ADXRS290.h

00001 
00002 #ifndef ADXRS290_H_
00003 #define ADXRS290_H_
00004 
00005 class ADXRS290
00006 {
00007 public: 
00008     #define  gyro_sens 0.005; // 200 [LSB/°/s]   
00009     #define  t_sens 0.1;      // 10 [LSB/°C]  
00010     // -------------------------- //
00011     // REGISTERS                  // 
00012     // -------------------------- //
00013     typedef enum {
00014         ADI_ID = 0x00,
00015         MEMS_ID = 0x01,
00016         DEV_ID = 0x02,
00017         REV_ID = 0x03,
00018         SN0 = 0x04,
00019         SN1 = 0x05,
00020         SN2 = 0x06,
00021         SN3 = 0x07,
00022         DATAX0 = 0x08,
00023         DATAX1 = 0x09,
00024         DATAY0 = 0x0A,
00025         DATAY1 = 0x0B,
00026         TEMP0 = 0x0C,
00027         TEMP1 = 0x0D,
00028         POWER_CTL = 0x10,
00029         FILTER = 0x11,
00030         DATA_READY = 0x12
00031     } ADXRS290_register_t;
00032     // -------------------------- //
00033     // REGISTERS - DEFAULT VALUES //
00034     // -------------------------- //
00035     // Modes - POWER_CTL  
00036     typedef enum {
00037         TEMP_ON = 0x00,
00038         TEMP_OFF = 0x01,
00039         STANDBY = 0x00,
00040         MEASUREMENT = 0x02
00041     } ADXL355_modes_t;    
00042     // High-Pass and Low-Pass Filter - FILTER 
00043     typedef enum {
00044         LPF480 = 0x00,
00045         LPF320 = 0x01,
00046         LPF160 = 0x02,
00047         LPF80 = 0x03,
00048         LPF56 = 0x04,
00049         LPF40 = 0x05,
00050         LPF28 = 0x06,
00051         LPF20 = 0x07,
00052         HPFOFF = 0x00,
00053         HPF001 = 0x10,
00054         HPF002 = 0x20,
00055         HPF004 = 0x30,
00056         HPF008 = 0x40,
00057         HPF017 = 0x50,
00058         HPF035 = 0x60,
00059         HPF070 = 0x70,
00060         HPF140 = 0x80,
00061         HPF280 = 0x90,
00062         HPF1130 = 0xA0
00063     } ADXRS290_filter_ctl_t;
00064     // External timing register - INT_MAP 
00065     typedef enum {
00066         OVR_EN = 0x04,
00067         FULL_EN = 0x02,
00068         RDY_EN = 0x01
00069     } ADXRS290_intmap_ctl_t;
00070     // External timing register - SYNC 
00071     typedef enum {
00072         ANAL_SYNC = 0x00,
00073         DIGI_SYNC = 0x01
00074     } ADXRS290_dataready_ctl_t;
00075     // -------------------------- //
00076     // OUTPUT DATA                //
00077     // -------------------------- //
00078     typedef struct  {
00079         float rt_x;
00080         float rt_y;
00081         float rt_z;
00082     } ADXRS290_rate_t;
00083     ADXRS290_rate_t rate_data; 
00084     // -------------------------- //
00085     // FUNCTIONS                  //  
00086     // -------------------------- //
00087     // SPI configuration & constructor 
00088     ADXRS290(PinName cs_pin , PinName MOSI , PinName MISO , PinName SCK );
00089     void frequency(int hz);
00090     // SPI configuration & constructor 
00091     void write_reg(ADXRS290_register_t reg, uint8_t data);
00092     uint8_t read_reg(ADXRS290_register_t reg);
00093     uint16_t read_reg_u16(ADXRS290_register_t reg);
00094     // ADXRS general register R/W methods 
00095     void set_power_ctl_reg(uint8_t data);
00096     void set_filter_ctl_reg(ADXRS290_filter_ctl_t hpf, ADXRS290_filter_ctl_t odr);
00097     void set_sync(ADXRS290_dataready_ctl_t data);
00098     // ADXRS X/Y/T scanning methods   
00099     uint16_t scanx();
00100     uint16_t scany();
00101     uint16_t scant();
00102     ADXRS290_rate_t scan();
00103 private:
00104     // SPI adxl355;                 ///< SPI instance of the ADXL
00105     Timeout conv_time;
00106     SPI adxrs290; DigitalOut cs;
00107     const static uint8_t _DEVICE_AD = 0x92;     // contect of DEVID_AD (only-read) register 
00108     const static uint8_t _DUMMY_BYTE = 0xAA;    // 10101010
00109     const static uint8_t _WRITE_REG_CMD = 0x00; // write register
00110     const static uint8_t _READ_REG_CMD = 0x80;  // read register
00111     const static uint8_t _SPI_MODE = 4;         // timing scheme
00112 };
00113  
00114 #endif