blob: 4ace56f963043ca2279f09f1cf8f1288c28c2c17 [file] [log] [blame] [edit]
/* ram_console.c - Console messages to a RAM buffer */
/*
* Copyright (c) 2015 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/kernel.h>
#include <zephyr/sys/printk.h>
#include <zephyr/device.h>
#include <zephyr/init.h>
extern void __printk_hook_install(int (*fn)(int));
extern void __stdout_hook_install(int (*fn)(int));
/* Extra byte to ensure we're always NULL-terminated */
char ram_console[CONFIG_RAM_CONSOLE_BUFFER_SIZE + 1];
static int pos;
static int ram_console_out(int character)
{
ram_console[pos] = (char)character;
pos = (pos + 1) % CONFIG_RAM_CONSOLE_BUFFER_SIZE;
return character;
}
static int ram_console_init(void)
{
__printk_hook_install(ram_console_out);
__stdout_hook_install(ram_console_out);
return 0;
}
SYS_INIT(ram_console_init, PRE_KERNEL_1, CONFIG_CONSOLE_INIT_PRIORITY);