ILPS28QSW_I3C_IF_CTRL,
(uint8_t *)&i3c_if_ctrl, 1);
}
return ret;
}
/**
* @brief Configures the bus operating mode.[set]
*
* @param ctx communication interface handler.(ptr)
* @param val configures the bus operating mode.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_bus_mode_get(const stmdev_ctx_t *ctx, ilps28qsw_bus_mode_t *val)
{
ilps28qsw_i3c_if_ctrl_t i3c_if_ctrl;
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_I3C_IF_CTRL, (uint8_t *)&i3c_if_ctrl, 1);
if (ret == 0)
{
switch (i3c_if_ctrl.asf_on)
{
case ILPS28QSW_AUTO:
val->filter = ILPS28QSW_AUTO;
break;
case ILPS28QSW_ALWAYS_ON:
val->filter = ILPS28QSW_ALWAYS_ON;
break;
default:
val->filter = ILPS28QSW_AUTO;
break;
}
switch (i3c_if_ctrl.I3C_Bus_Avb_Sel)
{
case ILPS28QSW_BUS_AVB_TIME_50us:
val->bus_avb_time = ILPS28QSW_BUS_AVB_TIME_50us;
break;
case ILPS28QSW_BUS_AVB_TIME_2us:
val->bus_avb_time = ILPS28QSW_BUS_AVB_TIME_2us;
break;
case ILPS28QSW_BUS_AVB_TIME_1ms:
val->bus_avb_time = ILPS28QSW_BUS_AVB_TIME_1ms;
break;
case ILPS28QSW_BUS_AVB_TIME_25ms:
val->bus_avb_time = ILPS28QSW_BUS_AVB_TIME_25ms;
break;
default:
val->bus_avb_time = ILPS28QSW_BUS_AVB_TIME_50us;
break;
}
}
return ret;
}
/**
* @brief Configures the bus operating mode.[get]
*
* @param ctx communication interface handler.(ptr)
* @param val configures the bus operating mode.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_init_set(const stmdev_ctx_t *ctx, ilps28qsw_init_t val)
{
ilps28qsw_ctrl_reg2_t ctrl_reg2;
ilps28qsw_ctrl_reg3_t ctrl_reg3;
uint8_t reg[2];
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_CTRL_REG2, reg, 2);
if (ret == 0)
{
bytecpy((uint8_t *)&ctrl_reg2, ®[0]);
bytecpy((uint8_t *)&ctrl_reg3, ®[1]);
switch (val)
{
case ILPS28QSW_BOOT:
ctrl_reg2.boot = PROPERTY_ENABLE;
ret = ilps28qsw_write_reg(ctx, ILPS28QSW_CTRL_REG2,
(uint8_t *)&ctrl_reg2, 1);
break;
case ILPS28QSW_RESET:
ctrl_reg2.swreset = PROPERTY_ENABLE;
ret = ilps28qsw_write_reg(ctx, ILPS28QSW_CTRL_REG2,
(uint8_t *)&ctrl_reg2, 1);
break;
case ILPS28QSW_DRV_RDY:
ctrl_reg2.bdu = PROPERTY_ENABLE;
ctrl_reg3.if_add_inc = PROPERTY_ENABLE;
bytecpy(®[0], (uint8_t *)&ctrl_reg2);
bytecpy(®[1], (uint8_t *)&ctrl_reg3);
ret = ilps28qsw_write_reg(ctx, ILPS28QSW_CTRL_REG2, reg, 2);
break;
default:
ctrl_reg2.swreset = PROPERTY_ENABLE;
ret = ilps28qsw_write_reg(ctx, ILPS28QSW_CTRL_REG2,
(uint8_t *)&ctrl_reg2, 1);
break;
}
}
return ret;
}
/**
* @brief Get the status of the device.[get]
*
* @param ctx communication interface handler.(ptr)
* @param val the status of the device.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_status_get(const stmdev_ctx_t *ctx, ilps28qsw_stat_t *val)
{
ilps28qsw_interrupt_cfg_t interrupt_cfg;
ilps28qsw_int_source_t int_source;
ilps28qsw_ctrl_reg2_t ctrl_reg2;
ilps28qsw_status_t status;
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_CTRL_REG2,
(uint8_t *)&ctrl_reg2, 1);
if (ret == 0)
{
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_INT_SOURCE, (uint8_t *)&int_source, 1);
}
if (ret == 0)
{
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_STATUS, (uint8_t *)&status, 1);
}
if (ret == 0)
{
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_INTERRUPT_CFG,
(uint8_t *)&interrupt_cfg, 1);
}
val->sw_reset = ctrl_reg2.swreset;
val->boot = int_source.boot_on;
val->drdy_pres = status.p_da;
val->drdy_temp = status.t_da;
val->ovr_pres = status.p_or;
val->ovr_temp = status.t_or;
val->end_meas = ~ctrl_reg2.oneshot;
val->ref_done = ~interrupt_cfg.autozero;
return ret;
}
/**
* @brief Electrical pin configuration.[set]
*
* @param ctx communication interface handler.(ptr)
* @param val the electrical settings for the configurable pins.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_pin_conf_set(const stmdev_ctx_t *ctx, ilps28qsw_pin_conf_t *val)
{
ilps28qsw_if_ctrl_t if_ctrl;
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_IF_CTRL, (uint8_t *)&if_ctrl, 1);
if (ret == 0)
{
if_ctrl.sda_pu_en = val->sda_pull_up;
ret = ilps28qsw_write_reg(ctx, ILPS28QSW_IF_CTRL, (uint8_t *)&if_ctrl, 1);
}
return ret;
}
/**
* @brief Electrical pin configuration.[get]
*
* @param ctx communication interface handler.(ptr)
* @param val the electrical settings for the configurable pins.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_pin_conf_get(const stmdev_ctx_t *ctx, ilps28qsw_pin_conf_t *val)
{
ilps28qsw_if_ctrl_t if_ctrl;
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_IF_CTRL, (uint8_t *)&if_ctrl, 1);
val->sda_pull_up = if_ctrl.sda_pu_en;
return ret;
}
/**
* @brief Get the status of all the interrupt sources.[get]
*
* @param ctx communication interface handler.(ptr)
* @param val the status of all the interrupt sources.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_all_sources_get(const stmdev_ctx_t *ctx,
ilps28qsw_all_sources_t *val)
{
ilps28qsw_fifo_status2_t fifo_status2;
ilps28qsw_int_source_t int_source;
ilps28qsw_status_t status;
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_STATUS, (uint8_t *)&status, 1);
if (ret == 0)
{
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_INT_SOURCE,
(uint8_t *)&int_source, 1);
}
if (ret == 0)
{
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_FIFO_STATUS2,
(uint8_t *)&fifo_status2, 1);
}
val->drdy_pres = status.p_da;
val->drdy_temp = status.t_da;
val->over_pres = int_source.ph;
val->under_pres = int_source.pl;
val->thrsld_pres = int_source.ia;
val->fifo_full = fifo_status2.fifo_full_ia;
val->fifo_ovr = fifo_status2.fifo_ovr_ia;
val->fifo_th = fifo_status2.fifo_wtm_ia;
return ret;
}
/**
* @brief Sensor conversion parameters selection.[set]
*
* @param ctx communication interface handler.(ptr)
* @param val set the sensor conversion parameters.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_mode_set(const stmdev_ctx_t *ctx, ilps28qsw_md_t *val)
{
ilps28qsw_ctrl_reg1_t ctrl_reg1;
ilps28qsw_ctrl_reg2_t ctrl_reg2;
ilps28qsw_ctrl_reg3_t ctrl_reg3;
ilps28qsw_fifo_ctrl_t fifo_ctrl;
uint8_t odr_save = 0, ah_qvar_en_save = 0;
uint8_t reg[3];
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_CTRL_REG1, reg, 3);
if (ret == 0)
{
bytecpy((uint8_t *)&ctrl_reg1, ®[0]);
bytecpy((uint8_t *)&ctrl_reg2, ®[1]);
bytecpy((uint8_t *)&ctrl_reg3, ®[2]);
/* handle interleaved mode setting */
if (ctrl_reg1.odr != 0x0U)
{
/* power-down */
odr_save = ctrl_reg1.odr;
ctrl_reg1.odr = 0x0U;
ret += ilps28qsw_write_reg(ctx, ILPS28QSW_CTRL_REG1, (uint8_t *)&ctrl_reg1, 1);
}
if (ctrl_reg3.ah_qvar_en != 0U)
{
/* disable QVAR */
ah_qvar_en_save = ctrl_reg3.ah_qvar_en;
ctrl_reg3.ah_qvar_en = 0;
ret += ilps28qsw_write_reg(ctx, ILPS28QSW_CTRL_REG3, (uint8_t *)&ctrl_reg3, 1);
}
/* set interleaved mode (0 or 1) */
ctrl_reg3.ah_qvar_p_auto_en = val->interleaved_mode;
ret += ilps28qsw_write_reg(ctx, ILPS28QSW_CTRL_REG3, (uint8_t *)&ctrl_reg3, 1);
/* set FIFO interleaved mode (0 or 1) */
ret += ilps28qsw_read_reg(ctx, ILPS28QSW_FIFO_CTRL, (uint8_t *)&fifo_ctrl, 1);
fifo_ctrl.ah_qvar_p_fifo_en = val->interleaved_mode;
ret += ilps28qsw_write_reg(ctx, ILPS28QSW_FIFO_CTRL, (uint8_t *)&fifo_ctrl, 1);
if (ah_qvar_en_save != 0U)
{
/* restore ah_qvar_en back to previous setting */
ctrl_reg3.ah_qvar_en = ah_qvar_en_save;
}
if (odr_save != 0U)
{
/* restore odr back to previous setting */
ctrl_reg1.odr = odr_save;
}
ctrl_reg1.odr = (uint8_t)val->odr;
ctrl_reg1.avg = (uint8_t)val->avg;
ctrl_reg2.en_lpfp = (uint8_t)val->lpf & 0x01U;
ctrl_reg2.lfpf_cfg = ((uint8_t)val->lpf & 0x02U) >> 1;
ctrl_reg2.fs_mode = (uint8_t)val->fs;
bytecpy(®[0], (uint8_t *)&ctrl_reg1);
bytecpy(®[1], (uint8_t *)&ctrl_reg2);
bytecpy(®[2], (uint8_t *)&ctrl_reg3);
ret += ilps28qsw_write_reg(ctx, ILPS28QSW_CTRL_REG1, reg, 3);
}
return ret;
}
/**
* @brief Sensor conversion parameters selection.[get]
*
* @param ctx communication interface handler.(ptr)
* @param val get the sensor conversion parameters.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_mode_get(const stmdev_ctx_t *ctx, ilps28qsw_md_t *val)
{
ilps28qsw_ctrl_reg1_t ctrl_reg1;
ilps28qsw_ctrl_reg2_t ctrl_reg2;
ilps28qsw_ctrl_reg3_t ctrl_reg3;
uint8_t reg[3];
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_CTRL_REG1, reg, 3);
if (ret == 0)
{
bytecpy((uint8_t *)&ctrl_reg1, ®[0]);
bytecpy((uint8_t *)&ctrl_reg2, ®[1]);
bytecpy((uint8_t *)&ctrl_reg3, ®[2]);
switch (ctrl_reg2.fs_mode)
{
case ILPS28QSW_1260hPa:
val->fs = ILPS28QSW_1260hPa;
break;
case ILPS28QSW_4060hPa:
val->fs = ILPS28QSW_4060hPa;
break;
default:
val->fs = ILPS28QSW_1260hPa;
break;
}
switch (ctrl_reg1.odr)
{
case ILPS28QSW_ONE_SHOT:
val->odr = ILPS28QSW_ONE_SHOT;
break;
case ILPS28QSW_1Hz:
val->odr = ILPS28QSW_1Hz;
break;
case ILPS28QSW_4Hz:
val->odr = ILPS28QSW_4Hz;
break;
case ILPS28QSW_10Hz:
val->odr = ILPS28QSW_10Hz;
break;
case ILPS28QSW_25Hz:
val->odr = ILPS28QSW_25Hz;
break;
case ILPS28QSW_50Hz:
val->odr = ILPS28QSW_50Hz;
break;
case ILPS28QSW_75Hz:
val->odr = ILPS28QSW_75Hz;
break;
case ILPS28QSW_100Hz:
val->odr = ILPS28QSW_100Hz;
break;
case ILPS28QSW_200Hz:
val->odr = ILPS28QSW_200Hz;
break;
default:
val->odr = ILPS28QSW_ONE_SHOT;
break;
}
switch (ctrl_reg1.avg)
{
case ILPS28QSW_4_AVG:
val->avg = ILPS28QSW_4_AVG;
break;
case ILPS28QSW_8_AVG:
val->avg = ILPS28QSW_8_AVG;
break;
case ILPS28QSW_16_AVG:
val->avg = ILPS28QSW_16_AVG;
break;
case ILPS28QSW_32_AVG:
val->avg = ILPS28QSW_32_AVG;
break;
case ILPS28QSW_64_AVG:
val->avg = ILPS28QSW_64_AVG;
break;
case ILPS28QSW_128_AVG:
val->avg = ILPS28QSW_128_AVG;
break;
case ILPS28QSW_256_AVG:
val->avg = ILPS28QSW_256_AVG;
break;
case ILPS28QSW_512_AVG:
val->avg = ILPS28QSW_512_AVG;
break;
default:
val->avg = ILPS28QSW_4_AVG;
break;
}
switch ((ctrl_reg2.lfpf_cfg << 2) | ctrl_reg2.en_lpfp)
{
case ILPS28QSW_LPF_DISABLE:
val->lpf = ILPS28QSW_LPF_DISABLE;
break;
case ILPS28QSW_LPF_ODR_DIV_4:
val->lpf = ILPS28QSW_LPF_ODR_DIV_4;
break;
case ILPS28QSW_LPF_ODR_DIV_9:
val->lpf = ILPS28QSW_LPF_ODR_DIV_9;
break;
default:
val->lpf = ILPS28QSW_LPF_DISABLE;
break;
}
val->interleaved_mode = ctrl_reg3.ah_qvar_p_auto_en;
}
return ret;
}
/**
* @brief Software trigger for One-Shot.[get]
*
* @param ctx communication interface handler.(ptr)
* @param md the sensor conversion parameters.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_trigger_sw(const stmdev_ctx_t *ctx, ilps28qsw_md_t *md)
{
ilps28qsw_ctrl_reg2_t ctrl_reg2;
int32_t ret = 0;
if (md->odr == ILPS28QSW_ONE_SHOT)
{
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_CTRL_REG2, (uint8_t *)&ctrl_reg2, 1);
ctrl_reg2.oneshot = PROPERTY_ENABLE;
if (ret == 0)
{
ret = ilps28qsw_write_reg(ctx, ILPS28QSW_CTRL_REG2, (uint8_t *)&ctrl_reg2, 1);
}
}
return ret;
}
/**
* @brief AH/QVAR function enable.[set]
*
* @param ctx Read / write interface definitions
* @param val Change the value of ah_qvar_en in reg CTRL_REG3
* @retval Interface status (MANDATORY: return 0 -> no Error).
*
*/
int32_t ilps28qsw_ah_qvar_en_set(const stmdev_ctx_t *ctx, uint8_t val)
{
ilps28qsw_ctrl_reg3_t ctrl_reg3;
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_CTRL_REG3, (uint8_t *)&ctrl_reg3, 1);
if (ret == 0)
{
ctrl_reg3.ah_qvar_en = val;
ret = ilps28qsw_write_reg(ctx, ILPS28QSW_CTRL_REG3, (uint8_t *)&ctrl_reg3, 1);
}
return ret;
}
/**
* @brief AH/QVAR function enable.[get]
*
* @param ctx Read / write interface definitions
* @param val Return the value of ah_qvar_en in reg CTRL_REG3
* @retval Interface status (MANDATORY: return 0 -> no Error).
*
*/
int32_t ilps28qsw_ah_qvar_en_get(const stmdev_ctx_t *ctx, uint8_t *val)
{
ilps28qsw_ctrl_reg3_t ctrl_reg3;
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_CTRL_REG3, (uint8_t *)&ctrl_reg3, 1);
*val = ctrl_reg3.ah_qvar_en;
return ret;
}
/**
* @brief Retrieve sensor data.[get]
*
* @param ctx communication interface handler.(ptr)
* @param md the sensor conversion parameters.(ptr)
* @param data data retrived from the sensor.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_data_get(const stmdev_ctx_t *ctx, ilps28qsw_md_t *md,
ilps28qsw_data_t *data)
{
uint8_t buff[5];
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_PRESS_OUT_XL, buff, 5);
/* pressure conversion */
data->pressure.raw = (int32_t)buff[2];
data->pressure.raw = (data->pressure.raw * 256) + (int32_t) buff[1];
data->pressure.raw = (data->pressure.raw * 256) + (int32_t) buff[0];
data->pressure.raw = data->pressure.raw * 256;
if (md->interleaved_mode == 1U)
{
if ((buff[0] & 0x1U) == 0U)
{
/* data is a pressure sample */
switch (md->fs)
{
case ILPS28QSW_1260hPa:
data->pressure.hpa = ilps28qsw_from_fs1260_to_hPa(data->pressure.raw);
break;
case ILPS28QSW_4060hPa:
data->pressure.hpa = ilps28qsw_from_fs4060_to_hPa(data->pressure.raw);
break;
default:
data->pressure.hpa = 0.0f;
break;
}
data->ah_qvar.lsb = 0;
}
else
{
/* data is a AH_QVAR sample */
data->ah_qvar.lsb = (data->pressure.raw / 256); /* shift 8bit left */
data->pressure.hpa = 0.0f;
}
}
else
{
switch (md->fs)
{
case ILPS28QSW_1260hPa:
data->pressure.hpa = ilps28qsw_from_fs1260_to_hPa(data->pressure.raw);
break;
case ILPS28QSW_4060hPa:
data->pressure.hpa = ilps28qsw_from_fs4060_to_hPa(data->pressure.raw);
break;
default:
data->pressure.hpa = 0.0f;
break;
}
data->ah_qvar.lsb = 0;
}
/* temperature conversion */
data->heat.raw = (int16_t)buff[4];
data->heat.raw = (data->heat.raw * 256) + (int16_t) buff[3];
data->heat.deg_c = ilps28qsw_from_lsb_to_celsius(data->heat.raw);
return ret;
}
/**
* @brief Pressure output value.[get]
*
* @param ctx read / write interface definitions
* @param buff buffer that stores data read
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_pressure_raw_get(const stmdev_ctx_t *ctx, uint32_t *buff)
{
int32_t ret;
uint8_t reg[3];
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_PRESS_OUT_XL, reg, 3);
*buff = reg[2];
*buff = (*buff * 256U) + reg[1];
*buff = (*buff * 256U) + reg[0];
*buff *= 256U;
return ret;
}
/**
* @brief Temperature output value.[get]
*
* @param ctx read / write interface definitions
* @param buff buffer that stores data read
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_temperature_raw_get(const stmdev_ctx_t *ctx, int16_t *buff)
{
int32_t ret;
uint8_t reg[2];
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_TEMP_OUT_L, reg, 2);
*buff = (int16_t)reg[1];
*buff = (*buff * 256) + (int16_t)reg[0];
return ret;
}
/**
* @brief AH/QVAR data read.[get]
*
* @param ctx communication interface handler.(ptr)
* @param md the sensor conversion parameters.(ptr)
* @param data data retrived from the sensor.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_ah_qvar_data_get(const stmdev_ctx_t *ctx,
ilps28qsw_ah_qvar_data_t *data)
{
uint8_t buff[5];
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_PRESS_OUT_XL, buff, 3);
/* QVAR conversion */
data->raw = (int32_t)buff[2];
data->raw = (data->raw * 256) + (int32_t) buff[1];
data->raw = (data->raw * 256) + (int32_t) buff[0];
data->raw = (data->raw * 256);
data->lsb = (data->raw / 256); /* shift 8bit left */
data->mv = ilps28qsw_from_lsb_to_mv(data->lsb);
return ret;
}
/**
* @}
*
*/
/**
* @defgroup FIFO functions
* @brief This section groups all the functions concerning the
* management of FIFO.
* @{
*
*/
/**
* @brief FIFO operation mode selection.[set]
*
* @param ctx communication interface handler.(ptr)
* @param val set the FIFO operation mode.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_fifo_mode_set(const stmdev_ctx_t *ctx, ilps28qsw_fifo_md_t *val)
{
ilps28qsw_fifo_ctrl_t fifo_ctrl;
ilps28qsw_fifo_wtm_t fifo_wtm;
uint8_t reg[2];
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_FIFO_CTRL, reg, 2);
if (ret == 0)
{
bytecpy((uint8_t *)&fifo_ctrl, ®[0]);
bytecpy((uint8_t *)&fifo_wtm, ®[1]);
fifo_ctrl.f_mode = (uint8_t)val->operation & 0x03U;
fifo_ctrl.trig_modes = ((uint8_t)val->operation & 0x04U) >> 2;
if (val->watermark != 0x00U)
{
fifo_ctrl.stop_on_wtm = PROPERTY_ENABLE;
}
else
{
fifo_ctrl.stop_on_wtm = PROPERTY_DISABLE;
}
fifo_wtm.wtm = val->watermark;
bytecpy(®[0], (uint8_t *)&fifo_ctrl);
bytecpy(®[1], (uint8_t *)&fifo_wtm);
ret = ilps28qsw_write_reg(ctx, ILPS28QSW_FIFO_CTRL, reg, 2);
}
return ret;
}
/**
* @brief FIFO operation mode selection.[get]
*
* @param ctx communication interface handler.(ptr)
* @param val get the FIFO operation mode.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_fifo_mode_get(const stmdev_ctx_t *ctx, ilps28qsw_fifo_md_t *val)
{
ilps28qsw_fifo_ctrl_t fifo_ctrl;
ilps28qsw_fifo_wtm_t fifo_wtm;
uint8_t reg[2];
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_FIFO_CTRL, reg, 2);
bytecpy((uint8_t *)&fifo_ctrl, ®[0]);
bytecpy((uint8_t *)&fifo_wtm, ®[1]);
switch ((fifo_ctrl.trig_modes << 2) | fifo_ctrl.f_mode)
{
case ILPS28QSW_BYPASS:
val->operation = ILPS28QSW_BYPASS;
break;
case ILPS28QSW_FIFO:
val->operation = ILPS28QSW_FIFO;
break;
case ILPS28QSW_STREAM:
val->operation = ILPS28QSW_STREAM;
break;
case ILPS28QSW_STREAM_TO_FIFO:
val->operation = ILPS28QSW_STREAM_TO_FIFO;
break;
case ILPS28QSW_BYPASS_TO_STREAM:
val->operation = ILPS28QSW_BYPASS_TO_STREAM;
break;
case ILPS28QSW_BYPASS_TO_FIFO:
val->operation = ILPS28QSW_BYPASS_TO_FIFO;
break;
default:
val->operation = ILPS28QSW_BYPASS;
break;
}
val->watermark = fifo_wtm.wtm;
return ret;
}
/**
* @brief Get the number of samples stored in FIFO.[get]
*
* @param ctx communication interface handler.(ptr)
* @param md the sensor conversion parameters.(ptr)
* @param val number of samples stored in FIFO.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_fifo_level_get(const stmdev_ctx_t *ctx, uint8_t *val)
{
ilps28qsw_fifo_status1_t fifo_status1;
int32_t ret;
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_FIFO_STATUS1,
(uint8_t *)&fifo_status1, 1);
*val = fifo_status1.fss;
return ret;
}
/**
* @brief Software trigger for One-Shot.[get]
*
* @param ctx communication interface handler.(ptr)
* @param md the sensor conversion parameters.(ptr)
* @param fmd get the FIFO operation mode.(ptr)
* @param samp number of samples stored in FIFO.(ptr)
* @param data data retrived from FIFO.(ptr)
* @retval interface status (MANDATORY: return 0 -> no Error)
*
*/
int32_t ilps28qsw_fifo_data_get(const stmdev_ctx_t *ctx, uint8_t samp,
ilps28qsw_md_t *md, ilps28qsw_fifo_data_t *data)
{
uint8_t fifo_data[3];
uint8_t i;
int32_t ret = 0;
for (i = 0U; i < samp; i++)
{
ret = ilps28qsw_read_reg(ctx, ILPS28QSW_FIFO_DATA_OUT_PRESS_XL, fifo_data, 3);
data[i].raw = (int32_t)fifo_data[2];
data[i].raw = (data[i].raw * 256) + (int32_t)fifo_data[1];
data[i].raw = (data[i].raw * 256) + (int32_t)fifo_data[0];
data[i].raw = (data[i].raw * 256);
if (md->interleaved_mode == 1U)
{
if ((fifo_data[0] & 0x1U) == 0U)
{