//*****************************************************************************
//
// project0.c - Example to demonstrate minimal StellarisWare setup
//
// Copyright (c) 2012 Texas Instruments Incorporated.  All rights reserved.
// Software License Agreement
// 
// Texas Instruments (TI) is supplying this software for use solely and
// exclusively on TI's microcontroller products. The software is owned by
// TI and/or its suppliers, and is protected under applicable copyright
// laws. You may not combine this software with "viral" open-source
// software in order to form a larger program.
// 
// THIS SOFTWARE IS PROVIDED "AS IS" AND WITH ALL FAULTS.
// NO WARRANTIES, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING, BUT
// NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE APPLY TO THIS SOFTWARE. TI SHALL NOT, UNDER ANY
// CIRCUMSTANCES, BE LIABLE FOR SPECIAL, INCIDENTAL, OR CONSEQUENTIAL
// DAMAGES, FOR ANY REASON WHATSOEVER.
// 
// This is part of revision 9453 of the EK-LM4F120XL Firmware Package.
//
//*****************************************************************************

#include "inc/hw_types.h"
#include "inc/hw_memmap.h"
#include "driverlib/sysctl.h"
#include "driverlib/gpio.h"

//*****************************************************************************
//
// Define pin to LED color mapping.
//
//*****************************************************************************

#define RED_LED   GPIO_PIN_1
#define BLUE_LED  GPIO_PIN_2
#define GREEN_LED GPIO_PIN_3

//*****************************************************************************
//
//! \addtogroup example_list
//! <h1>Project Zero (project0)</h1>
//!
//! This example demonstrates the use of StellarisWare to setup the clocks
//! and toggle GPIO pins to make the LED's blink. This is a good place to 
//! start understanding your launchpad and the tools that can be used to 
//! program it. See http://www.ti.com/stellaris-launchpad/project0 for more 
//! information and tutorial videos.
//!
//
//*****************************************************************************


//*****************************************************************************
//
// Main 'C' Language entry point.  Toggle an LED using StellarisWare.
// See www.ti.com/stellaris-launchpad/project0 for more information and 
// tutorial videos.
//
//*****************************************************************************
int
main(void)
{
    //
    // Setup the system clock to run at 50 Mhz from PLL with crystal reference
    //
    SysCtlClockSet(SYSCTL_SYSDIV_4|SYSCTL_USE_PLL|SYSCTL_XTAL_16MHZ|
                    SYSCTL_OSC_MAIN);

    //
    // Enable and configure the GPIO port for the LED operation.
    //
    SysCtlPeripheralEnable(SYSCTL_PERIPH_GPIOF);
    GPIOPinTypeGPIOOutput(GPIO_PORTF_BASE, RED_LED|BLUE_LED|GREEN_LED);

    //
    // Loop Forever
    //
    while(1)
    {
        //
        // Turn on the LED
        //
        GPIOPinWrite(GPIO_PORTF_BASE, RED_LED|BLUE_LED|GREEN_LED, RED_LED);

        //
        // Delay for a bit
        //
        SysCtlDelay(2000000);

        //
        // Turn on the LED
        //
        GPIOPinWrite(GPIO_PORTF_BASE, RED_LED|BLUE_LED|GREEN_LED, BLUE_LED);

        //
        // Delay for a bit
        //
        SysCtlDelay(2000000);
    }
}