VILLASnode/include/villas/nodes/can.hpp

/* Node-type: CAN bus.
 *
 * Author: Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
 * SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
 * SPDX-License-Identifier: Apache-2.0
 */

#pragma once

#include <jansson.h>

#include <villas/timing.hpp>

namespace villas {
namespace node {

// Forward declarations
class NodeCompat;
union SignalData;

struct can_signal {
  uint32_t id;
  int offset;
  int size;
};

struct can {
  // Settings
  char *interface_name;
  struct can_signal *in;
  struct can_signal *out;

  // States
  int socket;
  union SignalData *sample_buf;
  size_t sample_buf_num;
  struct timespec start_time;
};

int can_init(NodeCompat *n);

int can_destroy(NodeCompat *n);

int can_parse(NodeCompat *n, json_t *json);

char *can_print(NodeCompat *n);

int can_check(NodeCompat *n);

int can_prepare(NodeCompat *n);

int can_start(NodeCompat *n);

int can_stop(NodeCompat *n);

int can_write(NodeCompat *n, struct Sample *const smps[], unsigned cnt);

int can_read(NodeCompat *n, struct Sample *const smps[], unsigned cnt);

int can_poll_fds(NodeCompat *n, int fds[]);

} // namespace node
} // namespace villas