Nick melas / MMA8451Q

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Fork of MMA8451Q by Johan Kritzinger

MMA8451Q.h@6:26a391348e7c, 2018-03-07 (annotated)

Committer:
nikolaosdmelas
Date:
Wed Mar 07 11:40:05 2018 +0000
Revision:
6:26a391348e7c
Parent:
5:2d14600116fc 
none

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();
nikolaosdmelas 6:26a391348e7c 72 uint8_t get_source_reg_value();
nikolaosdmelas 6:26a391348e7c 73 void disable_lpfilter();
nikolaosdmelas 6:26a391348e7c 74 void disable_hpfilter();
samux 1:d2630136d51e 75 /**
emilmont 0:6149091f755d 76 * Get X axis acceleration
emilmont 0:6149091f755d 77 *
samux 1:d2630136d51e 78 * @returns X axis acceleration
emilmont 0:6149091f755d 79 */
chris 3:db7126dbd63f 80 float getAccX();
emilmont 0:6149091f755d 81
samux 1:d2630136d51e 82 /**
emilmont 0:6149091f755d 83 * Get Y axis acceleration
emilmont 0:6149091f755d 84 *
samux 1:d2630136d51e 85 * @returns Y axis acceleration
emilmont 0:6149091f755d 86 */
chris 3:db7126dbd63f 87 float getAccY();
emilmont 0:6149091f755d 88
samux 1:d2630136d51e 89 /**
emilmont 0:6149091f755d 90 * Get Z axis acceleration
emilmont 0:6149091f755d 91 *
samux 1:d2630136d51e 92 * @returns Z axis acceleration
emilmont 0:6149091f755d 93 */
chris 3:db7126dbd63f 94 float getAccZ();
emilmont 0:6149091f755d 95
samux 1:d2630136d51e 96 /**
emilmont 0:6149091f755d 97 * Get XYZ axis acceleration
emilmont 0:6149091f755d 98 *
samux 1:d2630136d51e 99 * @param res array where acceleration data will be stored
emilmont 0:6149091f755d 100 */
chris 3:db7126dbd63f 101 void getAccAllAxis(float * res);
JoKer 5:2d14600116fc 102
nikolaosdmelas 6:26a391348e7c 103 void clearReg(void);
JoKer 5:2d14600116fc 104 /** JK
JoKer 5:2d14600116fc 105 * Setup Double Tap detection
JoKer 5:2d14600116fc 106
JoKer 5:2d14600116fc 107
JoKer 5:2d14600116fc 108 Example:
JoKer 5:2d14600116fc 109
JoKer 5:2d14600116fc 110 #include "mbed.h"
JoKer 5:2d14600116fc 111 #include "MMA8451Q.h"
JoKer 5:2d14600116fc 112
JoKer 5:2d14600116fc 113 #define MMA8451_I2C_ADDRESS (0x1d<<1)
JoKer 5:2d14600116fc 114 #define ON 0
JoKer 5:2d14600116fc 115 #define OFF !ON
JoKer 5:2d14600116fc 116
JoKer 5:2d14600116fc 117 //Setup the interrupts for the MMA8451Q
JoKer 5:2d14600116fc 118 InterruptIn accInt1(PTA14);
JoKer 5:2d14600116fc 119 InterruptIn accInt2(PTA15);//not used in this prog but this is the other int from the accelorometer
JoKer 5:2d14600116fc 120
JoKer 5:2d14600116fc 121 uint8_t togstat=0;//Led status
JoKer 5:2d14600116fc 122 DigitalOut bled(LED_BLUE);
JoKer 5:2d14600116fc 123
JoKer 5:2d14600116fc 124
JoKer 5:2d14600116fc 125 void tapTrue(void){//ISR
JoKer 5:2d14600116fc 126 if(togstat == 0){
JoKer 5:2d14600116fc 127 togstat = 1;
JoKer 5:2d14600116fc 128 bled=ON;
JoKer 5:2d14600116fc 129 } else {
JoKer 5:2d14600116fc 130 togstat = 0;
JoKer 5:2d14600116fc 131 bled=OFF;
JoKer 5:2d14600116fc 132 }
JoKer 5:2d14600116fc 133
JoKer 5:2d14600116fc 134 }
JoKer 5:2d14600116fc 135
JoKer 5:2d14600116fc 136
JoKer 5:2d14600116fc 137 int main(void) {
JoKer 5:2d14600116fc 138
JoKer 5:2d14600116fc 139 MMA8451Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS);//accelorometer instance
JoKer 5:2d14600116fc 140
JoKer 5:2d14600116fc 141 acc.setDoubleTap();//Setup the MMA8451Q to look for a double Tap
JoKer 5:2d14600116fc 142 accInt1.rise(&tapTrue);//call tapTrue when an interrupt is generated on PTA14
JoKer 5:2d14600116fc 143
JoKer 5:2d14600116fc 144 while (true) {
JoKer 5:2d14600116fc 145 //Interrupt driven so nothing in main loop
JoKer 5:2d14600116fc 146 }
JoKer 5:2d14600116fc 147 }
JoKer 5:2d14600116fc 148
JoKer 5:2d14600116fc 149
JoKer 5:2d14600116fc 150 */
JoKer 5:2d14600116fc 151 void setDoubleTap(void);
nikolaosdmelas 6:26a391348e7c 152 void lv1setSingleTap();
nikolaosdmelas 6:26a391348e7c 153 void lv2setSingleTap();
nikolaosdmelas 6:26a391348e7c 154 uint8_t get_hpfilter_value();
emilmont 0:6149091f755d 155 private:
samux 1:d2630136d51e 156 I2C m_i2c;
emilmont 0:6149091f755d 157 int m_addr;
samux 1:d2630136d51e 158 void readRegs(int addr, uint8_t * data, int len);
samux 1:d2630136d51e 159 void writeRegs(uint8_t * data, int len);
emilmont 0:6149091f755d 160 int16_t getAccAxis(uint8_t addr);
emilmont 0:6149091f755d 161
emilmont 0:6149091f755d 162 };
emilmont 0:6149091f755d 163
nikolaosdmelas 6:26a391348e7c 164
nikolaosdmelas 6:26a391348e7c 165
nikolaosdmelas 6:26a391348e7c 166
emilmont 0:6149091f755d 167 #endif
nikolaosdmelas 6:26a391348e7c 168
nikolaosdmelas 6:26a391348e7c 169