MMA8451Q.h

00001 /* Copyright (c) 2010-2011 mbed.org, MIT License
00002 * Copyright (c) 2014 Antonio Quevedo, UNICAMP
00003 *
00004 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
00005 * and associated documentation files (the "Software"), to deal in the Software without
00006 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
00007 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
00008 * Software is furnished to do so, subject to the following conditions:
00009 *
00010 * The above copyright notice and this permission notice shall be included in all copies or
00011 * substantial portions of the Software.
00012 *
00013 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
00014 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
00015 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
00016 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00017 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
00018 */
00019 
00020 #ifndef MMA8451Q_H
00021 #define MMA8451Q_H
00022 
00023 #include "mbed.h"
00024 
00025 /**
00026 * MMA8451Q accelerometer example, 8-bit samples
00027 *
00028 * @code
00029 * #include "mbed.h"
00030 * #include "MMA8451Q.h"
00031 * 
00032 * int main(void) {
00033 * 
00034 * MMA8451Q acc(PTE25, PTE24);
00035 * PwmOut rled(LED_RED);
00036 * PwmOut gled(LED_GREEN);
00037 * PwmOut bled(LED_BLUE);
00038 * uint8_t data[3];
00039 *
00040 *     while (true) {
00041           acc.getAccAllAxis(data);       
00042 *         rled = 1.0 - abs(data[0]/128);
00043 *         gled = 1.0 - abs(data[0]/128);
00044 *         bled = 1.0 - abs(data[0]/128);
00045 *         wait(0.4);
00046 *     }
00047 * }
00048 * @endcode
00049 */
00050 class MMA8451Q
00051 {
00052 public:
00053   /**
00054   * MMA8451Q constructor
00055   *
00056   * @param sda SDA pin
00057   * @param sdl SCL pin
00058   */
00059   MMA8451Q(PinName sda, PinName scl);
00060 
00061   /**
00062   * MMA8451Q destructor
00063   */
00064   ~MMA8451Q();
00065 
00066   /**
00067    * Get XYZ axis acceleration, 8-bits
00068    *
00069    * @param res array where acceleration data will be stored
00070    */
00071   void getAccAllAxis(int16_t * res);
00072 
00073 private:
00074   I2C m_i2c;
00075   void readRegs(int addr, uint8_t * data, int len);
00076   void writeRegs(uint8_t * data, int len);
00077 
00078 };
00079 
00080 #endif