Added code to manage Orientation, FreeFall and Motion Detection. Data is also available via IRQ.
Dependents: Test_FRDM_MMA8451Q AccelTest FRDM-KL46-Template KL25Z_Demo ... more
Fork of MMA8451Q by
MMA8451Q.h
- Committer:
- clemente
- Date:
- 2013-05-28
- Revision:
- 7:ba0016258d5d
- Parent:
- 6:c52175d13e0a
- Child:
- 8:7e6013f11b10
File content as of revision 7:ba0016258d5d:
/* Copyright (c) 2010-2011 mbed.org, MIT License * * 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 * * @code * #include "mbed.h" * #include "MMA8451Q.h" * * #define MMA8451_I2C_ADDRESS (0x1d<<1) * * int main(void) { * * MMA8451Q acc(P_E25, P_E24, MMA8451_I2C_ADDRESS); * PwmOut rled(LED_RED); * PwmOut gled(LED_GREEN); * PwmOut bled(LED_BLUE); * * while (true) { * rled = 1.0 - abs(acc.getAccX()); * gled = 1.0 - abs(acc.getAccY()); * bled = 1.0 - abs(acc.getAccZ()); * wait(0.1); * } * } * @endcode */ // Z-Lock Threshold Angles #define Z_LOCKOUT_14 0 // Angle to 14° #define Z_LOCKOUT_18 1 // Angle to 18° #define Z_LOCKOUT_21 2 // Angle to 21° #define Z_LOCKOUT_25 3 // Angle to 25° #define Z_LOCKOUT_29 4 // Angle to 29° #define Z_LOCKOUT_33 5 // Angle to 33° #define Z_LOCKOUT_37 6 // Angle to 37° #define Z_LOCKOUT_42 7 // Angle to 42° // Back/Front Orientation Definition #define Z_BKFR_80 0 // Back and Front trip angle #define Z_BKFR_75 1 // Back and Front trip angle #define Z_BKFR_70 2 // Back and Front trip angle #define Z_BKFR_65 3 // Back and Front trip angle // Threshold Angle Thresholds Lookup Table #define PL_THS_15 0x07 // Set Threshold to 15° #define PL_THS_20 0x09 // Set Threshold to 20° #define PL_THS_30 0x0C // Set Threshold to 30° #define PL_THS_35 0x0D // Set Threshold to 35° #define PL_THS_40 0x0F // Set Threshold to 40° #define PL_THS_45 0x10 // Set Threshold to 45° #define PL_THS_55 0x13 // Set Threshold to 55° #define PL_THS_60 0x14 // Set Threshold to 60° #define PL_THS_70 0x17 // Set Threshold to 70° #define PL_THS_75 0x19 // Set Threshold to 75° // Trip Angles with Hysteresis for 45° Angle #define PL_HYS_0 0x00 // Set Hysteresis to ±0° #define PL_HYS_4 0x01 // Set Hysteresis to ±4° #define PL_HYS_7 0x02 // Set Hysteresis to ±7° #define PL_HYS_11 0x03 // Set Hysteresis to ±11° #define PL_HYS_14 0x04 // Set Hysteresis to ±14° #define PL_HYS_17 0x05 // Set Hysteresis to ±17° #define PL_HYS_21 0x06 // Set Hysteresis to ±21° #define PL_HYS_24 0x07 // Set Hysteresis to ±24° class MMA8451Q { public: /** * MMA8451Q constructor * * @param sda SDA pin * @param sdl SCL pin * @param addr addr of the I2C peripheral */ MMA8451Q(PinName sda, PinName scl, int addr); /** * MMA8451Q destructor */ ~MMA8451Q(); /** * Get the value of the WHO_AM_I register * * @returns WHO_AM_I value */ uint8_t getWhoAmI(); /** * Get X axis acceleration * * @returns X axis acceleration */ float getAccX(); /** * Get Y axis acceleration * * @returns Y axis acceleration */ float getAccY(); /** * Get Z axis acceleration * * @returns Z axis acceleration */ float getAccZ(); /** * Get XYZ axis acceleration * * @param res array where acceleration data will be stored */ void getAccAllAxis(float * res); void FreFallDetection( void(*fptr)(void)); void MotionDetection( void(*fptr)(void)); void OrientationDetect( void(*fptr)(void), unsigned int Z_LockOut, unsigned int Z_BkFr, unsigned int PL_Thsld, unsigned int PL_Hyst); void OrientationDetect( void(*fptr)(void)); private: I2C m_i2c; int m_addr; void readRegs(int addr, uint8_t * data, int len); void writeRegs(uint8_t * data, int len); int16_t getAccAxis(uint8_t addr); void Standby( void); void Active( void); void Fall_IRQ( void); void Motion_IRQ( void); void Orientation_IRQ( void); }; #endif