Daniel Dakev / Mbed 2 deprecated laser-tag

Laser tag guns code https://os.mbed.com/users/ddakev/notebook/laser-tag-system/

Dependencies:   mbed 4DGL-uLCD-SE PinDetect SoftI2C

MMA8452.h@1:7d957da791a5, 2019-04-22 (annotated)

Committer:
ddakev
Date:
Mon Apr 22 17:40:30 2019 +0000
Revision:
1:7d957da791a5
Parent:
0:4c644bb83761 
Bug fixes

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ddakev 0:4c644bb83761 1 #pragma once
ddakev 0:4c644bb83761 2
ddakev 0:4c644bb83761 3 // Authors: Ashley Mills, Nicholas Herriot
ddakev 0:4c644bb83761 4 /* Copyright (c) 2013 Vodafone, MIT License
ddakev 0:4c644bb83761 5 *
ddakev 0:4c644bb83761 6 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
ddakev 0:4c644bb83761 7 * and associated documentation files (the "Software"), to deal in the Software without restriction,
ddakev 0:4c644bb83761 8 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
ddakev 0:4c644bb83761 9 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
ddakev 0:4c644bb83761 10 * furnished to do so, subject to the following conditions:
ddakev 0:4c644bb83761 11 *
ddakev 0:4c644bb83761 12 * The above copyright notice and this permission notice shall be included in all copies or
ddakev 0:4c644bb83761 13 * substantial portions of the Software.
ddakev 0:4c644bb83761 14 *
ddakev 0:4c644bb83761 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
ddakev 0:4c644bb83761 16 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
ddakev 0:4c644bb83761 17 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
ddakev 0:4c644bb83761 18 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ddakev 0:4c644bb83761 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
ddakev 0:4c644bb83761 20 */
ddakev 0:4c644bb83761 21
ddakev 0:4c644bb83761 22 // the SparkFun breakout board defaults to 1, set to 0 if SA0 jumper on the bottom of the board is set
ddakev 0:4c644bb83761 23 // see the Table 10. I2C Device Address Sequence in Freescale MMA8452Q pdf
ddakev 0:4c644bb83761 24
ddakev 0:4c644bb83761 25 #include "mbed.h"
ddakev 0:4c644bb83761 26 #include "SoftI2C.h"
ddakev 0:4c644bb83761 27
ddakev 0:4c644bb83761 28 #define MMA8452_DEBUG 1
ddakev 0:4c644bb83761 29
ddakev 0:4c644bb83761 30 // 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
ddakev 0:4c644bb83761 31 #define SA0 1
ddakev 0:4c644bb83761 32 #if SA0
ddakev 0:4c644bb83761 33 #define MMA8452_ADDRESS 0x3A // 0x1D<<1 // SA0 is high, 0x1C if low -
ddakev 0:4c644bb83761 34 #else
ddakev 0:4c644bb83761 35 #define MMA8452_ADDRESS 0x38 // 0x1C<<1
ddakev 0:4c644bb83761 36 #endif
ddakev 0:4c644bb83761 37
ddakev 0:4c644bb83761 38 // Register descriptions found in section 6 of pdf
ddakev 0:4c644bb83761 39 #define MMA8452_STATUS 0x00 // Type 'read' : Status of the data registers
ddakev 0:4c644bb83761 40 #define MMA8452_OUT_X_MSB 0x01 // Type 'read' : x axis - MSB of 2 byte sample
ddakev 0:4c644bb83761 41 #define MMA8452_OUT_X_LSB 0x02 // Type 'read' : x axis - LSB of 2 byte sample
ddakev 0:4c644bb83761 42 #define MMA8452_OUT_Y_MSB 0x03 // Type 'read' : y axis - MSB of 2 byte sample
ddakev 0:4c644bb83761 43 #define MMA8452_OUT_Y_LSB 0x04 // Type 'read' : y axis - LSB of 2 byte sample
ddakev 0:4c644bb83761 44 #define MMA8452_OUT_Z_MSB 0x05 // Type 'read' : z axis - MSB of 2 byte sample
ddakev 0:4c644bb83761 45 #define MMA8452_OUT_Z_LSB 0x06 // Type 'read' : z axis - LSB of 2 byte sample
ddakev 0:4c644bb83761 46
ddakev 0:4c644bb83761 47 // register definitions
ddakev 0:4c644bb83761 48 #define MMA8452_XYZ_DATA_CFG 0x0E
ddakev 0:4c644bb83761 49
ddakev 0:4c644bb83761 50 #define MMA8452_SYSMOD 0x0B // Type 'read' : This tells you if device is active, sleep or standy 0x00=STANDBY 0x01=WAKE 0x02=SLEEP
ddakev 0:4c644bb83761 51 #define MMA8452_WHO_AM_I 0x0D // Type 'read' : This should return the device id of 0x2A
ddakev 0:4c644bb83761 52
ddakev 0:4c644bb83761 53 #define MMA8452_PL_STATUS 0x10 // Type 'read' : This shows portrait landscape mode orientation
ddakev 0:4c644bb83761 54 #define MMA8452_PL_CFG 0x11 // Type 'read/write' : This allows portrait landscape configuration
ddakev 0:4c644bb83761 55 #define MMA8452_PL_COUNT 0x12 // Type 'read' : This is the portraint landscape debounce counter
ddakev 0:4c644bb83761 56 #define MMA8452_PL_BF_ZCOMP 0x13 // Type 'read' :
ddakev 0:4c644bb83761 57 #define MMA8452_PL_THS_REG 0x14 // Type 'read' :
ddakev 0:4c644bb83761 58
ddakev 0:4c644bb83761 59 #define MMA8452_FF_MT_CFG 0X15 // Type 'read/write' : Freefaul motion functional block configuration
ddakev 0:4c644bb83761 60 #define MMA8452_FF_MT_SRC 0X16 // Type 'read' : Freefaul motion event source register
ddakev 0:4c644bb83761 61 #define MMA8452_FF_MT_THS 0X17 // Type 'read' : Freefaul motion threshold register
ddakev 0:4c644bb83761 62 #define MMA8452_FF_COUNT 0X18 // Type 'read' : Freefaul motion debouce counter
ddakev 0:4c644bb83761 63
ddakev 0:4c644bb83761 64 #define MMA8452_ASLP_COUNT 0x29 // Type 'read/write' : Counter settings for auto sleep
ddakev 0:4c644bb83761 65 #define MMA8452_CTRL_REG_1 0x2A // Type 'read/write' :
ddakev 0:4c644bb83761 66 #define MMA8452_CTRL_REG_2 0x2B // Type 'read/write' :
ddakev 0:4c644bb83761 67 #define MMA8452_CTRL_REG_3 0x2C // Type 'read/write' :
ddakev 0:4c644bb83761 68 #define MMA8452_CTRL_REG_4 0x2D // Type 'read/write' :
ddakev 0:4c644bb83761 69 #define MMA8452_CTRL_REG_5 0x2E // Type 'read/write' :
ddakev 0:4c644bb83761 70
ddakev 0:4c644bb83761 71 // Defined in table 13 of the Freescale PDF
ddakev 0:4c644bb83761 72 /// xxx these all need to have better names
ddakev 0:4c644bb83761 73 #define STANDBY 0x00 // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP
ddakev 0:4c644bb83761 74 #define WAKE 0x01 // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP
ddakev 0:4c644bb83761 75 #define SLEEP 0x02 // State value returned after a SYSMOD request, it can be in state STANDBY, WAKE or SLEEP
ddakev 0:4c644bb83761 76 #define ACTIVE 0x01 // Stage value returned and set in Control Register 1, it can be STANDBY=00, or ACTIVE=01
ddakev 0:4c644bb83761 77
ddakev 0:4c644bb83761 78 #define TILT_STATUS 0x03 // Tilt Status (Read only)
ddakev 0:4c644bb83761 79 #define SRST_STATUS 0x04 // Sample Rate Status Register (Read only)
ddakev 0:4c644bb83761 80 #define SPCNT_STATUS 0x05 // Sleep Count Register (Read/Write)
ddakev 0:4c644bb83761 81 #define INTSU_STATUS 0x06 // Interrupt Setup Register
ddakev 0:4c644bb83761 82 #define MODE_STATUS 0x07 // Mode Register (Read/Write)
ddakev 0:4c644bb83761 83 #define SR_STATUS 0x08 // Auto-Wake and Active Mode Portrait/Landscape Samples per Seconds Register (Read/Write)
ddakev 0:4c644bb83761 84 #define PDET_STATUS 0x09 // Tap/Pulse Detection Register (Read/Write)
ddakev 0:4c644bb83761 85 #define PD_STATUS 0xA // Tap/Pulse Debounce Count Register (Read/Write)
ddakev 0:4c644bb83761 86
ddakev 0:4c644bb83761 87 // masks for enabling/disabling standby
ddakev 0:4c644bb83761 88 #define MMA8452_ACTIVE_MASK 0x01
ddakev 0:4c644bb83761 89 #define MMA8452_STANDBY_MASK 0xFE
ddakev 0:4c644bb83761 90
ddakev 0:4c644bb83761 91 // mask for dynamic range reading and writing
ddakev 0:4c644bb83761 92 #define MMA8452_DYNAMIC_RANGE_MASK 0xFC
ddakev 0:4c644bb83761 93
ddakev 0:4c644bb83761 94 // mask and shift for data rate reading and writing
ddakev 0:4c644bb83761 95 #define MMA8452_DATA_RATE_MASK 0xC7
ddakev 0:4c644bb83761 96 #define MMA8452_DATA_RATE_MASK_SHIFT 0x03
ddakev 0:4c644bb83761 97
ddakev 0:4c644bb83761 98 // mask and shift for general reading and writing
ddakev 0:4c644bb83761 99 #define MMA8452_WRITE_MASK 0xFE
ddakev 0:4c644bb83761 100 #define MMA8452_READ_MASK 0x01
ddakev 0:4c644bb83761 101
ddakev 0:4c644bb83761 102 // mask and shift for bit depth reading and writing
ddakev 0:4c644bb83761 103 #define MMA8452_BIT_DEPTH_MASK 0xFD
ddakev 0:4c644bb83761 104 #define MMA8452_BIT_DEPTH_MASK_SHIFT 0x01
ddakev 0:4c644bb83761 105
ddakev 0:4c644bb83761 106 // status masks and shifts
ddakev 0:4c644bb83761 107 #define MMA8452_STATUS_ZYXDR_MASK 0x08
ddakev 0:4c644bb83761 108 #define MMA8452_STATUS_ZDR_MASK 0x04
ddakev 0:4c644bb83761 109 #define MMA8452_STATUS_YDR_MASK 0x02
ddakev 0:4c644bb83761 110 #define MMA8452_STATUS_XDR_MASK 0x01
ddakev 0:4c644bb83761 111
ddakev 0:4c644bb83761 112 /**
ddakev 0:4c644bb83761 113 * Wrapper for the MMA8452 I2C driven accelerometer.
ddakev 0:4c644bb83761 114 */
ddakev 0:4c644bb83761 115 class MMA8452 {
ddakev 0:4c644bb83761 116
ddakev 0:4c644bb83761 117 public:
ddakev 0:4c644bb83761 118
ddakev 0:4c644bb83761 119 enum DynamicRange {
ddakev 0:4c644bb83761 120 DYNAMIC_RANGE_2G=0x00,
ddakev 0:4c644bb83761 121 DYNAMIC_RANGE_4G,
ddakev 0:4c644bb83761 122 DYNAMIC_RANGE_8G,
ddakev 0:4c644bb83761 123 DYNAMIC_RANGE_UNKNOWN
ddakev 0:4c644bb83761 124 };
ddakev 0:4c644bb83761 125
ddakev 0:4c644bb83761 126 enum BitDepth {
ddakev 0:4c644bb83761 127 BIT_DEPTH_12=0x00,
ddakev 0:4c644bb83761 128 BIT_DEPTH_8, // 1 sets fast read mode, hence the inversion
ddakev 0:4c644bb83761 129 BIT_DEPTH_UNKNOWN
ddakev 0:4c644bb83761 130 };
ddakev 0:4c644bb83761 131
ddakev 0:4c644bb83761 132 enum DataRateHz {
ddakev 0:4c644bb83761 133 RATE_800=0x00,
ddakev 0:4c644bb83761 134 RATE_400,
ddakev 0:4c644bb83761 135 RATE_200,
ddakev 0:4c644bb83761 136 RATE_100,
ddakev 0:4c644bb83761 137 RATE_50,
ddakev 0:4c644bb83761 138 RATE_12_5,
ddakev 0:4c644bb83761 139 RATE_6_25,
ddakev 0:4c644bb83761 140 RATE_1_563,
ddakev 0:4c644bb83761 141 RATE_UNKNOWN
ddakev 0:4c644bb83761 142 };
ddakev 0:4c644bb83761 143
ddakev 0:4c644bb83761 144 /**
ddakev 0:4c644bb83761 145 * Create an accelerometer object connected to the specified I2C pins.
ddakev 0:4c644bb83761 146 *
ddakev 0:4c644bb83761 147 * @param sda I2C data port
ddakev 0:4c644bb83761 148 * @param scl I2C clock port
ddakev 0:4c644bb83761 149 * @param frequency
ddakev 0:4c644bb83761 150 *
ddakev 0:4c644bb83761 151 */
ddakev 0:4c644bb83761 152 MMA8452(PinName sda, PinName scl, int frequency);
ddakev 0:4c644bb83761 153
ddakev 0:4c644bb83761 154 /// Destructor
ddakev 0:4c644bb83761 155 ~MMA8452();
ddakev 0:4c644bb83761 156
ddakev 0:4c644bb83761 157 /**
ddakev 0:4c644bb83761 158 * Puts the MMA8452 in active mode.
ddakev 0:4c644bb83761 159 * @return 0 on success, 1 on failure.
ddakev 0:4c644bb83761 160 */
ddakev 0:4c644bb83761 161 int activate();
ddakev 0:4c644bb83761 162
ddakev 0:4c644bb83761 163 /**
ddakev 0:4c644bb83761 164 * Puts the MMA8452 in standby.
ddakev 0:4c644bb83761 165 * @return 0 on success, 1 on failure.
ddakev 0:4c644bb83761 166 */
ddakev 0:4c644bb83761 167 int standby();
ddakev 0:4c644bb83761 168
ddakev 0:4c644bb83761 169 /**
ddakev 0:4c644bb83761 170 * Read the device ID from the accelerometer (should be 0x2a)
ddakev 0:4c644bb83761 171 *
ddakev 0:4c644bb83761 172 * @param dst pointer to store the ID
ddakev 0:4c644bb83761 173 * @return 0 on success, 1 on failure.
ddakev 0:4c644bb83761 174 */
ddakev 0:4c644bb83761 175 int getDeviceID(char* dst);
ddakev 0:4c644bb83761 176
ddakev 0:4c644bb83761 177 /**
ddakev 0:4c644bb83761 178 * Read the MMA8452 status register.
ddakev 0:4c644bb83761 179 *
ddakev 0:4c644bb83761 180 * @param dst pointer to store the register value.
ddakev 0:4c644bb83761 181 * @ return 0 on success, 1 on failure.
ddakev 0:4c644bb83761 182 */
ddakev 0:4c644bb83761 183 int getStatus(char* dst);
ddakev 0:4c644bb83761 184
ddakev 0:4c644bb83761 185 /**
ddakev 0:4c644bb83761 186 * Read the raw x, y, an z registers of the MMA8452 in one operation.
ddakev 0:4c644bb83761 187 * All three registers are read sequentially and stored in the provided buffer.
ddakev 0:4c644bb83761 188 * The stored values are signed 2's complement left-aligned 12 or 8 bit integers.
ddakev 0:4c644bb83761 189 *
ddakev 0:4c644bb83761 190 * @param dst The destination buffer. Note that this needs to be 3 bytes for
ddakev 0:4c644bb83761 191 * BIT_DEPTH_8 and 6 bytes for BIT_DEPTH_12. It is upto the caller to ensure this.
ddakev 0:4c644bb83761 192 * @return 0 for success, and 1 for failure
ddakev 0:4c644bb83761 193 * @sa setBitDepth
ddakev 0:4c644bb83761 194 */
ddakev 0:4c644bb83761 195 int readXYZRaw(char *dst);
ddakev 0:4c644bb83761 196
ddakev 0:4c644bb83761 197 /// Read the raw x register into the provided buffer. @sa readXYZRaw
ddakev 0:4c644bb83761 198 int readXRaw(char *dst);
ddakev 0:4c644bb83761 199 /// Read the raw y register into the provided buffer. @sa readXYZRaw
ddakev 0:4c644bb83761 200 int readYRaw(char *dst);
ddakev 0:4c644bb83761 201 /// Read the raw z register into the provided buffer. @sa readXYZRaw
ddakev 0:4c644bb83761 202 int readZRaw(char *dst);
ddakev 0:4c644bb83761 203
ddakev 0:4c644bb83761 204 /**
ddakev 0:4c644bb83761 205 * Read the x, y, and z signed counts of the MMA8452 axes.
ddakev 0:4c644bb83761 206 *
ddakev 0:4c644bb83761 207 * Count resolution is either 8 bits or 12 bits, and the range is either +-2G, +-4G, or +-8G
ddakev 0:4c644bb83761 208 * depending on settings. The number of counts per G are 1024, 512, 256 for 2,4, and 8 G
ddakev 0:4c644bb83761 209 * respectively at 12 bit resolution and 64, 32, 16 for 2, 4, and 8 G respectively at
ddakev 0:4c644bb83761 210 * 8 bit resolution.
ddakev 0:4c644bb83761 211 *
ddakev 0:4c644bb83761 212 * This function queries the MMA8452 and returns the signed counts for each axes.
ddakev 0:4c644bb83761 213 *
ddakev 0:4c644bb83761 214 * @param x Pointer to integer to store x count
ddakev 0:4c644bb83761 215 * @param y Pointer to integer to store y count
ddakev 0:4c644bb83761 216 * @param z Pointer to integer to store z count
ddakev 0:4c644bb83761 217 * @return 0 on success, 1 on failure.
ddakev 0:4c644bb83761 218 */
ddakev 0:4c644bb83761 219 int readXYZCounts(int *x, int *y, int *z);
ddakev 0:4c644bb83761 220
ddakev 0:4c644bb83761 221 /// Read the x axes signed count. @sa readXYZCounts
ddakev 0:4c644bb83761 222 int readXCount(int *x);
ddakev 0:4c644bb83761 223 /// Read the y axes signed count. @sa readXYZCounts
ddakev 0:4c644bb83761 224 int readYCount(int *y);
ddakev 0:4c644bb83761 225 /// Read the z axes signed count. @sa readXYZCounts
ddakev 0:4c644bb83761 226 int readZCount(int *z);
ddakev 0:4c644bb83761 227
ddakev 0:4c644bb83761 228 /**
ddakev 0:4c644bb83761 229 * Read the x, y, and z accelerations measured in G.
ddakev 0:4c644bb83761 230 *
ddakev 0:4c644bb83761 231 * The measurement resolution is controlled via setBitDepth which can
ddakev 0:4c644bb83761 232 * be 8 or 12, and by setDynamicRange, which can be +-2G, +-4G, or +-8G.
ddakev 0:4c644bb83761 233 *
ddakev 0:4c644bb83761 234 * @param x A pointer to the double to store the x acceleration in.
ddakev 0:4c644bb83761 235 * @param y A pointer to the double to store the y acceleration in.
ddakev 0:4c644bb83761 236 * @param z A pointer to the double to store the z acceleration in.
ddakev 0:4c644bb83761 237 *
ddakev 0:4c644bb83761 238 * @return 0 on success, 1 on failure.
ddakev 0:4c644bb83761 239 */
ddakev 0:4c644bb83761 240 int readXYZGravity(double *x, double *y, double *z);
ddakev 0:4c644bb83761 241
ddakev 0:4c644bb83761 242 /// Read the x gravity in G into the provided double pointer. @sa readXYZGravity
ddakev 0:4c644bb83761 243 int readXGravity(double *x);
ddakev 0:4c644bb83761 244 /// Read the y gravity in G into the provided double pointer. @sa readXYZGravity
ddakev 0:4c644bb83761 245 int readYGravity(double *y);
ddakev 0:4c644bb83761 246 /// Read the z gravity in G into the provided double pointer. @sa readXYZGravity
ddakev 0:4c644bb83761 247 int readZGravity(double *z);
ddakev 0:4c644bb83761 248
ddakev 0:4c644bb83761 249 /// Returns 1 if data has been internally sampled (is available) for all axes since last read, 0 otherwise.
ddakev 0:4c644bb83761 250 int isXYZReady();
ddakev 0:4c644bb83761 251 /// Returns 1 if data has been internally sampled (is available) for the x-axis since last read, 0 otherwise.
ddakev 0:4c644bb83761 252 int isXReady();
ddakev 0:4c644bb83761 253 /// Returns 1 if data has been internally sampled (is available) for the y-axis since last read, 0 otherwise.
ddakev 0:4c644bb83761 254 int isYReady();
ddakev 0:4c644bb83761 255 /// Returns 1 if data has been internally sampled (is available) for the z-axis since last read, 0 otherwise.
ddakev 0:4c644bb83761 256 int isZReady();
ddakev 0:4c644bb83761 257
ddakev 0:4c644bb83761 258 /**
ddakev 0:4c644bb83761 259 * Reads a single byte from the specified MMA8452 register.
ddakev 0:4c644bb83761 260 *
ddakev 0:4c644bb83761 261 * @param addr The internal register address.
ddakev 0:4c644bb83761 262 * @param dst The destination buffer address.
ddakev 0:4c644bb83761 263 * @return 1 on success, 0 on failure.
ddakev 0:4c644bb83761 264 */
ddakev 0:4c644bb83761 265 int readRegister(char addr, char *dst);
ddakev 0:4c644bb83761 266
ddakev 0:4c644bb83761 267 /**
ddakev 0:4c644bb83761 268 * Reads n bytes from the specified MMA8452 register.
ddakev 0:4c644bb83761 269 *
ddakev 0:4c644bb83761 270 * @param addr The internal register address.
ddakev 0:4c644bb83761 271 * @param dst The destination buffer address.
ddakev 0:4c644bb83761 272 * @param nbytes The number of bytes to read.
ddakev 0:4c644bb83761 273 * @return 1 on success, 0 on failure.
ddakev 0:4c644bb83761 274 */
ddakev 0:4c644bb83761 275 int readRegister(char addr, char *dst, int nbytes);
ddakev 0:4c644bb83761 276
ddakev 0:4c644bb83761 277 /**
ddakev 0:4c644bb83761 278 * Write to the specified MMA8452 register.
ddakev 0:4c644bb83761 279 *
ddakev 0:4c644bb83761 280 * @param addr The internal register address
ddakev 0:4c644bb83761 281 * @param data Data byte to write
ddakev 0:4c644bb83761 282 */
ddakev 0:4c644bb83761 283 int writeRegister(char addr, char data);
ddakev 0:4c644bb83761 284
ddakev 0:4c644bb83761 285 /**
ddakev 0:4c644bb83761 286 * Write a data buffer to the specified MMA8452 register.
ddakev 0:4c644bb83761 287 *
ddakev 0:4c644bb83761 288 * @param addr The internal register address
ddakev 0:4c644bb83761 289 * @param data Pointer to data buffer to write
ddakev 0:4c644bb83761 290 * @param nbytes The length of the data buffer to write
ddakev 0:4c644bb83761 291 */
ddakev 0:4c644bb83761 292 int writeRegister(char addr, char *data, int nbytes);
ddakev 0:4c644bb83761 293
ddakev 0:4c644bb83761 294 int setDynamicRange(DynamicRange range, int toggleActivation=1);
ddakev 0:4c644bb83761 295 int setBitDepth(BitDepth depth, int toggleActivation=1);
ddakev 0:4c644bb83761 296 int setDataRate(DataRateHz dataRate, int toggleActivation=1);
ddakev 0:4c644bb83761 297
ddakev 0:4c644bb83761 298 DynamicRange getDynamicRange();
ddakev 0:4c644bb83761 299 DataRateHz getDataRate();
ddakev 0:4c644bb83761 300 BitDepth getBitDepth();
ddakev 0:4c644bb83761 301
ddakev 0:4c644bb83761 302 #ifdef MMA8452_DEBUG
ddakev 0:4c644bb83761 303 void debugRegister(char reg);
ddakev 0:4c644bb83761 304 #endif
ddakev 0:4c644bb83761 305
ddakev 0:4c644bb83761 306 private:
ddakev 0:4c644bb83761 307 /**
ddakev 0:4c644bb83761 308 * Reads the specified register, applies the mask with logical AND, logical ORs the value
ddakev 0:4c644bb83761 309 * and writes back the result to the register. If toggleActivation is set to true then the
ddakev 0:4c644bb83761 310 * device is put in standby before the operation, and activated at the end.
ddakev 0:4c644bb83761 311 * Setting it to false is useful for setting options on a device that you want to keep in
ddakev 0:4c644bb83761 312 * standby.
ddakev 0:4c644bb83761 313 */
ddakev 0:4c644bb83761 314 int maskAndApplyRegister(char reg, char mask, char value, int toggleActivation);
ddakev 0:4c644bb83761 315
ddakev 0:4c644bb83761 316 /// Reads the specified register, applies the mask with logical AND, and writes the result back.
ddakev 0:4c644bb83761 317 int logicalANDRegister(char addr, char mask);
ddakev 0:4c644bb83761 318 /// Reads the specified register, applies the mask with logical OR, and writes the result back.
ddakev 0:4c644bb83761 319 int logicalORRegister(char addr, char mask);
ddakev 0:4c644bb83761 320 /// Reads the specified register, applies the mask with logical XOR, and writes the result back.
ddakev 0:4c644bb83761 321 int logicalXORRegister(char addr, char mask);
ddakev 0:4c644bb83761 322
ddakev 0:4c644bb83761 323 /// Converts the 12-bit two's complement number in buf to a signed integer. Returns the integer.
ddakev 0:4c644bb83761 324 int twelveBitToSigned(char *buf);
ddakev 0:4c644bb83761 325 /// Converts the 8-bit two's complement number in buf to a signed integer. Returns the integer.
ddakev 0:4c644bb83761 326 int eightBitToSigned(char *buf);
ddakev 0:4c644bb83761 327
ddakev 0:4c644bb83761 328 /// Converts a count to a gravity using the supplied countsPerG. Returns the gravity.
ddakev 0:4c644bb83761 329 double convertCountToGravity(int count, int countsPerG);
ddakev 0:4c644bb83761 330
ddakev 0:4c644bb83761 331 /// Reads the register at addr, applies the mask with logical AND, and returns the result.
ddakev 0:4c644bb83761 332 char getMaskedRegister(int addr, char mask);
ddakev 0:4c644bb83761 333
ddakev 0:4c644bb83761 334 /// Get the counts per G for the current settings of bit depth and dynamic range.
ddakev 0:4c644bb83761 335 int getCountsPerG();
ddakev 0:4c644bb83761 336
ddakev 0:4c644bb83761 337 SoftI2C _i2c;
ddakev 0:4c644bb83761 338 int _frequency;
ddakev 0:4c644bb83761 339 int _readAddress;
ddakev 0:4c644bb83761 340 int _writeAddress;
ddakev 0:4c644bb83761 341
ddakev 0:4c644bb83761 342 BitDepth _bitDepth;
ddakev 0:4c644bb83761 343 DynamicRange _dynamicRange;
ddakev 0:4c644bb83761 344 };