/* This file is used for documentation purposes. It does not need
to be compiled. All source code is in the common area.
If there is any device specific code required it can be included here,
in which case this file must be added to the compile list. */

/** @defgroup timer_file Timers

@ingroup STM32F1xx

@brief <b>libopencm3 STM32F1xx Timers</b>

@version 1.0.0

@date 18 August 2012

*/

/*
 * This file is part of the libopencm3 project.
 *
 * Copyright (C) 2010 Edward Cheeseman <evbuilder@users.sourceforge.org>
 * Copyright (C) 2011 Stephen Caudle <scaudle@doceme.com>
 *
 * This library is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public License
 * along with this library.  If not, see <http://www.gnu.org/licenses/>.
 */

#include <libopencm3/stm32/timer.h>

/*---------------------------------------------------------------------------*/
/** @brief Set Input Polarity

@param[in] timer_peripheral Unsigned int32. Timer register address base
@param[in] ic ::tim_ic_id. Input Capture channel designator.
@param[in] pol ::tim_ic_pol. Input Capture polarity.
*/

void timer_ic_set_polarity(uint32_t timer_peripheral, enum tim_ic_id ic,
			   enum tim_ic_pol pol)
{
	if (pol) {
		TIM_CCER(timer_peripheral) |= (0x2 << (ic * 4));
	} else {
		TIM_CCER(timer_peripheral) &= ~(0x2 << (ic * 4));
	}
}