esp-idf/examples/system/console/basic/main/console_example_main.c

/* Basic console example (esp_console_repl API)

   This example code is in the Public Domain (or CC0 licensed, at your option.)

   Unless required by applicable law or agreed to in writing, this
   software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
   CONDITIONS OF ANY KIND, either express or implied.
*/

#include <stdio.h>
#include <string.h>
#include "esp_system.h"
#include "esp_log.h"
#include "esp_console.h"
#include "esp_vfs_dev.h"
#include "esp_vfs_fat.h"
#include "nvs.h"
#include "nvs_flash.h"
#include "cmd_system.h"
#include "cmd_wifi.h"
#include "cmd_nvs.h"

/*
 * We warn if a secondary serial console is enabled. A secondary serial console is always output-only and
 * hence not very useful for interactive console applications. If you encounter this warning, consider disabling
 * the secondary serial console in menuconfig unless you know what you are doing.
 */
#if SOC_USB_SERIAL_JTAG_SUPPORTED
#if !CONFIG_ESP_CONSOLE_SECONDARY_NONE
#warning "A secondary serial console is not useful when using the console component. Please disable it in menuconfig."
#endif
#endif

static const char* TAG = "example";
#define PROMPT_STR CONFIG_IDF_TARGET

/* Console command history can be stored to and loaded from a file.
 * The easiest way to do this is to use FATFS filesystem on top of
 * wear_levelling library.
 */
#if CONFIG_CONSOLE_STORE_HISTORY

#define MOUNT_PATH "/data"
#define HISTORY_PATH MOUNT_PATH "/history.txt"

static void initialize_filesystem(void)
{
    static wl_handle_t wl_handle;
    const esp_vfs_fat_mount_config_t mount_config = {
            .max_files = 4,
            .format_if_mount_failed = true
    };
    esp_err_t err = esp_vfs_fat_spiflash_mount_rw_wl(MOUNT_PATH, "storage", &mount_config, &wl_handle);
    if (err != ESP_OK) {
        ESP_LOGE(TAG, "Failed to mount FATFS (%s)", esp_err_to_name(err));
        return;
    }
}
#endif // CONFIG_STORE_HISTORY

static void initialize_nvs(void)
{
    esp_err_t err = nvs_flash_init();
    if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND) {
        ESP_ERROR_CHECK( nvs_flash_erase() );
        err = nvs_flash_init();
    }
    ESP_ERROR_CHECK(err);
}

void app_main(void)
{
    esp_console_repl_t *repl = NULL;
    esp_console_repl_config_t repl_config = ESP_CONSOLE_REPL_CONFIG_DEFAULT();
    /* Prompt to be printed before each line.
     * This can be customized, made dynamic, etc.
     */
    repl_config.prompt = PROMPT_STR ">";
    repl_config.max_cmdline_length = CONFIG_CONSOLE_MAX_COMMAND_LINE_LENGTH;

    initialize_nvs();

#if CONFIG_CONSOLE_STORE_HISTORY
    initialize_filesystem();
    repl_config.history_save_path = HISTORY_PATH;
    ESP_LOGI(TAG, "Command history enabled");
#else
    ESP_LOGI(TAG, "Command history disabled");
#endif

    /* Register commands */
    esp_console_register_help_command();
    register_system_common();
    register_system_sleep();
#if SOC_WIFI_SUPPORTED
    register_wifi();
#endif
    register_nvs();

#if defined(CONFIG_ESP_CONSOLE_UART_DEFAULT) || defined(CONFIG_ESP_CONSOLE_UART_CUSTOM)
    esp_console_dev_uart_config_t hw_config = ESP_CONSOLE_DEV_UART_CONFIG_DEFAULT();
    ESP_ERROR_CHECK(esp_console_new_repl_uart(&hw_config, &repl_config, &repl));

#elif defined(CONFIG_ESP_CONSOLE_USB_CDC)
    esp_console_dev_usb_cdc_config_t hw_config = ESP_CONSOLE_DEV_CDC_CONFIG_DEFAULT();
    ESP_ERROR_CHECK(esp_console_new_repl_usb_cdc(&hw_config, &repl_config, &repl));

#elif defined(CONFIG_ESP_CONSOLE_USB_SERIAL_JTAG)
    esp_console_dev_usb_serial_jtag_config_t hw_config = ESP_CONSOLE_DEV_USB_SERIAL_JTAG_CONFIG_DEFAULT();
    ESP_ERROR_CHECK(esp_console_new_repl_usb_serial_jtag(&hw_config, &repl_config, &repl));

#else
#error Unsupported console type
#endif

    ESP_ERROR_CHECK(esp_console_start_repl(repl));
}