John Kernthaler / K64_FXOS8700

A class to fetch magnetometer and accelerometer data from the FXOS8700 on the K64F board

K64MagAcc.h@0:dfd48724e473, 2014-06-18 (annotated)

Committer:
dr_john
Date:
Wed Jun 18 17:12:40 2014 +0000
Revision:
0:dfd48724e473
First release

Who changed what in which revision?

UserRevisionLine numberNew contents of line
dr_john 0:dfd48724e473 1 /* Copyright (c) 2014 J Kernthaler MIT License
dr_john 0:dfd48724e473 2 *
dr_john 0:dfd48724e473 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
dr_john 0:dfd48724e473 4 * and associated documentation files (the "Software"), to deal in the Software without
dr_john 0:dfd48724e473 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
dr_john 0:dfd48724e473 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
dr_john 0:dfd48724e473 7 * Software is furnished to do so, subject to the following conditions:
dr_john 0:dfd48724e473 8 *
dr_john 0:dfd48724e473 9 * The above copyright notice and this permission notice shall be included in all copies or
dr_john 0:dfd48724e473 10 * substantial portions of the Software.
dr_john 0:dfd48724e473 11 *
dr_john 0:dfd48724e473 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
dr_john 0:dfd48724e473 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
dr_john 0:dfd48724e473 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
dr_john 0:dfd48724e473 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
dr_john 0:dfd48724e473 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
dr_john 0:dfd48724e473 17 */
dr_john 0:dfd48724e473 18 #ifndef K64MAGACC_H
dr_john 0:dfd48724e473 19 #define K64MAGACC_H
dr_john 0:dfd48724e473 20 #include "mbed.h"
dr_john 0:dfd48724e473 21
dr_john 0:dfd48724e473 22 const PinName SDA = PTE25;
dr_john 0:dfd48724e473 23 const PinName SDL = PTE24;
dr_john 0:dfd48724e473 24 const int FX_addr = (0x1D<<1);
dr_john 0:dfd48724e473 25
dr_john 0:dfd48724e473 26 class K64MagAcc
dr_john 0:dfd48724e473 27 {
dr_john 0:dfd48724e473 28 /** K64MagAcc class
dr_john 0:dfd48724e473 29 * Used for setting up and reading data from the FXOS8700Q device on the
dr_john 0:dfd48724e473 30 * K64F board.
dr_john 0:dfd48724e473 31 * Usage
dr_john 0:dfd48724e473 32 * Call the Update method to read data from the device
dr_john 0:dfd48724e473 33 * The data is made available through two float arrays Mag and Acc
dr_john 0:dfd48724e473 34 */
dr_john 0:dfd48724e473 35 public:
dr_john 0:dfd48724e473 36 /**
dr_john 0:dfd48724e473 37 * K64MagAcc constructor
dr_john 0:dfd48724e473 38 *
dr_john 0:dfd48724e473 39 * @param sda Pin name of the I2C sda connection
dr_john 0:dfd48724e473 40 * @param sdl Pin name of the sdl connection
dr_john 0:dfd48724e473 41 * @param addr Address of the device on the I2C bus
dr_john 0:dfd48724e473 42 * @note On the K64F board these parameters are hard wired, so you can leave them out to use the default settings
dr_john 0:dfd48724e473 43 */
dr_john 0:dfd48724e473 44 K64MagAcc(PinName sda = SDA, PinName sdl = SDL, int addr = FX_addr);
dr_john 0:dfd48724e473 45 void Update(void);
dr_john 0:dfd48724e473 46 uint8_t WhoAmI();
dr_john 0:dfd48724e473 47 int16_t MagData[3], AccData[3]; // raw data picked from data read
dr_john 0:dfd48724e473 48 float Mag[3], Acc[3]; // scaled values in micro-Tesla and g
dr_john 0:dfd48724e473 49 uint8_t Status;
dr_john 0:dfd48724e473 50
dr_john 0:dfd48724e473 51 private:
dr_john 0:dfd48724e473 52 void readRegs(int addr, uint8_t * data, int len) ;
dr_john 0:dfd48724e473 53 void writeRegs(uint8_t * data, int len);
dr_john 0:dfd48724e473 54 int16_t Unpick14(int);
dr_john 0:dfd48724e473 55 int16_t Unpick(int);
dr_john 0:dfd48724e473 56 void Scale(int16_t*, float*, float);
dr_john 0:dfd48724e473 57 void writeControl(uint8_t reg, uint8_t data);
dr_john 0:dfd48724e473 58 I2C i2c;
dr_john 0:dfd48724e473 59 int i2addr;
dr_john 0:dfd48724e473 60 uint8_t SensorData[13];
dr_john 0:dfd48724e473 61 };
dr_john 0:dfd48724e473 62
dr_john 0:dfd48724e473 63 #endif