Jorge Hernandez / MMA8451Q

Modified to also return int16_t values.

Fork of MMA8451Q by Johan Kritzinger

MMA8451Q.h@6:2511055a5dd2, 2013-06-07 (annotated)

Committer:
jhestolano
Date:
Fri Jun 07 03:14:46 2013 +0000
Revision:
6:2511055a5dd2
Parent:
5:2d14600116fc 
Modified to return int16_t values instead of float type.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
samux 1:d2630136d51e 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
samux 1:d2630136d51e 2 *
samux 1:d2630136d51e 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
samux 1:d2630136d51e 4 * and associated documentation files (the "Software"), to deal in the Software without
samux 1:d2630136d51e 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
samux 1:d2630136d51e 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
samux 1:d2630136d51e 7 * Software is furnished to do so, subject to the following conditions:
samux 1:d2630136d51e 8 *
samux 1:d2630136d51e 9 * The above copyright notice and this permission notice shall be included in all copies or
samux 1:d2630136d51e 10 * substantial portions of the Software.
samux 1:d2630136d51e 11 *
samux 1:d2630136d51e 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
samux 1:d2630136d51e 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
samux 1:d2630136d51e 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
samux 1:d2630136d51e 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
samux 1:d2630136d51e 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
samux 1:d2630136d51e 17 */
samux 1:d2630136d51e 18
emilmont 0:6149091f755d 19 #ifndef MMA8451Q_H
emilmont 0:6149091f755d 20 #define MMA8451Q_H
emilmont 0:6149091f755d 21
emilmont 0:6149091f755d 22 #include "mbed.h"
emilmont 0:6149091f755d 23
samux 1:d2630136d51e 24 /**
samux 1:d2630136d51e 25 * MMA8451Q accelerometer example
samux 2:a077541cbadc 26 *
samux 2:a077541cbadc 27 * @code
samux 1:d2630136d51e 28 * #include "mbed.h"
samux 1:d2630136d51e 29 * #include "MMA8451Q.h"
chris 3:db7126dbd63f 30 *
samux 1:d2630136d51e 31 * #define MMA8451_I2C_ADDRESS (0x1d<<1)
chris 3:db7126dbd63f 32 *
chris 4:c4d879a39775 33 * int main(void) {
chris 4:c4d879a39775 34 *
chris 3:db7126dbd63f 35 * MMA8451Q acc(P_E25, P_E24, MMA8451_I2C_ADDRESS);
chris 3:db7126dbd63f 36 * PwmOut rled(LED_RED);
chris 3:db7126dbd63f 37 * PwmOut gled(LED_GREEN);
chris 3:db7126dbd63f 38 * PwmOut bled(LED_BLUE);
chris 3:db7126dbd63f 39 *
chris 3:db7126dbd63f 40 * while (true) {
chris 3:db7126dbd63f 41 * rled = 1.0 - abs(acc.getAccX());
chris 3:db7126dbd63f 42 * gled = 1.0 - abs(acc.getAccY());
chris 3:db7126dbd63f 43 * bled = 1.0 - abs(acc.getAccZ());
chris 3:db7126dbd63f 44 * wait(0.1);
chris 3:db7126dbd63f 45 * }
samux 1:d2630136d51e 46 * }
samux 2:a077541cbadc 47 * @endcode
samux 1:d2630136d51e 48 */
emilmont 0:6149091f755d 49 class MMA8451Q
emilmont 0:6149091f755d 50 {
emilmont 0:6149091f755d 51 public:
samux 1:d2630136d51e 52 /**
samux 1:d2630136d51e 53 * MMA8451Q constructor
samux 1:d2630136d51e 54 *
samux 1:d2630136d51e 55 * @param sda SDA pin
samux 1:d2630136d51e 56 * @param sdl SCL pin
samux 1:d2630136d51e 57 * @param addr addr of the I2C peripheral
emilmont 0:6149091f755d 58 */
emilmont 0:6149091f755d 59 MMA8451Q(PinName sda, PinName scl, int addr);
emilmont 0:6149091f755d 60
samux 1:d2630136d51e 61 /**
samux 1:d2630136d51e 62 * MMA8451Q destructor
emilmont 0:6149091f755d 63 */
emilmont 0:6149091f755d 64 ~MMA8451Q();
emilmont 0:6149091f755d 65
samux 1:d2630136d51e 66 /**
emilmont 0:6149091f755d 67 * Get the value of the WHO_AM_I register
emilmont 0:6149091f755d 68 *
samux 1:d2630136d51e 69 * @returns WHO_AM_I value
emilmont 0:6149091f755d 70 */
emilmont 0:6149091f755d 71 uint8_t getWhoAmI();
emilmont 0:6149091f755d 72
samux 1:d2630136d51e 73 /**
emilmont 0:6149091f755d 74 * Get X axis acceleration
emilmont 0:6149091f755d 75 *
samux 1:d2630136d51e 76 * @returns X axis acceleration
emilmont 0:6149091f755d 77 */
chris 3:db7126dbd63f 78 float getAccX();
emilmont 0:6149091f755d 79
samux 1:d2630136d51e 80 /**
emilmont 0:6149091f755d 81 * Get Y axis acceleration
emilmont 0:6149091f755d 82 *
samux 1:d2630136d51e 83 * @returns Y axis acceleration
emilmont 0:6149091f755d 84 */
chris 3:db7126dbd63f 85 float getAccY();
emilmont 0:6149091f755d 86
samux 1:d2630136d51e 87 /**
emilmont 0:6149091f755d 88 * Get Z axis acceleration
emilmont 0:6149091f755d 89 *
samux 1:d2630136d51e 90 * @returns Z axis acceleration
emilmont 0:6149091f755d 91 */
chris 3:db7126dbd63f 92 float getAccZ();
emilmont 0:6149091f755d 93
samux 1:d2630136d51e 94 /**
emilmont 0:6149091f755d 95 * Get XYZ axis acceleration
emilmont 0:6149091f755d 96 *
samux 1:d2630136d51e 97 * @param res array where acceleration data will be stored
emilmont 0:6149091f755d 98 */
chris 3:db7126dbd63f 99 void getAccAllAxis(float * res);
JoKer 5:2d14600116fc 100
jhestolano 6:2511055a5dd2 101 /*******************************************************/
jhestolano 6:2511055a5dd2 102
jhestolano 6:2511055a5dd2 103 int16_t getAccX_int();
jhestolano 6:2511055a5dd2 104 int16_t getAccY_int();
jhestolano 6:2511055a5dd2 105 int16_t getAccZ_int();
jhestolano 6:2511055a5dd2 106 void getAccAllAxis_int(int16_t* res);
jhestolano 6:2511055a5dd2 107
jhestolano 6:2511055a5dd2 108 /*******************************************************/
jhestolano 6:2511055a5dd2 109
jhestolano 6:2511055a5dd2 110
JoKer 5:2d14600116fc 111 /** JK
JoKer 5:2d14600116fc 112 * Setup Double Tap detection
JoKer 5:2d14600116fc 113
JoKer 5:2d14600116fc 114 Example:
JoKer 5:2d14600116fc 115
JoKer 5:2d14600116fc 116 #include "mbed.h"
JoKer 5:2d14600116fc 117 #include "MMA8451Q.h"
JoKer 5:2d14600116fc 118
JoKer 5:2d14600116fc 119 #define MMA8451_I2C_ADDRESS (0x1d<<1)
JoKer 5:2d14600116fc 120 #define ON 0
JoKer 5:2d14600116fc 121 #define OFF !ON
JoKer 5:2d14600116fc 122
JoKer 5:2d14600116fc 123 //Setup the interrupts for the MMA8451Q
JoKer 5:2d14600116fc 124 InterruptIn accInt1(PTA14);
JoKer 5:2d14600116fc 125 InterruptIn accInt2(PTA15);//not used in this prog but this is the other int from the accelorometer
JoKer 5:2d14600116fc 126
JoKer 5:2d14600116fc 127 uint8_t togstat=0;//Led status
JoKer 5:2d14600116fc 128 DigitalOut bled(LED_BLUE);
JoKer 5:2d14600116fc 129
JoKer 5:2d14600116fc 130
JoKer 5:2d14600116fc 131 void tapTrue(void){//ISR
JoKer 5:2d14600116fc 132 if(togstat == 0){
JoKer 5:2d14600116fc 133 togstat = 1;
JoKer 5:2d14600116fc 134 bled=ON;
JoKer 5:2d14600116fc 135 } else {
JoKer 5:2d14600116fc 136 togstat = 0;
JoKer 5:2d14600116fc 137 bled=OFF;
JoKer 5:2d14600116fc 138 }
JoKer 5:2d14600116fc 139
JoKer 5:2d14600116fc 140 }
JoKer 5:2d14600116fc 141
JoKer 5:2d14600116fc 142
JoKer 5:2d14600116fc 143 int main(void) {
JoKer 5:2d14600116fc 144
JoKer 5:2d14600116fc 145 MMA8451Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS);//accelorometer instance
JoKer 5:2d14600116fc 146
JoKer 5:2d14600116fc 147 acc.setDoubleTap();//Setup the MMA8451Q to look for a double Tap
JoKer 5:2d14600116fc 148 accInt1.rise(&tapTrue);//call tapTrue when an interrupt is generated on PTA14
JoKer 5:2d14600116fc 149
JoKer 5:2d14600116fc 150 while (true) {
JoKer 5:2d14600116fc 151 //Interrupt driven so nothing in main loop
JoKer 5:2d14600116fc 152 }
JoKer 5:2d14600116fc 153 }
JoKer 5:2d14600116fc 154
JoKer 5:2d14600116fc 155
JoKer 5:2d14600116fc 156 */
JoKer 5:2d14600116fc 157 void setDoubleTap(void);
emilmont 0:6149091f755d 158
emilmont 0:6149091f755d 159 private:
samux 1:d2630136d51e 160 I2C m_i2c;
emilmont 0:6149091f755d 161 int m_addr;
samux 1:d2630136d51e 162 void readRegs(int addr, uint8_t * data, int len);
samux 1:d2630136d51e 163 void writeRegs(uint8_t * data, int len);
emilmont 0:6149091f755d 164 int16_t getAccAxis(uint8_t addr);
emilmont 0:6149091f755d 165
emilmont 0:6149091f755d 166 };
emilmont 0:6149091f755d 167
emilmont 0:6149091f755d 168 #endif