diff options
Diffstat (limited to 'ChibiOS_20.3.2/os/ex/devices/ST/hts221.c')
| -rw-r--r-- | ChibiOS_20.3.2/os/ex/devices/ST/hts221.c | 781 |
1 files changed, 781 insertions, 0 deletions
diff --git a/ChibiOS_20.3.2/os/ex/devices/ST/hts221.c b/ChibiOS_20.3.2/os/ex/devices/ST/hts221.c new file mode 100644 index 0000000..eb04ef7 --- /dev/null +++ b/ChibiOS_20.3.2/os/ex/devices/ST/hts221.c @@ -0,0 +1,781 @@ +/*
+ 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 hts221.c
+ * @brief HTS221 MEMS interface module code.
+ *
+ * @addtogroup HTS221
+ * @ingroup EX_ST
+ * @{
+ */
+
+#include "hal.h"
+#include "hts221.h"
+
+/*===========================================================================*/
+/* Driver local definitions. */
+/*===========================================================================*/
+
+#define HTS221_SEL(mask, offset) (int16_t)(mask << offset)
+
+#define HTS221_FLAG_HYGRO_BIAS 0x01
+#define HTS221_FLAG_HYGRO_SENS 0x02
+#define HTS221_FLAG_THERMO_BIAS 0x04
+#define HTS221_FLAG_THERMO_SENS 0x08
+
+/*===========================================================================*/
+/* Driver exported variables. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local variables and types. */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions. */
+/*===========================================================================*/
+
+#if (HTS221_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] 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 hts221I2CReadRegister(I2CDriver *i2cp, uint8_t reg, uint8_t* rxbuf,
+ size_t n) {
+ uint8_t txbuf = reg;
+ if (n > 1)
+ txbuf |= HTS221_SUB_MS;
+
+ return i2cMasterTransmitTimeout(i2cp, HTS221_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] 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 hts221I2CWriteRegister(I2CDriver *i2cp, uint8_t* txbuf, size_t n) {
+ if (n > 1)
+ (*txbuf) |= HTS221_SUB_MS;
+
+ return i2cMasterTransmitTimeout(i2cp, HTS221_SAD, txbuf, n + 1, NULL, 0,
+ TIME_INFINITE);
+}
+#endif /* HTS221_USE_I2C */
+
+/**
+ * @brief Computes biases and sensitivities starting from data stored in
+ * calibration registers.
+ * @note Factory bias and sensitivity values are stored into the driver
+ * structure.
+ *
+ * @param[in] devp pointer to the HTS221 interface
+ * @return the operation status.
+ *
+ * @notapi
+ */
+static msg_t hts221Calibrate(HTS221Driver *devp) {
+ msg_t msg;
+ uint8_t calib[16], H0_rH_x2, H1_rH_x2, msb;
+ int16_t H0_T0_OUT, H1_T0_OUT, T0_degC_x8, T1_degC_x8, T0_OUT, T1_OUT;
+
+ /* Retrieving rH values from Calibration registers */
+ msg = hts221I2CReadRegister(devp->config->i2cp,
+ HTS221_AD_CALIB_0, calib, 16);
+
+ H0_rH_x2 = calib[0];
+ H1_rH_x2 = calib[1];
+ H0_T0_OUT = calib[6];
+ H0_T0_OUT += calib[7] << 8;
+ H1_T0_OUT = calib[10];
+ H1_T0_OUT += calib[11] << 8;
+
+ T0_degC_x8 = calib[2];
+
+ /* Completing T0_degC_x8 value */
+ msb = (calib[5] & HTS221_SEL(0x03, 0));
+ if (msb & HTS221_SEL(0x01, 1)) {
+ msb |= HTS221_SEL(0x3F, 2);
+ }
+ T0_degC_x8 += msb << 8;
+
+ T1_degC_x8 = calib[3];
+ /* Completing T1_degC_x8 value */
+ msb = ((calib[5] & HTS221_SEL(0x03, 2)) >> 2);
+ if (msb & HTS221_SEL(0x01, 1)) {
+ msb |= HTS221_SEL(0x3F, 2);
+ }
+ T1_degC_x8 += msb << 8;
+
+ T0_OUT = calib[12];
+ T0_OUT += calib[13] << 8;
+ T1_OUT = calib[14];
+ T1_OUT += calib[15] << 8;
+
+ devp->hygrofactorysensitivity = ((float)H1_rH_x2 - (float)H0_rH_x2) /
+ (((float)H1_T0_OUT - (float)H0_T0_OUT) * 2.0f);
+
+
+ devp->hygrofactorybias = (devp->hygrofactorysensitivity * (float)H0_T0_OUT) -
+ ((float)H0_rH_x2 / 2.0f);
+
+ devp->thermofactorysensitivity = ((float)T1_degC_x8 - (float)T0_degC_x8) /
+ (((float)T1_OUT - (float)T0_OUT) * 8.0f);
+
+ devp->thermofactorybias = (devp->thermofactorysensitivity * (float)T0_OUT) -
+ ((float)T0_degC_x8 / 8.0f);
+
+ return msg;
+}
+
+/**
+ * @brief Return the number of axes of the BaseHygrometer.
+ *
+ * @param[in] ip pointer to @p BaseHygrometer interface.
+ *
+ * @return the number of axes.
+ */
+static size_t hygro_get_axes_number(void *ip) {
+ (void)ip;
+
+ return HTS221_HYGRO_NUMBER_OF_AXES;
+}
+
+/**
+ * @brief Retrieves raw data from the BaseHygrometer.
+ * @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
+ * BaseHygrometer axes number.
+ *
+ * @param[in] ip pointer to @p BaseHygrometer 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 hygro_read_raw(void *ip, int32_t axes[]) {
+ HTS221Driver* devp;
+ uint8_t buff[2];
+ int16_t tmp;
+ msg_t msg;
+
+ osalDbgCheck((ip != NULL) && (axes != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseHygrometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_READY),
+ "hygro_read_raw(), invalid state");
+
+ osalDbgAssert((devp->config->i2cp->state == I2C_READY),
+ "hygro_read_raw(), channel not ready");
+
+#if HTS221_SHARED_I2C
+ i2cAcquireBus(devp->config->i2cp);
+ i2cStart(devp->config->i2cp,
+ devp->config->i2ccfg);
+#endif /* HTS221_SHARED_I2C */
+
+ msg = hts221I2CReadRegister(devp->config->i2cp, HTS221_AD_HUMIDITY_OUT_L,
+ buff, 2);
+
+#if HTS221_SHARED_I2C
+ i2cReleaseBus(devp->config->i2cp);
+#endif /* HTS221_SHARED_I2C */
+
+ if (msg == MSG_OK) {
+ tmp = buff[0] + (buff[1] << 8);
+ *axes = (int32_t)tmp;
+ }
+ return msg;
+}
+
+/**
+ * @brief Retrieves cooked data from the BaseHygrometer.
+ * @note This data is manipulated according to the formula
+ * cooked = (raw * sensitivity) - bias.
+ * @note Final data is expressed as %rH.
+ * @note The axes array must be at least the same size of the
+ * BaseHygrometer axes number.
+ *
+ * @param[in] ip pointer to @p BaseHygrometer 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 hygro_read_cooked(void *ip, float axes[]) {
+ HTS221Driver* devp;
+ int32_t raw;
+ msg_t msg;
+
+ osalDbgCheck((ip != NULL) && (axes != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseHygrometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_READY),
+ "hygro_read_cooked(), invalid state");
+
+ msg = hygro_read_raw(ip, &raw);
+
+ *axes = (raw * devp->hygrosensitivity) - devp->hygrobias;
+
+ return msg;
+}
+
+/**
+ * @brief Set bias values for the BaseHygrometer.
+ * @note Bias must be expressed as %rH.
+ * @note The bias buffer must be at least the same size of the
+ * BaseHygrometer axes number.
+ *
+ * @param[in] ip pointer to @p BaseHygrometer 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 hygro_set_bias(void *ip, float *bp) {
+ HTS221Driver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck((ip != NULL) && (bp != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseHygrometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_READY),
+ "hygro_set_bias(), invalid state");
+
+ devp->hygrobias = *bp;
+ return msg;
+}
+
+/**
+ * @brief Reset bias values for the BaseHygrometer.
+ * @note Default biases value are obtained from device datasheet when
+ * available otherwise they are considered zero.
+ *
+ * @param[in] ip pointer to @p BaseHygrometer interface.
+ *
+ * @return The operation status.
+ * @retval MSG_OK if the function succeeded.
+ */
+static msg_t hygro_reset_bias(void *ip) {
+ HTS221Driver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck(ip != NULL);
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseHygrometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_READY),
+ "hygro_reset_bias(), invalid state");
+
+ devp->hygrobias = devp->hygrofactorybias;
+ return msg;
+}
+
+/**
+ * @brief Set sensitivity values for the BaseHygrometer.
+ * @note Sensitivity must be expressed as %rH/LSB.
+ * @note The sensitivity buffer must be at least the same size of the
+ * BaseHygrometer axes number.
+ *
+ * @param[in] ip pointer to @p BaseHygrometer interface.
+ * @param[in] sp a buffer which contains sensitivities.
+ *
+ * @return The operation status.
+ * @retval MSG_OK if the function succeeded.
+ */
+static msg_t hygro_set_sensitivity(void *ip, float *sp) {
+ HTS221Driver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck((ip != NULL) && (sp != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseHygrometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_READY),
+ "hygro_set_sensitivity(), invalid state");
+
+ devp->hygrosensitivity = *sp;
+ return msg;
+}
+
+/**
+ * @brief Reset sensitivity values for the BaseHygrometer.
+ * @note Default sensitivities value are obtained from device datasheet.
+ *
+ * @param[in] ip pointer to @p BaseHygrometer interface.
+ *
+ * @return The operation status.
+ * @retval MSG_OK if the function succeeded.
+ */
+static msg_t hygro_reset_sensitivity(void *ip) {
+ HTS221Driver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck(ip != NULL);
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseHygrometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_READY),
+ "hygro_reset_sensitivity(), invalid state");
+
+ devp->hygrosensitivity = devp->hygrofactorysensitivity;
+ 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 HTS221_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[]) {
+ HTS221Driver* devp;
+ int16_t tmp;
+ uint8_t buff[2];
+ msg_t msg;
+
+ osalDbgCheck((ip != NULL) && (axes != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_READY),
+ "thermo_read_raw(), invalid state");
+
+ osalDbgAssert((devp->config->i2cp->state == I2C_READY),
+ "thermo_read_raw(), channel not ready");
+
+#if HTS221_SHARED_I2C
+ i2cAcquireBus(devp->config->i2cp);
+ i2cStart(devp->config->i2cp,
+ devp->config->i2ccfg);
+#endif /* HTS221_SHARED_I2C */
+
+ msg = hts221I2CReadRegister(devp->config->i2cp, HTS221_AD_TEMP_OUT_L,
+ buff, 2);
+
+#if HTS221_SHARED_I2C
+ i2cReleaseBus(devp->config->i2cp);
+#endif /* HTS221_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) {
+ HTS221Driver* devp;
+ int32_t raw;
+ msg_t msg;
+
+ osalDbgCheck((ip != NULL) && (axis != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_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) {
+ HTS221Driver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck((ip != NULL) && (bp != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_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) {
+ HTS221Driver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck(ip != NULL);
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_READY),
+ "thermo_reset_bias(), invalid state");
+
+ devp->thermobias = devp->thermofactorybias;
+
+ 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) {
+ HTS221Driver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck((ip != NULL) && (sp != NULL));
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_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) {
+ HTS221Driver* devp;
+ msg_t msg = MSG_OK;
+
+ osalDbgCheck(ip != NULL);
+
+ /* Getting parent instance pointer.*/
+ devp = objGetInstance(HTS221Driver*, (BaseThermometer*)ip);
+
+ osalDbgAssert((devp->state == HTS221_READY),
+ "thermo_reset_sensitivity(), invalid state");
+
+ devp->thermosensitivity = devp->thermofactorysensitivity;
+
+ return msg;
+}
+
+static const struct HTS221VMT vmt_device = {
+ (size_t)0
+};
+
+static const struct BaseHygrometerVMT vmt_hygrometer = {
+ sizeof(struct HTS221VMT*),
+ hygro_get_axes_number, hygro_read_raw, hygro_read_cooked,
+ hygro_set_bias, hygro_reset_bias, hygro_set_sensitivity,
+ hygro_reset_sensitivity
+};
+
+static const struct BaseThermometerVMT vmt_thermometer = {
+ sizeof(struct HTS221VMT*) + sizeof(BaseHygrometer),
+ 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 HTS221Driver object
+ *
+ * @init
+ */
+void hts221ObjectInit(HTS221Driver *devp) {
+
+ devp->vmt = &vmt_device;
+ devp->hygro_if.vmt = &vmt_hygrometer;
+ devp->thermo_if.vmt = &vmt_thermometer;
+
+ devp->config = NULL;
+
+ devp->hygroaxes = HTS221_HYGRO_NUMBER_OF_AXES;
+ devp->thermoaxes = HTS221_THERMO_NUMBER_OF_AXES;
+
+ devp->hygrobias = 0.0f;
+ devp->thermobias = 0.0f;
+
+ devp->state = HTS221_STOP;
+}
+
+/**
+ * @brief Configures and activates HTS221 Complex Driver peripheral.
+ *
+ * @param[in] devp pointer to the @p HTS221Driver object
+ * @param[in] config pointer to the @p HTS221Config object
+ *
+ * @api
+ */
+void hts221Start(HTS221Driver *devp, const HTS221Config *config) {
+ uint8_t cr[2];
+ osalDbgCheck((devp != NULL) && (config != NULL));
+
+ osalDbgAssert((devp->state == HTS221_STOP) || (devp->state == HTS221_READY),
+ "hts221Start(), invalid state");
+
+ devp->config = config;
+
+#if HTS221_SHARED_I2C
+ i2cAcquireBus(devp->config->i2cp);
+#endif /* HTS221_SHARED_I2C */
+
+ /* Intializing the I2C. */
+ i2cStart(devp->config->i2cp, devp->config->i2ccfg);
+
+ hts221Calibrate(devp);
+
+#if HTS221_SHARED_I2C
+ i2cReleaseBus(devp->config->i2cp);
+#endif /* HTS221_SHARED_I2C */
+
+
+ if(devp->config->hygrosensitivity == NULL) {
+ devp->hygrosensitivity = devp->hygrofactorysensitivity;
+ }
+ else{
+ /* Taking hygrometer sensitivity from user configurations */
+ devp->hygrosensitivity = *(devp->config->hygrosensitivity);
+ }
+
+ if(devp->config->hygrobias == NULL) {
+ devp->hygrobias = devp->hygrofactorybias;
+ }
+ else{
+ /* Taking hygrometer bias from user configurations */
+ devp->hygrobias = *(devp->config->hygrobias);
+ }
+
+ if(devp->config->thermosensitivity == NULL) {
+ devp->thermosensitivity = devp->thermofactorysensitivity;
+ }
+ else{
+ /* Taking thermometer sensitivity from user configurations */
+ devp->thermosensitivity = *(devp->config->thermosensitivity);
+ }
+
+ if(devp->config->thermobias == NULL) {
+ devp->thermobias = devp->thermofactorybias;
+ }
+ else{
+ /* Taking thermometer bias from user configurations */
+ devp->thermobias = *(devp->config->thermobias);
+ }
+
+ /* Control register 1 configuration block.*/
+ {
+ cr[0] = HTS221_AD_CTRL_REG1;
+ cr[1] = devp->config->outputdatarate | HTS221_CTRL_REG1_PD;
+#if HTS221_USE_ADVANCED || defined(__DOXYGEN__)
+ cr[1] |= devp->config->blockdataupdate;
+#endif
+
+#if HTS221_SHARED_I2C
+ i2cAcquireBus(devp->config->i2cp);
+ i2cStart(devp->config->i2cp, devp->config->i2ccfg);
+#endif /* HTS221_SHARED_I2C */
+
+ hts221I2CWriteRegister(devp->config->i2cp, cr, 1);
+
+#if HTS221_SHARED_I2C
+ i2cReleaseBus(devp->config->i2cp);
+#endif /* HTS221_SHARED_I2C */
+ }
+
+ /* Average register configuration block.*/
+ {
+ cr[0] = HTS221_AD_AV_CONF;
+ cr[1] = 0x05;
+#if HTS221_USE_ADVANCED || defined(__DOXYGEN__)
+ cr[1] = devp->config->hygroresolution | devp->config->thermoresolution;
+#endif
+
+#if HTS221_SHARED_I2C
+ i2cAcquireBus(devp->config->i2cp);
+ i2cStart(devp->config->i2cp, devp->config->i2ccfg);
+#endif /* HTS221_SHARED_I2C */
+
+ hts221I2CWriteRegister(devp->config->i2cp, cr, 1);
+
+#if HTS221_SHARED_I2C
+ i2cReleaseBus(devp->config->i2cp);
+#endif /* HTS221_SHARED_I2C */
+ }
+
+ /* This is the MEMS transient recovery time */
+ osalThreadSleepMilliseconds(5);
+
+ devp->state = HTS221_READY;
+}
+
+/**
+ * @brief Deactivates the HTS221 Complex Driver peripheral.
+ *
+ * @param[in] devp pointer to the @p HTS221Driver object
+ *
+ * @api
+ */
+void hts221Stop(HTS221Driver *devp) {
+ uint8_t cr[2];
+
+ osalDbgCheck(devp != NULL);
+
+ osalDbgAssert((devp->state == HTS221_STOP) || (devp->state == HTS221_READY),
+ "hts221Stop(), invalid state");
+
+ if (devp->state == HTS221_READY) {
+
+#if HTS221_SHARED_I2C
+ i2cAcquireBus(devp->config->i2cp);
+ i2cStart(devp->config->i2cp, devp->config->i2ccfg);
+#endif /* HTS221_SHARED_I2C */
+
+ cr[0] = HTS221_AD_CTRL_REG1;
+ cr[1] = 0;
+ hts221I2CWriteRegister(devp->config->i2cp, cr, 1);
+
+ i2cStop(devp->config->i2cp);
+#if HTS221_SHARED_I2C
+ i2cReleaseBus(devp->config->i2cp);
+#endif /* HTS221_SHARED_I2C */
+ }
+ devp->state = HTS221_STOP;
+}
+/** @} */
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