gpio_ex3_softwarePoll.c

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/* --COPYRIGHT--,BSD
 * Copyright (c) 2017, Texas Instruments Incorporated
 * All rights reserved.
 *
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 *    notice, this list of conditions and the following disclaimer.
 *
 * *  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"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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//******************************************************************************
//******************************************************************************
#include "driverlib.h"
 
void main (void)
{
    //Stop watchdog timer
    WDT_A_hold(WDT_A_BASE);
 
    //Set P1.0 to output direction
    GPIO_setAsOutputPin(
        GPIO_PORT_P1,
        GPIO_PIN0
        );
 
    //Set P1.4 to input direction
    GPIO_setAsInputPin(
        GPIO_PORT_P1,
        GPIO_PIN4
        );
 
    while (1)
    {
        //Test P1.4
        if (GPIO_INPUT_PIN_HIGH == GPIO_getInputPinValue(
                GPIO_PORT_P1,
                GPIO_PIN4
                )){
            //if P1.4 set, set P1.0
            GPIO_setOutputHighOnPin(
                GPIO_PORT_P1,
                GPIO_PIN0
                );
        } else   {
            //else reset
            GPIO_setOutputLowOnPin(
                GPIO_PORT_P1,
                GPIO_PIN0
                );
        }
    }
}