JP PANG / MMA8491Q

modified from MMA8451Q

Dependents:   XtrinsicSensorEVK SDFileSystem_HelloWorld5_copy xtrinsic_sensors

MMA8491Q.h@1:2d4b7fadb1e6, 2013-10-14 (annotated)

Committer:
jppang
Date:
Mon Oct 14 15:00:36 2013 +0000
Revision:
1:2d4b7fadb1e6
Parent:
0:41db55eef564 
modified from MMA8451Q

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jppang 0:41db55eef564 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
jppang 0:41db55eef564 2 *
jppang 0:41db55eef564 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
jppang 0:41db55eef564 4 * and associated documentation files (the "Software"), to deal in the Software without
jppang 0:41db55eef564 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
jppang 0:41db55eef564 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
jppang 0:41db55eef564 7 * Software is furnished to do so, subject to the following conditions:
jppang 0:41db55eef564 8 *
jppang 0:41db55eef564 9 * The above copyright notice and this permission notice shall be included in all copies or
jppang 0:41db55eef564 10 * substantial portions of the Software.
jppang 0:41db55eef564 11 *
jppang 0:41db55eef564 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
jppang 0:41db55eef564 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
jppang 0:41db55eef564 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
jppang 0:41db55eef564 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
jppang 0:41db55eef564 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
jppang 0:41db55eef564 17 */
jppang 0:41db55eef564 18
jppang 0:41db55eef564 19 #ifndef MMA8491Q_H
jppang 0:41db55eef564 20 #define MMA8491Q_H
jppang 0:41db55eef564 21
jppang 0:41db55eef564 22 #include "mbed.h"
jppang 0:41db55eef564 23
jppang 0:41db55eef564 24 /**
jppang 0:41db55eef564 25 * MMA8491Q accelerometer example
jppang 0:41db55eef564 26 *
jppang 0:41db55eef564 27 * @code
jppang 0:41db55eef564 28 * #include "mbed.h"
jppang 0:41db55eef564 29 * #include "MMA8491Q.h"
jppang 0:41db55eef564 30 *
jppang 0:41db55eef564 31 * #define MMA8451_I2C_ADDRESS (0x1d<<1)
jppang 0:41db55eef564 32 *
jppang 0:41db55eef564 33 * int main(void) {
jppang 0:41db55eef564 34 *
jppang 0:41db55eef564 35 * MMA8491Q acc(P_E25, P_E24, MMA8491_I2C_ADDRESS);
jppang 0:41db55eef564 36 * PwmOut rled(LED_RED);
jppang 0:41db55eef564 37 * PwmOut gled(LED_GREEN);
jppang 0:41db55eef564 38 * PwmOut bled(LED_BLUE);
jppang 0:41db55eef564 39 *
jppang 0:41db55eef564 40 * while (true) {
jppang 0:41db55eef564 41 * rled = 1.0 - abs(acc.getAccX());
jppang 0:41db55eef564 42 * gled = 1.0 - abs(acc.getAccY());
jppang 0:41db55eef564 43 * bled = 1.0 - abs(acc.getAccZ());
jppang 0:41db55eef564 44 * wait(0.1);
jppang 0:41db55eef564 45 * }
jppang 0:41db55eef564 46 * }
jppang 0:41db55eef564 47 * @endcode
jppang 0:41db55eef564 48 */
jppang 0:41db55eef564 49 class MMA8491Q
jppang 0:41db55eef564 50 {
jppang 0:41db55eef564 51 public:
jppang 0:41db55eef564 52 /**
jppang 0:41db55eef564 53 * MMA8491Q constructor
jppang 0:41db55eef564 54 *
jppang 0:41db55eef564 55 * @param sda SDA pin
jppang 0:41db55eef564 56 * @param sdl SCL pin
jppang 0:41db55eef564 57 * @param addr addr of the I2C peripheral
jppang 0:41db55eef564 58 */
jppang 0:41db55eef564 59 MMA8491Q(PinName sda, PinName scl, int addr);
jppang 1:2d4b7fadb1e6 60
jppang 1:2d4b7fadb1e6 61 // MMA8491Q(PinName sda, PinName scl, int addr, PinName Xout, PinName Yout, PinName Zout);
jppang 0:41db55eef564 62
jppang 0:41db55eef564 63 /**
jppang 0:41db55eef564 64 * MMA8491Q destructor
jppang 0:41db55eef564 65 */
jppang 0:41db55eef564 66 ~MMA8491Q();
jppang 0:41db55eef564 67
jppang 0:41db55eef564 68 /**
jppang 0:41db55eef564 69 * Get the value of the WHO_AM_I register
jppang 0:41db55eef564 70 *
jppang 0:41db55eef564 71 * @returns WHO_AM_I value
jppang 0:41db55eef564 72 */
jppang 0:41db55eef564 73 uint8_t getWhoAmI();
jppang 0:41db55eef564 74
jppang 0:41db55eef564 75 /**
jppang 0:41db55eef564 76 * Get X axis acceleration
jppang 0:41db55eef564 77 *
jppang 0:41db55eef564 78 * @returns X axis acceleration
jppang 0:41db55eef564 79 */
jppang 0:41db55eef564 80 float getAccX();
jppang 0:41db55eef564 81
jppang 0:41db55eef564 82 /**
jppang 0:41db55eef564 83 * Get Y axis acceleration
jppang 0:41db55eef564 84 *
jppang 0:41db55eef564 85 * @returns Y axis acceleration
jppang 0:41db55eef564 86 */
jppang 0:41db55eef564 87 float getAccY();
jppang 0:41db55eef564 88
jppang 0:41db55eef564 89 /**
jppang 0:41db55eef564 90 * Get Z axis acceleration
jppang 0:41db55eef564 91 *
jppang 0:41db55eef564 92 * @returns Z axis acceleration
jppang 0:41db55eef564 93 */
jppang 0:41db55eef564 94 float getAccZ();
jppang 0:41db55eef564 95
jppang 0:41db55eef564 96 /**
jppang 0:41db55eef564 97 * Get XYZ axis acceleration
jppang 0:41db55eef564 98 *
jppang 0:41db55eef564 99 * @param res array where acceleration data will be stored
jppang 0:41db55eef564 100 */
jppang 0:41db55eef564 101 void getAccAllAxis(float * res);
jppang 0:41db55eef564 102
jppang 0:41db55eef564 103 /** JK
jppang 0:41db55eef564 104 * Setup Double Tap detection
jppang 0:41db55eef564 105
jppang 0:41db55eef564 106
jppang 0:41db55eef564 107 Example:
jppang 0:41db55eef564 108
jppang 0:41db55eef564 109 #include "mbed.h"
jppang 0:41db55eef564 110 #include "MMA8491Q.h"
jppang 0:41db55eef564 111
jppang 0:41db55eef564 112 #define MMA8451_I2C_ADDRESS (0x1d<<1)
jppang 0:41db55eef564 113 #define ON 0
jppang 0:41db55eef564 114 #define OFF !ON
jppang 0:41db55eef564 115
jppang 0:41db55eef564 116 //Setup the interrupts for the MMA8491Q
jppang 0:41db55eef564 117 InterruptIn accInt1(PTA14);
jppang 0:41db55eef564 118 InterruptIn accInt2(PTA15);//not used in this prog but this is the other int from the accelorometer
jppang 0:41db55eef564 119
jppang 0:41db55eef564 120 uint8_t togstat=0;//Led status
jppang 0:41db55eef564 121 DigitalOut bled(LED_BLUE);
jppang 0:41db55eef564 122
jppang 0:41db55eef564 123
jppang 0:41db55eef564 124 void tapTrue(void){//ISR
jppang 0:41db55eef564 125 if(togstat == 0){
jppang 0:41db55eef564 126 togstat = 1;
jppang 0:41db55eef564 127 bled=ON;
jppang 0:41db55eef564 128 } else {
jppang 0:41db55eef564 129 togstat = 0;
jppang 0:41db55eef564 130 bled=OFF;
jppang 0:41db55eef564 131 }
jppang 0:41db55eef564 132
jppang 0:41db55eef564 133 }
jppang 0:41db55eef564 134
jppang 0:41db55eef564 135
jppang 0:41db55eef564 136 int main(void) {
jppang 0:41db55eef564 137
jppang 0:41db55eef564 138 MMA8491Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS);//accelorometer instance
jppang 0:41db55eef564 139
jppang 0:41db55eef564 140 acc.setDoubleTap();//Setup the MMA8491Q to look for a double Tap
jppang 0:41db55eef564 141 accInt1.rise(&tapTrue);//call tapTrue when an interrupt is generated on PTA14
jppang 0:41db55eef564 142
jppang 0:41db55eef564 143 while (true) {
jppang 0:41db55eef564 144 //Interrupt driven so nothing in main loop
jppang 0:41db55eef564 145 }
jppang 0:41db55eef564 146 }
jppang 0:41db55eef564 147
jppang 0:41db55eef564 148
jppang 0:41db55eef564 149 */
jppang 0:41db55eef564 150 void setDoubleTap(void);
jppang 0:41db55eef564 151
jppang 0:41db55eef564 152 private:
jppang 0:41db55eef564 153 I2C m_i2c;
jppang 0:41db55eef564 154 int m_addr;
jppang 0:41db55eef564 155 void readRegs(int addr, uint8_t * data, int len);
jppang 0:41db55eef564 156 void writeRegs(uint8_t * data, int len);
jppang 0:41db55eef564 157 int16_t getAccAxis(uint8_t addr);
jppang 1:2d4b7fadb1e6 158
jppang 0:41db55eef564 159
jppang 0:41db55eef564 160 };
jppang 0:41db55eef564 161
jppang 0:41db55eef564 162 #endif