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Fork of MMA8452 by
MMA8452.h@12:172540ff6b8b, 2014-03-04 (annotated)
- Committer:
- ashleymills
- Date:
- Tue Mar 04 17:50:47 2014 +0000
- Revision:
- 12:172540ff6b8b
- Parent:
- 11:dfd1e0afcb7b
- Child:
- 13:4bd8b4cd479d
Added basic raw reading back in after remake.
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
ashleymills | 10:ca9ba7ad4e94 | 1 | // Author: Nicholas Herriot, Ashley Mills |
nherriot | 0:bcf2aa85d7f9 | 2 | /* Copyright (c) 2013 Vodafone, MIT License |
nherriot | 0:bcf2aa85d7f9 | 3 | * |
nherriot | 0:bcf2aa85d7f9 | 4 | * Permission is hereby granted, free of charge, to any person obtaining a copy of this software |
nherriot | 0:bcf2aa85d7f9 | 5 | * and associated documentation files (the "Software"), to deal in the Software without restriction, |
nherriot | 0:bcf2aa85d7f9 | 6 | * including without limitation the rights to use, copy, modify, merge, publish, distribute, |
nherriot | 0:bcf2aa85d7f9 | 7 | * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is |
nherriot | 0:bcf2aa85d7f9 | 8 | * furnished to do so, subject to the following conditions: |
nherriot | 0:bcf2aa85d7f9 | 9 | * |
nherriot | 0:bcf2aa85d7f9 | 10 | * The above copyright notice and this permission notice shall be included in all copies or |
nherriot | 0:bcf2aa85d7f9 | 11 | * substantial portions of the Software. |
nherriot | 0:bcf2aa85d7f9 | 12 | * |
nherriot | 0:bcf2aa85d7f9 | 13 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING |
nherriot | 0:bcf2aa85d7f9 | 14 | * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND |
nherriot | 0:bcf2aa85d7f9 | 15 | * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, |
nherriot | 0:bcf2aa85d7f9 | 16 | * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
nherriot | 0:bcf2aa85d7f9 | 17 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. |
nherriot | 0:bcf2aa85d7f9 | 18 | */ |
nherriot | 0:bcf2aa85d7f9 | 19 | |
nherriot | 0:bcf2aa85d7f9 | 20 | // the SparkFun breakout board defaults to 1, set to 0 if SA0 jumper on the bottom of the board is set |
nherriot | 0:bcf2aa85d7f9 | 21 | // see the Table 10. I2C Device Address Sequence in Freescale MMA8452Q pdf |
nherriot | 0:bcf2aa85d7f9 | 22 | |
ashleymills | 11:dfd1e0afcb7b | 23 | |
ashleymills | 11:dfd1e0afcb7b | 24 | #define DBG(...) pc.printf(__VA_ARGS__); pc.printf("\r\n"); |
ashleymills | 11:dfd1e0afcb7b | 25 | #define DBGX(...) pc.print(__VA_ARGS__); |
ashleymills | 11:dfd1e0afcb7b | 26 | |
nherriot | 0:bcf2aa85d7f9 | 27 | //#define SA0 1 |
nherriot | 0:bcf2aa85d7f9 | 28 | //#if SA0 |
nherriot | 0:bcf2aa85d7f9 | 29 | //#define MMA8452_ADDRESS 0x3A // SA0 is high, 0x1C if low - it should be 0x1D, but we shift now to save shifting in the code |
nherriot | 0:bcf2aa85d7f9 | 30 | //#else |
nherriot | 0:bcf2aa85d7f9 | 31 | //#define MMA8452_ADDRESS 0x1C |
nherriot | 0:bcf2aa85d7f9 | 32 | //#endif |
nherriot | 0:bcf2aa85d7f9 | 33 | |
nherriot | 0:bcf2aa85d7f9 | 34 | //#ifndef MBED_MMA8452 |
nherriot | 0:bcf2aa85d7f9 | 35 | |
nherriot | 0:bcf2aa85d7f9 | 36 | //#define MBED_MMA8452 |
nherriot | 0:bcf2aa85d7f9 | 37 | |
nherriot | 0:bcf2aa85d7f9 | 38 | #include "mbed.h" |
nherriot | 0:bcf2aa85d7f9 | 39 | |
nherriot | 0:bcf2aa85d7f9 | 40 | /** Accelerometer MMA8452 class |
nherriot | 0:bcf2aa85d7f9 | 41 | * |
nherriot | 0:bcf2aa85d7f9 | 42 | * Example: |
nherriot | 0:bcf2aa85d7f9 | 43 | * @code |
nherriot | 0:bcf2aa85d7f9 | 44 | * |
nherriot | 0:bcf2aa85d7f9 | 45 | * #include "mbed.h" |
nherriot | 0:bcf2aa85d7f9 | 46 | * #include "MMA8452.h" |
nherriot | 0:bcf2aa85d7f9 | 47 | * |
nherriot | 0:bcf2aa85d7f9 | 48 | * |
nherriot | 0:bcf2aa85d7f9 | 49 | * Accelerometer_MMA8452 Acc(p28, p27); |
nherriot | 0:bcf2aa85d7f9 | 50 | * serial pc(USBTX, USBRX); |
nherriot | 0:bcf2aa85d7f9 | 51 | * |
nherriot | 0:bcf2aa85d7f9 | 52 | * int main() |
nherriot | 0:bcf2aa85d7f9 | 53 | * { |
nherriot | 0:bcf2aa85d7f9 | 54 | * Acc.init(); |
nherriot | 0:bcf2aa85d7f9 | 55 | * while(1) |
nherriot | 0:bcf2aa85d7f9 | 56 | * { |
nherriot | 0:bcf2aa85d7f9 | 57 | * int x=0, y=0, z=0; |
nherriot | 0:bcf2aa85d7f9 | 58 | * Acc.read_Tilt(&x, &y, &z); |
nherriot | 0:bcf2aa85d7f9 | 59 | * pc.printf("Tilt x: %2.2f degree \n", x); // Print the tilt orientation of the X axis |
nherriot | 0:bcf2aa85d7f9 | 60 | * pc.printf("Tilt y: %2.2f degree \n", y); // Print the tilt orientation of the Y axis |
nherriot | 0:bcf2aa85d7f9 | 61 | * pc.printf("Tilt z: %2.2f degree \n", z); // Print the tilt orientation of the Z axis |
nherriot | 0:bcf2aa85d7f9 | 62 | * wait(1); |
nherriot | 0:bcf2aa85d7f9 | 63 | * } |
nherriot | 0:bcf2aa85d7f9 | 64 | * } |
nherriot | 0:bcf2aa85d7f9 | 65 | * @endcode |
nherriot | 0:bcf2aa85d7f9 | 66 | */ |
nherriot | 0:bcf2aa85d7f9 | 67 | |
nherriot | 0:bcf2aa85d7f9 | 68 | // More info on MCU Master address can be found on section 5.10.1 of http://www.freescale.com/webapp/sps/site/prod_summary.jsp?code=MMA8452Q |
nherriot | 0:bcf2aa85d7f9 | 69 | #define SA0 1 |
nherriot | 0:bcf2aa85d7f9 | 70 | #if SA0 |
ashleymills | 11:dfd1e0afcb7b | 71 | #define MMA8452_ADDRESS 0x3A // 0x1D<<1 // SA0 is high, 0x1C if low - |
nherriot | 0:bcf2aa85d7f9 | 72 | #else |
ashleymills | 11:dfd1e0afcb7b | 73 | #define MMA8452_ADDRESS 0x38 // 0x1C<<1 |
nherriot | 0:bcf2aa85d7f9 | 74 | #endif |
nherriot | 0:bcf2aa85d7f9 | 75 | |
nherriot | 0:bcf2aa85d7f9 | 76 | // Register descriptions found in section 6 of pdf |
ashleymills | 12:172540ff6b8b | 77 | #define MMA8452_STATUS 0x00 // Type 'read' : Status of the data registers |
ashleymills | 12:172540ff6b8b | 78 | #define MMA8452_OUT_X_MSB 0x01 // Type 'read' : x axis - MSB of 2 byte sample |
ashleymills | 12:172540ff6b8b | 79 | #define MMA8452_OUT_X_LSB 0x02 // Type 'read' : x axis - LSB of 2 byte sample |
ashleymills | 12:172540ff6b8b | 80 | #define MMA8452_OUT_Y_MSB 0x03 // Type 'read' : y axis - MSB of 2 byte sample |
ashleymills | 12:172540ff6b8b | 81 | #define MMA8452_OUT_Y_LSB 0x04 // Type 'read' : y axis - LSB of 2 byte sample |
ashleymills | 12:172540ff6b8b | 82 | #define MMA8452_OUT_Z_MSB 0x05 // Type 'read' : z axis - MSB of 2 byte sample |
ashleymills | 12:172540ff6b8b | 83 | #define MMA8452_OUT_Z_LSB 0x06 // Type 'read' : z axis - LSB of 2 byte sample |
nherriot | 0:bcf2aa85d7f9 | 84 | |
ashleymills | 12:172540ff6b8b | 85 | // register definitions |
ashleymills | 12:172540ff6b8b | 86 | #define MMA8452_XYZ_DATA_CFG 0x0E |
ashleymills | 12:172540ff6b8b | 87 | |
ashleymills | 12:172540ff6b8b | 88 | #define MMA8452_SYSMOD 0x0B // Type 'read' : This tells you if device is active, sleep or standy 0x00=STANDBY 0x01=WAKE 0x02=SLEEP |
ashleymills | 12:172540ff6b8b | 89 | #define MMA8452_WHO_AM_I 0x0D // Type 'read' : This should return the device id of 0x2A |
nherriot | 0:bcf2aa85d7f9 | 90 | |
ashleymills | 12:172540ff6b8b | 91 | #define MMA8452_PL_STATUS 0x10 // Type 'read' : This shows portrait landscape mode orientation |
ashleymills | 12:172540ff6b8b | 92 | #define MMA8452_PL_CFG 0x11 // Type 'read/write' : This allows portrait landscape configuration |
ashleymills | 12:172540ff6b8b | 93 | #define MMA8452_PL_COUNT 0x12 // Type 'read' : This is the portraint landscape debounce counter |
ashleymills | 12:172540ff6b8b | 94 | #define MMA8452_PL_BF_ZCOMP 0x13 // Type 'read' : |
ashleymills | 12:172540ff6b8b | 95 | #define MMA8452_PL_THS_REG 0x14 // Type 'read' : |
nherriot | 0:bcf2aa85d7f9 | 96 | |
ashleymills | 12:172540ff6b8b | 97 | #define MMA8452_FF_MT_CFG 0X15 // Type 'read/write' : Freefaul motion functional block configuration |
ashleymills | 12:172540ff6b8b | 98 | #define MMA8452_FF_MT_SRC 0X16 // Type 'read' : Freefaul motion event source register |
ashleymills | 12:172540ff6b8b | 99 | #define MMA8452_FF_MT_THS 0X17 // Type 'read' : Freefaul motion threshold register |
ashleymills | 12:172540ff6b8b | 100 | #define MMA8452_FF_COUNT 0X18 // Type 'read' : Freefaul motion debouce counter |
nherriot | 0:bcf2aa85d7f9 | 101 | |
ashleymills | 12:172540ff6b8b | 102 | #define MMA8452_ASLP_COUNT 0x29 // Type 'read/write' : Counter settings for auto sleep |
ashleymills | 12:172540ff6b8b | 103 | #define MMA8452_CTRL_REG_1 0x2A // Type 'read/write' : |
ashleymills | 12:172540ff6b8b | 104 | #define MMA8452_CTRL_REG_2 0x2B // Type 'read/write' : |
ashleymills | 12:172540ff6b8b | 105 | #define MMA8452_CTRL_REG_3 0x2C // Type 'read/write' : |
ashleymills | 12:172540ff6b8b | 106 | #define MMA8452_CTRL_REG_4 0x2D // Type 'read/write' : |
ashleymills | 12:172540ff6b8b | 107 | #define MMA8452_CTRL_REG_5 0x2E // Type 'read/write' : |
nherriot | 0:bcf2aa85d7f9 | 108 | |
nherriot | 3:ffb0b1650ca2 | 109 | // Defined in table 13 of the Freescale PDF |
ashleymills | 12:172540ff6b8b | 110 | /// xxx these all need to have better names |
nherriot | 3:ffb0b1650ca2 | 111 | #define STANDBY 0x00 // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP |
nherriot | 3:ffb0b1650ca2 | 112 | #define WAKE 0x01 // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP |
nherriot | 3:ffb0b1650ca2 | 113 | #define SLEEP 0x02 // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP |
nherriot | 3:ffb0b1650ca2 | 114 | #define ACTIVE 0x01 // Stage value returned and set in Control Register 1, it can be STANDBY=00, or ACTIVE=01 |
nherriot | 0:bcf2aa85d7f9 | 115 | |
nherriot | 0:bcf2aa85d7f9 | 116 | #define TILT_STATUS 0x03 // Tilt Status (Read only) |
nherriot | 0:bcf2aa85d7f9 | 117 | #define SRST_STATUS 0x04 // Sample Rate Status Register (Read only) |
nherriot | 0:bcf2aa85d7f9 | 118 | #define SPCNT_STATUS 0x05 // Sleep Count Register (Read/Write) |
nherriot | 0:bcf2aa85d7f9 | 119 | #define INTSU_STATUS 0x06 // Interrupt Setup Register |
nherriot | 0:bcf2aa85d7f9 | 120 | #define MODE_STATUS 0x07 // Mode Register (Read/Write) |
nherriot | 0:bcf2aa85d7f9 | 121 | #define SR_STATUS 0x08 // Auto-Wake and Active Mode Portrait/Landscape Samples per Seconds Register (Read/Write) |
nherriot | 0:bcf2aa85d7f9 | 122 | #define PDET_STATUS 0x09 // Tap/Pulse Detection Register (Read/Write) |
nherriot | 0:bcf2aa85d7f9 | 123 | #define PD_STATUS 0xA // Tap/Pulse Debounce Count Register (Read/Write) |
nherriot | 0:bcf2aa85d7f9 | 124 | |
ashleymills | 12:172540ff6b8b | 125 | // masks for enabling/disabling standby |
ashleymills | 11:dfd1e0afcb7b | 126 | #define MMA8452_ACTIVE_MASK 0x01 |
ashleymills | 11:dfd1e0afcb7b | 127 | #define MMA8452_STANDBY_MASK 0xFE |
ashleymills | 11:dfd1e0afcb7b | 128 | |
ashleymills | 12:172540ff6b8b | 129 | // mask for dynamic range reading and writing |
ashleymills | 11:dfd1e0afcb7b | 130 | #define MMA8452_DYNAMIC_RANGE_MASK 0xFC |
ashleymills | 11:dfd1e0afcb7b | 131 | |
ashleymills | 12:172540ff6b8b | 132 | // mask and shift for data rate reading and writing |
ashleymills | 11:dfd1e0afcb7b | 133 | #define MMA8452_DATA_RATE_MASK 0xC7 |
ashleymills | 11:dfd1e0afcb7b | 134 | #define MMA8452_DATA_RATE_MASK_SHIFT 0x03 |
ashleymills | 11:dfd1e0afcb7b | 135 | |
ashleymills | 12:172540ff6b8b | 136 | // mask and shift for general reading and writing |
ashleymills | 11:dfd1e0afcb7b | 137 | #define MMA8452_WRITE_MASK 0xFE |
ashleymills | 11:dfd1e0afcb7b | 138 | #define MMA8452_READ_MASK 0x01 |
ashleymills | 11:dfd1e0afcb7b | 139 | |
ashleymills | 12:172540ff6b8b | 140 | // mask and shift for bit depth reading and writing |
ashleymills | 11:dfd1e0afcb7b | 141 | #define MMA8452_BIT_DEPTH_MASK 0xFD |
ashleymills | 11:dfd1e0afcb7b | 142 | #define MMA8452_BIT_DEPTH_MASK_SHIFT 0x01 |
ashleymills | 12:172540ff6b8b | 143 | |
ashleymills | 12:172540ff6b8b | 144 | // status masks and shifts |
ashleymills | 12:172540ff6b8b | 145 | #define MMA8452_STATUS_ZYXDR_MASK 0x08 |
ashleymills | 11:dfd1e0afcb7b | 146 | |
ashleymills | 10:ca9ba7ad4e94 | 147 | class MMA8452 |
nherriot | 0:bcf2aa85d7f9 | 148 | { |
nherriot | 0:bcf2aa85d7f9 | 149 | public: |
ashleymills | 10:ca9ba7ad4e94 | 150 | |
ashleymills | 11:dfd1e0afcb7b | 151 | enum DynamicRange { |
ashleymills | 11:dfd1e0afcb7b | 152 | DYNAMIC_RANGE_2G=0x00, |
ashleymills | 11:dfd1e0afcb7b | 153 | DYNAMIC_RANGE_4G, |
ashleymills | 11:dfd1e0afcb7b | 154 | DYNAMIC_RANGE_8G, |
ashleymills | 11:dfd1e0afcb7b | 155 | DYNAMIC_RANGE_UNKNOWN |
ashleymills | 10:ca9ba7ad4e94 | 156 | }; |
nherriot | 0:bcf2aa85d7f9 | 157 | |
ashleymills | 10:ca9ba7ad4e94 | 158 | enum BitDepth { |
ashleymills | 11:dfd1e0afcb7b | 159 | BIT_DEPTH_12=0x00, |
ashleymills | 12:172540ff6b8b | 160 | BIT_DEPTH_8, // 1 sets fast read mode, hence the inversion |
ashleymills | 12:172540ff6b8b | 161 | BIT_DEPTH_UNKNOWN |
ashleymills | 10:ca9ba7ad4e94 | 162 | }; |
ashleymills | 11:dfd1e0afcb7b | 163 | |
ashleymills | 11:dfd1e0afcb7b | 164 | enum DataRateHz { |
ashleymills | 11:dfd1e0afcb7b | 165 | RATE_800=0x00, |
ashleymills | 11:dfd1e0afcb7b | 166 | RATE_400, |
ashleymills | 11:dfd1e0afcb7b | 167 | RATE_200, |
ashleymills | 11:dfd1e0afcb7b | 168 | RATE_100, |
ashleymills | 11:dfd1e0afcb7b | 169 | RATE_50, |
ashleymills | 11:dfd1e0afcb7b | 170 | RATE_12_5, |
ashleymills | 11:dfd1e0afcb7b | 171 | RATE_6_25, |
ashleymills | 11:dfd1e0afcb7b | 172 | RATE_1_563, |
ashleymills | 11:dfd1e0afcb7b | 173 | RATE_UNKNOWN |
ashleymills | 11:dfd1e0afcb7b | 174 | }; |
ashleymills | 11:dfd1e0afcb7b | 175 | |
ashleymills | 11:dfd1e0afcb7b | 176 | //void setDynamicRange( |
nherriot | 0:bcf2aa85d7f9 | 177 | |
nherriot | 0:bcf2aa85d7f9 | 178 | /** Create an accelerometer object connected to the specified I2C object |
nherriot | 0:bcf2aa85d7f9 | 179 | * |
nherriot | 0:bcf2aa85d7f9 | 180 | * @param sda I2C data port |
nherriot | 0:bcf2aa85d7f9 | 181 | * @param scl I2C8452 clock port |
nherriot | 0:bcf2aa85d7f9 | 182 | * |
nherriot | 0:bcf2aa85d7f9 | 183 | */ |
ashleymills | 10:ca9ba7ad4e94 | 184 | MMA8452(PinName sda, PinName scl, int frequency); |
nherriot | 1:ef026bf28798 | 185 | //Accelerometer_MMA8452(PinName sda, PinName scl); |
nherriot | 0:bcf2aa85d7f9 | 186 | |
nherriot | 0:bcf2aa85d7f9 | 187 | /** Destroys an MMA8452 object |
nherriot | 0:bcf2aa85d7f9 | 188 | * |
nherriot | 0:bcf2aa85d7f9 | 189 | */ |
ashleymills | 10:ca9ba7ad4e94 | 190 | ~MMA8452(); |
nherriot | 3:ffb0b1650ca2 | 191 | |
ashleymills | 11:dfd1e0afcb7b | 192 | //int setOperationMode(OperationMode m); |
nherriot | 3:ffb0b1650ca2 | 193 | |
nherriot | 3:ffb0b1650ca2 | 194 | |
nherriot | 0:bcf2aa85d7f9 | 195 | /** Activate the MMA8452 (required) |
nherriot | 1:ef026bf28798 | 196 | * returns 0 for success in activating the chip |
nherriot | 1:ef026bf28798 | 197 | * returns 1 for failure in activating the chip |
nherriot | 1:ef026bf28798 | 198 | * -currrently no retries or waiting is done, this method tries 1 time the exits. |
nherriot | 3:ffb0b1650ca2 | 199 | * |
nherriot | 3:ffb0b1650ca2 | 200 | * This will set the device 'active' even if it's already active. It's just a way to force that state. |
nherriot | 1:ef026bf28798 | 201 | */ |
nherriot | 0:bcf2aa85d7f9 | 202 | int activate(); |
nherriot | 3:ffb0b1650ca2 | 203 | |
nherriot | 3:ffb0b1650ca2 | 204 | |
nherriot | 3:ffb0b1650ca2 | 205 | /** Standby the MMA8452 (not required) |
nherriot | 3:ffb0b1650ca2 | 206 | * returns 0 for success in activating the chip |
nherriot | 3:ffb0b1650ca2 | 207 | * returns 1 for failure in activating the chip |
nherriot | 3:ffb0b1650ca2 | 208 | * -currrently no retries or waiting is done, this method tries 1 time the exits. |
nherriot | 3:ffb0b1650ca2 | 209 | * |
nherriot | 3:ffb0b1650ca2 | 210 | * This will set the device 'standby' even if it's already in standby. It's just a way to force that state. |
nherriot | 3:ffb0b1650ca2 | 211 | */ |
nherriot | 3:ffb0b1650ca2 | 212 | int standby(); |
nherriot | 3:ffb0b1650ca2 | 213 | |
nherriot | 3:ffb0b1650ca2 | 214 | |
nherriot | 5:b3d0abd97e55 | 215 | /** get_CTRL_Reg1 the MMA8452 (not required) |
nherriot | 5:b3d0abd97e55 | 216 | * returns 0 for success in activating the chip |
nherriot | 5:b3d0abd97e55 | 217 | * returns 1 for failure in activating the chip |
nherriot | 5:b3d0abd97e55 | 218 | * -currrently no retries or waiting is done, this method tries 1 time the exits. |
nherriot | 5:b3d0abd97e55 | 219 | * |
nherriot | 5:b3d0abd97e55 | 220 | * This will return the state of the control register 1. This holds and sets values for auto wake, sleep mode |
nherriot | 5:b3d0abd97e55 | 221 | * output data rate, fast read mode and active/standby. More info on 6.7 of pdf for MMA8452 Freescale doc. |
nherriot | 5:b3d0abd97e55 | 222 | */ |
ashleymills | 11:dfd1e0afcb7b | 223 | int get_CTRL_Reg1(char* dst); |
nherriot | 5:b3d0abd97e55 | 224 | |
nherriot | 0:bcf2aa85d7f9 | 225 | |
nherriot | 0:bcf2aa85d7f9 | 226 | /** Initialization of device MMA8452 (required) |
nherriot | 0:bcf2aa85d7f9 | 227 | */ |
nherriot | 0:bcf2aa85d7f9 | 228 | void init(); |
nherriot | 0:bcf2aa85d7f9 | 229 | |
nherriot | 1:ef026bf28798 | 230 | /** Read the device ID from the accelerometer |
nherriot | 1:ef026bf28798 | 231 | * |
nherriot | 1:ef026bf28798 | 232 | * @param *deviceID Value of device - is should be 0x2A |
nherriot | 1:ef026bf28798 | 233 | * return 0 for success or |
nherriot | 1:ef026bf28798 | 234 | * return 1 for failure. |
nherriot | 1:ef026bf28798 | 235 | */ |
ashleymills | 11:dfd1e0afcb7b | 236 | int getDeviceID(char* dst); |
nherriot | 0:bcf2aa85d7f9 | 237 | |
ashleymills | 12:172540ff6b8b | 238 | int getStatus(char* dst); |
nherriot | 3:ffb0b1650ca2 | 239 | |
nherriot | 0:bcf2aa85d7f9 | 240 | /** Read the x register of the MMA8452 |
nherriot | 0:bcf2aa85d7f9 | 241 | * |
nherriot | 0:bcf2aa85d7f9 | 242 | * @returns The value of x acceleration |
nherriot | 0:bcf2aa85d7f9 | 243 | */ |
ashleymills | 12:172540ff6b8b | 244 | int readRawX(char *dst); |
ashleymills | 12:172540ff6b8b | 245 | |
nherriot | 0:bcf2aa85d7f9 | 246 | /** Read the y register of the MMA8452 |
ashleymills | 12:172540ff6b8b | 247 | * @param dst The destination buffer |
ashleymills | 12:172540ff6b8b | 248 | * @returns The value of y acceleration |
ashleymills | 12:172540ff6b8b | 249 | */ |
ashleymills | 12:172540ff6b8b | 250 | int readRawY(char *dst); |
nherriot | 0:bcf2aa85d7f9 | 251 | |
nherriot | 0:bcf2aa85d7f9 | 252 | /** Read the z register of the MMA8452 |
nherriot | 0:bcf2aa85d7f9 | 253 | * |
nherriot | 0:bcf2aa85d7f9 | 254 | * @returns The value of z acceleration |
nherriot | 0:bcf2aa85d7f9 | 255 | */ |
ashleymills | 10:ca9ba7ad4e94 | 256 | int readRawZ(char * zaxis); |
nherriot | 1:ef026bf28798 | 257 | |
ashleymills | 12:172540ff6b8b | 258 | /** |
ashleymills | 12:172540ff6b8b | 259 | * Read the x,y, and z registers of the MMA8452. |
nherriot | 1:ef026bf28798 | 260 | * |
ashleymills | 12:172540ff6b8b | 261 | * @param dst The destination buffer. Note that this needs to be 3 bytes for |
ashleymills | 12:172540ff6b8b | 262 | * BIT_DEPTH_8 and 6 bytes for BIT_DEPTH_12. It is upto the caller to ensure this. |
ashleymills | 12:172540ff6b8b | 263 | * @return 0 for success, and 1 for failure |
nherriot | 1:ef026bf28798 | 264 | */ |
ashleymills | 12:172540ff6b8b | 265 | int readRawXYZ(char *dst); |
ashleymills | 12:172540ff6b8b | 266 | |
ashleymills | 12:172540ff6b8b | 267 | int isXYZReady(); |
nherriot | 0:bcf2aa85d7f9 | 268 | |
ashleymills | 12:172540ff6b8b | 269 | /** Read from specified MMA8452 register |
ashleymills | 12:172540ff6b8b | 270 | * |
ashleymills | 12:172540ff6b8b | 271 | * @param addr The internal registeraddress of the MMA8452 |
ashleymills | 12:172540ff6b8b | 272 | * @return The value of the register |
ashleymills | 12:172540ff6b8b | 273 | */ |
ashleymills | 11:dfd1e0afcb7b | 274 | int readRegister(char addr, char *dst); |
ashleymills | 11:dfd1e0afcb7b | 275 | |
ashleymills | 11:dfd1e0afcb7b | 276 | int readRegister(char addr, char *dst, int nbytes); |
nherriot | 0:bcf2aa85d7f9 | 277 | |
ashleymills | 12:172540ff6b8b | 278 | /** |
ashleymills | 12:172540ff6b8b | 279 | * Write to the specified MMA8452 register. |
nherriot | 0:bcf2aa85d7f9 | 280 | * |
ashleymills | 12:172540ff6b8b | 281 | * @param addr The internal register address |
ashleymills | 12:172540ff6b8b | 282 | * @param data Data to write |
nherriot | 0:bcf2aa85d7f9 | 283 | */ |
ashleymills | 11:dfd1e0afcb7b | 284 | int writeRegister(char addr, char data); |
ashleymills | 12:172540ff6b8b | 285 | |
ashleymills | 12:172540ff6b8b | 286 | /** |
ashleymills | 12:172540ff6b8b | 287 | * Write a data buffer to the specified MMA8452 register. |
ashleymills | 12:172540ff6b8b | 288 | * |
ashleymills | 12:172540ff6b8b | 289 | * @param addr The internal register address |
ashleymills | 12:172540ff6b8b | 290 | * @param data Data buffer to write |
ashleymills | 12:172540ff6b8b | 291 | * @param nbytes The length of the data buffer to write |
ashleymills | 12:172540ff6b8b | 292 | */ |
ashleymills | 11:dfd1e0afcb7b | 293 | int writeRegister(char addr, char *data, int nbytes); |
ashleymills | 11:dfd1e0afcb7b | 294 | |
ashleymills | 11:dfd1e0afcb7b | 295 | int logicalANDRegister(char addr, char mask); |
ashleymills | 11:dfd1e0afcb7b | 296 | int logicalORRegister(char addr, char mask); |
ashleymills | 11:dfd1e0afcb7b | 297 | int logicalXORRegister(char addr, char mask); |
nherriot | 0:bcf2aa85d7f9 | 298 | |
ashleymills | 11:dfd1e0afcb7b | 299 | int setDynamicRange(DynamicRange range, int toggleActivation=1); |
ashleymills | 11:dfd1e0afcb7b | 300 | int setBitDepth(BitDepth depth, int toggleActivation=1); |
ashleymills | 11:dfd1e0afcb7b | 301 | int setDataRate(DataRateHz dataRate, int toggleActivation=1); |
ashleymills | 11:dfd1e0afcb7b | 302 | DynamicRange getDynamicRange(); |
ashleymills | 11:dfd1e0afcb7b | 303 | DataRateHz getDataRate(); |
ashleymills | 12:172540ff6b8b | 304 | BitDepth getBitDepth(); |
ashleymills | 11:dfd1e0afcb7b | 305 | |
ashleymills | 11:dfd1e0afcb7b | 306 | void debugRegister(char reg); |
nherriot | 0:bcf2aa85d7f9 | 307 | |
nherriot | 0:bcf2aa85d7f9 | 308 | private: |
ashleymills | 10:ca9ba7ad4e94 | 309 | int readRaw(char src, char *dst, int len); |
ashleymills | 11:dfd1e0afcb7b | 310 | int maskAndApplyRegister(char reg, char mask, char value, int toggleActivation); |
ashleymills | 8:89272163f395 | 311 | |
ashleymills | 11:dfd1e0afcb7b | 312 | I2C _i2c; |
ashleymills | 11:dfd1e0afcb7b | 313 | int _frequency; |
ashleymills | 6:f6bde04bf8be | 314 | int _readAddress; |
ashleymills | 6:f6bde04bf8be | 315 | int _writeAddress; |
ashleymills | 12:172540ff6b8b | 316 | |
ashleymills | 12:172540ff6b8b | 317 | BitDepth _bitDepth; |
nherriot | 0:bcf2aa85d7f9 | 318 | |
nherriot | 0:bcf2aa85d7f9 | 319 | }; |
nherriot | 0:bcf2aa85d7f9 | 320 | |
nherriot | 0:bcf2aa85d7f9 | 321 | //#endif |