Baktha S / MPL3115A2

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MPL3115.cpp@0:2cc0f6ef330f, 2016-01-23 (annotated)

Committer:
AswinSivakumar
Date:
Sat Jan 23 00:07:22 2016 +0000
Revision:
0:2cc0f6ef330f
Child:
1:117534dd5101
First commit

Who changed what in which revision?

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AswinSivakumar 0:2cc0f6ef330f 1 /* Copyright (c) 2015 NXP Semiconductors. MIT License
AswinSivakumar 0:2cc0f6ef330f 2 *
AswinSivakumar 0:2cc0f6ef330f 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
AswinSivakumar 0:2cc0f6ef330f 4 * and associated documentation files (the "Software"), to deal in the Software without
AswinSivakumar 0:2cc0f6ef330f 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
AswinSivakumar 0:2cc0f6ef330f 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
AswinSivakumar 0:2cc0f6ef330f 7 * Software is furnished to do so, subject to the following conditions:
AswinSivakumar 0:2cc0f6ef330f 8 *
AswinSivakumar 0:2cc0f6ef330f 9 * The above copyright notice and this permission notice shall be included in all copies or
AswinSivakumar 0:2cc0f6ef330f 10 * substantial portions of the Software.
AswinSivakumar 0:2cc0f6ef330f 11 *
AswinSivakumar 0:2cc0f6ef330f 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
AswinSivakumar 0:2cc0f6ef330f 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
AswinSivakumar 0:2cc0f6ef330f 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
AswinSivakumar 0:2cc0f6ef330f 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
AswinSivakumar 0:2cc0f6ef330f 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
AswinSivakumar 0:2cc0f6ef330f 17 */
AswinSivakumar 0:2cc0f6ef330f 18
AswinSivakumar 0:2cc0f6ef330f 19 #include "MPL3115.h"
AswinSivakumar 0:2cc0f6ef330f 20 #include "mbed.h"
AswinSivakumar 0:2cc0f6ef330f 21
AswinSivakumar 0:2cc0f6ef330f 22 MPL3115::MPL3115(PinName sda, PinName scl) : MPL3115_i2c(sda,scl)
AswinSivakumar 0:2cc0f6ef330f 23 {
AswinSivakumar 0:2cc0f6ef330f 24
AswinSivakumar 0:2cc0f6ef330f 25 }
AswinSivakumar 0:2cc0f6ef330f 26
AswinSivakumar 0:2cc0f6ef330f 27 void MPL3115::MPL3115_config(void)
AswinSivakumar 0:2cc0f6ef330f 28 {
AswinSivakumar 0:2cc0f6ef330f 29 char d[2];
AswinSivakumar 0:2cc0f6ef330f 30 d[0] = MPL3115_CTRL_REG1; //Puts device in Standby mode
AswinSivakumar 0:2cc0f6ef330f 31 d[1] = 0x00;
AswinSivakumar 0:2cc0f6ef330f 32 MPL3115_i2c.write(MPL3115_I2C_ADDRESS, d,2);
AswinSivakumar 0:2cc0f6ef330f 33
AswinSivakumar 0:2cc0f6ef330f 34
AswinSivakumar 0:2cc0f6ef330f 35 d[0] = MPL3115_CTRL_REG1; //Puts device in Active mode and in altimeter mode
AswinSivakumar 0:2cc0f6ef330f 36 d[1] = 0x81;
AswinSivakumar 0:2cc0f6ef330f 37 MPL3115_i2c.write(MPL3115_I2C_ADDRESS, d, 2);
AswinSivakumar 0:2cc0f6ef330f 38
AswinSivakumar 0:2cc0f6ef330f 39 }
AswinSivakumar 0:2cc0f6ef330f 40
AswinSivakumar 0:2cc0f6ef330f 41
AswinSivakumar 0:2cc0f6ef330f 42
AswinSivakumar 0:2cc0f6ef330f 43 void MPL3115::acquire_MPL3115_data_Altitude_in_m(float * alt_data)
AswinSivakumar 0:2cc0f6ef330f 44 {
AswinSivakumar 0:2cc0f6ef330f 45
AswinSivakumar 0:2cc0f6ef330f 46 char data_bytes[7];
AswinSivakumar 0:2cc0f6ef330f 47 char d[1];
AswinSivakumar 0:2cc0f6ef330f 48 d[0]=MPL3115_STATUS;
AswinSivakumar 0:2cc0f6ef330f 49 MPL3115_i2c.write(MPL3115_I2C_ADDRESS,d,1,true); // Read the 6 data bytes - LSB and MSB for X, Y and Z Axes.
AswinSivakumar 0:2cc0f6ef330f 50 MPL3115_i2c.read(MPL3115_I2C_ADDRESS,data_bytes,5);
AswinSivakumar 0:2cc0f6ef330f 51 alt_data[0]= (float)((short)((data_bytes[1] << 8 ) | data_bytes[2])) + (float)(data_bytes[3]>>4) * 0.0625;
AswinSivakumar 0:2cc0f6ef330f 52
AswinSivakumar 0:2cc0f6ef330f 53
AswinSivakumar 0:2cc0f6ef330f 54 }