esp-idf/examples/bluetooth/esp_hid_device/main/esp_hid_device_main.c

/*
 * SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Unlicense OR CC0-1.0
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "freertos/event_groups.h"
#include "esp_system.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "esp_log.h"
#include "nvs_flash.h"
#include "esp_bt.h"
#include "esp_bt_defs.h"
#if CONFIG_BT_BLE_ENABLED
#include "esp_gap_ble_api.h"
#include "esp_gatts_api.h"
#include "esp_gatt_defs.h"
#endif
#include "esp_bt_main.h"
#include "esp_bt_device.h"

#include "esp_hidd.h"
#include "esp_hid_gap.h"

static const char *TAG = "HID_DEV_DEMO";

typedef struct
{
    TaskHandle_t task_hdl;
    esp_hidd_dev_t *hid_dev;
    uint8_t protocol_mode;
    uint8_t *buffer;
} local_param_t;

#if CONFIG_BT_BLE_ENABLED
static local_param_t s_ble_hid_param = {0};
const unsigned char hidapiReportMap[] = { //8 bytes input, 8 bytes feature
    0x06, 0x00, 0xFF,  // Usage Page (Vendor Defined 0xFF00)
    0x0A, 0x00, 0x01,  // Usage (0x0100)
    0xA1, 0x01,        // Collection (Application)
    0x85, 0x01,        //   Report ID (1)
    0x15, 0x00,        //   Logical Minimum (0)
    0x26, 0xFF, 0x00,  //   Logical Maximum (255)
    0x75, 0x08,        //   Report Size (8)
    0x95, 0x08,        //   Report Count (8)
    0x09, 0x01,        //   Usage (0x01)
    0x82, 0x02, 0x01,  //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Buffered Bytes)
    0x95, 0x08,        //   Report Count (8)
    0x09, 0x02,        //   Usage (0x02)
    0xB2, 0x02, 0x01,  //   Feature (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile,Buffered Bytes)
    0x95, 0x08,        //   Report Count (8)
    0x09, 0x03,        //   Usage (0x03)
    0x91, 0x02,        //   Output (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position,Non-volatile)
    0xC0,              // End Collection

    // 38 bytes
};

const unsigned char mediaReportMap[] = {
    0x05, 0x0C,        // Usage Page (Consumer)
    0x09, 0x01,        // Usage (Consumer Control)
    0xA1, 0x01,        // Collection (Application)
    0x85, 0x03,        //   Report ID (3)
    0x09, 0x02,        //   Usage (Numeric Key Pad)
    0xA1, 0x02,        //   Collection (Logical)
    0x05, 0x09,        //     Usage Page (Button)
    0x19, 0x01,        //     Usage Minimum (0x01)
    0x29, 0x0A,        //     Usage Maximum (0x0A)
    0x15, 0x01,        //     Logical Minimum (1)
    0x25, 0x0A,        //     Logical Maximum (10)
    0x75, 0x04,        //     Report Size (4)
    0x95, 0x01,        //     Report Count (1)
    0x81, 0x00,        //     Input (Data,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
    0xC0,              //   End Collection
    0x05, 0x0C,        //   Usage Page (Consumer)
    0x09, 0x86,        //   Usage (Channel)
    0x15, 0xFF,        //   Logical Minimum (-1)
    0x25, 0x01,        //   Logical Maximum (1)
    0x75, 0x02,        //   Report Size (2)
    0x95, 0x01,        //   Report Count (1)
    0x81, 0x46,        //   Input (Data,Var,Rel,No Wrap,Linear,Preferred State,Null State)
    0x09, 0xE9,        //   Usage (Volume Increment)
    0x09, 0xEA,        //   Usage (Volume Decrement)
    0x15, 0x00,        //   Logical Minimum (0)
    0x75, 0x01,        //   Report Size (1)
    0x95, 0x02,        //   Report Count (2)
    0x81, 0x02,        //   Input (Data,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
    0x09, 0xE2,        //   Usage (Mute)
    0x09, 0x30,        //   Usage (Power)
    0x09, 0x83,        //   Usage (Recall Last)
    0x09, 0x81,        //   Usage (Assign Selection)
    0x09, 0xB0,        //   Usage (Play)
    0x09, 0xB1,        //   Usage (Pause)
    0x09, 0xB2,        //   Usage (Record)
    0x09, 0xB3,        //   Usage (Fast Forward)
    0x09, 0xB4,        //   Usage (Rewind)
    0x09, 0xB5,        //   Usage (Scan Next Track)
    0x09, 0xB6,        //   Usage (Scan Previous Track)
    0x09, 0xB7,        //   Usage (Stop)
    0x15, 0x01,        //   Logical Minimum (1)
    0x25, 0x0C,        //   Logical Maximum (12)
    0x75, 0x04,        //   Report Size (4)
    0x95, 0x01,        //   Report Count (1)
    0x81, 0x00,        //   Input (Data,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
    0x09, 0x80,        //   Usage (Selection)
    0xA1, 0x02,        //   Collection (Logical)
    0x05, 0x09,        //     Usage Page (Button)
    0x19, 0x01,        //     Usage Minimum (0x01)
    0x29, 0x03,        //     Usage Maximum (0x03)
    0x15, 0x01,        //     Logical Minimum (1)
    0x25, 0x03,        //     Logical Maximum (3)
    0x75, 0x02,        //     Report Size (2)
    0x81, 0x00,        //     Input (Data,Array,Abs,No Wrap,Linear,Preferred State,No Null Position)
    0xC0,              //   End Collection
    0x81, 0x03,        //   Input (Const,Var,Abs,No Wrap,Linear,Preferred State,No Null Position)
    0xC0,              // End Collection
};

static esp_hid_raw_report_map_t ble_report_maps[] = {
    {
        .data = hidapiReportMap,
        .len = sizeof(hidapiReportMap)
    },
    {
        .data = mediaReportMap,
        .len = sizeof(mediaReportMap)
    }
};

static esp_hid_device_config_t ble_hid_config = {
    .vendor_id          = 0x16C0,
    .product_id         = 0x05DF,
    .version            = 0x0100,
    .device_name        = "ESP BLE HID2",
    .manufacturer_name  = "Espressif",
    .serial_number      = "1234567890",
    .report_maps        = ble_report_maps,
    .report_maps_len    = 2
};

#define HID_CC_RPT_MUTE                 1
#define HID_CC_RPT_POWER                2
#define HID_CC_RPT_LAST                 3
#define HID_CC_RPT_ASSIGN_SEL           4
#define HID_CC_RPT_PLAY                 5
#define HID_CC_RPT_PAUSE                6
#define HID_CC_RPT_RECORD               7
#define HID_CC_RPT_FAST_FWD             8
#define HID_CC_RPT_REWIND               9
#define HID_CC_RPT_SCAN_NEXT_TRK        10
#define HID_CC_RPT_SCAN_PREV_TRK        11
#define HID_CC_RPT_STOP                 12

#define HID_CC_RPT_CHANNEL_UP           0x10
#define HID_CC_RPT_CHANNEL_DOWN         0x30
#define HID_CC_RPT_VOLUME_UP            0x40
#define HID_CC_RPT_VOLUME_DOWN          0x80

// HID Consumer Control report bitmasks
#define HID_CC_RPT_NUMERIC_BITS         0xF0
#define HID_CC_RPT_CHANNEL_BITS         0xCF
#define HID_CC_RPT_VOLUME_BITS          0x3F
#define HID_CC_RPT_BUTTON_BITS          0xF0
#define HID_CC_RPT_SELECTION_BITS       0xCF

// Macros for the HID Consumer Control 2-byte report
#define HID_CC_RPT_SET_NUMERIC(s, x)    (s)[0] &= HID_CC_RPT_NUMERIC_BITS;   (s)[0] = (x)
#define HID_CC_RPT_SET_CHANNEL(s, x)    (s)[0] &= HID_CC_RPT_CHANNEL_BITS;   (s)[0] |= ((x) & 0x03) << 4
#define HID_CC_RPT_SET_VOLUME_UP(s)     (s)[0] &= HID_CC_RPT_VOLUME_BITS;    (s)[0] |= 0x40
#define HID_CC_RPT_SET_VOLUME_DOWN(s)   (s)[0] &= HID_CC_RPT_VOLUME_BITS;    (s)[0] |= 0x80
#define HID_CC_RPT_SET_BUTTON(s, x)     (s)[1] &= HID_CC_RPT_BUTTON_BITS;    (s)[1] |= (x)
#define HID_CC_RPT_SET_SELECTION(s, x)  (s)[1] &= HID_CC_RPT_SELECTION_BITS; (s)[1] |= ((x) & 0x03) << 4

// HID Consumer Usage IDs (subset of the codes available in the USB HID Usage Tables spec)
#define HID_CONSUMER_POWER          48  // Power
#define HID_CONSUMER_RESET          49  // Reset
#define HID_CONSUMER_SLEEP          50  // Sleep

#define HID_CONSUMER_MENU           64  // Menu
#define HID_CONSUMER_SELECTION      128 // Selection
#define HID_CONSUMER_ASSIGN_SEL     129 // Assign Selection
#define HID_CONSUMER_MODE_STEP      130 // Mode Step
#define HID_CONSUMER_RECALL_LAST    131 // Recall Last
#define HID_CONSUMER_QUIT           148 // Quit
#define HID_CONSUMER_HELP           149 // Help
#define HID_CONSUMER_CHANNEL_UP     156 // Channel Increment
#define HID_CONSUMER_CHANNEL_DOWN   157 // Channel Decrement

#define HID_CONSUMER_PLAY           176 // Play
#define HID_CONSUMER_PAUSE          177 // Pause
#define HID_CONSUMER_RECORD         178 // Record
#define HID_CONSUMER_FAST_FORWARD   179 // Fast Forward
#define HID_CONSUMER_REWIND         180 // Rewind
#define HID_CONSUMER_SCAN_NEXT_TRK  181 // Scan Next Track
#define HID_CONSUMER_SCAN_PREV_TRK  182 // Scan Previous Track
#define HID_CONSUMER_STOP           183 // Stop
#define HID_CONSUMER_EJECT          184 // Eject
#define HID_CONSUMER_RANDOM_PLAY    185 // Random Play
#define HID_CONSUMER_SELECT_DISC    186 // Select Disk
#define HID_CONSUMER_ENTER_DISC     187 // Enter Disc
#define HID_CONSUMER_REPEAT         188 // Repeat
#define HID_CONSUMER_STOP_EJECT     204 // Stop/Eject
#define HID_CONSUMER_PLAY_PAUSE     205 // Play/Pause
#define HID_CONSUMER_PLAY_SKIP      206 // Play/Skip

#define HID_CONSUMER_VOLUME         224 // Volume
#define HID_CONSUMER_BALANCE        225 // Balance
#define HID_CONSUMER_MUTE           226 // Mute
#define HID_CONSUMER_BASS           227 // Bass
#define HID_CONSUMER_VOLUME_UP      233 // Volume Increment
#define HID_CONSUMER_VOLUME_DOWN    234 // Volume Decrement

#define HID_RPT_ID_CC_IN        3   // Consumer Control input report ID
#define HID_CC_IN_RPT_LEN       2   // Consumer Control input report Len
void esp_hidd_send_consumer_value(uint8_t key_cmd, bool key_pressed)
{
    uint8_t buffer[HID_CC_IN_RPT_LEN] = {0, 0};
    if (key_pressed) {
        switch (key_cmd) {
        case HID_CONSUMER_CHANNEL_UP:
            HID_CC_RPT_SET_CHANNEL(buffer, HID_CC_RPT_CHANNEL_UP);
            break;

        case HID_CONSUMER_CHANNEL_DOWN:
            HID_CC_RPT_SET_CHANNEL(buffer, HID_CC_RPT_CHANNEL_DOWN);
            break;

        case HID_CONSUMER_VOLUME_UP:
            HID_CC_RPT_SET_VOLUME_UP(buffer);
            break;

        case HID_CONSUMER_VOLUME_DOWN:
            HID_CC_RPT_SET_VOLUME_DOWN(buffer);
            break;

        case HID_CONSUMER_MUTE:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_MUTE);
            break;

        case HID_CONSUMER_POWER:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_POWER);
            break;

        case HID_CONSUMER_RECALL_LAST:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_LAST);
            break;

        case HID_CONSUMER_ASSIGN_SEL:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_ASSIGN_SEL);
            break;

        case HID_CONSUMER_PLAY:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_PLAY);
            break;

        case HID_CONSUMER_PAUSE:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_PAUSE);
            break;

        case HID_CONSUMER_RECORD:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_RECORD);
            break;

        case HID_CONSUMER_FAST_FORWARD:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_FAST_FWD);
            break;

        case HID_CONSUMER_REWIND:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_REWIND);
            break;

        case HID_CONSUMER_SCAN_NEXT_TRK:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_SCAN_NEXT_TRK);
            break;

        case HID_CONSUMER_SCAN_PREV_TRK:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_SCAN_PREV_TRK);
            break;

        case HID_CONSUMER_STOP:
            HID_CC_RPT_SET_BUTTON(buffer, HID_CC_RPT_STOP);
            break;

        default:
            break;
        }
    }
    esp_hidd_dev_input_set(s_ble_hid_param.hid_dev, 1, HID_RPT_ID_CC_IN, buffer, HID_CC_IN_RPT_LEN);
    return;
}

void ble_hid_demo_task(void *pvParameters)
{
    static bool send_volum_up = false;
    while (1) {
        ESP_LOGI(TAG, "Send the volume");
        if (send_volum_up) {
            esp_hidd_send_consumer_value(HID_CONSUMER_VOLUME_UP, true);
            vTaskDelay(100 / portTICK_PERIOD_MS);
            esp_hidd_send_consumer_value(HID_CONSUMER_VOLUME_UP, false);
        } else {
            esp_hidd_send_consumer_value(HID_CONSUMER_VOLUME_DOWN, true);
            vTaskDelay(100 / portTICK_PERIOD_MS);
            esp_hidd_send_consumer_value(HID_CONSUMER_VOLUME_DOWN, false);
        }
        send_volum_up = !send_volum_up;
        vTaskDelay(2000 / portTICK_PERIOD_MS);
    }
}

void ble_hid_task_start_up(void)
{
    xTaskCreate(ble_hid_demo_task, "ble_hid_demo_task", 2 * 1024, NULL, configMAX_PRIORITIES - 3,
                &s_ble_hid_param.task_hdl);
}

void ble_hid_task_shut_down(void)
{
    if (s_ble_hid_param.task_hdl) {
        vTaskDelete(s_ble_hid_param.task_hdl);
        s_ble_hid_param.task_hdl = NULL;
    }
}

static void ble_hidd_event_callback(void *handler_args, esp_event_base_t base, int32_t id, void *event_data)
{
    esp_hidd_event_t event = (esp_hidd_event_t)id;
    esp_hidd_event_data_t *param = (esp_hidd_event_data_t *)event_data;
    static const char *TAG = "HID_DEV_BLE";

    switch (event) {
    case ESP_HIDD_START_EVENT: {
        ESP_LOGI(TAG, "START");
        esp_hid_ble_gap_adv_start();
        break;
    }
    case ESP_HIDD_CONNECT_EVENT: {
        ESP_LOGI(TAG, "CONNECT");
        ble_hid_task_start_up();//todo: this should be on auth_complete (in GAP)
        break;
    }
    case ESP_HIDD_PROTOCOL_MODE_EVENT: {
        ESP_LOGI(TAG, "PROTOCOL MODE[%u]: %s", param->protocol_mode.map_index, param->protocol_mode.protocol_mode ? "REPORT" : "BOOT");
        break;
    }
    case ESP_HIDD_CONTROL_EVENT: {
        ESP_LOGI(TAG, "CONTROL[%u]: %sSUSPEND", param->control.map_index, param->control.control ? "EXIT_" : "");
        break;
    }
    case ESP_HIDD_OUTPUT_EVENT: {
        ESP_LOGI(TAG, "OUTPUT[%u]: %8s ID: %2u, Len: %d, Data:", param->output.map_index, esp_hid_usage_str(param->output.usage), param->output.report_id, param->output.length);
        ESP_LOG_BUFFER_HEX(TAG, param->output.data, param->output.length);
        break;
    }
    case ESP_HIDD_FEATURE_EVENT: {
        ESP_LOGI(TAG, "FEATURE[%u]: %8s ID: %2u, Len: %d, Data:", param->feature.map_index, esp_hid_usage_str(param->feature.usage), param->feature.report_id, param->feature.length);
        ESP_LOG_BUFFER_HEX(TAG, param->feature.data, param->feature.length);
        break;
    }
    case ESP_HIDD_DISCONNECT_EVENT: {
        ESP_LOGI(TAG, "DISCONNECT: %s", esp_hid_disconnect_reason_str(esp_hidd_dev_transport_get(param->disconnect.dev), param->disconnect.reason));
        ble_hid_task_shut_down();
        esp_hid_ble_gap_adv_start();
        break;
    }
    case ESP_HIDD_STOP_EVENT: {
        ESP_LOGI(TAG, "STOP");
        break;
    }
    default:
        break;
    }
    return;
}
#endif

#if CONFIG_BT_HID_DEVICE_ENABLED
static local_param_t s_bt_hid_param = {0};
const unsigned char mouseReportMap[] = {
    0x05, 0x01,                    // USAGE_PAGE (Generic Desktop)
    0x09, 0x02,                    // USAGE (Mouse)
    0xa1, 0x01,                    // COLLECTION (Application)

    0x09, 0x01,                    //   USAGE (Pointer)
    0xa1, 0x00,                    //   COLLECTION (Physical)

    0x05, 0x09,                    //     USAGE_PAGE (Button)
    0x19, 0x01,                    //     USAGE_MINIMUM (Button 1)
    0x29, 0x03,                    //     USAGE_MAXIMUM (Button 3)
    0x15, 0x00,                    //     LOGICAL_MINIMUM (0)
    0x25, 0x01,                    //     LOGICAL_MAXIMUM (1)
    0x95, 0x03,                    //     REPORT_COUNT (3)
    0x75, 0x01,                    //     REPORT_SIZE (1)
    0x81, 0x02,                    //     INPUT (Data,Var,Abs)
    0x95, 0x01,                    //     REPORT_COUNT (1)
    0x75, 0x05,                    //     REPORT_SIZE (5)
    0x81, 0x03,                    //     INPUT (Cnst,Var,Abs)

    0x05, 0x01,                    //     USAGE_PAGE (Generic Desktop)
    0x09, 0x30,                    //     USAGE (X)
    0x09, 0x31,                    //     USAGE (Y)
    0x09, 0x38,                    //     USAGE (Wheel)
    0x15, 0x81,                    //     LOGICAL_MINIMUM (-127)
    0x25, 0x7f,                    //     LOGICAL_MAXIMUM (127)
    0x75, 0x08,                    //     REPORT_SIZE (8)
    0x95, 0x03,                    //     REPORT_COUNT (3)
    0x81, 0x06,                    //     INPUT (Data,Var,Rel)

    0xc0,                          //   END_COLLECTION
    0xc0                           // END_COLLECTION
};

static esp_hid_raw_report_map_t bt_report_maps[] = {
    {
        .data = mouseReportMap,
        .len = sizeof(mouseReportMap)
    },
};

static esp_hid_device_config_t bt_hid_config = {
    .vendor_id          = 0x16C0,
    .product_id         = 0x05DF,
    .version            = 0x0100,
    .device_name        = "ESP BT HID1",
    .manufacturer_name  = "Espressif",
    .serial_number      = "1234567890",
    .report_maps        = bt_report_maps,
    .report_maps_len    = 1
};

// send the buttons, change in x, and change in y
void send_mouse(uint8_t buttons, char dx, char dy, char wheel)
{
    static uint8_t buffer[4] = {0};
    buffer[0] = buttons;
    buffer[1] = dx;
    buffer[2] = dy;
    buffer[3] = wheel;
    esp_hidd_dev_input_set(s_bt_hid_param.hid_dev, 0, 0, buffer, 4);
}

void bt_hid_demo_task(void *pvParameters)
{
    static const char* help_string = "########################################################################\n"\
    "BT hid mouse demo usage:\n"\
    "You can input these value to simulate mouse: 'q', 'w', 'e', 'a', 's', 'd', 'h'\n"\
    "q -- click the left key\n"\
    "w -- move up\n"\
    "e -- click the right key\n"\
    "a -- move left\n"\
    "s -- move down\n"\
    "d -- move right\n"\
    "h -- show the help\n"\
    "########################################################################\n";
    printf("%s\n", help_string);
    char c;
    while (1) {
        c = fgetc(stdin);
        switch (c) {
        case 'q':
            send_mouse(1, 0, 0, 0);
            break;
        case 'w':
            send_mouse(0, 0, -10, 0);
            break;
        case 'e':
            send_mouse(2, 0, 0, 0);
            break;
        case 'a':
            send_mouse(0, -10, 0, 0);
            break;
        case 's':
            send_mouse(0, 0, 10, 0);
            break;
        case 'd':
            send_mouse(0, 10, 0, 0);
            break;
        case 'h':
            printf("%s\n", help_string);
            break;
        default:
            break;
        }
        vTaskDelay(10 / portTICK_PERIOD_MS);
    }
}

void bt_hid_task_start_up(void)
{
    xTaskCreate(bt_hid_demo_task, "bt_hid_demo_task", 2 * 1024, NULL, configMAX_PRIORITIES - 3, &s_bt_hid_param.task_hdl);
    return;
}

void bt_hid_task_shut_down(void)
{
    if (s_bt_hid_param.task_hdl) {
        vTaskDelete(s_bt_hid_param.task_hdl);
        s_bt_hid_param.task_hdl = NULL;
    }
}

static void bt_hidd_event_callback(void *handler_args, esp_event_base_t base, int32_t id, void *event_data)
{
    esp_hidd_event_t event = (esp_hidd_event_t)id;
    esp_hidd_event_data_t *param = (esp_hidd_event_data_t *)event_data;
    static const char *TAG = "HID_DEV_BT";

    switch (event) {
    case ESP_HIDD_START_EVENT: {
        if (param->start.status == ESP_OK) {
            ESP_LOGI(TAG, "START OK");
            ESP_LOGI(TAG, "Setting to connectable, discoverable");
            esp_bt_gap_set_scan_mode(ESP_BT_CONNECTABLE, ESP_BT_GENERAL_DISCOVERABLE);
        } else {
            ESP_LOGE(TAG, "START failed!");
        }
        break;
    }
    case ESP_HIDD_CONNECT_EVENT: {
        if (param->connect.status == ESP_OK) {
            ESP_LOGI(TAG, "CONNECT OK");
            ESP_LOGI(TAG, "Setting to non-connectable, non-discoverable");
            esp_bt_gap_set_scan_mode(ESP_BT_NON_CONNECTABLE, ESP_BT_NON_DISCOVERABLE);
            bt_hid_task_start_up();
        } else {
            ESP_LOGE(TAG, "CONNECT failed!");
        }
        break;
    }
    case ESP_HIDD_PROTOCOL_MODE_EVENT: {
        ESP_LOGI(TAG, "PROTOCOL MODE[%u]: %s", param->protocol_mode.map_index, param->protocol_mode.protocol_mode ? "REPORT" : "BOOT");
        break;
    }
    case ESP_HIDD_OUTPUT_EVENT: {
        ESP_LOGI(TAG, "OUTPUT[%u]: %8s ID: %2u, Len: %d, Data:", param->output.map_index, esp_hid_usage_str(param->output.usage), param->output.report_id, param->output.length);
        ESP_LOG_BUFFER_HEX(TAG, param->output.data, param->output.length);
        break;
    }
    case ESP_HIDD_FEATURE_EVENT: {
        ESP_LOGI(TAG, "FEATURE[%u]: %8s ID: %2u, Len: %d, Data:", param->feature.map_index, esp_hid_usage_str(param->feature.usage), param->feature.report_id, param->feature.length);
        ESP_LOG_BUFFER_HEX(TAG, param->feature.data, param->feature.length);
        break;
    }
    case ESP_HIDD_DISCONNECT_EVENT: {
        if (param->disconnect.status == ESP_OK) {
            ESP_LOGI(TAG, "DISCONNECT OK");
            bt_hid_task_shut_down();
            ESP_LOGI(TAG, "Setting to connectable, discoverable again");
            esp_bt_gap_set_scan_mode(ESP_BT_CONNECTABLE, ESP_BT_GENERAL_DISCOVERABLE);
        } else {
            ESP_LOGE(TAG, "DISCONNECT failed!");
        }
        break;
    }
    case ESP_HIDD_STOP_EVENT: {
        ESP_LOGI(TAG, "STOP");
        break;
    }
    default:
        break;
    }
    return;
}
#endif

void app_main(void)
{
    esp_err_t ret;
#if HID_DEV_MODE == HIDD_IDLE_MODE
    ESP_LOGE(TAG, "Please turn on BT HID device or BLE!");
    return;
#endif
    ret = nvs_flash_init();
    if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
        ESP_ERROR_CHECK(nvs_flash_erase());
        ret = nvs_flash_init();
    }
    ESP_ERROR_CHECK( ret );

    ESP_LOGI(TAG, "setting hid gap, mode:%d", HID_DEV_MODE);
    ret = esp_hid_gap_init(HID_DEV_MODE);
    ESP_ERROR_CHECK( ret );

#if CONFIG_BT_BLE_ENABLED
    ret = esp_hid_ble_gap_adv_init(ESP_HID_APPEARANCE_GENERIC, ble_hid_config.device_name);
    ESP_ERROR_CHECK( ret );

    if ((ret = esp_ble_gatts_register_callback(esp_hidd_gatts_event_handler)) != ESP_OK) {
        ESP_LOGE(TAG, "GATTS register callback failed: %d", ret);
        return;
    }
    ESP_LOGI(TAG, "setting ble device");
    ESP_ERROR_CHECK(
        esp_hidd_dev_init(&ble_hid_config, ESP_HID_TRANSPORT_BLE, ble_hidd_event_callback, &s_ble_hid_param.hid_dev));
#endif

#if CONFIG_BT_HID_DEVICE_ENABLED
    ESP_LOGI(TAG, "setting device name");
    esp_bt_dev_set_device_name(bt_hid_config.device_name);
    ESP_LOGI(TAG, "setting cod major, peripheral");
    esp_bt_cod_t cod;
    cod.major = ESP_BT_COD_MAJOR_DEV_PERIPHERAL;
    esp_bt_gap_set_cod(cod, ESP_BT_SET_COD_MAJOR_MINOR);
    vTaskDelay(1000 / portTICK_PERIOD_MS);
    ESP_LOGI(TAG, "setting bt device");
    ESP_ERROR_CHECK(
        esp_hidd_dev_init(&bt_hid_config, ESP_HID_TRANSPORT_BT, bt_hidd_event_callback, &s_bt_hid_param.hid_dev));
#endif
}