zephyr/modules/segger/SEGGER_RTT_zephyr.c

/*
 * Copyright (c) 2018 omSquare s.r.o.
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <zephyr/kernel.h>
#include <zephyr/init.h>
#include "SEGGER_RTT.h"

/*
 * Common mutex for locking access to terminal buffer.
 * Note that SEGGER uses same lock macros for both SEGGER_RTT_Write and
 * SEGGER_RTT_Read functions. Because of this we are not able generally
 * separate up and down access using two mutexes until SEGGER library fix
 * this.
 *
 * If sharing access cause performance problems, consider using another
 * non terminal buffers.
 */

K_MUTEX_DEFINE(rtt_term_mutex);

static int rtt_init(const struct device *unused)
{
	ARG_UNUSED(unused);

	SEGGER_RTT_Init();

	return 0;
}

SYS_INIT(rtt_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_OBJECTS);