Bo-Jhang Ho / Mbed 2 deprecated mbed_test_fastest_rate

fastest sampling rate

Dependencies:   mbed

MMA8451Q/MMA8451Q.h@0:459f1731fa6a, 2014-02-03 (annotated)

Committer:
TimeString
Date:
Mon Feb 03 02:45:03 2014 +0000
Revision:
0:459f1731fa6a
fastest sampling rate for all sensors

Who changed what in which revision?

UserRevisionLine numberNew contents of line
TimeString 0:459f1731fa6a 1 /* Copyright (c) 2010-2011 mbed.org, MIT License
TimeString 0:459f1731fa6a 2 *
TimeString 0:459f1731fa6a 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
TimeString 0:459f1731fa6a 4 * and associated documentation files (the "Software"), to deal in the Software without
TimeString 0:459f1731fa6a 5 * restriction, including without limitation the rights to use, copy, modify, merge, publish,
TimeString 0:459f1731fa6a 6 * distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the
TimeString 0:459f1731fa6a 7 * Software is furnished to do so, subject to the following conditions:
TimeString 0:459f1731fa6a 8 *
TimeString 0:459f1731fa6a 9 * The above copyright notice and this permission notice shall be included in all copies or
TimeString 0:459f1731fa6a 10 * substantial portions of the Software.
TimeString 0:459f1731fa6a 11 *
TimeString 0:459f1731fa6a 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
TimeString 0:459f1731fa6a 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
TimeString 0:459f1731fa6a 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
TimeString 0:459f1731fa6a 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
TimeString 0:459f1731fa6a 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
TimeString 0:459f1731fa6a 17 */
TimeString 0:459f1731fa6a 18
TimeString 0:459f1731fa6a 19 #ifndef MMA8451Q_H
TimeString 0:459f1731fa6a 20 #define MMA8451Q_H
TimeString 0:459f1731fa6a 21
TimeString 0:459f1731fa6a 22 #include "mbed.h"
TimeString 0:459f1731fa6a 23
TimeString 0:459f1731fa6a 24 /**
TimeString 0:459f1731fa6a 25 * MMA8451Q accelerometer example
TimeString 0:459f1731fa6a 26 *
TimeString 0:459f1731fa6a 27 * @code
TimeString 0:459f1731fa6a 28 * #include "mbed.h"
TimeString 0:459f1731fa6a 29 * #include "MMA8451Q.h"
TimeString 0:459f1731fa6a 30 *
TimeString 0:459f1731fa6a 31 * #define MMA8451_I2C_ADDRESS (0x1d<<1)
TimeString 0:459f1731fa6a 32 *
TimeString 0:459f1731fa6a 33 * int main(void) {
TimeString 0:459f1731fa6a 34 *
TimeString 0:459f1731fa6a 35 * MMA8451Q acc(P_E25, P_E24, MMA8451_I2C_ADDRESS);
TimeString 0:459f1731fa6a 36 * PwmOut rled(LED_RED);
TimeString 0:459f1731fa6a 37 * PwmOut gled(LED_GREEN);
TimeString 0:459f1731fa6a 38 * PwmOut bled(LED_BLUE);
TimeString 0:459f1731fa6a 39 *
TimeString 0:459f1731fa6a 40 * while (true) {
TimeString 0:459f1731fa6a 41 * rled = 1.0 - abs(acc.getAccX());
TimeString 0:459f1731fa6a 42 * gled = 1.0 - abs(acc.getAccY());
TimeString 0:459f1731fa6a 43 * bled = 1.0 - abs(acc.getAccZ());
TimeString 0:459f1731fa6a 44 * wait(0.1);
TimeString 0:459f1731fa6a 45 * }
TimeString 0:459f1731fa6a 46 * }
TimeString 0:459f1731fa6a 47 * @endcode
TimeString 0:459f1731fa6a 48 */
TimeString 0:459f1731fa6a 49 class MMA8451Q
TimeString 0:459f1731fa6a 50 {
TimeString 0:459f1731fa6a 51 public:
TimeString 0:459f1731fa6a 52 /**
TimeString 0:459f1731fa6a 53 * MMA8451Q constructor
TimeString 0:459f1731fa6a 54 *
TimeString 0:459f1731fa6a 55 * @param sda SDA pin
TimeString 0:459f1731fa6a 56 * @param sdl SCL pin
TimeString 0:459f1731fa6a 57 * @param addr addr of the I2C peripheral
TimeString 0:459f1731fa6a 58 */
TimeString 0:459f1731fa6a 59 MMA8451Q(PinName sda, PinName scl, int addr);
TimeString 0:459f1731fa6a 60
TimeString 0:459f1731fa6a 61 /**
TimeString 0:459f1731fa6a 62 * MMA8451Q destructor
TimeString 0:459f1731fa6a 63 */
TimeString 0:459f1731fa6a 64 ~MMA8451Q();
TimeString 0:459f1731fa6a 65
TimeString 0:459f1731fa6a 66 /**
TimeString 0:459f1731fa6a 67 * Get the value of the WHO_AM_I register
TimeString 0:459f1731fa6a 68 *
TimeString 0:459f1731fa6a 69 * @returns WHO_AM_I value
TimeString 0:459f1731fa6a 70 */
TimeString 0:459f1731fa6a 71 uint8_t getWhoAmI();
TimeString 0:459f1731fa6a 72
TimeString 0:459f1731fa6a 73 /**
TimeString 0:459f1731fa6a 74 * Get X axis acceleration
TimeString 0:459f1731fa6a 75 *
TimeString 0:459f1731fa6a 76 * @returns X axis acceleration
TimeString 0:459f1731fa6a 77 */
TimeString 0:459f1731fa6a 78 float getAccX();
TimeString 0:459f1731fa6a 79
TimeString 0:459f1731fa6a 80 /**
TimeString 0:459f1731fa6a 81 * Get Y axis acceleration
TimeString 0:459f1731fa6a 82 *
TimeString 0:459f1731fa6a 83 * @returns Y axis acceleration
TimeString 0:459f1731fa6a 84 */
TimeString 0:459f1731fa6a 85 float getAccY();
TimeString 0:459f1731fa6a 86
TimeString 0:459f1731fa6a 87 /**
TimeString 0:459f1731fa6a 88 * Get Z axis acceleration
TimeString 0:459f1731fa6a 89 *
TimeString 0:459f1731fa6a 90 * @returns Z axis acceleration
TimeString 0:459f1731fa6a 91 */
TimeString 0:459f1731fa6a 92 float getAccZ();
TimeString 0:459f1731fa6a 93
TimeString 0:459f1731fa6a 94 /**
TimeString 0:459f1731fa6a 95 * Get XYZ axis acceleration
TimeString 0:459f1731fa6a 96 *
TimeString 0:459f1731fa6a 97 * @param res array where acceleration data will be stored
TimeString 0:459f1731fa6a 98 */
TimeString 0:459f1731fa6a 99 void getAccAllAxis(float * res);
TimeString 0:459f1731fa6a 100
TimeString 0:459f1731fa6a 101 /** JK
TimeString 0:459f1731fa6a 102 * Setup Double Tap detection
TimeString 0:459f1731fa6a 103
TimeString 0:459f1731fa6a 104
TimeString 0:459f1731fa6a 105 Example:
TimeString 0:459f1731fa6a 106
TimeString 0:459f1731fa6a 107 #include "mbed.h"
TimeString 0:459f1731fa6a 108 #include "MMA8451Q.h"
TimeString 0:459f1731fa6a 109
TimeString 0:459f1731fa6a 110 #define MMA8451_I2C_ADDRESS (0x1d<<1)
TimeString 0:459f1731fa6a 111 #define ON 0
TimeString 0:459f1731fa6a 112 #define OFF !ON
TimeString 0:459f1731fa6a 113
TimeString 0:459f1731fa6a 114 //Setup the interrupts for the MMA8451Q
TimeString 0:459f1731fa6a 115 InterruptIn accInt1(PTA14);
TimeString 0:459f1731fa6a 116 InterruptIn accInt2(PTA15);//not used in this prog but this is the other int from the accelorometer
TimeString 0:459f1731fa6a 117
TimeString 0:459f1731fa6a 118 uint8_t togstat=0;//Led status
TimeString 0:459f1731fa6a 119 DigitalOut bled(LED_BLUE);
TimeString 0:459f1731fa6a 120
TimeString 0:459f1731fa6a 121
TimeString 0:459f1731fa6a 122 void tapTrue(void){//ISR
TimeString 0:459f1731fa6a 123 if(togstat == 0){
TimeString 0:459f1731fa6a 124 togstat = 1;
TimeString 0:459f1731fa6a 125 bled=ON;
TimeString 0:459f1731fa6a 126 } else {
TimeString 0:459f1731fa6a 127 togstat = 0;
TimeString 0:459f1731fa6a 128 bled=OFF;
TimeString 0:459f1731fa6a 129 }
TimeString 0:459f1731fa6a 130
TimeString 0:459f1731fa6a 131 }
TimeString 0:459f1731fa6a 132
TimeString 0:459f1731fa6a 133
TimeString 0:459f1731fa6a 134 int main(void) {
TimeString 0:459f1731fa6a 135
TimeString 0:459f1731fa6a 136 MMA8451Q acc(PTE25, PTE24, MMA8451_I2C_ADDRESS);//accelorometer instance
TimeString 0:459f1731fa6a 137
TimeString 0:459f1731fa6a 138 acc.setDoubleTap();//Setup the MMA8451Q to look for a double Tap
TimeString 0:459f1731fa6a 139 accInt1.rise(&tapTrue);//call tapTrue when an interrupt is generated on PTA14
TimeString 0:459f1731fa6a 140
TimeString 0:459f1731fa6a 141 while (true) {
TimeString 0:459f1731fa6a 142 //Interrupt driven so nothing in main loop
TimeString 0:459f1731fa6a 143 }
TimeString 0:459f1731fa6a 144 }
TimeString 0:459f1731fa6a 145
TimeString 0:459f1731fa6a 146
TimeString 0:459f1731fa6a 147 */
TimeString 0:459f1731fa6a 148 void setDoubleTap(void);
TimeString 0:459f1731fa6a 149
TimeString 0:459f1731fa6a 150 private:
TimeString 0:459f1731fa6a 151 I2C m_i2c;
TimeString 0:459f1731fa6a 152 int m_addr;
TimeString 0:459f1731fa6a 153 void readRegs(int addr, uint8_t * data, int len);
TimeString 0:459f1731fa6a 154 void writeRegs(uint8_t * data, int len);
TimeString 0:459f1731fa6a 155 int16_t getAccAxis(uint8_t addr);
TimeString 0:459f1731fa6a 156
TimeString 0:459f1731fa6a 157 };
TimeString 0:459f1731fa6a 158
TimeString 0:459f1731fa6a 159 #endif