KX224.h

00001 /*****************************************************************************
00002   KX224_I2C.h
00003 
00004  Copyright (c) 2017 ROHM Co.,Ltd.
00005 
00006  Permission is hereby granted, free of charge, to any person obtaining a copy
00007  of this software and associated documentation files (the "Software"), to deal
00008  in the Software without restriction, including without limitation the rights
00009  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00010  copies of the Software, and to permit persons to whom the Software is
00011  furnished to do so, subject to the following conditions:
00012 
00013  The above copyright notice and this permission notice shall be included in
00014  all copies or substantial portions of the Software.
00015 
00016  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00017  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00018  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00019  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00020  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00021  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
00022  THE SOFTWARE.
00023 *
00024 *  KX224-1053 3 axis accelerometer library
00025 *
00026 *  @modified by Ren Boting
00027 *  @version 1.0
00028 *  @date    18-February-2019
00029 *
00030 *  Library for "KX224-1053 3 axis accelerometer library"
00031 *    https://www.rohm.co.jp/sensor-shield-support/accelerometer
00032 *
00033 */
00034 #ifndef _KX224_H_
00035 #define _KX224_H_
00036 
00037 #include "mbed.h"
00038 
00039 #define KX224_DEVICE_ADDRESS_1E   (0x1E << 1)    // 7bit Addrss
00040 #define KX224_DEVICE_ADDRESS_1F   (0x1F << 1)    // 7bit Address
00041 #define KX224_WAI_VAL             (0x2B)
00042 
00043 #define KX224_XOUT_L              (0x06)
00044 #define KX224_WHO_AM_I            (0x0F)
00045 #define KX224_CNTL1               (0x18)
00046 #define KX224_ODCNTL              (0x1B)
00047 
00048 #define KX224_CNTL1_TPE           (1 << 0)
00049 #define KX224_CNTL1_WUFE          (1 << 1)
00050 #define KX224_CNTL1_TDTE          (1 << 2)
00051 #define KX224_CNTL1_GSELMASK      (0x18)
00052 #define KX224_CNTL1_GSEL_8G       (0x00)
00053 #define KX224_CNTL1_GSEL_16G      (0x08)
00054 #define KX224_CNTL1_GSEL_32G      (0x10)
00055 #define KX224_CNTL1_DRDYE         (1 << 5)
00056 #define KX224_CNTL1_RES           (1 << 6)
00057 #define KX224_CNTL1_PC1           (1 << 7)
00058 
00059 #define KX224_ODCNTL_OSA_50HZ     (2)
00060 #define KX224_ODCNTL_LPRO         (1 << 6)
00061 #define KX224_IIR_BYPASS          (1 << 7)
00062 
00063 #define KX224_CNTL1_VAL           (KX224_CNTL1_RES | KX224_CNTL1_GSEL_8G)
00064 #define KX224_ODCNTL_VAL          (KX224_ODCNTL_OSA_50HZ)
00065 
00066 #ifdef _DEBUG
00067 #undef DEBUG_PRINT
00068 #define DEBUG_PRINT(...) printf(__VA_ARGS__)
00069 #else
00070 #define DEBUG_PRINT(...)
00071 #endif
00072 
00073 class KX224
00074 {
00075 public:
00076     /**
00077     * KX224 constructor
00078     *
00079     * @param sda SDA pin
00080     * @param sdl SCL pin
00081     * @param addr slave address of the I2C peripheral (default: 0x1E)
00082     */
00083     KX224(PinName sda, PinName scl, int slave_addr = KX224_DEVICE_ADDRESS_1E);
00084     /**
00085     * KX224 destructor
00086     */
00087     ~KX224();
00088     uint8_t initialize(void);
00089     void get_val(float *data);
00090 private:
00091     I2C m_i2c;
00092     int m_addr;
00093     uint16_t _g_sens;
00094     void write(uint8_t memory_address, char *data);
00095     void read(uint8_t memory_address, char *data, int size);
00096 };
00097 
00098 #endif // _KX224_H_