FXAS21002 library

Dependents:   FRDM-STBC-AGMP01_SensorStream Hexi_Gyro_Example A_Dragonfly_Freescale_Accel_Mag_Gyro_Sensor_AGM01 A_Dragonfly_BlueMix_QuickStart_NXP_Sensor ... more

FXAS21002.cpp

Committer:
AswinSivakumar
Date:
2017-04-25
Revision:
3:c9ebfc81e8b6
Parent:
1:b774372b3913

File content as of revision 3:c9ebfc81e8b6:

/*
 * Copyright (c) 2015 - 2016, Freescale Semiconductor, Inc.
 * Copyright 2016-2017 NXP
 *
 * Redistribution and use in source and binary forms, with or without modification,
 * are permitted provided that the following conditions are met:
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 *   of conditions and the following disclaimer.
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 *   other materials provided with the distribution.
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 *   contributors may be used to endorse or promote products derived from this
 *   software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
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 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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 */

#include "FXAS21002.h"
 #include "mbed.h"

FXAS21002::FXAS21002(PinName sda, PinName scl) : gyroi2c(sda,scl)
 {
       
 }
    
 void FXAS21002::gyro_config(void)
 {
   char d[2];
   d[0] = FXAS21002_CTRL_REG1;                       //Puts device in standby mode
   d[1] = 0x08;
   gyroi2c.write(FXAS21002_I2C_ADDRESS, d,2);   
          
   
   d[0] = FXAS21002_CTRL_REG0;                       //sets FS =+/- 2000 dps
   d[1] = 0x00;
   gyroi2c.write(FXAS21002_I2C_ADDRESS, d, 2);   
           
   
   d[0] = FXAS21002_CTRL_REG1;                       //Puts device in active mode
   d[1] = 0x0A;
   gyroi2c.write(FXAS21002_I2C_ADDRESS, d,2);   
      
 }
 
 void FXAS21002::acquire_gyro_data_dps(float * g_data)
 {
  
    char data_bytes[7];
   gyroi2c.write(FXAS21002_I2C_ADDRESS,FXAS21002_STATUS,1,true);  // Read the 6 data bytes - LSB and MSB for X, Y and Z Axes.
   gyroi2c.read(FXAS21002_I2C_ADDRESS,data_bytes,7);
   
   g_data[0] =  (float)((int16_t)((data_bytes[1]*256) + (data_bytes[2]))) * 0.0625;
   g_data[1] =  (float)((int16_t)((data_bytes[3]*256) + (data_bytes[4]))) * 0.0625;
   g_data[2] =  (float)((int16_t)((data_bytes[5]*256) + (data_bytes[6]))) * 0.0625;
   
 }