Packages

circuits_gpio

2.0.0-pre.0
2.3.0 2.2.0 2.1.3 2.1.2 retired 2.1.1 retired 2.1.0 retired 2.0.2 retired 2.0.1 retired 2.0.0 retired 2.0.0-pre.6 retired 2.0.0-pre.5 retired 2.0.0-pre.4 retired 2.0.0-pre.3 retired 2.0.0-pre.2 retired 2.0.0-pre.1 retired 2.0.0-pre.0 retired 1.2.2 1.2.1 1.2.0 1.1.0 1.0.1 1.0.0 0.4.8 0.4.7 0.4.6 0.4.5 0.4.4 0.4.3 0.4.2 0.4.1 0.4.0 0.3.1 0.3.0 0.2.0 0.1.0

Use GPIOs in Elixir

Retired package: Release invalid - Use v2.0.0 or later
HexDocs

Current section

Files

Jump to
Readme
35 Versions
1 Dependency
42 Dependants
Files
Activity
circuits_gpio c_src hal_sysfs.h
Raw

c_src/hal_sysfs.h 

// SPDX-FileCopyrightText: 2018 Frank Hunleth, Mark Sebald, Matt Ludwigs

//

// SPDX-License-Identifier: Apache-2.0



#ifndef HAL_SYSFS_H

#define HAL_SYSFS_H



#include <stdint.h>

#include "erl_nif.h"



struct sysfs_priv {

    ErlNifTid poller_tid;

    int pipe_fds[2];



#ifdef TARGET_RPI

    uint32_t *gpio_mem;

    int gpio_fd;

#endif

};



struct gpio_pin;



int sysfs_read_gpio(int fd);

void *gpio_poller_thread(void *arg);

int update_polling_thread(struct gpio_pin *pin);



#ifdef TARGET_RPI

ERL_NIF_TERM rpi_info(ErlNifEnv *env, struct sysfs_priv *priv, ERL_NIF_TERM info);

int rpi_load(struct sysfs_priv *priv);

void rpi_unload(struct sysfs_priv *priv);

int rpi_apply_pull_mode(struct gpio_pin *pin);

#endif



#endif // HAL_SYSFS_H