rpi-gpio.h

Go to the documentation of this file.

/* SPDX-License-Identifier: BSD-2-Clause */

 
/*
 * Copyright (C) 2023 Utkarsh Verma
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS 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.
 */
 
#ifndef LIBBSP_AARCH64_RASPBERRYPI_BSP_RPI_GPIO_H
#define LIBBSP_AARCH64_RASPBERRYPI_BSP_RPI_GPIO_H
 
#include <bspopts.h>
#include <rtems/rtems/status.h>

 
typedef enum {
  GPIO_INPUT,
  GPIO_OUTPUT,
  GPIO_AF5,
  GPIO_AF4,
  GPIO_AF0,
  GPIO_AF1,
  GPIO_AF2,
  GPIO_AF3,
} raspberrypi_gpio_function;
 
typedef enum {
  GPIO_PULL_NONE,
  GPIO_PULL_UP,
  GPIO_PULL_DOWN,
} raspberrypi_gpio_pull;

rtems_status_code raspberrypi_gpio_set_function(
  const unsigned int  pin,
  const raspberrypi_gpio_function value
);

rtems_status_code raspberrypi_gpio_set_pin(const unsigned int pin);

rtems_status_code raspberrypi_gpio_clear_pin(const unsigned int pin);

rtems_status_code raspberrypi_gpio_set_pull(
  const unsigned int pin,
  const raspberrypi_gpio_pull value
);
 
#endif /* LIBBSP_AARCH64_RASPBERRYPI_BSP_RPI_GPIO_H */