clemente di caprio / MPL3115A2

Llibrary for the WiGo MPL3115A2, I2C Precision Altimeter sensor.

Dependents:   KL25Z_Batt_Test WIGO_MPL3115A2 Multi-Sensor SPACEmk2 ... more

30/05/2013 Added and tested the data acquisition using Interrupt. Added code for Altimeter trigger Interrupt but not yet tested.

Very basic library. Under development. Need to add in order: 1. IRQ configuration. 2. FIFO mode configuration.

MPL3115A2.h@2:a2fcfb7ff611, 2013-05-29 (annotated)

Committer:
clemente
Date:
Wed May 29 05:57:15 2013 +0000
Revision:
2:a2fcfb7ff611
Parent:
1:30a04f651efe
Child:
3:a2f1752add9a
Streaming data using Interrupt. Not tested.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
clemente 0:cfecfabc5e23 1 #ifndef MPL3115A2_H
clemente 0:cfecfabc5e23 2 #define MPL3115A2_H
clemente 0:cfecfabc5e23 3
clemente 0:cfecfabc5e23 4 #include "mbed.h"
clemente 0:cfecfabc5e23 5
clemente 0:cfecfabc5e23 6 /* Oversampling */
clemente 0:cfecfabc5e23 7 #define OVERSAMPLE_RATIO_1 0
clemente 0:cfecfabc5e23 8 #define OVERSAMPLE_RATIO_2 1
clemente 0:cfecfabc5e23 9 #define OVERSAMPLE_RATIO_4 2
clemente 0:cfecfabc5e23 10 #define OVERSAMPLE_RATIO_8 3
clemente 0:cfecfabc5e23 11 #define OVERSAMPLE_RATIO_16 4
clemente 0:cfecfabc5e23 12 #define OVERSAMPLE_RATIO_32 5
clemente 0:cfecfabc5e23 13 #define OVERSAMPLE_RATIO_64 6
clemente 0:cfecfabc5e23 14 #define OVERSAMPLE_RATIO_128 7
clemente 0:cfecfabc5e23 15
clemente 0:cfecfabc5e23 16 /* Mode */
clemente 0:cfecfabc5e23 17 #define ALTIMETER_MODE 1
clemente 0:cfecfabc5e23 18 #define BAROMETRIC_MODE 2
clemente 0:cfecfabc5e23 19
clemente 0:cfecfabc5e23 20 /**
clemente 0:cfecfabc5e23 21 * MPL3115A2 Altimeter example
clemente 0:cfecfabc5e23 22 *
clemente 0:cfecfabc5e23 23 * @code
clemente 0:cfecfabc5e23 24 * #include "mbed.h"
clemente 0:cfecfabc5e23 25 * #include "MPL3115A2.h"
clemente 0:cfecfabc5e23 26 *
clemente 0:cfecfabc5e23 27 * #define MPL3115A2_I2C_ADDRESS (0x60<<1)
clemente 1:30a04f651efe 28 * MPL3115A2 wigo_sensor1(PTE0, PTE1, MPL3115A2_I2C_ADDRESS);
clemente 0:cfecfabc5e23 29 * Serial pc(USBTX, USBRX);
clemente 0:cfecfabc5e23 30 *
clemente 1:30a04f651efe 31 * // pos [0] = altitude or pressure value
clemente 1:30a04f651efe 32 * // pos [1] = temperature value
clemente 1:30a04f651efe 33 * float sensor_data[2];
clemente 1:30a04f651efe 34 *
clemente 0:cfecfabc5e23 35 * int main(void) {
clemente 0:cfecfabc5e23 36 *
clemente 0:cfecfabc5e23 37 * pc.baud( 230400);
clemente 0:cfecfabc5e23 38 * pc.printf("MPL3115A2 Altimeter mode. [%d]\r\n", wigo_sensor1.getDeviceID());
clemente 0:cfecfabc5e23 39 *
clemente 0:cfecfabc5e23 40 * wigo_sensor1.Oversample_Ratio( OVERSAMPLE_RATIO_32);
clemente 0:cfecfabc5e23 41 *
clemente 0:cfecfabc5e23 42 * while(1) {
clemente 0:cfecfabc5e23 43 * //
clemente 0:cfecfabc5e23 44 * if ( wigo_sensor1.isDataAvailable()) {
clemente 0:cfecfabc5e23 45 * wigo_sensor1.getAllData( &sensor_data[0]);
clemente 1:30a04f651efe 46 * pc.printf("\tAltitude: %f\tTemperature: %f\r\n", sensor_data[0], sensor_data[1]);
clemente 0:cfecfabc5e23 47 * }
clemente 0:cfecfabc5e23 48 * //
clemente 0:cfecfabc5e23 49 * wait( 0.001);
clemente 0:cfecfabc5e23 50 * }
clemente 0:cfecfabc5e23 51 *
clemente 0:cfecfabc5e23 52 * }
clemente 0:cfecfabc5e23 53 * @endcode
clemente 0:cfecfabc5e23 54 */
clemente 0:cfecfabc5e23 55 class MPL3115A2
clemente 0:cfecfabc5e23 56 {
clemente 0:cfecfabc5e23 57 public:
clemente 2:a2fcfb7ff611 58 /**
clemente 2:a2fcfb7ff611 59 * MPL3115A2 constructor
clemente 2:a2fcfb7ff611 60 *
clemente 2:a2fcfb7ff611 61 * @param sda SDA pin
clemente 2:a2fcfb7ff611 62 * @param sdl SCL pin
clemente 2:a2fcfb7ff611 63 * @param addr addr of the I2C peripheral
clemente 2:a2fcfb7ff611 64 */
clemente 2:a2fcfb7ff611 65 MPL3115A2(PinName sda, PinName scl, int addr);
clemente 2:a2fcfb7ff611 66
clemente 2:a2fcfb7ff611 67 /**
clemente 2:a2fcfb7ff611 68 * Get the value of the WHO_AM_I register
clemente 2:a2fcfb7ff611 69 *
clemente 2:a2fcfb7ff611 70 * @returns DEVICE_ID value == 0xC4
clemente 2:a2fcfb7ff611 71 */
clemente 2:a2fcfb7ff611 72 uint8_t getDeviceID();
clemente 2:a2fcfb7ff611 73
clemente 2:a2fcfb7ff611 74 /**
clemente 2:a2fcfb7ff611 75 * Return the STATUS register value
clemente 2:a2fcfb7ff611 76 *
clemente 2:a2fcfb7ff611 77 * @returns STATUS register value
clemente 2:a2fcfb7ff611 78 */
clemente 2:a2fcfb7ff611 79 unsigned char getStatus( void);
clemente 2:a2fcfb7ff611 80
clemente 2:a2fcfb7ff611 81 /**
clemente 2:a2fcfb7ff611 82 * Get the altimeter value
clemente 2:a2fcfb7ff611 83 *
clemente 2:a2fcfb7ff611 84 * @returns altimeter value as float
clemente 2:a2fcfb7ff611 85 */
clemente 2:a2fcfb7ff611 86 float getAltimeter( void);
clemente 2:a2fcfb7ff611 87
clemente 2:a2fcfb7ff611 88 /**
clemente 2:a2fcfb7ff611 89 * Get the pressure value
clemente 2:a2fcfb7ff611 90 *
clemente 2:a2fcfb7ff611 91 * @returns pressure value as float
clemente 2:a2fcfb7ff611 92 */
clemente 2:a2fcfb7ff611 93 float getPressure( void);
clemente 2:a2fcfb7ff611 94
clemente 2:a2fcfb7ff611 95 /**
clemente 2:a2fcfb7ff611 96 * Get the temperature value
clemente 2:a2fcfb7ff611 97 *
clemente 2:a2fcfb7ff611 98 * @returns temperature value as float
clemente 2:a2fcfb7ff611 99 */
clemente 2:a2fcfb7ff611 100 float getTemperature( void);
clemente 2:a2fcfb7ff611 101
clemente 2:a2fcfb7ff611 102 /**
clemente 2:a2fcfb7ff611 103 * Set the Altimeter Mode
clemente 2:a2fcfb7ff611 104 *
clemente 2:a2fcfb7ff611 105 * @returns none
clemente 2:a2fcfb7ff611 106 */
clemente 2:a2fcfb7ff611 107 void Altimeter_Mode( void);
clemente 2:a2fcfb7ff611 108
clemente 2:a2fcfb7ff611 109 /**
clemente 2:a2fcfb7ff611 110 * Set the Barometric Mode
clemente 2:a2fcfb7ff611 111 *
clemente 2:a2fcfb7ff611 112 * @returns none
clemente 2:a2fcfb7ff611 113 */
clemente 2:a2fcfb7ff611 114 void Barometric_Mode( void);
clemente 2:a2fcfb7ff611 115
clemente 2:a2fcfb7ff611 116 /**
clemente 2:a2fcfb7ff611 117 * Get the altimeter, pressure and temperature values
clemente 2:a2fcfb7ff611 118 *
clemente 2:a2fcfb7ff611 119 * @param array of float f[3]
clemente 2:a2fcfb7ff611 120 * @returns none
clemente 2:a2fcfb7ff611 121 */
clemente 2:a2fcfb7ff611 122 void getAllData( float *f);
clemente 2:a2fcfb7ff611 123
clemente 2:a2fcfb7ff611 124 /**
clemente 2:a2fcfb7ff611 125 * Return if there are date available
clemente 2:a2fcfb7ff611 126 *
clemente 2:a2fcfb7ff611 127 * @return 1 for data available, 0 for no data available
clemente 2:a2fcfb7ff611 128 */
clemente 2:a2fcfb7ff611 129 unsigned int isDataAvailable( void);
clemente 2:a2fcfb7ff611 130
clemente 2:a2fcfb7ff611 131 /**
clemente 2:a2fcfb7ff611 132 * Set the oversampling rate value
clemente 2:a2fcfb7ff611 133 *
clemente 2:a2fcfb7ff611 134 * @param oversampling values. See MPL3115A2.h
clemente 2:a2fcfb7ff611 135 * @return none
clemente 2:a2fcfb7ff611 136 */
clemente 2:a2fcfb7ff611 137 void Oversample_Ratio( unsigned int ratio);
clemente 0:cfecfabc5e23 138
clemente 2:a2fcfb7ff611 139 /**
clemente 2:a2fcfb7ff611 140 * Configure the sensor to streaming data using Interrupt
clemente 2:a2fcfb7ff611 141 *
clemente 2:a2fcfb7ff611 142 * @param user functin callback, oversampling values. See MPL3115A2.h
clemente 2:a2fcfb7ff611 143 * @return none
clemente 2:a2fcfb7ff611 144 */
clemente 2:a2fcfb7ff611 145 void DataReady( void(*fptr)(void), unsigned char OS);
clemente 2:a2fcfb7ff611 146
clemente 2:a2fcfb7ff611 147 /**
clemente 2:a2fcfb7ff611 148 * Soft Reset
clemente 2:a2fcfb7ff611 149 *
clemente 2:a2fcfb7ff611 150 * @param none
clemente 2:a2fcfb7ff611 151 * @return none
clemente 2:a2fcfb7ff611 152 */
clemente 2:a2fcfb7ff611 153 void Reset( void);
clemente 0:cfecfabc5e23 154
clemente 0:cfecfabc5e23 155 private:
clemente 2:a2fcfb7ff611 156 I2C m_i2c;
clemente 2:a2fcfb7ff611 157 int m_addr;
clemente 2:a2fcfb7ff611 158 unsigned char MPL3115A2_mode;
clemente 2:a2fcfb7ff611 159 unsigned char MPL3115A2_oversampling;
clemente 2:a2fcfb7ff611 160 void DataReady_IRQ( void);
clemente 2:a2fcfb7ff611 161
clemente 2:a2fcfb7ff611 162 /** Set the device in active mode
clemente 2:a2fcfb7ff611 163 */
clemente 2:a2fcfb7ff611 164 void Active( void);
clemente 2:a2fcfb7ff611 165
clemente 2:a2fcfb7ff611 166 /** Set the device in standby mode
clemente 2:a2fcfb7ff611 167 */
clemente 2:a2fcfb7ff611 168 void Standby( void);
clemente 2:a2fcfb7ff611 169
clemente 2:a2fcfb7ff611 170 void readRegs(int addr, uint8_t * data, int len);
clemente 2:a2fcfb7ff611 171 void writeRegs(uint8_t * data, int len);
clemente 0:cfecfabc5e23 172
clemente 0:cfecfabc5e23 173 };
clemente 0:cfecfabc5e23 174
clemente 0:cfecfabc5e23 175 #endif