/**
 * \file
 *
 * \brief Clock system example 2.
 *
 * Copyright (c) 2011 Atmel Corporation. All rights reserved.
 *
 * \asf_license_start
 *
 * 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 microcontroller 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.
 *
 * \asf_license_stop
 *
 */

/**
 * \mainpage 
 *
 * \section intro Introduction
 * This example shows how to initialize the clock system and output the
 * CPU clock on pin PCK0 (please refer to datasheet for PIN number).
 *
 * \section files Main files:
 * - clock_example2_sam.c: clock system example application
 * - conf_board.h: board initialization configuration
 * - conf_clock.h: system clock configuration
 * - conf_example2.h: chip- or board-specific example configuration
 *
 * \section deviceinfo Device Info
 * All SAM devices can be used.
 *
 * \section exampledescription Description of the example
 * This example makes use of the output GPIO function for a generic clock to
 * output the CPU clock on pin PCK0 (please refer to datasheet for PIN number).
 *
 * The generic clock and its corresponding GPIO pin and function are defined in
 * conf_example2.h.
 * The main system clock source and prescalers, along with any PLL
 * and/or DFLL configuration, if supported, are defined in conf_clock.h.
 *
 * \section compinfo Compilation Info
 * This software was written for the GNU GCC and IAR for SAM.
 * Other compilers may or may not work.
 *
 * \section contactinfo Contact Information
 * For further information, visit
 * <A href="http://www.atmel.com/">Atmel</A>.\n
 * Support and FAQ: http://support.atmel.no/ 
 *
 */

#include <board.h>
#include <gpio.h>
#include <genclk.h>
#include <sysclk.h>
#include "conf_board.h"
#include <conf_example2.h>

/// @cond 0
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extern "C" {
#endif
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/**
 * \brief Initialize the clock system and output the CPU clock on pin 
 * PCK0 (please refer to datasheet for PIN number).
 *
 * \return Unused (ANSI-C compatibility).
 */
int main(void)
{
	struct genclk_config gcfg;

	sysclk_init();
	board_init();

	/* Configure specific CLKOUT pin */
	gpio_configure_pin(GCLK_PIN, GCLK_PIN_FLAGS);

	/* Configure the output clock */
	genclk_config_defaults(&gcfg, GENCLK_PCK_0);	
	genclk_config_set_source(&gcfg, GCLK_SOURCE);
	genclk_config_set_divider(&gcfg, GCLK_DIV);
	genclk_enable(&gcfg, GENCLK_PCK_0);

	while (1) {
		/* Do nothing */
	}
}

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#endif
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