Diff: sensors/LPS22HB/LPS22HBSensor.cpp

Revision:

18:a15bfe7aaebd

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/sensors/LPS22HB/LPS22HBSensor.cpp	Sun Dec 16 13:53:42 2018 +0000
@@ -0,0 +1,410 @@
+/**
+ ******************************************************************************
+ * @file    LPS22HBSensor.cpp
+ * @author  CLab
+ * @version V1.0.0
+ * @date    5 August 2016
+ * @brief   Implementation of an LPS22HB Pressure 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 "LPS22HBSensor.h"
+
+
+/* Class Implementation ------------------------------------------------------*/
+
+LPS22HBSensor::LPS22HBSensor(SPI *spi, PinName cs_pin, PinName int_pin, SPI_type_t spi_type)  : _dev_spi(spi), _cs_pin(cs_pin), _int_pin(int_pin), _spi_type(spi_type)
+{
+    assert (spi);
+    if (cs_pin == NC) 
+    {
+        printf ("ERROR LPS22HBSensor CS MUST NOT BE NC\n\r");       
+        _dev_spi = NULL;
+        _dev_i2c=NULL;
+        return;
+    }       
+
+    _cs_pin = 1;    
+    _dev_i2c=NULL;    
+    
+    if (_spi_type == SPI3W) LPS22HB_Set_SpiInterface ((void *)this, LPS22HB_SPI_3_WIRE);
+    else if (_spi_type == SPI4W) LPS22HB_Set_SpiInterface ((void *)this, LPS22HB_SPI_4_WIRE);
+    
+    LPS22HB_Set_I2C ((void *)this, LPS22HB_DISABLE);
+}
+
+/** Constructor
+ * @param i2c object of an helper class which handles the I2C peripheral
+ * @param address the address of the component's instance
+ */
+LPS22HBSensor::LPS22HBSensor(DevI2C *i2c, uint8_t address, PinName int_pin) : 
+                            _dev_i2c(i2c), _address(address), _cs_pin(NC), _int_pin(int_pin)
+{
+    assert (i2c);
+    _dev_spi = NULL;
+    LPS22HB_Set_I2C ((void *)this, LPS22HB_ENABLE);         
+};
+
+/**
+ * @brief     Initializing the component.
+ * @param[in] init pointer to device specific initalization structure.
+ * @retval    "0" in case of success, an error code otherwise.
+ */
+int LPS22HBSensor::init(void *init)
+{
+  if ( LPS22HB_Set_PowerMode( (void *)this, LPS22HB_LowPower) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  /* Power down the device */
+  if ( LPS22HB_Set_Odr( (void *)this, LPS22HB_ODR_ONE_SHOT ) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  /* Disable low-pass filter on LPS22HB pressure data */
+  if( LPS22HB_Set_LowPassFilter( (void *)this, LPS22HB_DISABLE) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  /* Set low-pass filter cutoff configuration*/
+  if( LPS22HB_Set_LowPassFilterCutoff( (void *)this, LPS22HB_ODR_9) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  /* Set block data update mode */
+  if ( LPS22HB_Set_Bdu( (void *)this, LPS22HB_BDU_NO_UPDATE ) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  /* Set automatic increment for multi-byte read/write */
+  if( LPS22HB_Set_AutomaticIncrementRegAddress( (void *)this, LPS22HB_ENABLE) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  _is_enabled = 0;
+  _last_odr = 25.0f;
+  
+  return 0;
+}
+
+
+/**
+ * @brief  Enable LPS22HB
+ * @retval 0 in case of success, an error code otherwise
+ */
+int LPS22HBSensor::enable(void)
+{
+  /* Check if the component is already enabled */
+  if ( _is_enabled == 1 )
+  {
+    return 0;
+  }
+  
+  if(Set_ODR_When_Enabled(_last_odr) == 1)
+  {
+    return 1;
+  }
+  
+  _is_enabled = 1;
+
+  return 0;
+}
+
+/**
+ * @brief  Disable LPS22HB
+ * @retval 0 in case of success, an error code otherwise
+ */
+int LPS22HBSensor::disable(void)
+{
+  /* Check if the component is already disabled */
+  if ( _is_enabled == 0 )
+  {
+    return 0;
+  }
+  
+  /* Power down the device */
+  if ( LPS22HB_Set_Odr( (void *)this, LPS22HB_ODR_ONE_SHOT ) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+  
+  _is_enabled = 0;
+
+  return 0;
+}
+
+/**
+ * @brief  Read ID address of LPS22HB
+ * @param  id the pointer where the ID of the device is stored
+ * @retval 0 in case of success, an error code otherwise
+ */
+int LPS22HBSensor::read_id(uint8_t *id)
+{
+  if(!id)
+  { 
+    return 1;
+  }
+ 
+  /* Read WHO AM I register */
+  if ( LPS22HB_Get_DeviceID( (void *)this, id ) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  return 0;
+}
+
+/**
+ * @brief  Reboot memory content of LPS22HB
+ * @param  None
+ * @retval 0 in case of success, an error code otherwise
+ */
+int LPS22HBSensor::reset(void)
+{
+  /* Read WHO AM I register */
+  if ( LPS22HB_MemoryBoot((void *)this) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  return 0;
+}
+
+/**
+ * @brief  Read LPS22HB output register, and calculate the pressure in mbar
+ * @param  pfData the pressure value in mbar
+ * @retval 0 in case of success, an error code otherwise
+ */
+int LPS22HBSensor::get_pressure(float* pfData)
+{
+  int32_t int32data = 0;
+
+  /* Read data from LPS22HB. */
+  if ( LPS22HB_Get_Pressure( (void *)this, &int32data ) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  *pfData = ( float )int32data / 100.0f;
+
+  return 0;
+}
+
+/**
+ * @brief  Read LPS22HB output register, and calculate the temperature
+ * @param  pfData the temperature value
+ * @retval 0 in case of success, an error code otherwise
+ */
+int LPS22HBSensor::get_temperature(float *pfData)
+{
+  int16_t int16data = 0;
+
+  /* Read data from LPS22HB. */
+  if ( LPS22HB_Get_Temperature( (void *)this, &int16data ) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  *pfData = ( float )int16data / 10.0f;
+
+  return 0;
+}
+
+/**
+ * @brief  Read LPS22HB output data rate
+ * @param  odr the pointer to the output data rate
+ * @retval 0 in case of success, an error code otherwise
+ */
+int LPS22HBSensor::get_odr(float* odr)
+{
+  LPS22HB_Odr_et odr_low_level;
+
+  if ( LPS22HB_Get_Odr( (void *)this, &odr_low_level ) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  switch( odr_low_level )
+  {
+    case LPS22HB_ODR_ONE_SHOT:
+      *odr = 0.0f;
+      break;
+    case LPS22HB_ODR_1HZ:
+      *odr = 1.0f;
+      break;
+    case LPS22HB_ODR_10HZ:
+      *odr = 10.0f;
+      break;
+    case LPS22HB_ODR_25HZ:
+      *odr = 25.0f;
+      break;
+    case LPS22HB_ODR_50HZ:
+      *odr = 50.0f;
+      break;
+    case LPS22HB_ODR_75HZ:
+      *odr = 75.0f;
+      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 LPS22HBSensor::set_odr(float odr)
+{
+  if(_is_enabled == 1)
+  {
+    if(Set_ODR_When_Enabled(odr) == 1)
+    {
+      return 1;
+    }
+  }
+  else
+  {
+    if(Set_ODR_When_Disabled(odr) == 1)
+    {
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+
+/**
+ * @brief Set the LPS22HB sensor output data rate when enabled
+ * @param odr the functional output data rate to be set
+ * @retval 0 in case of success
+ * @retval 1 in case of failure
+ */
+int LPS22HBSensor::Set_ODR_When_Enabled( float odr )
+{
+  LPS22HB_Odr_et new_odr;
+
+  new_odr = ( odr <=  1.0f ) ? LPS22HB_ODR_1HZ
+          : ( odr <= 10.0f ) ? LPS22HB_ODR_10HZ
+          : ( odr <= 25.0f ) ? LPS22HB_ODR_25HZ
+          : ( odr <= 50.0f ) ? LPS22HB_ODR_50HZ
+          :                    LPS22HB_ODR_75HZ;
+
+  if ( LPS22HB_Set_Odr( (void *)this, new_odr ) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  if ( get_odr( &_last_odr ) == 1 )
+  {
+    return 1;
+  }
+
+  return 0;
+}
+
+/**
+ * @brief Set the LPS22HB sensor output data rate when disabled
+ * @param odr the functional output data rate to be set
+ * @retval 0 in case of success
+ * @retval 1 in case of failure
+ */
+int LPS22HBSensor::Set_ODR_When_Disabled( float odr )
+{
+  _last_odr = ( odr <=  1.0f ) ? 1.0f
+           : ( odr <= 10.0f ) ? 10.0f
+           : ( odr <= 25.0f ) ? 25.0f
+           : ( odr <= 50.0f ) ? 50.0f
+           :                    75.0f;
+
+  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 LPS22HBSensor::read_reg( uint8_t reg, uint8_t *data )
+{
+
+  if ( LPS22HB_read_reg( (void *)this, reg, 1, data ) == LPS22HB_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 LPS22HBSensor::write_reg( uint8_t reg, uint8_t data )
+{
+
+  if ( LPS22HB_write_reg( (void *)this, reg, 1, &data ) == LPS22HB_ERROR )
+  {
+    return 1;
+  }
+
+  return 0;
+}
+
+
+uint8_t LPS22HB_io_write( void *handle, uint8_t WriteAddr, uint8_t *pBuffer, uint16_t nBytesToWrite )
+{
+  return ((LPS22HBSensor *)handle)->io_write(pBuffer, WriteAddr, nBytesToWrite);
+}
+
+uint8_t LPS22HB_io_read( void *handle, uint8_t ReadAddr, uint8_t *pBuffer, uint16_t nBytesToRead )
+{
+  return ((LPS22HBSensor *)handle)->io_read(pBuffer, ReadAddr, nBytesToRead);
+}