/** * \file * * \brief Port related functionality declaration. * * Copyright (C) 2014-2016 Atmel Corporation. All rights reserved. * * \asf_license_start * * \page License * * 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 * */ #ifndef _HPL_GPIO_H_INCLUDED #define _HPL_GPIO_H_INCLUDED /** * \addtogroup HPL Port * * \section hpl_port_rev Revision History * - v1.0.0 Initial Release * *@{ */ #include #ifdef __cplusplus extern "C" { #endif /** * \brief Macros for the pin and port group, lower 5 * bits stands for pin number in the group, higher 3 * bits stands for port group */ #define GPIO_PIN(n) (((n)&0x1Fu) << 0) #define GPIO_PORT(n) ((n) >> 5) #define GPIO(port, pin) ((((port)&0x7u) << 5) + ((pin)&0x1Fu)) #define GPIO_PIN_FUNCTION_OFF 0xffffffff /** * \brief PORT pull mode settings */ enum gpio_pull_mode { GPIO_PULL_OFF, GPIO_PULL_UP, GPIO_PULL_DOWN }; /** * \brief PORT direction settins */ enum gpio_direction { GPIO_DIRECTION_OFF, GPIO_DIRECTION_IN, GPIO_DIRECTION_OUT }; /** * \brief PORT group abstraction */ enum gpio_port { GPIO_PORTA, GPIO_PORTB, GPIO_PORTC, GPIO_PORTD, GPIO_PORTE }; /** * \name HPL functions */ //@{ /** * \brief Port initialization function * * Port initialization function should setup the port module based * on a static configuration file, this function should normally * not be called directly, but is a part of hal_init() */ void _gpio_init(void); /** * \brief Set direction on port with mask * * Set data direction for each pin, or disable the pin * * \param[in] port Ports are grouped into groups of maximum 32 pins, * GPIO_PORTA = group 0, GPIO_PORTB = group 1, etc * \param[in] mask Bit mask where 1 means apply direction setting to the * corresponding pin * \param[in] direction GPIO_DIRECTION_OFF = set pin direction to input * and disable input buffer to disable the pin * GPIO_DIRECTION_IN = set pin direction to input * and enable input buffer to enable the pin * GPIO_DIRECTION_OUT = set pin direction to output * and disable input buffer */ static inline void _gpio_set_direction(const enum gpio_port port, const uint32_t mask, const enum gpio_direction direction); /** * \brief Set output level on port with mask * * Sets output state on pin to high or low with pin masking * * \param[in] port Ports are grouped into groups of maximum 32 pins, * GPIO_PORTA = group 0, GPIO_PORTB = group 1, etc * \param[in] mask Bit mask where 1 means apply direction setting to * the corresponding pin * \param[in] level true = pin level is set to 1 * false = pin level is set to 0 */ static inline void _gpio_set_level(const enum gpio_port port, const uint32_t mask, const bool level); /** * \brief Change output level to the opposite with mask * * Change pin output level to the opposite with pin masking * * \param[in] port Ports are grouped into groups of maximum 32 pins, * GPIO_PORTA = group 0, GPIO_PORTB = group 1, etc * \param[in] mask Bit mask where 1 means apply direction setting to * the corresponding pin */ static inline void _gpio_toggle_level(const enum gpio_port port, const uint32_t mask); /** * \brief Get input levels on all port pins * * Get input level on all port pins, will read IN register if configured to * input and OUT register if configured as output * * \param[in] port Ports are grouped into groups of maximum 32 pins, * GPIO_PORTA = group 0, GPIO_PORTB = group 1, etc */ static inline uint32_t _gpio_get_level(const enum gpio_port port); /** * \brief Set pin pull mode * * Set pull mode on a single pin * * \notice This function will automatically change pin direction to input * * \param[in] port Ports are grouped into groups of maximum 32 pins, * GPIO_PORTA = group 0, GPIO_PORTB = group 1, etc * \param[in] pin The pin in the group that pull mode should be selected * for * \param[in] pull_mode GPIO_PULL_OFF = pull resistor on pin is disabled * GPIO_PULL_DOWN = pull resistor on pin will pull pin * level to ground level * GPIO_PULL_UP = pull resistor on pin will pull pin * level to VCC */ static inline void _gpio_set_pin_pull_mode(const enum gpio_port port, const uint8_t pin, const enum gpio_pull_mode pull_mode); /** * \brief Set gpio function * * Select which function a gpio is used for * * \param[in] gpio The gpio to set function for * \param[in] function The gpio function is given by a 32-bit wide bitfield * found in the header files for the device * */ static inline void _gpio_set_pin_function(const uint32_t gpio, const uint32_t function); #include //@} #ifdef __cplusplus } #endif /**@}*/ #endif /* _HPL_GPIO_H_INCLUDED */