stm32f4-nucleo-test/libopencm3/lib/stm32/f1/timer.c

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/** @defgroup timer_file TIMER peripheral API
@ingroup peripheral_apis
@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));
}
}
/**@}*/