My version of the library for this accelerometer. It works on 800Hz data rate.
Fork of MMA8451Q by
MMA8451Q.h@1:204db61f9c8f, 2014-08-19 (annotated)
- Committer:
- B50132
- Date:
- Tue Aug 19 15:05:55 2014 +0000
- Revision:
- 1:204db61f9c8f
- Parent:
- 0:7c9ab58f6af3
modified contents with another library doing the same thing.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
quevedo | 0:7c9ab58f6af3 | 1 | /* Copyright (c) 2010-2011 mbed.org, MIT License |
quevedo | 0:7c9ab58f6af3 | 2 | * |
quevedo | 0:7c9ab58f6af3 | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
quevedo | 0:7c9ab58f6af3 | 4 | * and associated documentation files (the "Software"), to deal in the Software without |
quevedo | 0:7c9ab58f6af3 | 5 | * restriction, including without limitation the rights to use, copy, modify, merge, publish, |
quevedo | 0:7c9ab58f6af3 | 6 | * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the |
quevedo | 0:7c9ab58f6af3 | 7 | * Software is furnished to do so, subject to the following conditions: |
quevedo | 0:7c9ab58f6af3 | 8 | * |
quevedo | 0:7c9ab58f6af3 | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
quevedo | 0:7c9ab58f6af3 | 10 | * substantial portions of the Software. |
quevedo | 0:7c9ab58f6af3 | 11 | * |
quevedo | 0:7c9ab58f6af3 | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
quevedo | 0:7c9ab58f6af3 | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
quevedo | 0:7c9ab58f6af3 | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
quevedo | 0:7c9ab58f6af3 | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
quevedo | 0:7c9ab58f6af3 | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
quevedo | 0:7c9ab58f6af3 | 17 | */ |
quevedo | 0:7c9ab58f6af3 | 18 | |
quevedo | 0:7c9ab58f6af3 | 19 | #ifndef MMA8451Q_H |
quevedo | 0:7c9ab58f6af3 | 20 | #define MMA8451Q_H |
quevedo | 0:7c9ab58f6af3 | 21 | |
quevedo | 0:7c9ab58f6af3 | 22 | #include "mbed.h" |
quevedo | 0:7c9ab58f6af3 | 23 | |
quevedo | 0:7c9ab58f6af3 | 24 | /** |
B50132 | 1:204db61f9c8f | 25 | * MMA8451Q accelerometer example |
quevedo | 0:7c9ab58f6af3 | 26 | * |
quevedo | 0:7c9ab58f6af3 | 27 | * @code |
quevedo | 0:7c9ab58f6af3 | 28 | * #include "mbed.h" |
quevedo | 0:7c9ab58f6af3 | 29 | * #include "MMA8451Q.h" |
quevedo | 0:7c9ab58f6af3 | 30 | * |
B50132 | 1:204db61f9c8f | 31 | * #define MMA8451_I2C_ADDRESS (0x1d<<1) |
B50132 | 1:204db61f9c8f | 32 | * |
quevedo | 0:7c9ab58f6af3 | 33 | * int main(void) { |
quevedo | 0:7c9ab58f6af3 | 34 | * |
B50132 | 1:204db61f9c8f | 35 | * MMA8451Q acc(P_E25, P_E24, MMA8451_I2C_ADDRESS); |
quevedo | 0:7c9ab58f6af3 | 36 | * PwmOut rled(LED_RED); |
quevedo | 0:7c9ab58f6af3 | 37 | * PwmOut gled(LED_GREEN); |
quevedo | 0:7c9ab58f6af3 | 38 | * PwmOut bled(LED_BLUE); |
B50132 | 1:204db61f9c8f | 39 | * |
B50132 | 1:204db61f9c8f | 40 | * while (true) { |
B50132 | 1:204db61f9c8f | 41 | * rled = 1.0 - abs(acc.getAccX()); |
B50132 | 1:204db61f9c8f | 42 | * gled = 1.0 - abs(acc.getAccY()); |
B50132 | 1:204db61f9c8f | 43 | * bled = 1.0 - abs(acc.getAccZ()); |
B50132 | 1:204db61f9c8f | 44 | * wait(0.1); |
quevedo | 0:7c9ab58f6af3 | 45 | * } |
quevedo | 0:7c9ab58f6af3 | 46 | * } |
quevedo | 0:7c9ab58f6af3 | 47 | * @endcode |
quevedo | 0:7c9ab58f6af3 | 48 | */ |
quevedo | 0:7c9ab58f6af3 | 49 | class MMA8451Q |
quevedo | 0:7c9ab58f6af3 | 50 | { |
quevedo | 0:7c9ab58f6af3 | 51 | public: |
quevedo | 0:7c9ab58f6af3 | 52 | /** |
quevedo | 0:7c9ab58f6af3 | 53 | * MMA8451Q constructor |
quevedo | 0:7c9ab58f6af3 | 54 | * |
quevedo | 0:7c9ab58f6af3 | 55 | * @param sda SDA pin |
quevedo | 0:7c9ab58f6af3 | 56 | * @param sdl SCL pin |
B50132 | 1:204db61f9c8f | 57 | * @param addr addr of the I2C peripheral |
quevedo | 0:7c9ab58f6af3 | 58 | */ |
B50132 | 1:204db61f9c8f | 59 | MMA8451Q(PinName sda, PinName scl, int addr); |
quevedo | 0:7c9ab58f6af3 | 60 | |
quevedo | 0:7c9ab58f6af3 | 61 | /** |
quevedo | 0:7c9ab58f6af3 | 62 | * MMA8451Q destructor |
quevedo | 0:7c9ab58f6af3 | 63 | */ |
quevedo | 0:7c9ab58f6af3 | 64 | ~MMA8451Q(); |
quevedo | 0:7c9ab58f6af3 | 65 | |
quevedo | 0:7c9ab58f6af3 | 66 | /** |
B50132 | 1:204db61f9c8f | 67 | * Get the value of the WHO_AM_I register |
B50132 | 1:204db61f9c8f | 68 | * |
B50132 | 1:204db61f9c8f | 69 | * @returns WHO_AM_I value |
B50132 | 1:204db61f9c8f | 70 | */ |
B50132 | 1:204db61f9c8f | 71 | uint8_t getWhoAmI(); |
B50132 | 1:204db61f9c8f | 72 | |
B50132 | 1:204db61f9c8f | 73 | /** |
B50132 | 1:204db61f9c8f | 74 | * Get X axis acceleration |
B50132 | 1:204db61f9c8f | 75 | * |
B50132 | 1:204db61f9c8f | 76 | * @returns X axis acceleration |
B50132 | 1:204db61f9c8f | 77 | */ |
B50132 | 1:204db61f9c8f | 78 | float getAccX(); |
B50132 | 1:204db61f9c8f | 79 | |
B50132 | 1:204db61f9c8f | 80 | /** |
B50132 | 1:204db61f9c8f | 81 | * Get Y axis acceleration |
B50132 | 1:204db61f9c8f | 82 | * |
B50132 | 1:204db61f9c8f | 83 | * @returns Y axis acceleration |
B50132 | 1:204db61f9c8f | 84 | */ |
B50132 | 1:204db61f9c8f | 85 | float getAccY(); |
B50132 | 1:204db61f9c8f | 86 | |
B50132 | 1:204db61f9c8f | 87 | /** |
B50132 | 1:204db61f9c8f | 88 | * Get Z axis acceleration |
B50132 | 1:204db61f9c8f | 89 | * |
B50132 | 1:204db61f9c8f | 90 | * @returns Z axis acceleration |
B50132 | 1:204db61f9c8f | 91 | */ |
B50132 | 1:204db61f9c8f | 92 | float getAccZ(); |
B50132 | 1:204db61f9c8f | 93 | |
B50132 | 1:204db61f9c8f | 94 | /** |
B50132 | 1:204db61f9c8f | 95 | * Get XYZ axis acceleration |
quevedo | 0:7c9ab58f6af3 | 96 | * |
quevedo | 0:7c9ab58f6af3 | 97 | * @param res array where acceleration data will be stored |
quevedo | 0:7c9ab58f6af3 | 98 | */ |
B50132 | 1:204db61f9c8f | 99 | void getAccAllAxis(float * res); |
quevedo | 0:7c9ab58f6af3 | 100 | |
quevedo | 0:7c9ab58f6af3 | 101 | private: |
quevedo | 0:7c9ab58f6af3 | 102 | I2C m_i2c; |
B50132 | 1:204db61f9c8f | 103 | int m_addr; |
quevedo | 0:7c9ab58f6af3 | 104 | void readRegs(int addr, uint8_t * data, int len); |
quevedo | 0:7c9ab58f6af3 | 105 | void writeRegs(uint8_t * data, int len); |
B50132 | 1:204db61f9c8f | 106 | int16_t getAccAxis(uint8_t addr); |
quevedo | 0:7c9ab58f6af3 | 107 | |
quevedo | 0:7c9ab58f6af3 | 108 | }; |
quevedo | 0:7c9ab58f6af3 | 109 | |
B50132 | 1:204db61f9c8f | 110 | #endif |