1 files changed, 696 insertions, 0 deletions

diff --git a/lib/chibios/os/ex/devices/ST/lps25h.c b/lib/chibios/os/ex/devices/ST/lps25h.c
new file mode 100644
index 000000000..80dbe241c
--- /dev/null
+++ b/lib/chibios/os/ex/devices/ST/lps25h.c
@@ -0,0 +1,696 @@
+/*
+    ChibiOS - Copyright (C) 2016..2019 Rocco Marco Guglielmi
+
+    This file is part of ChibiOS.
+
+    ChibiOS is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    ChibiOS is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+*/
+
+/**
+ * @file    lps25h.c
+ * @brief   LPS25H MEMS interface module code.
+ *
+ * @addtogroup LPS25H
+ * @ingroup EX_ST
+ * @{
+ */
+
+#include "hal.h"
+#include "lps25h.h"
+
+/*===========================================================================*/
+/* Driver local definitions.                                                 */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+#if (LPS25H_USE_I2C) || defined(__DOXYGEN__)
+/**
+ * @brief   Reads registers value using I2C.
+ * @pre     The I2C interface must be initialized and the driver started.
+ *
+ * @param[in]  i2cp      pointer to the I2C interface
+ * @param[in]  sad       slave address without R bit
+ * @param[in]  reg       first sub-register address
+ * @param[out] rxbuf     pointer to an output buffer
+ * @param[in]  n         number of consecutive register to read
+ * @return               the operation status.
+ *
+ * @notapi
+ */
+static msg_t lps25hI2CReadRegister(I2CDriver *i2cp, lps25h_sad_t sad,
+                                   uint8_t reg, uint8_t* rxbuf, size_t n) {
+  uint8_t txbuf = reg;
+  if(n > 1)
+    txbuf |= LPS25H_SUB_MS;
+
+  return i2cMasterTransmitTimeout(i2cp, sad, &txbuf, 1, rxbuf, n,
+                                  TIME_INFINITE);
+}
+
+/**
+ * @brief   Writes a value into a register using I2C.
+ * @pre     The I2C interface must be initialized and the driver started.
+ *
+ * @param[in] i2cp       pointer to the I2C interface
+ * @param[in] sad        slave address without R bit
+ * @param[in] txbuf      buffer containing sub-address value in first position
+ *                       and values to write
+ * @param[in] n          size of txbuf less one (not considering the first
+ *                       element)
+ * @return               the operation status.
+ *
+ * @notapi
+ */
+static msg_t lps25hI2CWriteRegister(I2CDriver *i2cp, lps25h_sad_t sad,
+                                    uint8_t* txbuf, size_t n) {
+  if (n > 1)
+    (*txbuf) |= LPS25H_SUB_MS;
+  return i2cMasterTransmitTimeout(i2cp, sad, txbuf, n + 1, NULL, 0,
+                                  TIME_INFINITE);
+}
+#endif /* LPS25H_USE_I2C */
+
+/**
+ * @brief   Return the number of axes of the BaseBarometer.
+ *
+ * @param[in] ip        pointer to @p BaseBarometer interface.
+ *
+ * @return              the number of axes.
+ */
+static size_t baro_get_axes_number(void *ip) {
+  (void)ip;
+
+  return LPS25H_BARO_NUMBER_OF_AXES;
+}
+
+/**
+ * @brief   Retrieves raw data from the BaseBarometer.
+ * @note    This data is retrieved from MEMS register without any algebraical
+ *          manipulation.
+ * @note    The axes array must be at least the same size of the
+ *          BaseBarometer axes number.
+ *
+ * @param[in] ip        pointer to @p BaseBarometer interface.
+ * @param[out] axes     a buffer which would be filled with raw data.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ * @retval MSG_RESET    if one or more I2C errors occurred, the errors can
+ *                      be retrieved using @p i2cGetErrors().
+ * @retval MSG_TIMEOUT  if a timeout occurred before operation end.
+ */
+static msg_t baro_read_raw(void *ip, int32_t axes[]) {
+  LPS25HDriver* devp;
+  uint8_t buff[3];
+  msg_t msg;
+
+  osalDbgCheck((ip != NULL) && (axes != NULL));
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseBarometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "baro_read_raw(), invalid state");
+
+  osalDbgAssert((devp->config->i2cp->state == I2C_READY),
+                "baro_read_raw(), channel not ready");
+
+#if LPS25H_SHARED_I2C
+  i2cAcquireBus(devp->config->i2cp);
+  i2cStart(devp->config->i2cp,
+           devp->config->i2ccfg);
+#endif /* LPS25H_SHARED_I2C */
+
+  msg = lps25hI2CReadRegister(devp->config->i2cp, devp->config->slaveaddress,
+                              LPS25H_AD_PRESS_OUT_XL, buff, 3);
+
+#if LPS25H_SHARED_I2C
+  i2cReleaseBus(devp->config->i2cp);
+#endif /* LPS25H_SHARED_I2C */
+
+  if(msg == MSG_OK) {
+    *axes = buff[0] + (buff[1] << 8) + (buff[2] << 16);
+  }
+  return msg;
+}
+
+/**
+ * @brief   Retrieves cooked data from the BaseBarometer.
+ * @note    This data is manipulated according to the formula
+ *          cooked = (raw * sensitivity) - bias.
+ * @note    Final data is expressed as hPa.
+ * @note    The axes array must be at least the same size of the
+ *          BaseBarometer axes number.
+ *
+ * @param[in] ip        pointer to @p BaseBarometer interface.
+ * @param[out] axes     a buffer which would be filled with cooked data.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ * @retval MSG_RESET    if one or more I2C errors occurred, the errors can
+ *                      be retrieved using @p i2cGetErrors().
+ * @retval MSG_TIMEOUT  if a timeout occurred before operation end.
+ */
+static msg_t baro_read_cooked(void *ip, float axes[]) {
+  LPS25HDriver* devp;
+  int32_t raw;
+  msg_t msg;
+
+  osalDbgCheck((ip != NULL) && (axes != NULL));
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseBarometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "baro_read_cooked(), invalid state");
+
+  msg = baro_read_raw(ip, &raw);
+
+  *axes = (raw * devp->barosensitivity) - devp->barobias;
+
+  return msg;
+}
+
+/**
+ * @brief   Set bias values for the BaseBarometer.
+ * @note    Bias must be expressed as hPa.
+ * @note    The bias buffer must be at least the same size of the
+ *          BaseBarometer axes number.
+ *
+ * @param[in] ip        pointer to @p BaseBarometer interface.
+ * @param[in] bp        a buffer which contains biases.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ * @retval MSG_RESET    if one or more I2C errors occurred, the errors can
+ *                      be retrieved using @p i2cGetErrors().
+ * @retval MSG_TIMEOUT  if a timeout occurred before operation end.
+ */
+static msg_t baro_set_bias(void *ip, float *bp) {
+  LPS25HDriver* devp;
+  msg_t msg = MSG_OK;
+
+  osalDbgCheck((ip != NULL) && (bp != NULL));
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseBarometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "baro_set_bias(), invalid state");
+
+  devp->barobias = *bp;
+  return msg;
+}
+
+/**
+ * @brief   Reset bias values for the BaseBarometer.
+ * @note    Default biases value are obtained from device datasheet when
+ *          available otherwise they are considered zero.
+ *
+ * @param[in] ip        pointer to @p BaseBarometer interface.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ */
+static msg_t baro_reset_bias(void *ip) {
+  LPS25HDriver* devp;
+  msg_t msg = MSG_OK;
+
+  osalDbgCheck(ip != NULL);
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseBarometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "baro_reset_bias(), invalid state");
+
+  devp->barobias = LPS25H_BARO_SENS;
+  return msg;
+}
+
+/**
+ * @brief   Set sensitivity values for the BaseBarometer.
+ * @note    Sensitivity must be expressed as hPa/LSB.
+ * @note    The sensitivity buffer must be at least the same size of the
+ *          BaseBarometer axes number.
+ *
+ * @param[in] ip        pointer to @p BaseBarometer interface.
+ * @param[in] sp        a buffer which contains sensitivities.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ */
+static msg_t baro_set_sensitivity(void *ip, float *sp) {
+  LPS25HDriver* devp;
+  msg_t msg = MSG_OK;
+
+  osalDbgCheck((ip != NULL) && (sp != NULL));
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseBarometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "baro_set_sensitivity(), invalid state");
+
+  devp->barosensitivity = *sp;
+  return msg;
+}
+
+/**
+ * @brief   Reset sensitivity values for the BaseBarometer.
+ * @note    Default sensitivities value are obtained from device datasheet.
+ *
+ * @param[in] ip        pointer to @p BaseBarometer interface.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ */
+static msg_t baro_reset_sensitivity(void *ip) {
+  LPS25HDriver* devp;
+  msg_t msg = MSG_OK;
+
+  osalDbgCheck(ip != NULL);
+
+    /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseBarometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "baro_reset_sensitivity(), invalid state");
+
+  devp->barosensitivity = LPS25H_BARO_SENS;
+  return msg;
+}
+
+/**
+ * @brief   Return the number of axes of the BaseThermometer.
+ *
+ * @param[in] ip        pointer to @p BaseThermometer interface.
+ *
+ * @return              the number of axes.
+ */
+static size_t thermo_get_axes_number(void *ip) {
+  (void)ip;
+
+  return LPS25H_THERMO_NUMBER_OF_AXES;
+}
+
+/**
+ * @brief   Retrieves raw data from the BaseThermometer.
+ * @note    This data is retrieved from MEMS register without any algebraical
+ *          manipulation.
+ * @note    The axes array must be at least the same size of the
+ *          BaseThermometer axes number.
+ *
+ * @param[in] ip        pointer to @p BaseThermometer interface.
+ * @param[out] axes     a buffer which would be filled with raw data.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ * @retval MSG_RESET    if one or more I2C errors occurred, the errors can
+ *                      be retrieved using @p i2cGetErrors().
+ * @retval MSG_TIMEOUT  if a timeout occurred before operation end.
+ */
+static msg_t thermo_read_raw(void *ip, int32_t axes[]) {
+  LPS25HDriver* devp;
+  int16_t tmp;
+  uint8_t buff[2];
+  msg_t msg;
+
+  osalDbgCheck((ip != NULL) && (axes != NULL));
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseThermometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "thermo_read_raw(), invalid state");
+
+  osalDbgAssert((devp->config->i2cp->state == I2C_READY),
+                "thermo_read_raw(), channel not ready");
+
+#if LPS25H_SHARED_I2C
+  i2cAcquireBus(devp->config->i2cp);
+  i2cStart(devp->config->i2cp,
+           devp->config->i2ccfg);
+#endif /* LPS25H_SHARED_I2C */
+
+  msg = lps25hI2CReadRegister(devp->config->i2cp, devp->config->slaveaddress,
+                              LPS25H_AD_TEMP_OUT_L, buff, 2);
+
+#if LPS25H_SHARED_I2C
+  i2cReleaseBus(devp->config->i2cp);
+#endif /* LPS25H_SHARED_I2C */
+
+  if (msg == MSG_OK) {
+    tmp = buff[0] + (buff[1] << 8);
+    *axes = (int32_t)tmp;
+  }
+  return msg;
+}
+
+/**
+ * @brief   Retrieves cooked data from the BaseThermometer.
+ * @note    This data is manipulated according to the formula
+ *          cooked = (raw * sensitivity) - bias.
+ * @note    Final data is expressed as °C.
+ * @note    The axes array must be at least the same size of the
+ *          BaseThermometer axes number.
+ *
+ * @param[in] ip        pointer to @p BaseThermometer interface.
+ * @param[out] axis     a buffer which would be filled with cooked data.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ * @retval MSG_RESET    if one or more I2C errors occurred, the errors can
+ *                      be retrieved using @p i2cGetErrors().
+ * @retval MSG_TIMEOUT  if a timeout occurred before operation end.
+ */
+static msg_t thermo_read_cooked(void *ip, float* axis) {
+  LPS25HDriver* devp;
+  int32_t raw;
+  msg_t msg;
+
+  osalDbgCheck((ip != NULL) && (axis != NULL));
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseThermometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "thermo_read_cooked(), invalid state");
+
+  msg = thermo_read_raw(devp, &raw);
+
+  *axis = (raw * devp->thermosensitivity) - devp->thermobias;
+
+  return msg;
+}
+
+/**
+ * @brief   Set bias values for the BaseThermometer.
+ * @note    Bias must be expressed as °C.
+ * @note    The bias buffer must be at least the same size of the
+ *          BaseThermometer axes number.
+ *
+ * @param[in] ip        pointer to @p BaseThermometer interface.
+ * @param[in] bp        a buffer which contains biases.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ */
+static msg_t thermo_set_bias(void *ip, float *bp) {
+  LPS25HDriver* devp;
+  msg_t msg = MSG_OK;
+
+  osalDbgCheck((ip != NULL) && (bp != NULL));
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseThermometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "thermo_set_bias(), invalid state");
+
+  devp->thermobias = *bp;
+
+  return msg;
+}
+
+/**
+ * @brief   Reset bias values for the BaseThermometer.
+ * @note    Default biases value are obtained from device datasheet when
+ *          available otherwise they are considered zero.
+ *
+ * @param[in] ip        pointer to @p BaseThermometer interface.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ */
+static msg_t thermo_reset_bias(void *ip) {
+  LPS25HDriver* devp;
+  msg_t msg = MSG_OK;
+
+  osalDbgCheck(ip != NULL);
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseThermometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "thermo_reset_bias(), invalid state");
+
+  devp->thermobias = LPS25H_THERMO_BIAS;
+
+  return msg;
+}
+
+/**
+ * @brief   Set sensitivity values for the BaseThermometer.
+ * @note    Sensitivity must be expressed as °C/LSB.
+ * @note    The sensitivity buffer must be at least the same size of the
+ *          BaseThermometer axes number.
+ *
+ * @param[in] ip        pointer to @p BaseThermometer interface.
+ * @param[in] sp        a buffer which contains sensitivities.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ */
+static msg_t thermo_set_sensitivity(void *ip, float *sp) {
+  LPS25HDriver* devp;
+  msg_t msg = MSG_OK;
+
+  osalDbgCheck((ip != NULL) && (sp != NULL));
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseThermometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "thermo_set_sensitivity(), invalid state");
+
+  devp->thermosensitivity = *sp;
+
+  return msg;
+}
+
+/**
+ * @brief   Reset sensitivity values for the BaseThermometer.
+ * @note    Default sensitivities value are obtained from device datasheet.
+ *
+ * @param[in] ip        pointer to @p BaseThermometer interface.
+ *
+ * @return              The operation status.
+ * @retval MSG_OK       if the function succeeded.
+ */
+static msg_t thermo_reset_sensitivity(void *ip) {
+  LPS25HDriver* devp;
+  msg_t msg = MSG_OK;
+
+  osalDbgCheck(ip != NULL);
+
+  /* Getting parent instance pointer.*/
+  devp = objGetInstance(LPS25HDriver*, (BaseThermometer*)ip);
+
+  osalDbgAssert((devp->state == LPS25H_READY),
+                "thermo_reset_sensitivity(), invalid state");
+
+  devp->thermosensitivity = LPS25H_THERMO_SENS;
+
+  return msg;
+}
+
+static const struct LPS25HVMT vmt_device = {
+  (size_t)0
+};
+
+static const struct BaseBarometerVMT vmt_barometer = {
+  sizeof(struct LPS25HVMT*),
+  baro_get_axes_number, baro_read_raw, baro_read_cooked,
+  baro_set_bias, baro_reset_bias, baro_set_sensitivity,
+  baro_reset_sensitivity
+};
+
+static const struct BaseThermometerVMT vmt_thermometer = {
+  sizeof(struct LPS25HVMT*) + sizeof(BaseBarometer),
+  thermo_get_axes_number, thermo_read_raw, thermo_read_cooked,
+  thermo_set_bias, thermo_reset_bias, thermo_set_sensitivity,
+  thermo_reset_sensitivity
+};
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   Initializes an instance.
+ *
+ * @param[out] devp     pointer to the @p LPS25HDriver object
+ *
+ * @init
+ */
+void lps25hObjectInit(LPS25HDriver *devp) {
+
+  devp->vmt = &vmt_device;
+  devp->baro_if.vmt = &vmt_barometer;
+  devp->thermo_if.vmt = &vmt_thermometer;
+
+  devp->config = NULL;
+
+  devp->baroaxes = LPS25H_BARO_NUMBER_OF_AXES;
+  devp->thermoaxes = LPS25H_THERMO_NUMBER_OF_AXES;
+
+  devp->state = LPS25H_STOP;
+}
+
+/**
+ * @brief   Configures and activates LPS25H Complex Driver peripheral.
+ *
+ * @param[in] devp      pointer to the @p LPS25HDriver object
+ * @param[in] config    pointer to the @p LPS25HConfig object
+ *
+ * @api
+ */
+void lps25hStart(LPS25HDriver *devp, const LPS25HConfig *config) {
+  uint8_t cr[2];
+  osalDbgCheck((devp != NULL) && (config != NULL));
+
+  osalDbgAssert((devp->state == LPS25H_STOP) || (devp->state == LPS25H_READY),
+                "lps25hStart(), invalid state");
+
+  devp->config = config;
+
+  /* Control register 1 configuration block.*/
+  {
+    cr[0] = LPS25H_AD_CTRL_REG1;
+    cr[1] = devp->config->outputdatarate | LPS25H_CTRL_REG1_PD;
+#if LPS25H_USE_ADVANCED || defined(__DOXYGEN__)
+    cr[1] |= devp->config->blockdataupdate;
+#endif
+  }
+
+#if  LPS25H_SHARED_I2C
+  i2cAcquireBus((devp)->config->i2cp);
+#endif /* LPS25H_SHARED_I2C */
+  i2cStart((devp)->config->i2cp,
+           (devp)->config->i2ccfg);
+
+  lps25hI2CWriteRegister(devp->config->i2cp, devp->config->slaveaddress, cr, 1);
+
+#if  LPS25H_SHARED_I2C
+  i2cReleaseBus((devp)->config->i2cp);
+#endif /* LPS25H_SHARED_I2C */
+
+  /* Resolution configuration block.*/
+  {
+    cr[0] = LPS25H_AD_RES_CONF;
+    cr[1] = 0x05;
+#if LPS25H_USE_ADVANCED || defined(__DOXYGEN__)
+    cr[1] = devp->config->baroresolution | devp->config->thermoresolution;
+#endif
+
+  }
+#if  LPS25H_SHARED_I2C
+  i2cAcquireBus((devp)->config->i2cp);
+  i2cStart((devp)->config->i2cp,
+           (devp)->config->i2ccfg);
+#endif /* LPS25H_SHARED_I2C */
+
+  lps25hI2CWriteRegister(devp->config->i2cp, devp->config->slaveaddress,
+                         cr, 1);
+
+#if  LPS25H_SHARED_I2C
+  i2cReleaseBus((devp)->config->i2cp);
+#endif /* LPS25H_SHARED_I2C */
+
+  if(devp->config->barosensitivity == NULL) {
+    devp->barosensitivity = LPS25H_BARO_SENS;
+  }
+  else{
+    /* Taking barometer sensitivity from user configurations */
+    devp->barosensitivity = *(devp->config->barosensitivity);
+  }
+
+  if(devp->config->barobias == NULL) {
+    devp->barobias = LPS25H_BARO_BIAS;
+  }
+  else{
+    /* Taking barometer bias from user configurations */
+    devp->barobias = *(devp->config->barobias);
+  }
+
+  if(devp->config->thermosensitivity == NULL) {
+    devp->thermosensitivity = LPS25H_THERMO_SENS;
+  }
+  else{
+    /* Taking thermometer sensitivity from user configurations */
+    devp->thermosensitivity = *(devp->config->thermosensitivity);
+  }
+
+  if(devp->config->thermobias == NULL) {
+    devp->thermobias = LPS25H_THERMO_BIAS;
+  }
+  else{
+    /* Taking thermometer bias from user configurations */
+    devp->thermobias = *(devp->config->thermobias);
+  }
+
+  /* This is the Barometer transient recovery time */
+  osalThreadSleepMilliseconds(5);
+
+  devp->state = LPS25H_READY;
+}
+
+/**
+ * @brief   Deactivates the LPS25H Complex Driver peripheral.
+ *
+ * @param[in] devp       pointer to the @p LPS25HDriver object
+ *
+ * @api
+ */
+void lps25hStop(LPS25HDriver *devp) {
+  uint8_t cr[2];
+
+  osalDbgCheck(devp != NULL);
+
+  osalDbgAssert((devp->state == LPS25H_STOP) || (devp->state == LPS25H_READY),
+                "lps25hStop(), invalid state");
+
+  if (devp->state == LPS25H_READY) {
+#if  LPS25H_SHARED_I2C
+    i2cAcquireBus((devp)->config->i2cp);
+    i2cStart((devp)->config->i2cp,
+             (devp)->config->i2ccfg);
+#endif /* LPS25H_SHARED_I2C */
+
+    cr[0] = LPS25H_AD_CTRL_REG1;
+    cr[1] = 0;
+    lps25hI2CWriteRegister(devp->config->i2cp, devp->config->slaveaddress,
+                           cr, 1);
+
+    i2cStop((devp)->config->i2cp);
+#if  LPS25H_SHARED_I2C
+    i2cReleaseBus((devp)->config->i2cp);
+#endif /* LPS25H_SHARED_I2C */
+  }
+  devp->state = LPS25H_STOP;
+}
+/** @} */