zephyr/drivers/console/ram_console.c
Anas Nashif 9ab2a56751 cleanup: include/: move misc/printk.h to sys/printk.h
move misc/printk.h to sys/printk.h and
create a shim for backward-compatibility.

No functional changes to the headers.
A warning in the shim can be controlled with CONFIG_COMPAT_INCLUDES.

Related to #16539

Signed-off-by: Anas Nashif <anas.nashif@intel.com>
2019-06-27 22:55:49 -04:00

39 lines
854 B
C

/* ram_console.c - Console messages to a RAM buffer */
/*
* Copyright (c) 2015 Intel Corporation
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <kernel.h>
#include <sys/printk.h>
#include <device.h>
#include <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(struct device *d)
{
ARG_UNUSED(d);
__printk_hook_install(ram_console_out);
__stdout_hook_install(ram_console_out);
return 0;
}
SYS_INIT(ram_console_init, PRE_KERNEL_1, CONFIG_KERNEL_INIT_PRIORITY_DEFAULT);