blob: 8dbb8dc5f43fe2f5a9b52c581142cee3c4ed0214 [file] [log] [blame]
/*
* Copyright (c) 2017 Linaro Limited.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <zephyr/zephyr.h>
#include <zephyr/drivers/uart.h>
#include <zephyr/drivers/console/console.h>
#include <zephyr/drivers/console/uart_console.h>
/* While app processes one input line, Zephyr will have another line
* buffer to accumulate more console input.
*/
static struct console_input line_bufs[2];
static K_FIFO_DEFINE(free_queue);
static K_FIFO_DEFINE(used_queue);
char *console_getline(void)
{
static struct console_input *cmd;
/* Recycle cmd buffer returned previous time */
if (cmd != NULL) {
k_fifo_put(&free_queue, cmd);
}
cmd = k_fifo_get(&used_queue, K_FOREVER);
return cmd->line;
}
void console_getline_init(void)
{
int i;
for (i = 0; i < ARRAY_SIZE(line_bufs); i++) {
k_fifo_put(&free_queue, &line_bufs[i]);
}
/* Zephyr UART handler takes an empty buffer from free_queue,
* stores UART input in it until EOL, and then puts it into
* used_queue.
*/
uart_register_input(&free_queue, &used_queue, NULL);
}