Diff: HTS221Sensor.cpp

Revision:

0:7917d6d00a6e

Child:

1:c4391f20553e

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/HTS221Sensor.cpp	Mon Sep 04 16:06:23 2017 +0000
@@ -0,0 +1,313 @@
+/**
+ ******************************************************************************
+ * @file    HTS221Sensor.cpp
+ * @author  CLab
+ * @version V1.0.0
+ * @date    5 August 2016
+ * @brief   Implementation of an HTS221 Humidity and Temperature sensor.
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+ *
+ * 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 STMicroelectronics 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.
+ *
+ ******************************************************************************
+ */
+
+
+/* Includes ------------------------------------------------------------------*/
+
+
+#include "HTS221Sensor.h"
+
+
+/* Class Implementation ------------------------------------------------------*/
+
+/** Constructor
+ * @param i2c object of an helper class which handles the I2C peripheral
+ * @param address the address of the component's instance
+ */
+HTS221Sensor::HTS221Sensor(DevI2C &i2c) : _dev_i2c(i2c)
+{
+  _address = HTS221_I2C_ADDRESS;
+};
+
+
+/** Constructor
+ * @param i2c object of an helper class which handles the I2C peripheral
+ * @param address the address of the component's instance
+ */
+HTS221Sensor::HTS221Sensor(DevI2C &i2c, uint8_t address) : _dev_i2c(i2c), _address(address)
+{
+
+};
+
+/**
+ * @brief     Initializing the component.
+ * @param[in] init pointer to device specific initalization structure.
+ * @retval    "0" in case of success, an error code otherwise.
+ */
+int HTS221Sensor::init(void *init)
+{
+  /* Power down the device */
+  if ( HTS221_DeActivate( (void *)this ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+
+  /* Enable BDU */
+  if ( HTS221_Set_BduMode( (void *)this, HTS221_ENABLE ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+  
+  if(set_odr(1.0f) == 1)
+  {
+    return 1;
+  }
+  
+  return 0;
+}
+
+/**
+ * @brief  Enable HTS221
+ * @retval 0 in case of success, an error code otherwise
+ */
+int HTS221Sensor::enable(void)
+{
+  /* Power up the device */
+  if ( HTS221_Activate( (void *)this ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+
+  return 0;
+}
+
+/**
+ * @brief  Disable HTS221
+ * @retval 0 in case of success, an error code otherwise
+ */
+int HTS221Sensor::disable(void)
+{
+  /* Power up the device */
+  if ( HTS221_DeActivate( (void *)this ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+
+  return 0;
+}
+
+/**
+ * @brief  Read ID address of HTS221
+ * @param  id the pointer where the ID of the device is stored
+ * @retval 0 in case of success, an error code otherwise
+ */
+int HTS221Sensor::read_id(uint8_t *id)
+{
+  if(!id)
+  { 
+    return 1;
+  }
+  
+  /* Read WHO AM I register */
+  if ( HTS221_Get_DeviceID( (void *)this, id ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+
+  return 0;
+}
+
+/**
+ * @brief  Reboot memory content of HTS221
+ * @param  None
+ * @retval 0 in case of success, an error code otherwise
+ */
+int HTS221Sensor::reset(void)
+{
+    uint8_t tmpreg;
+
+    /* Read CTRL_REG2 register */
+    if (read_reg(HTS221_CTRL_REG2, &tmpreg) != 0)
+    {
+      return 1;
+    }
+
+    /* Enable or Disable the reboot memory */
+    tmpreg |= (0x01 << HTS221_BOOT_BIT);
+
+    /* Write value to MEMS CTRL_REG2 regsister */
+    if (write_reg(HTS221_CTRL_REG2, tmpreg) != 0)
+    {
+      return 1;
+    }
+    
+    return 0;
+}
+
+/**
+ * @brief  Read HTS221 output register, and calculate the humidity
+ * @param  pfData the pointer to data output
+ * @retval 0 in case of success, an error code otherwise
+ */
+int HTS221Sensor::get_humidity(float* pfData)
+{
+  uint16_t uint16data = 0;
+
+  /* Read data from HTS221. */
+  if ( HTS221_Get_Humidity( (void *)this, &uint16data ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+
+  *pfData = ( float )uint16data / 10.0f;
+
+  return 0;
+}
+
+/**
+ * @brief  Read HTS221 output register, and calculate the temperature
+ * @param  pfData the pointer to data output
+ * @retval 0 in case of success, an error code otherwise
+ */
+int HTS221Sensor::get_temperature(float* pfData)
+{
+  int16_t int16data = 0;
+
+  /* Read data from HTS221. */
+  if ( HTS221_Get_Temperature( (void *)this, &int16data ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+
+  *pfData = ( float )int16data / 10.0f;
+
+  return 0;
+}
+
+/**
+ * @brief  Read HTS221 output register, and calculate the humidity
+ * @param  odr the pointer to the output data rate
+ * @retval 0 in case of success, an error code otherwise
+ */
+int HTS221Sensor::get_odr(float* odr)
+{
+  HTS221_Odr_et odr_low_level;
+
+  if ( HTS221_Get_Odr( (void *)this, &odr_low_level ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+
+  switch( odr_low_level )
+  {
+    case HTS221_ODR_ONE_SHOT:
+      *odr =  0.0f;
+      break;
+    case HTS221_ODR_1HZ     :
+      *odr =  1.0f;
+      break;
+    case HTS221_ODR_7HZ     :
+      *odr =  7.0f;
+      break;
+    case HTS221_ODR_12_5HZ  :
+      *odr = 12.5f;
+      break;
+    default                 :
+      *odr = -1.0f;
+      return 1;
+  }
+
+  return 0;
+}
+
+/**
+ * @brief  Set ODR
+ * @param  odr the output data rate to be set
+ * @retval 0 in case of success, an error code otherwise
+ */
+int HTS221Sensor::set_odr(float odr)
+{
+  HTS221_Odr_et new_odr;
+
+  new_odr = ( odr <= 1.0f ) ? HTS221_ODR_1HZ
+          : ( odr <= 7.0f ) ? HTS221_ODR_7HZ
+          :                   HTS221_ODR_12_5HZ;
+
+  if ( HTS221_Set_Odr( (void *)this, new_odr ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+
+  return 0;
+}
+
+
+/**
+ * @brief Read the data from register
+ * @param reg register address
+ * @param data register data
+ * @retval 0 in case of success
+ * @retval 1 in case of failure
+ */
+int HTS221Sensor::read_reg( uint8_t reg, uint8_t *data )
+{
+
+  if ( HTS221_read_reg( (void *)this, reg, 1, data ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+
+  return 0;
+}
+
+/**
+ * @brief Write the data to register
+ * @param reg register address
+ * @param data register data
+ * @retval 0 in case of success
+ * @retval 1 in case of failure
+ */
+int HTS221Sensor::write_reg( uint8_t reg, uint8_t data )
+{
+
+  if ( HTS221_write_reg( (void *)this, reg, 1, &data ) == HTS221_ERROR )
+  {
+    return 1;
+  }
+
+  return 0;
+}
+
+uint8_t HTS221_io_write( void *handle, uint8_t WriteAddr, uint8_t *pBuffer, uint16_t nBytesToWrite )
+{
+  return ((HTS221Sensor *)handle)->io_write(pBuffer, WriteAddr, nBytesToWrite);
+}
+
+uint8_t HTS221_io_read( void *handle, uint8_t ReadAddr, uint8_t *pBuffer, uint16_t nBytesToRead )
+{
+  return ((HTS221Sensor *)handle)->io_read(pBuffer, ReadAddr, nBytesToRead);
+}