gpio_ex3_softwarePoll.c

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/* --COPYRIGHT--,BSD
 * Copyright (c) 2017, Texas Instruments Incorporated
 * All rights reserved.
 *
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 * *  Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
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 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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//******************************************************************************
//******************************************************************************
#include "driverlib.h"
#include "Board.h"
 
void main (void)
{
    //Stop watchdog timer
    WDT_A_hold(WDT_A_BASE);
 
    //Set LED1 to output direction
    GPIO_setAsOutputPin(
        GPIO_PORT_LED1,
        GPIO_PIN_LED1
        );
 
    //Set S1 to input direction with internal pull-up resistance
    GPIO_setAsInputPinWithPullUpResistor(
        GPIO_PORT_S1,
        GPIO_PIN_S1
        );
 
    PMM_unlockLPM5();
 
    while (1)
    {
        //Test S1
        if (GPIO_INPUT_PIN_HIGH == GPIO_getInputPinValue(
                    GPIO_PORT_S1,
                    GPIO_PIN_S1
                    ))
        {
            //if S1 set, set LED1
            GPIO_setOutputHighOnPin(
                    GPIO_PORT_LED1,
                    GPIO_PIN_LED1
                    );
        }
        else
        {
            //else reset
            GPIO_setOutputLowOnPin(
                    GPIO_PORT_LED1,
                    GPIO_PIN_LED1
                    );
        }
    }
}