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/*
* SPDX-FileCopyrightText: 2021-2024 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"
#if CONFIG_BT_NIMBLE_ENABLED
#include "host/ble_hs.h"
#include "nimble/nimble_port.h"
#include "nimble/nimble_port_freertos.h"
#else
#include "esp_bt_defs.h"
#include "esp_gap_ble_api.h"
#include "esp_gatts_api.h"
#include "esp_gatt_defs.h"
#include "esp_bt_main.h"
#include "esp_bt_device.h"
#endif
#if CONFIG_BT_NIMBLE_ENABLED
#include "host/ble_hs.h"
#include "nimble/nimble_port.h"
#include "nimble/nimble_port_freertos.h"
#define ESP_BD_ADDR_STR "%02x:%02x:%02x:%02x:%02x:%02x"
#define ESP_BD_ADDR_HEX(addr) addr[0], addr[1], addr[2], addr[3], addr[4], addr[5]
#else
#include "esp_bt_defs.h"
#include "esp_gap_ble_api.h"
#include "esp_gatts_api.h"
#include "esp_gatt_defs.h"
#include "esp_bt_main.h"
#include "esp_bt_device.h"
#endif
#include "esp_hidh.h"
#include "esp_hid_gap.h"
static const char *TAG = "ESP_HIDH_DEMO";
#if CONFIG_BT_HID_HOST_ENABLED
static const char * remote_device_name = CONFIG_EXAMPLE_PEER_DEVICE_NAME;
#endif // CONFIG_BT_HID_HOST_ENABLED
#if !CONFIG_BT_NIMBLE_ENABLED
static char *bda2str(uint8_t *bda, char *str, size_t size)
{
if (bda == NULL || str == NULL || size < 18) {
return NULL;
}
uint8_t *p = bda;
sprintf(str, "%02x:%02x:%02x:%02x:%02x:%02x",
p[0], p[1], p[2], p[3], p[4], p[5]);
return str;
}
#endif
void hidh_callback(void *handler_args, esp_event_base_t base, int32_t id, void *event_data)
{
esp_hidh_event_t event = (esp_hidh_event_t)id;
esp_hidh_event_data_t *param = (esp_hidh_event_data_t *)event_data;
switch (event) {
case ESP_HIDH_OPEN_EVENT: {
if (param->open.status == ESP_OK) {
const uint8_t *bda = esp_hidh_dev_bda_get(param->open.dev);
if (bda) {
ESP_LOGI(TAG, ESP_BD_ADDR_STR " OPEN: %s", ESP_BD_ADDR_HEX(bda), esp_hidh_dev_name_get(param->open.dev));
esp_hidh_dev_dump(param->open.dev, stdout);
}
} else {
ESP_LOGE(TAG, " OPEN failed!");
}
break;
}
case ESP_HIDH_BATTERY_EVENT: {
const uint8_t *bda = esp_hidh_dev_bda_get(param->battery.dev);
if (bda) {
ESP_LOGI(TAG, ESP_BD_ADDR_STR " BATTERY: %d%%", ESP_BD_ADDR_HEX(bda), param->battery.level);
}
break;
}
case ESP_HIDH_INPUT_EVENT: {
const uint8_t *bda = esp_hidh_dev_bda_get(param->input.dev);
if (bda) {
ESP_LOGI(TAG, ESP_BD_ADDR_STR " INPUT: %8s, MAP: %2u, ID: %3u, Len: %d, Data:", ESP_BD_ADDR_HEX(bda), esp_hid_usage_str(param->input.usage), param->input.map_index, param->input.report_id, param->input.length);
ESP_LOG_BUFFER_HEX(TAG, param->input.data, param->input.length);
}
break;
}
case ESP_HIDH_FEATURE_EVENT: {
const uint8_t *bda = esp_hidh_dev_bda_get(param->feature.dev);
if (bda) {
ESP_LOGI(TAG, ESP_BD_ADDR_STR " FEATURE: %8s, MAP: %2u, ID: %3u, Len: %d", ESP_BD_ADDR_HEX(bda),
esp_hid_usage_str(param->feature.usage), param->feature.map_index, param->feature.report_id,
param->feature.length);
ESP_LOG_BUFFER_HEX(TAG, param->feature.data, param->feature.length);
}
break;
}
case ESP_HIDH_CLOSE_EVENT: {
const uint8_t *bda = esp_hidh_dev_bda_get(param->close.dev);
if (bda) {
ESP_LOGI(TAG, ESP_BD_ADDR_STR " CLOSE: %s", ESP_BD_ADDR_HEX(bda), esp_hidh_dev_name_get(param->close.dev));
}
break;
}
default:
ESP_LOGI(TAG, "EVENT: %d", event);
break;
}
}
#define SCAN_DURATION_SECONDS 5
void hid_demo_task(void *pvParameters)
{
size_t results_len = 0;
esp_hid_scan_result_t *results = NULL;
ESP_LOGI(TAG, "SCAN...");
//start scan for HID devices
esp_hid_scan(SCAN_DURATION_SECONDS, &results_len, &results);
ESP_LOGI(TAG, "SCAN: %u results", results_len);
if (results_len) {
esp_hid_scan_result_t *r = results;
esp_hid_scan_result_t *cr = NULL;
while (r) {
printf(" %s: " ESP_BD_ADDR_STR ", ", (r->transport == ESP_HID_TRANSPORT_BLE) ? "BLE" : "BT ", ESP_BD_ADDR_HEX(r->bda));
printf("RSSI: %d, ", r->rssi);
printf("USAGE: %s, ", esp_hid_usage_str(r->usage));
#if CONFIG_BT_BLE_ENABLED
if (r->transport == ESP_HID_TRANSPORT_BLE) {
cr = r;
printf("APPEARANCE: 0x%04x, ", r->ble.appearance);
printf("ADDR_TYPE: '%s', ", ble_addr_type_str(r->ble.addr_type));
}
#endif /* CONFIG_BT_BLE_ENABLED */
#if CONFIG_BT_NIMBLE_ENABLED
if (r->transport == ESP_HID_TRANSPORT_BLE) {
cr = r;
printf("APPEARANCE: 0x%04x, ", r->ble.appearance);
printf("ADDR_TYPE: '%d', ", r->ble.addr_type);
}
#endif /* CONFIG_BT_BLE_ENABLED */
#if CONFIG_BT_HID_HOST_ENABLED
if (r->transport == ESP_HID_TRANSPORT_BT) {
cr = r;
printf("COD: %s[", esp_hid_cod_major_str(r->bt.cod.major));
esp_hid_cod_minor_print(r->bt.cod.minor, stdout);
printf("] srv 0x%03x, ", r->bt.cod.service);
print_uuid(&r->bt.uuid);
printf(", ");
if (strncmp(r->name, remote_device_name, strlen(remote_device_name)) == 0) {
break;
}
}
#endif /* CONFIG_BT_HID_HOST_ENABLED */
printf("NAME: %s ", r->name ? r->name : "");
printf("\n");
r = r->next;
}
#if CONFIG_BT_HID_HOST_ENABLED
if (cr && strncmp(cr->name, remote_device_name, strlen(remote_device_name)) == 0) {
esp_hidh_dev_open(cr->bda, cr->transport, cr->ble.addr_type);
}
#else
if (cr) {
//open the last result
esp_hidh_dev_open(cr->bda, cr->transport, cr->ble.addr_type);
}
#endif // CONFIG_BT_HID_HOST_ENABLED
//free the results
esp_hid_scan_results_free(results);
}
vTaskDelete(NULL);
}
#if CONFIG_BT_NIMBLE_ENABLED
void ble_hid_host_task(void *param)
{
ESP_LOGI(TAG, "BLE Host Task Started");
/* This function will return only when nimble_port_stop() is executed */
nimble_port_run();
nimble_port_freertos_deinit();
}
void ble_store_config_init(void);
#endif
void app_main(void)
{
esp_err_t ret;
#if HID_HOST_MODE == HIDH_IDLE_MODE
ESP_LOGE(TAG, "Please turn on BT HID host 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_HOST_MODE);
ESP_ERROR_CHECK( esp_hid_gap_init(HID_HOST_MODE) );
#if CONFIG_BT_BLE_ENABLED
ESP_ERROR_CHECK( esp_ble_gattc_register_callback(esp_hidh_gattc_event_handler) );
#endif /* CONFIG_BT_BLE_ENABLED */
esp_hidh_config_t config = {
.callback = hidh_callback,
.event_stack_size = 4096,
.callback_arg = NULL,
};
ESP_ERROR_CHECK( esp_hidh_init(&config) );
#if !CONFIG_BT_NIMBLE_ENABLED
char bda_str[18] = {0};
ESP_LOGI(TAG, "Own address:[%s]", bda2str((uint8_t *)esp_bt_dev_get_address(), bda_str, sizeof(bda_str)));
#endif
#if CONFIG_BT_NIMBLE_ENABLED
/* XXX Need to have template for store */
ble_store_config_init();
ble_hs_cfg.store_status_cb = ble_store_util_status_rr;
/* Starting nimble task after gatts is initialized*/
ret = esp_nimble_enable(ble_hid_host_task);
if (ret) {
ESP_LOGE(TAG, "esp_nimble_enable failed: %d", ret);
}
vTaskDelay(200);
uint8_t own_addr_type = 0;
int rc;
uint8_t addr_val[6] = {0};
rc = ble_hs_id_copy_addr(BLE_ADDR_PUBLIC, NULL, NULL);
rc = ble_hs_id_infer_auto(0, &own_addr_type);
if (rc != 0) {
ESP_LOGI(TAG, "error determining address type; rc=%d\n", rc);
return;
}
rc = ble_hs_id_copy_addr(own_addr_type, addr_val, NULL);
ESP_LOGI(TAG, "Device Address: ");
ESP_LOGI(TAG, "%02x:%02x:%02x:%02x:%02x:%02x \n", addr_val[5], addr_val[4], addr_val[3],
addr_val[2], addr_val[1], addr_val[0]);
#endif
xTaskCreate(&hid_demo_task, "hid_task", 6 * 1024, NULL, 2, NULL);
}
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