4 * \brief SAM D20 GPIO Port Driver
\r
6 * Copyright (C) 2012-2013 Atmel Corporation. All rights reserved.
\r
12 * Redistribution and use in source and binary forms, with or without
\r
13 * modification, are permitted provided that the following conditions are met:
\r
15 * 1. Redistributions of source code must retain the above copyright notice,
\r
16 * this list of conditions and the following disclaimer.
\r
18 * 2. Redistributions in binary form must reproduce the above copyright notice,
\r
19 * this list of conditions and the following disclaimer in the documentation
\r
20 * and/or other materials provided with the distribution.
\r
22 * 3. The name of Atmel may not be used to endorse or promote products derived
\r
23 * from this software without specific prior written permission.
\r
25 * 4. This software may only be redistributed and used in connection with an
\r
26 * Atmel microcontroller product.
\r
28 * THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
\r
29 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
\r
30 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
\r
31 * EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
\r
32 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
\r
33 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
\r
34 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
\r
35 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
\r
36 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
\r
37 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
\r
38 * POSSIBILITY OF SUCH DAMAGE.
\r
46 * \brief Writes a Port pin configuration to the hardware module.
\r
48 * Writes out a given configuration of a Port pin configuration to the hardware
\r
51 * \note If the pin direction is set as an output, the pull-up/pull-down input
\r
52 * configuration setting is ignored.
\r
54 * \param[in] gpio_pin Index of the GPIO pin to configure.
\r
55 * \param[in] config Configuration settings for the pin.
\r
57 void port_pin_set_config(
\r
58 const uint8_t gpio_pin,
\r
59 const struct port_config *const config)
\r
61 /* Sanity check arguments */
\r
64 struct system_pinmux_config pinmux_config;
\r
65 system_pinmux_get_config_defaults(&pinmux_config);
\r
67 pinmux_config.mux_position = SYSTEM_PINMUX_GPIO;
\r
68 pinmux_config.direction = (enum system_pinmux_pin_dir)config->direction;
\r
69 pinmux_config.input_pull = (enum system_pinmux_pin_pull)config->input_pull;
\r
71 system_pinmux_pin_set_config(gpio_pin, &pinmux_config);
\r
75 * \brief Writes a Port group configuration group to the hardware module.
\r
77 * Writes out a given configuration of a Port group configuration to the
\r
80 * \note If the pin direction is set as an output, the pull-up/pull-down input
\r
81 * configuration setting is ignored.
\r
83 * \param[out] port Base of the PORT module to write to.
\r
84 * \param[in] mask Mask of the port pin(s) to configure.
\r
85 * \param[in] config Configuration settings for the pin group.
\r
87 void port_group_set_config(
\r
88 PortGroup *const port,
\r
89 const uint32_t mask,
\r
90 const struct port_config *const config)
\r
92 /* Sanity check arguments */
\r
96 struct system_pinmux_config pinmux_config;
\r
97 system_pinmux_get_config_defaults(&pinmux_config);
\r
99 pinmux_config.mux_position = SYSTEM_PINMUX_GPIO;
\r
100 pinmux_config.direction = (enum system_pinmux_pin_dir)config->direction;
\r
101 pinmux_config.input_pull = (enum system_pinmux_pin_pull)config->input_pull;
\r
103 system_pinmux_group_set_config(port, mask, &pinmux_config);
\r