Jim Carver / MMA8652

A basic library for the MMA8652 accelerometer, provides data in either floating point G's or as a signed 16 bit integer.

Dependents:   Hello_MMA8652 Multi-Sensor Buddi_Blueband Freescale_Multi-Sensor_Shield ... more

MMA8652.h@1:ff30cc4759b4, 2014-04-19 (annotated)

Committer:
JimCarver
Date:
Sat Apr 19 01:28:26 2014 +0000
Revision:
1:ff30cc4759b4
Parent:
0:3ae1e808e61c
Child:
2:29c2dd97ca95
Added features

Who changed what in which revision?

UserRevisionLine numberNew contents of line
JimCarver 1:ff30cc4759b4 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
JimCarver 1:ff30cc4759b4 2 *
JimCarver 1:ff30cc4759b4 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
JimCarver 1:ff30cc4759b4 4 * and associated documentation files (the "Software"), to deal in the Software without
JimCarver 1:ff30cc4759b4 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
JimCarver 1:ff30cc4759b4 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
JimCarver 1:ff30cc4759b4 7 * Software is furnished to do so, subject to the following conditions:
JimCarver 1:ff30cc4759b4 8 *
JimCarver 1:ff30cc4759b4 9 * The above copyright notice and this permission notice shall be included in all copies or
JimCarver 1:ff30cc4759b4 10 * substantial portions of the Software.
JimCarver 1:ff30cc4759b4 11 *
JimCarver 1:ff30cc4759b4 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
JimCarver 1:ff30cc4759b4 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
JimCarver 1:ff30cc4759b4 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
JimCarver 1:ff30cc4759b4 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
JimCarver 1:ff30cc4759b4 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
JimCarver 1:ff30cc4759b4 17 */
JimCarver 1:ff30cc4759b4 18
JimCarver 0:3ae1e808e61c 19 #ifndef MMA8652_H
JimCarver 0:3ae1e808e61c 20 #define MMA8652_H
JimCarver 0:3ae1e808e61c 21
JimCarver 0:3ae1e808e61c 22 #include "mbed.h"
JimCarver 0:3ae1e808e61c 23
JimCarver 0:3ae1e808e61c 24
JimCarver 0:3ae1e808e61c 25 // MMA8652 Slave Address
JimCarver 0:3ae1e808e61c 26 #define MMA8652_SLAVE_ADDR 0x3A
JimCarver 0:3ae1e808e61c 27
JimCarver 0:3ae1e808e61c 28 // MMA8652 internal register addresses
JimCarver 0:3ae1e808e61c 29 #define MMA8652_STATUS 0x00
JimCarver 1:ff30cc4759b4 30 #define MMA8652_OUT_X_MSB 0x01
JimCarver 0:3ae1e808e61c 31 #define MMA8652_WHOAMI 0x0D
JimCarver 0:3ae1e808e61c 32 #define MMA8652_XYZ_DATA_CFG 0x0E
JimCarver 0:3ae1e808e61c 33 #define MMA8652_CTRL_REG1 0x2A
JimCarver 0:3ae1e808e61c 34 #define MMA8652_WHOAMI_VAL 0x4A
JimCarver 0:3ae1e808e61c 35
JimCarver 0:3ae1e808e61c 36 class MMA8652
JimCarver 0:3ae1e808e61c 37 {
JimCarver 0:3ae1e808e61c 38 public:
JimCarver 0:3ae1e808e61c 39 /**
JimCarver 1:ff30cc4759b4 40 * MMA8652 constructor
JimCarver 0:3ae1e808e61c 41 *
JimCarver 0:3ae1e808e61c 42 * @param sda SDA pin
JimCarver 0:3ae1e808e61c 43 * @param sdl SCL pin
JimCarver 0:3ae1e808e61c 44 * @param addr addr of the I2C peripheral
JimCarver 0:3ae1e808e61c 45 */
JimCarver 0:3ae1e808e61c 46 MMA8652(PinName sda, PinName scl);
JimCarver 1:ff30cc4759b4 47
JimCarver 1:ff30cc4759b4 48 /**
JimCarver 1:ff30cc4759b4 49 * MMA8652 destructor
JimCarver 1:ff30cc4759b4 50 */
JimCarver 1:ff30cc4759b4 51 ~MMA8652();
JimCarver 1:ff30cc4759b4 52 /**
JimCarver 1:ff30cc4759b4 53 * Get XYZ axis acceleration in floating point G's
JimCarver 1:ff30cc4759b4 54 *
JimCarver 1:ff30cc4759b4 55 * @param res array where acceleration data will be stored
JimCarver 1:ff30cc4759b4 56 */
JimCarver 1:ff30cc4759b4 57 void ReadXYZ(float * a);
JimCarver 0:3ae1e808e61c 58
JimCarver 1:ff30cc4759b4 59 /**
JimCarver 1:ff30cc4759b4 60 * Get XYZ axis acceleration, signed 16 bit values
JimCarver 1:ff30cc4759b4 61 *
JimCarver 1:ff30cc4759b4 62 * @param res array where acceleration data will be stored
JimCarver 1:ff30cc4759b4 63 */
JimCarver 1:ff30cc4759b4 64 void ReadXYZraw(int16_t * d);
JimCarver 1:ff30cc4759b4 65 char getWhoAmI(void);
JimCarver 0:3ae1e808e61c 66
JimCarver 0:3ae1e808e61c 67 private:
JimCarver 0:3ae1e808e61c 68
JimCarver 0:3ae1e808e61c 69 I2C _i2c;
JimCarver 0:3ae1e808e61c 70 /** Set the device in active mode
JimCarver 0:3ae1e808e61c 71 */
JimCarver 0:3ae1e808e61c 72 void begin( void);
JimCarver 0:3ae1e808e61c 73
JimCarver 0:3ae1e808e61c 74 void RegRead( char reg, char * d, int len);
JimCarver 0:3ae1e808e61c 75
JimCarver 0:3ae1e808e61c 76 };
JimCarver 0:3ae1e808e61c 77
JimCarver 0:3ae1e808e61c 78 #endif