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/**
* @file
*
* @ingroup raspberrypi_gpio
*
* @brief Raspberry Pi specific GPIO definitions.
*/
/*
* Copyright (c) 2015 Andre Marques <andre.lousa.marques at gmail.com>
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.rtems.org/license/LICENSE.
*/
#ifndef LIBBSP_ARM_RASPBERRYPI_RPI_GPIO_H
#define LIBBSP_ARM_RASPBERRYPI_RPI_GPIO_H
#include <rtems.h>
#ifdef __cplusplus
extern "C" {
#endif /* __cplusplus */
/**
* @brief Raspberry Pi GPIO functions.
*/
#define RPI_DIGITAL_IN 0
#define RPI_DIGITAL_OUT 1
#define RPI_ALT_FUNC_0 4
#define RPI_ALT_FUNC_1 5
#define RPI_ALT_FUNC_2 6
#define RPI_ALT_FUNC_3 7
#define RPI_ALT_FUNC_4 3
#define RPI_ALT_FUNC_5 2
#define RPI_ALT_FUNC_MASK 7
/**
* @brief Setups a JTAG interface.
*
* @retval RTEMS_SUCCESSFUL JTAG interface successfully configured.
* @retval * At least one of the required pins is currently
* occupied, @see rtems_gpio_request_pin_group().
*/
extern rtems_status_code rpi_gpio_select_jtag(void);
/**
* @brief Setups a SPI interface.
*
* @retval RTEMS_SUCCESSFUL SPI interface successfully configured.
* @retval * At least one of the required pins is currently
* occupied, @see rtems_gpio_request_pin_group().
*/
extern rtems_status_code rpi_gpio_select_spi(void);
/**
* @brief Setups a I2C interface.
*
* @retval RTEMS_SUCCESSFUL I2C interface successfully configured.
* @retval * At least one of the required pins is currently
* occupied, @see rtems_gpio_request_pin_group().
*/
extern rtems_status_code rpi_gpio_select_i2c(void);
#ifdef __cplusplus
}
#endif /* __cplusplus */
#endif /* LIBBSP_ARM_RASPBERRYPI_RPI_GPIO_H */
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