blob: b7b8e83e4abcb11ccb8aafe42747ed17528cbf50 [file] [log] [blame]
/*
* Copyright (c) 2018 omSquare s.r.o.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/kernel.h>
#include <zephyr/irq.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(void)
{
SEGGER_RTT_Init();
return 0;
}
#ifdef CONFIG_MULTITHREADING
void zephyr_rtt_mutex_lock(void)
{
k_mutex_lock(&rtt_term_mutex, K_FOREVER);
}
void zephyr_rtt_mutex_unlock(void)
{
k_mutex_unlock(&rtt_term_mutex);
}
#endif /* CONFIG_MULTITHREADING */
unsigned int zephyr_rtt_irq_lock(void)
{
return irq_lock();
}
void zephyr_rtt_irq_unlock(unsigned int key)
{
irq_unlock(key);
}
SYS_INIT(rtt_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_OBJECTS);