my own one

Fork of FXAS21002 by Weiqian Xu

FXAS21002.cpp

Committer:
AswinSivakumar
Date:
2017-04-24
Revision:
2:504e7f1bbf11
Parent:
1:b774372b3913

File content as of revision 2:504e7f1bbf11:

/*
 * 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:
 *
 * o Redistributions of source code must retain the above copyright notice, this list
 *   of conditions and the following disclaimer.
 *
 * o Redistributions in binary form must reproduce the above copyright notice, this
 *   list of conditions and the following disclaimer in the documentation and/or
 *   other materials provided with the distribution.
 *
 * o Neither the name of the copyright holder nor the names of its
 *   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
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#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;
   
 }