Hello world program for I2C Accelerometer

Dependencies:   MMA8491 mbed

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main.cpp

00001 /*
00002  * Copyright (c) 2015 - 2016, Freescale Semiconductor, Inc.
00003  * Copyright 2016-2017 NXP
00004  *
00005  * Redistribution and use in source and binary forms, with or without modification,
00006  * are permitted provided that the following conditions are met:
00007  *
00008  * o Redistributions of source code must retain the above copyright notice, this list
00009  *   of conditions and the following disclaimer.
00010  *
00011  * o Redistributions in binary form must reproduce the above copyright notice, this
00012  *   list of conditions and the following disclaimer in the documentation and/or
00013  *   other materials provided with the distribution.
00014  *
00015  * o Neither the name of the copyright holder nor the names of its
00016  *   contributors may be used to endorse or promote products derived from this
00017  *   software without specific prior written permission.
00018  *
00019  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
00020  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
00021  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
00022  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR
00023  * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
00024  * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
00025  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
00026  * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
00027  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
00028  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
00029  */
00030 #include "MMA8491.h"
00031 #include "mbed.h"
00032 
00033 // Initialize Serial port
00034 Serial pc(USBTX, USBRX);
00035 
00036 // Initialize pins for I2C communication for sensors. Set jumpers J6,J7 in FRDM-STBC-AGM01 board accordingly.
00037 MMA8491 accel(D14,D15,PTB1);
00038 
00039 
00040 
00041     
00042 int main()
00043 {
00044    
00045    
00046     float accel_data[3]; float accel_rms=0.0;
00047          
00048     printf("Begin Data Acquisition....\r\n\r\n");
00049     wait(0.5);
00050     
00051     while(1)
00052     {
00053       accel.acquire_MMA8491_data_g(accel_data);
00054       accel_rms = sqrt(((accel_data[0]*accel_data[0])+(accel_data[1]*accel_data[1])+(accel_data[2]*accel_data[2]))/3);
00055       printf("%4.2f,%4.2f,%4.2f,\t",accel_data[0],accel_data[1],accel_data[2]);
00056       wait(0.005);
00057       
00058       printf("\n\r");
00059              
00060    
00061       
00062      }
00063       
00064 }