esp-protocols/common_components/protocol_examples_common/stdin_out.c

/*
 * SPDX-FileCopyrightText: 2022 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Unlicense OR CC0-1.0
 */

/*
 * Common functions for protocol examples, to configure stdin and stdout.
 */

#include "protocol_examples_common.h"
#include "esp_err.h"
#include "esp_vfs_dev.h"
#include "driver/uart.h"
#include "sdkconfig.h"

esp_err_t example_configure_stdin_stdout(void)
{
    // Initialize VFS & UART so we can use std::cout/cin
    setvbuf(stdin, NULL, _IONBF, 0);
    /* Install UART driver for interrupt-driven reads and writes */
    ESP_ERROR_CHECK( uart_driver_install( (uart_port_t)CONFIG_ESP_CONSOLE_UART_NUM,
                                          256, 0, 0, NULL, 0) );
    /* Tell VFS to use UART driver */
    esp_vfs_dev_uart_use_driver(CONFIG_ESP_CONSOLE_UART_NUM);
    esp_vfs_dev_uart_port_set_rx_line_endings(CONFIG_ESP_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CR);
    /* Move the caret to the beginning of the next line on '\n' */
    esp_vfs_dev_uart_port_set_tx_line_endings(CONFIG_ESP_CONSOLE_UART_NUM, ESP_LINE_ENDINGS_CRLF);
    return ESP_OK;
}