class IMU nucleo
Dependents: Coupe-Robotique-FIP-Main
Fork of IMU_FIP by
Diff: Components/LPS25H/lps25.cpp
- Revision:
- 0:528e23a13fb7
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/Components/LPS25H/lps25.cpp Thu Apr 09 17:08:14 2015 +0000 @@ -0,0 +1,213 @@ +/** +****************************************************************************** +* @file x_cube_mems_lps25.cpp +* @author AST / EST +* @version V0.0.1 +* @date 1-December-2014 +* @brief Implementation file for component LPS25H +****************************************************************************** +* @attention +* +* <h2><center>© COPYRIGHT(c) 2014 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 "mbed.h" +#include "lps25h.h" +#include "lps25h_platform.h" + +/* Methods -------------------------------------------------------------------*/ + +/** + * @brief Read LPS25H output register, and calculate the pressure in mbar. + * @param float *pressure. Pressure value in mbar. + * @retval LPS25H_ERROR or LPS25H_OK. + */ +void LPS25H::GetPressure(float* pfData) +{ + + uint32_t raw_press = 0; + + if(isInitialized()==0) + { + pfData = 0; + return; + } + + ReadRawPressure(&raw_press); + + /* return the built value */ + //tempInt = raw_press / 4096; + + *pfData = (float)raw_press /4096.0f; +} + +/** + * @brief Read LPS25H output register, and calculate the raw pressure. + * @param uint32_t: raw_press. Pressure raw value. + * @retval LPS25H_ERROR or LPS25H_OK. + */ +void LPS25H::ReadRawPressure(uint32_t *raw_press) +{ + uint8_t buffer[3], i; + uint32_t tempVal=0; + int ret; + + /* Read the register content */ + //PRESSURE_IO_Read(buffer, LPS25H_SlaveAddress, LPS25H_PRESS_POUT_XL_ADDR+0x80, 3); + ret = dev_i2c.i2c_read(buffer, LPS25H_ADDRESS_HIGH, LPS25H_PRESS_POUT_XL_ADDR+0x80, 3); + + if (ret == 0) + { + /* Build the raw data */ + for (i = 0 ; i < 3 ; i++) + tempVal |= (((uint32_t) buffer[i]) << (8 * i)); + + /* convert the 2's complement 24 bit to 2's complement 32 bit */ + if (tempVal & 0x00800000) + tempVal |= 0xFF000000; + + /* return the built value */ + *raw_press = ((uint32_t) tempVal); + } +} + +/** + * @brief Read ID address of HTS221 + * @param Device ID address + * @retval ID name + */ +uint8_t LPS25H::ReadID(void) +{ + uint8_t tmp; + + /* Read the register content */ + int ret; + //PRESSURE_IO_Read(&tmp, LPS25H_SlaveAddress, LPS25H_WHO_AM_I_ADDR, 1); + ret = dev_i2c.i2c_read(&tmp, LPS25H_ADDRESS_HIGH, LPS25H_WHO_AM_I_ADDR, 1); + + /* Return the ID */ + return ((ret == 0) ? (uint8_t)tmp : 0); +} + +/** + * @brief Set HTS221 Initialization. + * @param InitStruct: it contains the configuration setting for the HTS221. + * @retval None + */ +void LPS25H::Init() { + int ret; + uint8_t tmp1 = 0x00; + + Power_ON(); + + //PRESSURE_IO_Read(&tmp1, LPS25H_SlaveAddress, LPS25H_CTRL_REG1_ADDR, 1); + ret = dev_i2c.i2c_read(&tmp1, LPS25H_ADDRESS_HIGH, LPS25H_CTRL_REG1_ADDR, 1); + + if (ret == 0) + { + /* Output Data Rate selection */ + tmp1 &= ~(LPS25H_ODR_MASK); + tmp1 |= LPS25H_ODR_1Hz; + + /* Interrupt circuit selection */ + tmp1 &= ~(LPS25H_DIFF_EN_MASK); + tmp1 |= LPS25H_DIFF_ENABLE; + + /* Block Data Update selection */ + tmp1 &= ~(LPS25H_BDU_MASK); + tmp1 |= LPS25H_BDU_CONT; + + /* Serial Interface Mode selection */ + tmp1 &= ~(LPS25H_SPI_SIM_MASK); + tmp1 |= LPS25H_SPI_SIM_3W; + + //PRESSURE_IO_Write(&tmp1, LPS25H_SlaveAddress, LPS25H_CTRL_REG1_ADDR, 1); + ret = dev_i2c.i2c_write(&tmp1, LPS25H_ADDRESS_HIGH, LPS25H_CTRL_REG1_ADDR, 1); + } + + if (ret == 0) + { + //PRESSURE_IO_Read(&tmp1, LPS25H_SlaveAddress, LPS25H_RES_CONF_ADDR, 1); + ret = dev_i2c.i2c_read(&tmp1, LPS25H_ADDRESS_HIGH, LPS25H_RES_CONF_ADDR, 1); + } + + if (ret == 0) + { + /* Pressure Res selection */ + tmp1 &= ~(LPS25H_P_RES_MASK); + tmp1 |= LPS25H_P_RES_AVG_32; + + /* Temperature Res selection */ + tmp1 &= ~(LPS25H_T_RES_MASK); + tmp1 |= LPS25H_T_RES_AVG_16; + + //PRESSURE_IO_Write(&tmp1, LPS25H_SlaveAddress, LPS25H_RES_CONF_ADDR, 1); + ret = dev_i2c.i2c_write(&tmp1, LPS25H_ADDRESS_HIGH, LPS25H_RES_CONF_ADDR, 1); + } + + if (ret == 0) + { + if(ReadID() == I_AM_LPS25H) + { + Lps25hInitialized = 1; + //ret = HUM_TEMP_OK; + } + } + + return; +} + +int LPS25H::Power_ON() { + uint8_t tmpreg; + int ret; + + /* Read the register content */ + //PRESSURE_IO_Read(&tmpreg, LPS25H_SlaveAddress, LPS25H_CTRL_REG1_ADDR, 1); + ret = dev_i2c.i2c_read(&tmpreg, 0xBA, 0x20, 1); + + /* Set the power down bit */ + tmpreg |= LPS25H_MODE_ACTIVE; + + /* Write register */ + //PRESSURE_IO_Write(&tmpreg, LPS25H_SlaveAddress, LPS25H_CTRL_REG1_ADDR, 1); + ret = dev_i2c.i2c_write(&tmpreg, LPS25H_ADDRESS_HIGH, LPS25H_CTRL_REG1_ADDR, 1); + return ret; + +} + +int LPS25H::LPS25H_Calibration() { + + int ret = 0; + + if(Lps25hInitialized == 1) + { + return 1; //TODO: Error Codes definitions + } + + return ret; +}