ldopwr_ex1_internalLDOPower.c

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/* --COPYRIGHT--,BSD
 * Copyright (c) 2017, Texas Instruments Incorporated
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *
 * *  Redistributions of source code must retain the above copyright
 *    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
 *    documentation and/or other materials provided with the distribution.
 *
 * *  Neither the name of Texas Instruments Incorporated 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 OWNER OR
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 * --/COPYRIGHT--*/
//******************************************************************************
//******************************************************************************
 
#include "driverlib.h"
 
void main (void)
{
    volatile uint16_t i;
 
    //Stop WDT
    WDT_A_hold(WDT_A_BASE);
 
    //Enable access to config registers
    LDOPWR_unLockConfiguration(LDOPWR_BASE);
 
    //Configure PU.0 as output pins
    LDOPWR_enablePort_U_outputs(LDOPWR_BASE);
 
    //Set PU.1 = high
    LDOPWR_setPort_U1_outputData(LDOPWR_BASE,
        LDOPWR_PORTU_PIN_HIGH
        );
 
    //Set PU.0 = low
    LDOPWR_setPort_U0_outputData(LDOPWR_BASE,
        LDOPWR_PORTU_PIN_LOW
        );
 
    //Enable LDO overload indication interrupt
    LDOPWR_clearInterrupt(LDOPWR_BASE,
        LDOPWR_LDO_OVERLOAD_INDICATION_INTERRUPT
        );
    LDOPWR_enableInterrupt(LDOPWR_BASE,
        LDOPWR_LDO_OVERLOAD_INDICATION_INTERRUPT
        );
 
    //Disbale access to config registers
    LDOPWR_lockConfiguration(LDOPWR_BASE);
 
    //continuous loop
    while (1)
    {
        //Delay
        for (i = 50000; i > 0; i--){}
 
        //Enable access to config registers
        LDOPWR_unLockConfiguration(LDOPWR_BASE);
 
        //XOR PU.0/1
        LDOPWR_togglePort_U1_outputData(LDOPWR_BASE);
        LDOPWR_togglePort_U0_outputData(LDOPWR_BASE);
 
        //Disbale access to config registers
        LDOPWR_lockConfiguration(LDOPWR_BASE);
    }
}
 
//******************************************************************************
//
//This is the LDO_PWR_VECTOR interrupt vector service routine.
//
//******************************************************************************
#if defined(__TI_COMPILER_VERSION__) || defined(__IAR_SYSTEMS_ICC__)
#pragma vector=LDO_PWR_VECTOR
__interrupt
#elif defined(__GNUC__)
__attribute__((interrupt(LDO_PWR_VECTOR)))
#endif
void LDOInterruptHandler (void)
{
    if (LDOPWR_getInterruptStatus(LDOPWR_BASE,
            LDOPWR_LDO_OVERLOAD_INDICATION_INTERRUPT
            )){
        //Enable access to config registers
        LDOPWR_unLockConfiguration(LDOPWR_BASE);
 
        //Software clear IFG
        LDOPWR_clearInterrupt(LDOPWR_BASE,
            LDOPWR_LDO_OVERLOAD_INDICATION_INTERRUPT
            );
 
        //Disable access to config registers
        LDOPWR_lockConfiguration(LDOPWR_BASE);
 
        //Over load indication; take necessary steps in application firmware
        while (1) ;
    }
}