Garage Door Monitor and Opener
Dependencies: X_NUCLEO_COMMON ST_INTERFACES
LPS22HBSensor.h
00001 /** 00002 ****************************************************************************** 00003 * @file LPS22HBSensor.h 00004 * @author CLab 00005 * @version V1.0.0 00006 * @date 5 August 2016 00007 * @brief Abstract Class of an LPS22HB Pressure sensor. 00008 ****************************************************************************** 00009 * @attention 00010 * 00011 * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2> 00012 * 00013 * Redistribution and use in source and binary forms, with or without modification, 00014 * are permitted provided that the following conditions are met: 00015 * 1. Redistributions of source code must retain the above copyright notice, 00016 * this list of conditions and the following disclaimer. 00017 * 2. Redistributions in binary form must reproduce the above copyright notice, 00018 * this list of conditions and the following disclaimer in the documentation 00019 * and/or other materials provided with the distribution. 00020 * 3. Neither the name of STMicroelectronics nor the names of its contributors 00021 * may be used to endorse or promote products derived from this software 00022 * without specific prior written permission. 00023 * 00024 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 00025 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 00026 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00027 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE 00028 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 00029 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 00030 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER 00031 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 00032 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 00033 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00034 * 00035 ****************************************************************************** 00036 */ 00037 00038 00039 /* Prevent recursive inclusion -----------------------------------------------*/ 00040 00041 #ifndef __LPS22HBSensor_H__ 00042 #define __LPS22HBSensor_H__ 00043 00044 00045 /* Includes ------------------------------------------------------------------*/ 00046 00047 #include "DevI2C.h" 00048 #include "LPS22HB_driver.h" 00049 #include "PressureSensor.h" 00050 #include "TempSensor.h" 00051 #include <assert.h> 00052 00053 /* Class Declaration ---------------------------------------------------------*/ 00054 00055 /** 00056 * Abstract class of an LPS22HB Pressure sensor. 00057 */ 00058 class LPS22HBSensor : public PressureSensor, public TempSensor 00059 { 00060 public: 00061 00062 enum SPI_type_t {SPI3W, SPI4W}; 00063 LPS22HBSensor(SPI *spi, PinName cs_pin, PinName int_pin=NC, SPI_type_t spi_type=SPI4W); 00064 LPS22HBSensor(DevI2C *i2c, uint8_t address=LPS22HB_ADDRESS_HIGH, PinName int_pin=NC); 00065 virtual int init(void *init); 00066 virtual int read_id(uint8_t *id); 00067 virtual int get_pressure(float *pfData); 00068 virtual int get_temperature(float *pfData); 00069 int enable(void); 00070 int disable(void); 00071 int reset(void); 00072 int get_odr(float *odr); 00073 int set_odr(float odr); 00074 int read_reg(uint8_t reg, uint8_t *data); 00075 int write_reg(uint8_t reg, uint8_t data); 00076 00077 /** 00078 * @brief Utility function to read data. 00079 * @param pBuffer: pointer to data to be read. 00080 * @param RegisterAddr: specifies internal address register to be read. 00081 * @param NumByteToRead: number of bytes to be read. 00082 * @retval 0 if ok, an error code otherwise. 00083 */ 00084 uint8_t io_read(uint8_t* pBuffer, uint8_t RegisterAddr, uint16_t NumByteToRead) 00085 { 00086 if (_dev_spi) { 00087 /* Write Reg Address */ 00088 _dev_spi->lock(); 00089 _cs_pin = 0; 00090 if (_spi_type == SPI4W) { 00091 _dev_spi->write(RegisterAddr | 0x80); 00092 for (int i=0; i<NumByteToRead; i++) { 00093 *(pBuffer+i) = _dev_spi->write(0x00); 00094 } 00095 } else if (_spi_type == SPI3W){ 00096 /* Write RD Reg Address with RD bit*/ 00097 uint8_t TxByte = RegisterAddr | 0x80; 00098 _dev_spi->write((char *)&TxByte, 1, (char *)pBuffer, (int) NumByteToRead); 00099 } 00100 _cs_pin = 1; 00101 _dev_spi->unlock(); 00102 return 0; 00103 } 00104 if (_dev_i2c) return (uint8_t) _dev_i2c->i2c_read(pBuffer, _address, RegisterAddr, NumByteToRead); 00105 return 1; 00106 } 00107 00108 /** 00109 * @brief Utility function to write data. 00110 * @param pBuffer: pointer to data to be written. 00111 * @param RegisterAddr: specifies internal address register to be written. 00112 * @param NumByteToWrite: number of bytes to write. 00113 * @retval 0 if ok, an error code otherwise. 00114 */ 00115 uint8_t io_write(uint8_t* pBuffer, uint8_t RegisterAddr, uint16_t NumByteToWrite) 00116 { 00117 if (_dev_spi) { 00118 _dev_spi->lock(); 00119 _cs_pin = 0; 00120 int data = _dev_spi->write(RegisterAddr); 00121 _dev_spi->write((char *)pBuffer, (int) NumByteToWrite, NULL, 0); 00122 _cs_pin = 1; 00123 _dev_spi->unlock(); 00124 return data; 00125 } 00126 if (_dev_i2c) return (uint8_t) _dev_i2c->i2c_write(pBuffer, _address, RegisterAddr, NumByteToWrite); 00127 return 1; 00128 } 00129 00130 private: 00131 int Set_ODR_When_Enabled(float odr); 00132 int Set_ODR_When_Disabled(float odr); 00133 00134 /* Helper classes. */ 00135 DevI2C *_dev_i2c; 00136 SPI *_dev_spi; 00137 00138 /* Configuration */ 00139 uint8_t _address; 00140 DigitalOut _cs_pin; 00141 InterruptIn _int_pin; 00142 SPI_type_t _spi_type; 00143 00144 uint8_t _is_enabled; 00145 float _last_odr; 00146 }; 00147 00148 #ifdef __cplusplus 00149 extern "C" { 00150 #endif 00151 uint8_t LPS22HB_io_write( void *handle, uint8_t WriteAddr, uint8_t *pBuffer, uint16_t nBytesToWrite ); 00152 uint8_t LPS22HB_io_read( void *handle, uint8_t ReadAddr, uint8_t *pBuffer, uint16_t nBytesToRead ); 00153 #ifdef __cplusplus 00154 } 00155 #endif 00156 00157 #endif
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