main.cpp

00001 /******************************************************************************
00002 * MIT License
00003 *
00004 * Copyright (c) 2017 Justin J. Jordan
00005 *
00006 * Permission is hereby granted, free of charge, to any person obtaining a copy
00007 * of this software and associated documentation files (the "Software"), to deal
00008 * in the Software without restriction, including without limitation the rights
00009 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
00010 * copies of the Software, and to permit persons to whom the Software is
00011 * furnished to do so, subject to the following conditions:
00012 
00013 * The above copyright notice and this permission notice shall be included in all
00014 * copies or substantial portions of the Software.
00015 
00016 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
00017 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
00018 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
00019 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
00020 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
00021 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
00022 * SOFTWARE.
00023 ******************************************************************************/
00024 
00025 
00026 #include "mbed.h"
00027 #include "max32630fthr.h"
00028 
00029 
00030 int main ()
00031 {
00032     //Init board and set GPIO to 3.3V logic
00033     MAX32630FTHR pegasus(MAX32630FTHR::VIO_3V3);
00034     
00035     //Turn RGB LED off
00036     DigitalOut rLED(LED1, LED_OFF);
00037     DigitalOut gLED(LED2, LED_OFF);
00038     DigitalOut bLED(LED3, LED_OFF);
00039     
00040     AnalogIn a0(AIN_0);
00041     float a0_val;
00042     
00043     while(1)
00044     {
00045         //ADC is configured for no input scaling, no input buffer bypass,
00046         //and internal ref of 1.2V
00047         //Default range is 0 to 1.2V.  
00048         //See target 'analogin_api.c' for mbed-2.0 and mbed-os. 
00049         //Target User's guide page 567 covers ADC 
00050         //https://www.maximintegrated.com/en/app-notes/index.mvp/id/6349
00051         a0_val = (a0.read() * 1.2F);
00052         
00053         printf("AIN_0 = %f volts\r\n", a0_val);
00054         
00055         wait(0.25);
00056         gLED = !gLED;
00057     }
00058 }