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