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/* rtt_console.c - Console messages to a RAM buffer that is then read by
* the Segger J-Link debugger
*/
/*
* Copyright (c) 2016 Nordic Semiconductor ASA
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <kernel.h>
#include <misc/printk.h>
#include <device.h>
#include <init.h>
#include <rtt/SEGGER_RTT.h>
extern void __printk_hook_install(int (*fn)(int));
extern void __stdout_hook_install(int (*fn)(int));
static int rtt_console_out(int character)
{
unsigned int key;
char c = (char)character;
key = irq_lock();
SEGGER_RTT_WriteNoLock(0, &c, 1);
irq_unlock(key);
return character;
}
static int rtt_console_init(struct device *d)
{
ARG_UNUSED(d);
SEGGER_RTT_Init();
__printk_hook_install(rtt_console_out);
__stdout_hook_install(rtt_console_out);
return 0;
}
SYS_INIT(rtt_console_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);
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