My version of the library for this accelerometer. It works on 800Hz data rate.
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Diff: MMA8451Q.h
- Revision:
- 0:7c9ab58f6af3
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MMA8451Q.h Wed Jun 04 19:16:47 2014 +0000 @@ -0,0 +1,80 @@ +/* Copyright (c) 2010-2011 mbed.org, MIT License +* Copyright (c) 2014 Antonio Quevedo, UNICAMP +* +* Permission is hereby granted, free of charge, to any person obtaining a copy of this software +* and associated documentation files (the "Software"), to deal in the Software without +* restriction, including without limitation the rights to use, copy, modify, merge, publish, +* distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the +* Software is furnished to do so, subject to the following conditions: +* +* The above copyright notice and this permission notice shall be included in all copies or +* substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING +* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND +* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, +* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +*/ + +#ifndef MMA8451Q_H +#define MMA8451Q_H + +#include "mbed.h" + +/** +* MMA8451Q accelerometer example, 8-bit samples +* +* @code +* #include "mbed.h" +* #include "MMA8451Q.h" +* +* int main(void) { +* +* MMA8451Q acc(PTE25, PTE24); +* PwmOut rled(LED_RED); +* PwmOut gled(LED_GREEN); +* PwmOut bled(LED_BLUE); +* uint8_t data[3]; +* +* while (true) { + acc.getAccAllAxis(data); +* rled = 1.0 - abs(data[0]/128); +* gled = 1.0 - abs(data[0]/128); +* bled = 1.0 - abs(data[0]/128); +* wait(0.4); +* } +* } +* @endcode +*/ +class MMA8451Q +{ +public: + /** + * MMA8451Q constructor + * + * @param sda SDA pin + * @param sdl SCL pin + */ + MMA8451Q(PinName sda, PinName scl); + + /** + * MMA8451Q destructor + */ + ~MMA8451Q(); + + /** + * Get XYZ axis acceleration, 8-bits + * + * @param res array where acceleration data will be stored + */ + void getAccAllAxis(int16_t * res); + +private: + I2C m_i2c; + void readRegs(int addr, uint8_t * data, int len); + void writeRegs(uint8_t * data, int len); + +}; + +#endif \ No newline at end of file