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| author | Rocco Marco Guglielmi <roccomarco.guglielmi@gmail.com> | 2018-03-13 09:30:43 +0000 |
|---|---|---|
| committer | Rocco Marco Guglielmi <roccomarco.guglielmi@gmail.com> | 2018-03-13 09:30:43 +0000 |
| commit | 39b398c1f0db29688edefc740796f738c919c5ba (patch) | |
| tree | 018a85279572369d3baa4c8f53ae040b3cd354d8 /os/ex/ST/lps22hb.c | |
| parent | 074e213e8f48ebb660af1531b7d116c497b1f444 (diff) | |
| download | ChibiOS-39b398c1f0db29688edefc740796f738c919c5ba.tar.gz ChibiOS-39b398c1f0db29688edefc740796f738c919c5ba.tar.bz2 ChibiOS-39b398c1f0db29688edefc740796f738c919c5ba.zip | |
Added support for LPS22HB 2 axis Barometer\Thermometer MEMS.
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/trunk@11719 110e8d01-0319-4d1e-a829-52ad28d1bb01
Diffstat (limited to 'os/ex/ST/lps22hb.c')
| -rw-r--r-- | os/ex/ST/lps22hb.c | 682 |
1 files changed, 682 insertions, 0 deletions
diff --git a/os/ex/ST/lps22hb.c b/os/ex/ST/lps22hb.c new file mode 100644 index 000000000..235df8f56 --- /dev/null +++ b/os/ex/ST/lps22hb.c @@ -0,0 +1,682 @@ +/*
+ ChibiOS - Copyright (C) 2016..2018 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 lps22hb.c
+ * @brief LPS22HB MEMS interface module code.
+ *
+ * @addtogroup LPS22HB
+ * @ingroup EX_ST
+ * @{
+ */
+
+#include "hal.h"
+#include "lps22hb.h"
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+#if (LPS22HB_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 lps22hbI2CReadRegister(I2CDriver *i2cp, lps22hb_sad_t sad,
+ uint8_t reg, uint8_t* rxbuf, size_t n) {
+
+ return i2cMasterTransmitTimeout(i2cp, sad, ®, 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
+ */
+#define lps22hbI2CWriteRegister(i2cp, sad, txbuf, n) \
+ i2cMasterTransmitTimeout(i2cp, sad, txbuf, n + 1, NULL, 0, \
+ TIME_INFINITE)
+#endif /* LPS22HB_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 LPS22HB_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[]) {
+ LPS22HBDriver* devp;
+ uint8_t buff[3];
+ msg_t msg;
+
+ osalDbgCheck((ip != NULL) && (axes != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseBarometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_READY),
+ "baro_read_raw(), invalid state");
+
+ osalDbgAssert((devp->config->i2cp->state == I2C_READY),
+ "baro_read_raw(), channel not ready");
+
+#if LPS22HB_SHARED_I2C
+ i2cAcquireBus(devp->config->i2cp);
+ i2cStart(devp->config->i2cp,
+ devp->config->i2ccfg);
+#endif /* LPS22HB_SHARED_I2C */
+
+ msg = lps22hbI2CReadRegister(devp->config->i2cp, devp->config->slaveaddress,
+ LPS22HB_AD_PRESS_OUT_XL, buff, 3);
+
+#if LPS22HB_SHARED_I2C
+ i2cReleaseBus(devp->config->i2cp);
+#endif /* LPS22HB_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[]) {
+ LPS22HBDriver* devp;
+ int32_t raw;
+ msg_t msg;
+
+ osalDbgCheck((ip != NULL) && (axes != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseBarometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_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) {
+ LPS22HBDriver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck((ip != NULL) && (bp != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseBarometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_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) {
+ LPS22HBDriver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck(ip != NULL);
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseBarometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_READY),
+ "baro_reset_bias(), invalid state");
+
+ devp->barobias = LPS22HB_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) {
+ LPS22HBDriver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck((ip != NULL) && (sp != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseBarometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_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) {
+ LPS22HBDriver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck(ip != NULL);
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseBarometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_READY),
+ "baro_reset_sensitivity(), invalid state");
+
+ devp->barosensitivity = LPS22HB_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 LPS22HB_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[]) {
+ LPS22HBDriver* devp;
+ int16_t tmp;
+ uint8_t buff[2];
+ msg_t msg;
+
+ osalDbgCheck((ip != NULL) && (axes != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_READY),
+ "thermo_read_raw(), invalid state");
+
+ osalDbgAssert((devp->config->i2cp->state == I2C_READY),
+ "thermo_read_raw(), channel not ready");
+
+#if LPS22HB_SHARED_I2C
+ i2cAcquireBus(devp->config->i2cp);
+ i2cStart(devp->config->i2cp,
+ devp->config->i2ccfg);
+#endif /* LPS22HB_SHARED_I2C */
+
+ msg = lps22hbI2CReadRegister(devp->config->i2cp, devp->config->slaveaddress,
+ LPS22HB_AD_TEMP_OUT_L, buff, 2);
+
+#if LPS22HB_SHARED_I2C
+ i2cReleaseBus(devp->config->i2cp);
+#endif /* LPS22HB_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] 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 thermo_read_cooked(void *ip, float* axis) {
+ LPS22HBDriver* devp;
+ int32_t raw;
+ msg_t msg;
+
+ osalDbgCheck((ip != NULL) && (axis != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_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) {
+ LPS22HBDriver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck((ip != NULL) && (bp != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_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) {
+ LPS22HBDriver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck(ip != NULL);
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_READY),
+ "thermo_reset_bias(), invalid state");
+
+ devp->thermobias = LPS22HB_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) {
+ LPS22HBDriver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck((ip != NULL) && (sp != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_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) {
+ LPS22HBDriver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck(ip != NULL);
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(LPS22HBDriver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == LPS22HB_READY),
+ "thermo_reset_sensitivity(), invalid state");
+
+ devp->thermosensitivity = LPS22HB_THERMO_SENS;
+
+ return msg;
+}
+
+static const struct LPS22HBVMT vmt_device = {
+ (size_t)0
+};
+
+static const struct BaseBarometerVMT vmt_barometer = {
+ sizeof(struct LPS22HBVMT*),
+ 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 LPS22HBVMT*) + 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 LPS22HBDriver object
+ *
+ * @init
+ */
+void lps22hbObjectInit(LPS22HBDriver *devp) {
+
+ devp->vmt = &vmt_device;
+ devp->baro_if.vmt = &vmt_barometer;
+ devp->thermo_if.vmt = &vmt_thermometer;
+
+ devp->config = NULL;
+
+ devp->baroaxes = LPS22HB_BARO_NUMBER_OF_AXES;
+ devp->thermoaxes = LPS22HB_THERMO_NUMBER_OF_AXES;
+
+ devp->state = LPS22HB_STOP;
+}
+
+/**
+ * @brief Configures and activates LPS22HB Complex Driver peripheral.
+ *
+ * @param[in] devp pointer to the @p LPS22HBDriver object
+ * @param[in] config pointer to the @p LPS22HBConfig object
+ *
+ * @api
+ */
+void lps22hbStart(LPS22HBDriver *devp, const LPS22HBConfig *config) {
+ uint8_t cr[2];
+ osalDbgCheck((devp != NULL) && (config != NULL));
+
+ osalDbgAssert((devp->state == LPS22HB_STOP) || (devp->state == LPS22HB_READY),
+ "lps22hbStart(), invalid state");
+
+ devp->config = config;
+
+ /* Enabling register auto-increment.*/
+ /* Control register 1 configuration block.*/
+ {
+ cr[0] = LPS22HB_AD_CTRL_REG2;
+ cr[1] = LPS22HB_CTRL_REG2_IF_ADD_INC;
+ }
+#if LPS22HB_SHARED_I2C
+ i2cAcquireBus(devp->config->i2cp);
+#endif /* LPS22HB_SHARED_I2C */
+
+ i2cStart(devp->config->i2cp, devp->config->i2ccfg);
+ lps22hbI2CWriteRegister(devp->config->i2cp, devp->config->slaveaddress,
+ cr, 1);
+
+ /* Control register 1 configuration block.*/
+ {
+ cr[0] = LPS22HB_AD_CTRL_REG1;
+ cr[1] = devp->config->outputdatarate;
+#if LPS22HB_USE_ADVANCED || defined(__DOXYGEN__)
+ cr[1] |= devp->config->blockdataupdate;
+ cr[1] |= devp->config->lowpass_filter;
+#endif
+ }
+
+#if LPS22HB_SHARED_I2C
+ i2cAcquireBus((devp)->config->i2cp);
+#endif /* LPS22HB_SHARED_I2C */
+ i2cStart((devp)->config->i2cp,
+ (devp)->config->i2ccfg);
+
+ lps22hbI2CWriteRegister(devp->config->i2cp, devp->config->slaveaddress, cr, 1);
+
+#if LPS22HB_SHARED_I2C
+ i2cReleaseBus((devp)->config->i2cp);
+#endif /* LPS22HB_SHARED_I2C */
+
+ if(devp->config->barosensitivity == NULL) {
+ devp->barosensitivity = LPS22HB_BARO_SENS;
+ }
+ else{
+ /* Taking barometer sensitivity from user configurations */
+ devp->barosensitivity = *(devp->config->barosensitivity);
+ }
+
+ if(devp->config->barobias == NULL) {
+ devp->barobias = LPS22HB_BARO_BIAS;
+ }
+ else{
+ /* Taking barometer bias from user configurations */
+ devp->barobias = *(devp->config->barobias);
+ }
+
+ if(devp->config->thermosensitivity == NULL) {
+ devp->thermosensitivity = LPS22HB_THERMO_SENS;
+ }
+ else{
+ /* Taking thermometer sensitivity from user configurations */
+ devp->thermosensitivity = *(devp->config->thermosensitivity);
+ }
+
+ if(devp->config->thermobias == NULL) {
+ devp->thermobias = LPS22HB_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 = LPS22HB_READY;
+}
+
+/**
+ * @brief Deactivates the LPS22HB Complex Driver peripheral.
+ *
+ * @param[in] devp pointer to the @p LPS22HBDriver object
+ *
+ * @api
+ */
+void lps22hbStop(LPS22HBDriver *devp) {
+ uint8_t cr[2];
+
+ osalDbgCheck(devp != NULL);
+
+ osalDbgAssert((devp->state == LPS22HB_STOP) || (devp->state == LPS22HB_READY),
+ "lps22hbStop(), invalid state");
+
+ if (devp->state == LPS22HB_READY) {
+#if LPS22HB_SHARED_I2C
+ i2cAcquireBus((devp)->config->i2cp);
+ i2cStart((devp)->config->i2cp,
+ (devp)->config->i2ccfg);
+#endif /* LPS22HB_SHARED_I2C */
+
+ cr[0] = LPS22HB_AD_CTRL_REG1;
+ cr[1] = 0;
+ lps22hbI2CWriteRegister(devp->config->i2cp, devp->config->slaveaddress,
+ cr, 1);
+
+ i2cStop((devp)->config->i2cp);
+#if LPS22HB_SHARED_I2C
+ i2cReleaseBus((devp)->config->i2cp);
+#endif /* LPS22HB_SHARED_I2C */
+ }
+ devp->state = LPS22HB_STOP;
+}
+/** @} */
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