accelerometer library
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Diff: MMA8452Q.h
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- 0:b3305e3c9e73
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/MMA8452Q.h Thu Oct 19 12:53:02 2017 +0000 @@ -0,0 +1,68 @@ +// Library for our MMA8452Q 3-axis accelerometer +// Based on the MMA8452Q Arduino Library by Jim Lindblom (SparkFun Electronics) + +#ifndef MMA8452Q_H +#define MMA8452Q_H + +#include "mbed.h" + +// Register definitions +#define REG_STATUS 0x00 +#define OUT_X_MSB 0x01 +#define OUT_X_LSB 0x02 +#define OUT_Y_MSB 0x03 +#define OUT_Y_LSB 0x04 +#define OUT_Z_MSB 0x05 +#define OUT_Z_LSB 0x06 +#define REG_WHO_AM_I 0x0D +#define REG_XYZ_DATA_CFG 0x0E +#define REG_CTRL_REG1 0x2A + +// WHO_AM_I check +#define FACTORY_ID 0x2A + +// Scale definitions +#define SCALE_2G 2 +#define SCALE_4G 4 +#define SCALE_8G 8 + +// Data rates +#define ODR_800HZ 0 +#define ODR_400HZ 1 +#define ODR_200HZ 2 +#define ODR_100HZ 3 +#define ODR_50HZ 4 +#define ODR_12_5HZ 5 +#define ODR_6_25HZ 6 +#define ODR_1_56HZ 7 + +// Init values +#define DEFAULT_FSR SCALE_2G +#define DEFAULT_ODR ODR_800HZ + + +// Class declaration +class MMA8452Q +{ + public: + MMA8452Q(PinName sda, PinName scl, int addr); + ~MMA8452Q(); + bool init(); + uint8_t available(); + void setScale(uint8_t fsr); + void setODR(uint8_t odr); + void standby(); + void active(); + float readX(); + float readY(); + float readZ(); + uint8_t readRegister(uint8_t reg); + void writeRegister(uint8_t reg, uint8_t data); + + private: + I2C m_i2c; + int m_addr; + int scale; +}; + +#endif \ No newline at end of file