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/**
 * @file
 *
 * @brief Main for USB application.
 *
 * - Compiler:           IAR EWAVR and GNU GCC for AVR
 * - Supported devices:  AT90USB1287, AT90USB1286, AT90USB647, AT90USB646
 *
 * @author               Atmel Corporation: http://www.atmel.com \n
 *                       Support and FAQ: http://support.atmel.no/
 *
 *
 *
 * @mainpage AT90USBxxx USB device HID generic demonstration
 *
 * @section intro License
 * Use of this program is subject to Atmel's End User License Agreement.
 *
 * @section install Description
 * This embedded application code illustrates how to implement a USB application
 * with the AT90USBxxx controller using the generic HID class implementation.
 *
 * A pc side applications allow to communicate with the embedded firmware.
 *
 * This sample application can be configured for both STK525 or AT90USBKey hardware, see #TARGET_BOARD
 * define value in config.h file.
 *
 * @section arch Architecture
 * As illustrated in the figure bellow, the application entry point is located is the main.c file.
 * The main function first performs the initialization of a scheduler module and then runs it in an infinite loop.
 * The scheduler is a simple infinite loop calling all its tasks defined in the conf_scheduler.h file.
 * No real time schedule is performed, when a task ends, the scheduler calls the next task defined in
 * the configuration file (conf_scheduler.h).
 *
 * The sample usb application is based on two different tasks:
 * - The usb_task  (usb_task.c associated source file), is the task performing the USB low level
 * enumeration process in device mode.
 * Once this task has detected that the usb connection is fully operationnal, it updates different status flags
 * that can be check within the high level application tasks.
 * - The hid task performs the high level device application operation.
 * Once the device is fully enumerated (DEVICE SETUP_SET_CONFIGURATION request received), the task
 * checks for received data on its OUT endpoint and transmit  data on its IN endpoint.
 *
 * \image html arch_full.gif
 *
 */

/* Copyright (c) 2009 Atmel Corporation. All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 * this list of conditions and the following disclaimer.
 *
 * 2. 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.
 *
 * 3. The name of Atmel may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 *
 * 4. This software may only be redistributed and used in connection with an Atmel
 * AVR product.
 *
 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE EXPRESSLY AND
 * SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT,
 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

//_____  I N C L U D E S _______________________________________________________

#include "config.h"
#include "modules/scheduler/scheduler.h"
#include "lib_mcu/wdt/wdt_drv.h"
#include "lib_mcu/power/power_drv.h"
#include "lib_mcu/util/start_boot.h"

//_____ M A C R O S ____________________________________________________________

//_____ D E F I N I T I O N S ______________________________________________

int main( void )
{
    start_boot_if_required();
    wdtdrv_disable();
    Clear_prescaler();
    scheduler();
    return 0;
}

/**
 * @name Procedure to speed up the startup code
 * This one increment the CPU clock before RAM initialisation
 */
///@{
// Locate low level init function before RAM init (init3 section)
// and remove std prologue/epilogue
char __low_level_init( void ) __attribute__ ((section (".init3"),naked));

#ifdef __cplusplus
extern "C"
{
#endif
char __low_level_init()
{
    Clear_prescaler();
    return 1;
}
#ifdef __cplusplus
}
#endif
///@}