slipdev_internal.h

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/*
 * SPDX-FileCopyrightText: 2018 Freie Universität Berlin
 * SPDX-License-Identifier: LGPL-2.1-only
 */
 
#pragma once

 
#include <stddef.h>
#include <stdint.h>
 
#include "isrpipe.h"
#include "periph/uart.h"
#include "mutex.h"
 
#ifdef __cplusplus
extern "C" {
#endif

#define SLIPDEV_END         (0xc0U)
#define SLIPDEV_ESC         (0xdbU)
#define SLIPDEV_END_ESC     (0xdcU)
#define SLIPDEV_ESC_ESC     (0xddU)

#define SLIPDEV_START_STDIO (0x0aU)

#define SLIPDEV_START_COAP (0xa9U)

#define SLIPDEV_START_NET(byte) ( \
            /* is it an IPv4 packet? */ \
            (byte >= 0x45 && byte <= 0x4f) || \
            /* or is it an IPv6 packet? */ \
            (byte >= 0x60 && byte <= 0x6f) \
            )


extern isrpipe_t slipdev_stdio_isrpipe;

extern mutex_t slipdev_mutex;

static inline void slipdev_write_byte(uart_t uart, uint8_t byte)
{
    uart_write(uart, &byte, 1U);
}

void slipdev_write_bytes(uart_t uart, const uint8_t *data, size_t len);
 
#ifdef __cplusplus
}
#endif