kopia lustrzana https://github.com/bristol-seds/pico-tracker
126 wiersze
4.0 KiB
C
126 wiersze
4.0 KiB
C
/**
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* SAM D20/D21/R21 GPIO Port Driver
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*
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* Copyright (C) 2012-2014 Atmel Corporation. All rights reserved.
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*
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* \asf_license_start
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*
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* \page License
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* 3. The name of Atmel may not be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* 4. This software may only be redistributed and used in connection with an
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* Atmel microcontroller product.
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*
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* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
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* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
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* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
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* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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* \asf_license_stop
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*
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*/
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#include "system/port.h"
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/**
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* Writes out a given configuration of a Port pin configuration to the hardware
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* module.
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*
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* \note If the pin direction is set as an output, the pull-up/pull-down input
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* configuration setting is ignored.
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*
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* \param[in] gpio_pin Index of the GPIO pin to configure.
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*/
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void port_pin_set_config(const uint8_t gpio_pin,
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enum port_pin_dir direction,
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enum port_pin_pull input_pull,
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bool powersave)
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{
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system_pinmux_pin_set_config(gpio_pin,
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SYSTEM_PINMUX_GPIO,
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direction,
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input_pull,
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powersave);
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}
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/**
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* Writes out the default configuration of a Port pin to the hardware
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* module.
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*
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* \note If the pin direction is set as an output, the pull-up/pull-down input
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* configuration setting is ignored.
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*
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* \param[in] gpio_pin Index of the GPIO pin to configure.
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*
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* - Input mode with internal pullup enabled
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*/
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void port_pin_set_config_default(const uint8_t gpio_pin)
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{
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port_pin_set_config(gpio_pin,
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PORT_PIN_DIR_INPUT, /* Direction */
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PORT_PIN_PULL_UP, /* Pull */
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false); /* Powersave */
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}
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/**
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* Writes out a given configuration of a Port group configuration to the
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* hardware module.
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*
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* \note If the pin direction is set as an output, the pull-up/pull-down input
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* configuration setting is ignored.
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*
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* \param[out] port Base of the PORT module to write to.
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* \param[in] mask Mask of the port pin(s) to configure.
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*/
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void port_group_set_config(PortGroup *const port,
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const uint32_t mask,
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enum port_pin_dir direction,
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enum port_pin_pull input_pull,
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bool powersave)
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{
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system_pinmux_group_set_config(port, mask,
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SYSTEM_PINMUX_GPIO,
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direction,
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input_pull,
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powersave);
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}
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/**
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* Writes out a given configuration of a Port group configuration to the
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* hardware module.
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*
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* \note If the pin direction is set as an output, the pull-up/pull-down input
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* configuration setting is ignored.
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*
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* \param[out] port Base of the PORT module to write to.
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* \param[in] mask Mask of the port pin(s) to configure.
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*
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* - Input mode with internal pullup enabled
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*/
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void port_group_set_config_default(PortGroup *const port,
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const uint32_t mask)
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{
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port_group_set_config(port, mask,
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PORT_PIN_DIR_INPUT,
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PORT_PIN_PULL_UP,
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false);
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}
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