NXP's MPL3115A2 Pressure sensor library
Dependents: FRDM-STBC-AGMP01_SensorStream RD-KL25Z-AGMP01_SensorStream RD-KL25Z-AGMP01_Nanosatelite RD-KL25Z-AGMP01_SensorStream ... more
Fork of MPL3115A2 by
MPL3115.cpp
00001 /* 00002 * Copyright (c) 2015 - 2016, Freescale Semiconductor, Inc. 00003 * Copyright 2016-2017 NXP 00004 * 00005 * Redistribution and use in source and binary forms, with or without modification, 00006 * are permitted provided that the following conditions are met: 00007 * 00008 * o Redistributions of source code must retain the above copyright notice, this list 00009 * of conditions and the following disclaimer. 00010 * 00011 * o Redistributions in binary form must reproduce the above copyright notice, this 00012 * list of conditions and the following disclaimer in the documentation and/or 00013 * other materials provided with the distribution. 00014 * 00015 * o Neither the name of the copyright holder nor the names of its 00016 * contributors may be used to endorse or promote products derived from this 00017 * software without specific prior written permission. 00018 * 00019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND 00020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 00021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 00022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR 00023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 00024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 00025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON 00026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 00027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00029 */ 00030 00031 #include "MPL3115.h" 00032 #include "mbed.h" 00033 00034 MPL3115::MPL3115(PinName sda, PinName scl) : MPL3115_i2c(sda,scl) 00035 { 00036 00037 } 00038 00039 void MPL3115::MPL3115_config(void) 00040 { 00041 char d[2]; 00042 d[0] = MPL3115_CTRL_REG1; //Puts device in Standby mode 00043 d[1] = 0x00; 00044 MPL3115_i2c.write(MPL3115_I2C_ADDRESS, d,2); 00045 00046 00047 d[0] = MPL3115_CTRL_REG1; //Puts device in Active mode and in altimeter mode 00048 d[1] = 0x81; 00049 MPL3115_i2c.write(MPL3115_I2C_ADDRESS, d, 2); 00050 00051 } 00052 00053 00054 00055 void MPL3115::acquire_MPL3115_data_Altitude_in_m(float * alt_data) 00056 { 00057 00058 char data_bytes[7]; 00059 char d[1]; 00060 d[0]=MPL3115_STATUS; 00061 MPL3115_i2c.write(MPL3115_I2C_ADDRESS,d,1,true); // Read the 6 data bytes - LSB and MSB for X, Y and Z Axes. 00062 MPL3115_i2c.read(MPL3115_I2C_ADDRESS,data_bytes,5); 00063 alt_data[0]= (float)((short)((data_bytes[1] << 8 ) | data_bytes[2])) + (float)(data_bytes[3]>>4) * 0.0625; 00064 00065 00066 }
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