Junaid Ahmed / Mbed 2 deprecated 202A_hw1_maxrate

Generate the maximum sampling rate

Dependencies:   MAG31101 mbed

MMA8451Q/MMA8451Q.h@0:d62b58e30f71, 2014-02-15 (annotated)

Committer:
mja054
Date:
Sat Feb 15 01:05:44 2014 +0000
Revision:
0:d62b58e30f71
Generate the maximum sampling rate

Who changed what in which revision?

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mja054 0:d62b58e30f71 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
mja054 0:d62b58e30f71 2 *
mja054 0:d62b58e30f71 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
mja054 0:d62b58e30f71 4 * and associated documentation files (the "Software"), to deal in the Software without
mja054 0:d62b58e30f71 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
mja054 0:d62b58e30f71 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
mja054 0:d62b58e30f71 7 * Software is furnished to do so, subject to the following conditions:
mja054 0:d62b58e30f71 8 *
mja054 0:d62b58e30f71 9 * The above copyright notice and this permission notice shall be included in all copies or
mja054 0:d62b58e30f71 10 * substantial portions of the Software.
mja054 0:d62b58e30f71 11 *
mja054 0:d62b58e30f71 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
mja054 0:d62b58e30f71 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
mja054 0:d62b58e30f71 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
mja054 0:d62b58e30f71 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mja054 0:d62b58e30f71 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
mja054 0:d62b58e30f71 17 */
mja054 0:d62b58e30f71 18
mja054 0:d62b58e30f71 19 #ifndef MMA8451Q_H
mja054 0:d62b58e30f71 20 #define MMA8451Q_H
mja054 0:d62b58e30f71 21
mja054 0:d62b58e30f71 22 #include "mbed.h"
mja054 0:d62b58e30f71 23
mja054 0:d62b58e30f71 24 /**
mja054 0:d62b58e30f71 25 * MMA8451Q accelerometer example
mja054 0:d62b58e30f71 26 *
mja054 0:d62b58e30f71 27 * @code
mja054 0:d62b58e30f71 28 * #include "mbed.h"
mja054 0:d62b58e30f71 29 * #include "MMA8451Q.h"
mja054 0:d62b58e30f71 30 *
mja054 0:d62b58e30f71 31 * #define MMA8451_I2C_ADDRESS (0x1d<<1)
mja054 0:d62b58e30f71 32 *
mja054 0:d62b58e30f71 33 * int main(void) {
mja054 0:d62b58e30f71 34 *
mja054 0:d62b58e30f71 35 * MMA8451Q acc(P_E25, P_E24, MMA8451_I2C_ADDRESS);
mja054 0:d62b58e30f71 36 * PwmOut rled(LED_RED);
mja054 0:d62b58e30f71 37 * PwmOut gled(LED_GREEN);
mja054 0:d62b58e30f71 38 * PwmOut bled(LED_BLUE);
mja054 0:d62b58e30f71 39 *
mja054 0:d62b58e30f71 40 * while (true) {
mja054 0:d62b58e30f71 41 * rled = 1.0 - abs(acc.getAccX());
mja054 0:d62b58e30f71 42 * gled = 1.0 - abs(acc.getAccY());
mja054 0:d62b58e30f71 43 * bled = 1.0 - abs(acc.getAccZ());
mja054 0:d62b58e30f71 44 * wait(0.1);
mja054 0:d62b58e30f71 45 * }
mja054 0:d62b58e30f71 46 * }
mja054 0:d62b58e30f71 47 * @endcode
mja054 0:d62b58e30f71 48 */
mja054 0:d62b58e30f71 49 class MMA8451Q
mja054 0:d62b58e30f71 50 {
mja054 0:d62b58e30f71 51 public:
mja054 0:d62b58e30f71 52 /**
mja054 0:d62b58e30f71 53 * MMA8451Q constructor
mja054 0:d62b58e30f71 54 *
mja054 0:d62b58e30f71 55 * @param sda SDA pin
mja054 0:d62b58e30f71 56 * @param sdl SCL pin
mja054 0:d62b58e30f71 57 * @param addr addr of the I2C peripheral
mja054 0:d62b58e30f71 58 */
mja054 0:d62b58e30f71 59 MMA8451Q(PinName sda, PinName scl, int addr);
mja054 0:d62b58e30f71 60
mja054 0:d62b58e30f71 61 /**
mja054 0:d62b58e30f71 62 * MMA8451Q destructor
mja054 0:d62b58e30f71 63 */
mja054 0:d62b58e30f71 64 ~MMA8451Q();
mja054 0:d62b58e30f71 65
mja054 0:d62b58e30f71 66 /**
mja054 0:d62b58e30f71 67 * Get the value of the WHO_AM_I register
mja054 0:d62b58e30f71 68 *
mja054 0:d62b58e30f71 69 * @returns WHO_AM_I value
mja054 0:d62b58e30f71 70 */
mja054 0:d62b58e30f71 71 uint8_t getWhoAmI();
mja054 0:d62b58e30f71 72
mja054 0:d62b58e30f71 73 /**
mja054 0:d62b58e30f71 74 * Get X axis acceleration
mja054 0:d62b58e30f71 75 *
mja054 0:d62b58e30f71 76 * @returns X axis acceleration
mja054 0:d62b58e30f71 77 */
mja054 0:d62b58e30f71 78 float getAccX();
mja054 0:d62b58e30f71 79
mja054 0:d62b58e30f71 80 /**
mja054 0:d62b58e30f71 81 * Get Y axis acceleration
mja054 0:d62b58e30f71 82 *
mja054 0:d62b58e30f71 83 * @returns Y axis acceleration
mja054 0:d62b58e30f71 84 */
mja054 0:d62b58e30f71 85 float getAccY();
mja054 0:d62b58e30f71 86
mja054 0:d62b58e30f71 87 /**
mja054 0:d62b58e30f71 88 * Get Z axis acceleration
mja054 0:d62b58e30f71 89 *
mja054 0:d62b58e30f71 90 * @returns Z axis acceleration
mja054 0:d62b58e30f71 91 */
mja054 0:d62b58e30f71 92 float getAccZ();
mja054 0:d62b58e30f71 93
mja054 0:d62b58e30f71 94 /**
mja054 0:d62b58e30f71 95 * Get XYZ axis acceleration
mja054 0:d62b58e30f71 96 *
mja054 0:d62b58e30f71 97 * @param res array where acceleration data will be stored
mja054 0:d62b58e30f71 98 */
mja054 0:d62b58e30f71 99 void getAccAllAxis(float * res);
mja054 0:d62b58e30f71 100
mja054 0:d62b58e30f71 101 /** JK
mja054 0:d62b58e30f71 102 * Setup Double Tap detection
mja054 0:d62b58e30f71 103
mja054 0:d62b58e30f71 104
mja054 0:d62b58e30f71 105 Example:
mja054 0:d62b58e30f71 106
mja054 0:d62b58e30f71 107 #include "mbed.h"
mja054 0:d62b58e30f71 108 #include "MMA8451Q.h"
mja054 0:d62b58e30f71 109
mja054 0:d62b58e30f71 110 #define MMA8451_I2C_ADDRESS (0x1d<<1)
mja054 0:d62b58e30f71 111 #define ON 0
mja054 0:d62b58e30f71 112 #define OFF !ON
mja054 0:d62b58e30f71 113
mja054 0:d62b58e30f71 114 //Setup the interrupts for the MMA8451Q
mja054 0:d62b58e30f71 115 InterruptIn accInt1(PTA14);
mja054 0:d62b58e30f71 116 InterruptIn accInt2(PTA15);//not used in this prog but this is the other int from the accelorometer
mja054 0:d62b58e30f71 117
mja054 0:d62b58e30f71 118 uint8_t togstat=0;//Led status
mja054 0:d62b58e30f71 119 DigitalOut bled(LED_BLUE);
mja054 0:d62b58e30f71 120
mja054 0:d62b58e30f71 121
mja054 0:d62b58e30f71 122 void tapTrue(void){//ISR
mja054 0:d62b58e30f71 123 if(togstat == 0){
mja054 0:d62b58e30f71 124 togstat = 1;
mja054 0:d62b58e30f71 125 bled=ON;
mja054 0:d62b58e30f71 126 } else {
mja054 0:d62b58e30f71 127 togstat = 0;
mja054 0:d62b58e30f71 128 bled=OFF;
mja054 0:d62b58e30f71 129 }
mja054 0:d62b58e30f71 130
mja054 0:d62b58e30f71 131 }
mja054 0:d62b58e30f71 132
mja054 0:d62b58e30f71 133
mja054 0:d62b58e30f71 134 int main(void) {
mja054 0:d62b58e30f71 135
mja054 0:d62b58e30f71 136 MMA8451Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS);//accelorometer instance
mja054 0:d62b58e30f71 137
mja054 0:d62b58e30f71 138 acc.setDoubleTap();//Setup the MMA8451Q to look for a double Tap
mja054 0:d62b58e30f71 139 accInt1.rise(&tapTrue);//call tapTrue when an interrupt is generated on PTA14
mja054 0:d62b58e30f71 140
mja054 0:d62b58e30f71 141 while (true) {
mja054 0:d62b58e30f71 142 //Interrupt driven so nothing in main loop
mja054 0:d62b58e30f71 143 }
mja054 0:d62b58e30f71 144 }
mja054 0:d62b58e30f71 145
mja054 0:d62b58e30f71 146
mja054 0:d62b58e30f71 147 */
mja054 0:d62b58e30f71 148 void setDoubleTap(void);
mja054 0:d62b58e30f71 149
mja054 0:d62b58e30f71 150 private:
mja054 0:d62b58e30f71 151 I2C m_i2c;
mja054 0:d62b58e30f71 152 int m_addr;
mja054 0:d62b58e30f71 153 void readRegs(int addr, uint8_t * data, int len);
mja054 0:d62b58e30f71 154 void writeRegs(uint8_t * data, int len);
mja054 0:d62b58e30f71 155 int16_t getAccAxis(uint8_t addr);
mja054 0:d62b58e30f71 156
mja054 0:d62b58e30f71 157 };
mja054 0:d62b58e30f71 158
mja054 0:d62b58e30f71 159 #endif