You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
100 lines
2.8 KiB
100 lines
2.8 KiB
/** @addtogroup gpio_defines
|
|
*
|
|
* @brief <b>Access functions for the SAM4 I/O Controller</b>
|
|
* @ingroup SAM4_defines
|
|
* LGPL License Terms @ref lgpl_license
|
|
* @author @htmlonly © @endhtmlonly 2016
|
|
* Maxim Sloyko <maxims@google.com>
|
|
*
|
|
*/
|
|
|
|
/*
|
|
* This file is part of the libopencm3 project.
|
|
*
|
|
* Copyright (C) 2012 Gareth McMullin <gareth@blacksphere.co.nz>
|
|
* Copyright (C) 2014 Felix Held <felix-libopencm3@felixheld.de>
|
|
*
|
|
* 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/sam/gpio.h>
|
|
|
|
/** @brief Atomic set output
|
|
*
|
|
* @param[in] gpioport uint32_t: GPIO Port base address
|
|
* @param[in] gpios uint32_t
|
|
*/
|
|
void gpio_set(uint32_t gpioport, uint32_t gpios)
|
|
{
|
|
GPIO_OVRS(gpioport) = gpios;
|
|
}
|
|
|
|
/** @brief Atomic clear output
|
|
*
|
|
* @param[in] gpioport uint32_t: GPIO Port base address
|
|
* @param[in] gpios uint32_t
|
|
*/
|
|
void gpio_clear(uint32_t gpioport, uint32_t gpios)
|
|
{
|
|
GPIO_OVRC(gpioport) = gpios;
|
|
}
|
|
|
|
/** @brief Atomic toggle output
|
|
*
|
|
* @param[in] gpioport uint32_t: GPIO Port base address
|
|
* @param[in] gpios uint32_t
|
|
*/
|
|
void gpio_toggle(uint32_t gpioport, uint32_t gpios)
|
|
{
|
|
GPIO_OVRT(gpioport) = gpios;
|
|
}
|
|
|
|
/** @brief Enable output pins.
|
|
*
|
|
* Onlyc the ones where bits are set to "1" are touched, everything else
|
|
* remains in the old state.
|
|
*
|
|
* @param[in] gpioport uint32_t: GPIO Port base address
|
|
* @param[in] gpios uint32_t
|
|
* @param[in] mode enum gpio_mode GPIO mode. IN, OUT or peripheral function.
|
|
*/
|
|
void gpio_enable(uint32_t gpioport, uint32_t gpios, enum gpio_mode mode)
|
|
{
|
|
if (mode < GPIO_MODE_IN) {
|
|
GPIO_GPERC(gpioport) = gpios;
|
|
uint8_t i = 0;
|
|
for (; i < 3; ++i, mode >>= 1) {
|
|
GPIO_PMR_SETVAL(gpioport, i, mode & 1) = gpios;
|
|
}
|
|
} else if (mode == GPIO_MODE_OUT) {
|
|
GPIO_GPERS(gpioport) = gpios;
|
|
GPIO_ODERS(gpioport) = gpios;
|
|
} else if (mode == GPIO_MODE_IN) {
|
|
GPIO_GPERS(gpioport) = gpios;
|
|
GPIO_ODERC(gpioport) = gpios;
|
|
}
|
|
}
|
|
|
|
/** @brief Disable output pins.
|
|
*
|
|
* Onlyc the ones where bits are set to "1" are touched, everything else
|
|
* remains in the old state.
|
|
*
|
|
* @param[in] gpioport uint32_t: GPIO Port base address
|
|
* @param[in] gpios uint32_t
|
|
*/
|
|
void gpio_disable(uint32_t gpioport, uint32_t gpios)
|
|
{
|
|
GPIO_GPERC(gpioport) = gpios;
|
|
}
|
|
|