gpio_ext_common.c

Go to the documentation of this file.

/*
 * Copyright (C) Tom van Dijk <tomvand@users.noreply.github.com>
 *
 * This file is part of paparazzi
 *
 * paparazzi is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * paparazzi is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with paparazzi; see the file COPYING.  If not, see
 * <http://www.gnu.org/licenses/>.
 */
 
#include "gpio_ext_common.h"
 
#include "generated/airframe.h"
#include "generated/modules.h"
#include "mcu_periph/gpio.h"
 
#include <stdint.h>
 
 
/* External GPIO providers */
#define GPIO_EXT_NOT_PROVIDED NULL
 
#ifndef GPIO_EXT_PROVIDER1
#define GPIO_EXT_PROVIDER1 GPIO_EXT_NOT_PROVIDED
#endif
#ifndef GPIO_EXT_PROVIDER2
#define GPIO_EXT_PROVIDER2 GPIO_EXT_NOT_PROVIDED
#endif
#ifndef GPIO_EXT_PROVIDER3
#define GPIO_EXT_PROVIDER3 GPIO_EXT_NOT_PROVIDED
#endif
#ifndef GPIO_EXT_PROVIDER4
#define GPIO_EXT_PROVIDER4 GPIO_EXT_NOT_PROVIDED
#endif
 
static struct gpio_ext_functions *gpio_ext_impl[GPIOEXT_NB] = {
    GPIO_EXT_PROVIDER1,
    GPIO_EXT_PROVIDER2,
    GPIO_EXT_PROVIDER3,
    GPIO_EXT_PROVIDER4,
};
 
 
/*
 * External GPIO implementation
 */
#define SAFE_CALL(_port, _fn, _args...) if(gpio_ext_impl[_port - GPIOEXT1] && gpio_ext_impl[_port - GPIOEXT1]->_fn) gpio_ext_impl[_port - GPIOEXT1]->_fn(_args);
 
// Wrapping functions
void __wrap_gpio_setup_output(uint32_t port, uint32_t gpios);
void __real_gpio_setup_output(uint32_t port, uint32_t gpios);
void __wrap_gpio_setup_output(uint32_t port, uint32_t gpios) {
  if (port >= GPIOEXT1 && port < GPIOEXT1 + GPIOEXT_NB) {
    SAFE_CALL(port, setup_output, port, gpios);
  } else {
    __real_gpio_setup_output(port, gpios);
  }
}
 
void __wrap_gpio_setup_input(uint32_t port, uint32_t gpios);
void __real_gpio_setup_input(uint32_t port, uint32_t gpios);
void __wrap_gpio_setup_input(uint32_t port, uint32_t gpios) {
  if (port >= GPIOEXT1 && port < GPIOEXT1 + GPIOEXT_NB) {
    SAFE_CALL(port, setup_input, port, gpios);
  } else {
    __real_gpio_setup_input(port, gpios);
  }
}
 
uint32_t __wrap_gpio_get(uint32_t port, uint32_t gpios);
uint32_t __real_gpio_get(uint32_t port, uint32_t gpios);
uint32_t __wrap_gpio_get(uint32_t port, uint32_t gpios) {
  if (port >= GPIOEXT1 && port < GPIOEXT1 + GPIOEXT_NB) {
    if (gpio_ext_impl[port - GPIOEXT1] && gpio_ext_impl[port - GPIOEXT1]->get) {
      return gpio_ext_impl[port - GPIOEXT1]->get(port, gpios);
    } else {
      return 0;
    }
  } else {
    return __real_gpio_get(port, gpios);
  }
}
 
void __wrap_gpio_set(uint32_t port, uint32_t gpios);
void __real_gpio_set(uint32_t port, uint32_t gpios);
void __wrap_gpio_set(uint32_t port, uint32_t gpios) {
  if (port >= GPIOEXT1 && port < GPIOEXT1 + GPIOEXT_NB) {
    SAFE_CALL(port, set, port, gpios);
  } else {
    __real_gpio_set(port, gpios);
  }
}
 
void __wrap_gpio_clear(uint32_t port, uint32_t gpios);
void __real_gpio_clear(uint32_t port, uint32_t gpios);
void __wrap_gpio_clear(uint32_t port, uint32_t gpios) {
  if (port >= GPIOEXT1 && port < GPIOEXT1 + GPIOEXT_NB) {
    SAFE_CALL(port, clear, port, gpios);
  } else {
    __real_gpio_clear(port, gpios);
  }
}
 
void __wrap_gpio_toggle(uint32_t port, uint32_t gpios);
void __real_gpio_toggle(uint32_t port, uint32_t gpios);
void __wrap_gpio_toggle(uint32_t port, uint32_t gpios) {
  if (port >= GPIOEXT1 && port < GPIOEXT1 + GPIOEXT_NB) {
    SAFE_CALL(port, toggle, port, gpios);
  } else {
    __real_gpio_toggle(port, gpios);
  }
}