MPL3115A2 Pressure sensor library
Dependents: FRDM-FXS-MULTI2-B_SensorShield_HelloWorld
MPL3115.cpp
- Committer:
- AswinSivakumar
- Date:
- 2017-04-26
- Revision:
- 1:423fad528a24
- Parent:
- 0:2cc0f6ef330f
File content as of revision 1:423fad528a24:
/* * Copyright (c) 2015 - 2016, Freescale Semiconductor, Inc. * Copyright 2016-2017 NXP * * Redistribution and use in source and binary forms, with or without modification, * are permitted provided that the following conditions are met: * * o Redistributions of source code must retain the above copyright notice, this list * of conditions and the following disclaimer. * * o 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. * * o Neither the name of the copyright holder 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. */ #include "MPL3115.h" #include "mbed.h" MPL3115::MPL3115(PinName sda, PinName scl) : MPL3115_i2c(sda,scl) { } void MPL3115::MPL3115_config(void) { char d[2]; d[0] = MPL3115_CTRL_REG1; //Puts device in Standby mode d[1] = 0x00; MPL3115_i2c.write(MPL3115_I2C_ADDRESS, d,2); d[0] = MPL3115_CTRL_REG1; //Puts device in Active mode and in altimeter mode d[1] = 0x81; MPL3115_i2c.write(MPL3115_I2C_ADDRESS, d, 2); } void MPL3115::acquire_MPL3115_data_Altitude_in_m(float * alt_data) { char data_bytes[7]; char d[1]; d[0]=MPL3115_STATUS; MPL3115_i2c.write(MPL3115_I2C_ADDRESS,d,1,true); // Read the 6 data bytes - LSB and MSB for X, Y and Z Axes. MPL3115_i2c.read(MPL3115_I2C_ADDRESS,data_bytes,5); alt_data[0]= (float)((short)((data_bytes[1] << 8 ) | data_bytes[2])) + (float)(data_bytes[3]>>4) * 0.0625; }