Shahariar Hossain / microbit_ble_mouse

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

Dependents:   microbit_mouse_BLE_daybreak_version

Fork of MMA8652 by Jim Carver

MMA8652.h@3:62325c5fe8a8, 2018-05-27 (annotated)

Committer:
suntopbd
Date:
Sun May 27 17:17:26 2018 +0000
Revision:
3:62325c5fe8a8
Parent:
2:29c2dd97ca95 
ver 0.0.3 beta Accel ok, mouse pair ok, mouse movement and buttons not functional yet

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 // MMA8652 Slave Address
JimCarver 0:3ae1e808e61c 24 #define MMA8652_SLAVE_ADDR 0x3A
suntopbd 3:62325c5fe8a8 25 // MMA8653 internal register addresses
JimCarver 0:3ae1e808e61c 26 #define MMA8652_STATUS 0x00
JimCarver 1:ff30cc4759b4 27 #define MMA8652_OUT_X_MSB 0x01
JimCarver 0:3ae1e808e61c 28 #define MMA8652_WHOAMI 0x0D
JimCarver 0:3ae1e808e61c 29 #define MMA8652_XYZ_DATA_CFG 0x0E
suntopbd 3:62325c5fe8a8 30 #define MMA8652_CTRL_REG1 0x00
JimCarver 0:3ae1e808e61c 31 #define MMA8652_WHOAMI_VAL 0x4A
screamer 2:29c2dd97ca95 32 /**
suntopbd 3:62325c5fe8a8 33 * MMA865 Xtrinsic accelerometer on I2C
screamer 2:29c2dd97ca95 34 */
JimCarver 0:3ae1e808e61c 35 class MMA8652
JimCarver 0:3ae1e808e61c 36 {
JimCarver 0:3ae1e808e61c 37 public:
JimCarver 0:3ae1e808e61c 38 /**
screamer 2:29c2dd97ca95 39 * MMA8652 constructor
screamer 2:29c2dd97ca95 40 *
screamer 2:29c2dd97ca95 41 * @param sda SDA pin
screamer 2:29c2dd97ca95 42 * @param sdl SCL pin
screamer 2:29c2dd97ca95 43 */
JimCarver 0:3ae1e808e61c 44 MMA8652(PinName sda, PinName scl);
JimCarver 1:ff30cc4759b4 45
screamer 2:29c2dd97ca95 46 /**
screamer 2:29c2dd97ca95 47 * MMA8652 destructor
screamer 2:29c2dd97ca95 48 */
screamer 2:29c2dd97ca95 49 ~MMA8652();
JimCarver 0:3ae1e808e61c 50
screamer 2:29c2dd97ca95 51 /**
screamer 2:29c2dd97ca95 52 * Get XYZ axis acceleration in floating point G's
screamer 2:29c2dd97ca95 53 *
screamer 2:29c2dd97ca95 54 * @param res array where acceleration data will be stored
screamer 2:29c2dd97ca95 55 */
screamer 2:29c2dd97ca95 56 void ReadXYZ(float * a);
screamer 2:29c2dd97ca95 57
screamer 2:29c2dd97ca95 58 /**
screamer 2:29c2dd97ca95 59 * Get XYZ axis acceleration, signed 16 bit values
screamer 2:29c2dd97ca95 60 *
screamer 2:29c2dd97ca95 61 * @param res array where acceleration data will be stored
screamer 2:29c2dd97ca95 62 */
JimCarver 1:ff30cc4759b4 63 void ReadXYZraw(int16_t * d);
JimCarver 0:3ae1e808e61c 64
screamer 2:29c2dd97ca95 65 /**
screamer 2:29c2dd97ca95 66 * Get the value of the WHO_AM_I register
screamer 2:29c2dd97ca95 67 *
screamer 2:29c2dd97ca95 68 * @returns DEVICE_ID value == 0x3A
screamer 2:29c2dd97ca95 69 */
screamer 2:29c2dd97ca95 70 char getWhoAmI(void);
screamer 2:29c2dd97ca95 71
JimCarver 0:3ae1e808e61c 72 private:
JimCarver 0:3ae1e808e61c 73 I2C _i2c;
screamer 2:29c2dd97ca95 74
screamer 2:29c2dd97ca95 75 /**
screamer 2:29c2dd97ca95 76 * Set the device in active mode
screamer 2:29c2dd97ca95 77 */
JimCarver 0:3ae1e808e61c 78 void begin( void);
screamer 2:29c2dd97ca95 79
JimCarver 0:3ae1e808e61c 80 void RegRead( char reg, char * d, int len);
JimCarver 0:3ae1e808e61c 81
JimCarver 0:3ae1e808e61c 82 };
JimCarver 0:3ae1e808e61c 83
JimCarver 0:3ae1e808e61c 84 #endif