complete
Dependencies: FatFileSystem mbed
Fork of SnakeSnakeGame by
MMA7660/MMA7660.h@0:8b08136c5edd, 2014-03-24 (annotated)
- Committer:
- pbhatnagar3
- Date:
- Mon Mar 24 17:48:19 2014 +0000
- Revision:
- 0:8b08136c5edd
3-D snake game for the mbed application board.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
pbhatnagar3 | 0:8b08136c5edd | 1 | /* Copyright (c) <year> <copyright holders>, MIT License |
pbhatnagar3 | 0:8b08136c5edd | 2 | * |
pbhatnagar3 | 0:8b08136c5edd | 3 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
pbhatnagar3 | 0:8b08136c5edd | 4 | * and associated documentation files (the "Software"), to deal in the Software without restriction, |
pbhatnagar3 | 0:8b08136c5edd | 5 | * including without limitation the rights to use, copy, modify, merge, publish, distribute, |
pbhatnagar3 | 0:8b08136c5edd | 6 | * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is |
pbhatnagar3 | 0:8b08136c5edd | 7 | * furnished to do so, subject to the following conditions: |
pbhatnagar3 | 0:8b08136c5edd | 8 | * |
pbhatnagar3 | 0:8b08136c5edd | 9 | * The above copyright notice and this permission notice shall be included in all copies or |
pbhatnagar3 | 0:8b08136c5edd | 10 | * substantial portions of the Software. |
pbhatnagar3 | 0:8b08136c5edd | 11 | * |
pbhatnagar3 | 0:8b08136c5edd | 12 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
pbhatnagar3 | 0:8b08136c5edd | 13 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
pbhatnagar3 | 0:8b08136c5edd | 14 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
pbhatnagar3 | 0:8b08136c5edd | 15 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
pbhatnagar3 | 0:8b08136c5edd | 16 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
pbhatnagar3 | 0:8b08136c5edd | 17 | */ |
pbhatnagar3 | 0:8b08136c5edd | 18 | |
pbhatnagar3 | 0:8b08136c5edd | 19 | #include "mbed.h" |
pbhatnagar3 | 0:8b08136c5edd | 20 | |
pbhatnagar3 | 0:8b08136c5edd | 21 | |
pbhatnagar3 | 0:8b08136c5edd | 22 | #ifndef MMA7660_H |
pbhatnagar3 | 0:8b08136c5edd | 23 | #define MMA7660_H |
pbhatnagar3 | 0:8b08136c5edd | 24 | |
pbhatnagar3 | 0:8b08136c5edd | 25 | #define MMA7660_ADDRESS 0x98 |
pbhatnagar3 | 0:8b08136c5edd | 26 | #define MMA7660_SENSITIVITY 21.33 |
pbhatnagar3 | 0:8b08136c5edd | 27 | |
pbhatnagar3 | 0:8b08136c5edd | 28 | #define MMA7660_XOUT_R 0x00 |
pbhatnagar3 | 0:8b08136c5edd | 29 | #define MMA7660_YOUT_R 0x01 |
pbhatnagar3 | 0:8b08136c5edd | 30 | #define MMA7660_ZOUT_R 0x02 |
pbhatnagar3 | 0:8b08136c5edd | 31 | #define MMA7660_TILT_R 0x03 |
pbhatnagar3 | 0:8b08136c5edd | 32 | #define MMA7660_INT_R 0x06 |
pbhatnagar3 | 0:8b08136c5edd | 33 | #define MMA7660_MODE_R 0x07 |
pbhatnagar3 | 0:8b08136c5edd | 34 | #define MMA7660_SR_R 0x08 |
pbhatnagar3 | 0:8b08136c5edd | 35 | |
pbhatnagar3 | 0:8b08136c5edd | 36 | |
pbhatnagar3 | 0:8b08136c5edd | 37 | /** An interface for the MMA7660 triple axis accelerometer |
pbhatnagar3 | 0:8b08136c5edd | 38 | * |
pbhatnagar3 | 0:8b08136c5edd | 39 | * @code |
pbhatnagar3 | 0:8b08136c5edd | 40 | * //Uses the measured z-acceleration to drive leds 2 and 3 of the mbed |
pbhatnagar3 | 0:8b08136c5edd | 41 | * |
pbhatnagar3 | 0:8b08136c5edd | 42 | * #include "mbed.h" |
pbhatnagar3 | 0:8b08136c5edd | 43 | * #include "MMA7660.h" |
pbhatnagar3 | 0:8b08136c5edd | 44 | * |
pbhatnagar3 | 0:8b08136c5edd | 45 | * MMA7660 MMA(p28, p27); |
pbhatnagar3 | 0:8b08136c5edd | 46 | * |
pbhatnagar3 | 0:8b08136c5edd | 47 | * DigitalOut connectionLed(LED1); |
pbhatnagar3 | 0:8b08136c5edd | 48 | * PwmOut Zaxis_p(LED2); |
pbhatnagar3 | 0:8b08136c5edd | 49 | * PwmOut Zaxis_n(LED3); |
pbhatnagar3 | 0:8b08136c5edd | 50 | * |
pbhatnagar3 | 0:8b08136c5edd | 51 | * int main() { |
pbhatnagar3 | 0:8b08136c5edd | 52 | * if (MMA.testConnection()) |
pbhatnagar3 | 0:8b08136c5edd | 53 | * connectionLed = 1; |
pbhatnagar3 | 0:8b08136c5edd | 54 | * |
pbhatnagar3 | 0:8b08136c5edd | 55 | * while(1) { |
pbhatnagar3 | 0:8b08136c5edd | 56 | * Zaxis_p = MMA.z(); |
pbhatnagar3 | 0:8b08136c5edd | 57 | * Zaxis_n = -MMA.z(); |
pbhatnagar3 | 0:8b08136c5edd | 58 | * } |
pbhatnagar3 | 0:8b08136c5edd | 59 | * |
pbhatnagar3 | 0:8b08136c5edd | 60 | * } |
pbhatnagar3 | 0:8b08136c5edd | 61 | * @endcode |
pbhatnagar3 | 0:8b08136c5edd | 62 | */ |
pbhatnagar3 | 0:8b08136c5edd | 63 | class MMA7660 |
pbhatnagar3 | 0:8b08136c5edd | 64 | { |
pbhatnagar3 | 0:8b08136c5edd | 65 | public: |
pbhatnagar3 | 0:8b08136c5edd | 66 | /** |
pbhatnagar3 | 0:8b08136c5edd | 67 | * The 6 different orientations and unknown |
pbhatnagar3 | 0:8b08136c5edd | 68 | * |
pbhatnagar3 | 0:8b08136c5edd | 69 | * Up & Down = X-axis |
pbhatnagar3 | 0:8b08136c5edd | 70 | * Right & Left = Y-axis |
pbhatnagar3 | 0:8b08136c5edd | 71 | * Back & Front = Z-axis |
pbhatnagar3 | 0:8b08136c5edd | 72 | * |
pbhatnagar3 | 0:8b08136c5edd | 73 | */ |
pbhatnagar3 | 0:8b08136c5edd | 74 | enum Orientation {Up, Down, |
pbhatnagar3 | 0:8b08136c5edd | 75 | Right, Left, |
pbhatnagar3 | 0:8b08136c5edd | 76 | Back, Front, |
pbhatnagar3 | 0:8b08136c5edd | 77 | Unknown |
pbhatnagar3 | 0:8b08136c5edd | 78 | }; |
pbhatnagar3 | 0:8b08136c5edd | 79 | |
pbhatnagar3 | 0:8b08136c5edd | 80 | /** |
pbhatnagar3 | 0:8b08136c5edd | 81 | * Creates a new MMA7660 object |
pbhatnagar3 | 0:8b08136c5edd | 82 | * |
pbhatnagar3 | 0:8b08136c5edd | 83 | * @param sda - I2C data pin |
pbhatnagar3 | 0:8b08136c5edd | 84 | * @param scl - I2C clock pin |
pbhatnagar3 | 0:8b08136c5edd | 85 | * @param active - true (default) to enable the device, false to keep it standby |
pbhatnagar3 | 0:8b08136c5edd | 86 | */ |
pbhatnagar3 | 0:8b08136c5edd | 87 | MMA7660(PinName sda, PinName scl, bool active = true); |
pbhatnagar3 | 0:8b08136c5edd | 88 | |
pbhatnagar3 | 0:8b08136c5edd | 89 | /** |
pbhatnagar3 | 0:8b08136c5edd | 90 | * Tests if communication is possible with the MMA7660 |
pbhatnagar3 | 0:8b08136c5edd | 91 | * |
pbhatnagar3 | 0:8b08136c5edd | 92 | * Because the MMA7660 lacks a WHO_AM_I register, this function can only check |
pbhatnagar3 | 0:8b08136c5edd | 93 | * if there is an I2C device that responds to the MMA7660 address |
pbhatnagar3 | 0:8b08136c5edd | 94 | * |
pbhatnagar3 | 0:8b08136c5edd | 95 | * @param return - true for successfull connection, false for no connection |
pbhatnagar3 | 0:8b08136c5edd | 96 | */ |
pbhatnagar3 | 0:8b08136c5edd | 97 | bool testConnection( void ); |
pbhatnagar3 | 0:8b08136c5edd | 98 | |
pbhatnagar3 | 0:8b08136c5edd | 99 | /** |
pbhatnagar3 | 0:8b08136c5edd | 100 | * Sets the active state of the MMA7660 |
pbhatnagar3 | 0:8b08136c5edd | 101 | * |
pbhatnagar3 | 0:8b08136c5edd | 102 | * Note: This is unrelated to awake/sleep mode |
pbhatnagar3 | 0:8b08136c5edd | 103 | * |
pbhatnagar3 | 0:8b08136c5edd | 104 | * @param state - true for active, false for standby |
pbhatnagar3 | 0:8b08136c5edd | 105 | */ |
pbhatnagar3 | 0:8b08136c5edd | 106 | void setActive( bool state); |
pbhatnagar3 | 0:8b08136c5edd | 107 | |
pbhatnagar3 | 0:8b08136c5edd | 108 | /** |
pbhatnagar3 | 0:8b08136c5edd | 109 | * Reads acceleration data from the sensor |
pbhatnagar3 | 0:8b08136c5edd | 110 | * |
pbhatnagar3 | 0:8b08136c5edd | 111 | * When the parameter is a pointer to an integer array it will be the raw data. |
pbhatnagar3 | 0:8b08136c5edd | 112 | * When it is a pointer to a float array it will be the acceleration in g's |
pbhatnagar3 | 0:8b08136c5edd | 113 | * |
pbhatnagar3 | 0:8b08136c5edd | 114 | * @param data - pointer to array with length 3 where the acceleration data will be stored, X-Y-Z |
pbhatnagar3 | 0:8b08136c5edd | 115 | */ |
pbhatnagar3 | 0:8b08136c5edd | 116 | void readData( int *data); |
pbhatnagar3 | 0:8b08136c5edd | 117 | void readData( float *data); |
pbhatnagar3 | 0:8b08136c5edd | 118 | |
pbhatnagar3 | 0:8b08136c5edd | 119 | /** |
pbhatnagar3 | 0:8b08136c5edd | 120 | * Get X-data |
pbhatnagar3 | 0:8b08136c5edd | 121 | * |
pbhatnagar3 | 0:8b08136c5edd | 122 | * @param return - X-acceleration in g's |
pbhatnagar3 | 0:8b08136c5edd | 123 | */ |
pbhatnagar3 | 0:8b08136c5edd | 124 | float x( void ); |
pbhatnagar3 | 0:8b08136c5edd | 125 | |
pbhatnagar3 | 0:8b08136c5edd | 126 | /** |
pbhatnagar3 | 0:8b08136c5edd | 127 | * Get Y-data |
pbhatnagar3 | 0:8b08136c5edd | 128 | * |
pbhatnagar3 | 0:8b08136c5edd | 129 | * @param return - Y-acceleration in g's |
pbhatnagar3 | 0:8b08136c5edd | 130 | */ |
pbhatnagar3 | 0:8b08136c5edd | 131 | float y( void ); |
pbhatnagar3 | 0:8b08136c5edd | 132 | |
pbhatnagar3 | 0:8b08136c5edd | 133 | /** |
pbhatnagar3 | 0:8b08136c5edd | 134 | * Get Z-data |
pbhatnagar3 | 0:8b08136c5edd | 135 | * |
pbhatnagar3 | 0:8b08136c5edd | 136 | * @param return - Z-acceleration in g's |
pbhatnagar3 | 0:8b08136c5edd | 137 | */ |
pbhatnagar3 | 0:8b08136c5edd | 138 | float z( void ); |
pbhatnagar3 | 0:8b08136c5edd | 139 | |
pbhatnagar3 | 0:8b08136c5edd | 140 | /** |
pbhatnagar3 | 0:8b08136c5edd | 141 | * Sets the active samplerate |
pbhatnagar3 | 0:8b08136c5edd | 142 | * |
pbhatnagar3 | 0:8b08136c5edd | 143 | * The entered samplerate will be rounded to nearest supported samplerate. |
pbhatnagar3 | 0:8b08136c5edd | 144 | * Supported samplerates are: 120 - 64 - 32 - 16 - 8 - 4 - 2 - 1 samples/second. |
pbhatnagar3 | 0:8b08136c5edd | 145 | * |
pbhatnagar3 | 0:8b08136c5edd | 146 | * @param samplerate - the samplerate that will be set |
pbhatnagar3 | 0:8b08136c5edd | 147 | */ |
pbhatnagar3 | 0:8b08136c5edd | 148 | void setSampleRate(int samplerate); |
pbhatnagar3 | 0:8b08136c5edd | 149 | |
pbhatnagar3 | 0:8b08136c5edd | 150 | /** |
pbhatnagar3 | 0:8b08136c5edd | 151 | * Returns if it is on its front, back, or unknown side |
pbhatnagar3 | 0:8b08136c5edd | 152 | * |
pbhatnagar3 | 0:8b08136c5edd | 153 | * This is read from MMA7760s registers, page 12 of datasheet |
pbhatnagar3 | 0:8b08136c5edd | 154 | * |
pbhatnagar3 | 0:8b08136c5edd | 155 | * @param return - Front, Back or Unknown orientation |
pbhatnagar3 | 0:8b08136c5edd | 156 | */ |
pbhatnagar3 | 0:8b08136c5edd | 157 | Orientation getSide( void ); |
pbhatnagar3 | 0:8b08136c5edd | 158 | |
pbhatnagar3 | 0:8b08136c5edd | 159 | /** |
pbhatnagar3 | 0:8b08136c5edd | 160 | * Returns if it is on it left, right, down or up side |
pbhatnagar3 | 0:8b08136c5edd | 161 | * |
pbhatnagar3 | 0:8b08136c5edd | 162 | * This is read from MMA7760s registers, page 12 of datasheet |
pbhatnagar3 | 0:8b08136c5edd | 163 | * |
pbhatnagar3 | 0:8b08136c5edd | 164 | * @param return - Left, Right, Down, Up or Unknown orientation |
pbhatnagar3 | 0:8b08136c5edd | 165 | */ |
pbhatnagar3 | 0:8b08136c5edd | 166 | Orientation getOrientation ( void ); |
pbhatnagar3 | 0:8b08136c5edd | 167 | |
pbhatnagar3 | 0:8b08136c5edd | 168 | |
pbhatnagar3 | 0:8b08136c5edd | 169 | private: |
pbhatnagar3 | 0:8b08136c5edd | 170 | |
pbhatnagar3 | 0:8b08136c5edd | 171 | /** |
pbhatnagar3 | 0:8b08136c5edd | 172 | * Writes data to the device |
pbhatnagar3 | 0:8b08136c5edd | 173 | * |
pbhatnagar3 | 0:8b08136c5edd | 174 | * @param adress - register address to write to |
pbhatnagar3 | 0:8b08136c5edd | 175 | * @param data - data to write |
pbhatnagar3 | 0:8b08136c5edd | 176 | */ |
pbhatnagar3 | 0:8b08136c5edd | 177 | void write( char address, char data); |
pbhatnagar3 | 0:8b08136c5edd | 178 | |
pbhatnagar3 | 0:8b08136c5edd | 179 | /** |
pbhatnagar3 | 0:8b08136c5edd | 180 | * Read data from the device |
pbhatnagar3 | 0:8b08136c5edd | 181 | * |
pbhatnagar3 | 0:8b08136c5edd | 182 | * @param adress - register address to write to |
pbhatnagar3 | 0:8b08136c5edd | 183 | * @return - data from the register specified by RA |
pbhatnagar3 | 0:8b08136c5edd | 184 | */ |
pbhatnagar3 | 0:8b08136c5edd | 185 | char read( char adress); |
pbhatnagar3 | 0:8b08136c5edd | 186 | |
pbhatnagar3 | 0:8b08136c5edd | 187 | /** |
pbhatnagar3 | 0:8b08136c5edd | 188 | * Read multiple regigsters from the device, more efficient than using multiple normal reads. |
pbhatnagar3 | 0:8b08136c5edd | 189 | * |
pbhatnagar3 | 0:8b08136c5edd | 190 | * @param adress - register address to write to |
pbhatnagar3 | 0:8b08136c5edd | 191 | * @param length - number of bytes to read |
pbhatnagar3 | 0:8b08136c5edd | 192 | * @param data - pointer where the data needs to be written to |
pbhatnagar3 | 0:8b08136c5edd | 193 | */ |
pbhatnagar3 | 0:8b08136c5edd | 194 | void read( char adress, char *data, int length); |
pbhatnagar3 | 0:8b08136c5edd | 195 | |
pbhatnagar3 | 0:8b08136c5edd | 196 | /** |
pbhatnagar3 | 0:8b08136c5edd | 197 | * Reads single axis |
pbhatnagar3 | 0:8b08136c5edd | 198 | */ |
pbhatnagar3 | 0:8b08136c5edd | 199 | float getSingle(int number); |
pbhatnagar3 | 0:8b08136c5edd | 200 | |
pbhatnagar3 | 0:8b08136c5edd | 201 | I2C _i2c; |
pbhatnagar3 | 0:8b08136c5edd | 202 | bool active; |
pbhatnagar3 | 0:8b08136c5edd | 203 | float samplerate; |
pbhatnagar3 | 0:8b08136c5edd | 204 | }; |
pbhatnagar3 | 0:8b08136c5edd | 205 | |
pbhatnagar3 | 0:8b08136c5edd | 206 | |
pbhatnagar3 | 0:8b08136c5edd | 207 | #endif |