25281ef4de
- Adds HID Host support in Buedroid - Adds BLE HID Host and Device support - Adds some general HID utilities and definitions to help integrate with other stacks and native USB
134 lines
5.1 KiB
C
134 lines
5.1 KiB
C
/* This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this software is
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distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/event_groups.h"
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#include "esp_system.h"
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#include "esp_wifi.h"
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#include "esp_event.h"
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#include "esp_log.h"
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#include "nvs_flash.h"
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#include "esp_bt.h"
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#include "esp_bt_defs.h"
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#include "esp_gap_ble_api.h"
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#include "esp_gatts_api.h"
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#include "esp_gatt_defs.h"
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#include "esp_bt_main.h"
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#include "esp_bt_device.h"
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#include "esp_hidh.h"
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#include "esp_hid_gap.h"
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static const char *TAG = "ESP_HIDH_DEMO";
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void hidh_callback(void *handler_args, esp_event_base_t base, int32_t id, void *event_data)
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{
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esp_hidh_event_t event = (esp_hidh_event_t)id;
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esp_hidh_event_data_t *param = (esp_hidh_event_data_t *)event_data;
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switch (event) {
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case ESP_HIDH_OPEN_EVENT: {
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const uint8_t *bda = esp_hidh_dev_bda_get(param->open.dev);
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ESP_LOGI(TAG, ESP_BD_ADDR_STR " OPEN: %s", ESP_BD_ADDR_HEX(bda), esp_hidh_dev_name_get(param->open.dev));
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esp_hidh_dev_dump(param->open.dev, stdout);
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break;
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}
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case ESP_HIDH_BATTERY_EVENT: {
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const uint8_t *bda = esp_hidh_dev_bda_get(param->battery.dev);
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ESP_LOGI(TAG, ESP_BD_ADDR_STR " BATTERY: %d%%", ESP_BD_ADDR_HEX(bda), param->battery.level);
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break;
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}
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case ESP_HIDH_INPUT_EVENT: {
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const uint8_t *bda = esp_hidh_dev_bda_get(param->input.dev);
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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);
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ESP_LOG_BUFFER_HEX(TAG, param->input.data, param->input.length);
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break;
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}
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case ESP_HIDH_FEATURE_EVENT: {
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const uint8_t *bda = esp_hidh_dev_bda_get(param->feature.dev);
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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);
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ESP_LOG_BUFFER_HEX(TAG, param->feature.data, param->feature.length);
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break;
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}
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case ESP_HIDH_CLOSE_EVENT: {
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const uint8_t *bda = esp_hidh_dev_bda_get(param->close.dev);
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ESP_LOGI(TAG, ESP_BD_ADDR_STR " CLOSE: '%s' %s", ESP_BD_ADDR_HEX(bda), esp_hidh_dev_name_get(param->close.dev), esp_hid_disconnect_reason_str(esp_hidh_dev_transport_get(param->close.dev), param->close.reason));
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//MUST call this function to free all allocated memory by this device
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esp_hidh_dev_free(param->close.dev);
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break;
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}
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default:
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ESP_LOGI(TAG, "EVENT: %d", event);
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break;
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}
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}
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#define SCAN_DURATION_SECONDS 5
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void hid_demo_task(void *pvParameters)
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{
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size_t results_len = 0;
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esp_hid_scan_result_t *results = NULL;
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ESP_LOGI(TAG, "SCAN...");
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//start scan for HID devices
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esp_hid_scan(SCAN_DURATION_SECONDS, &results_len, &results);
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ESP_LOGI(TAG, "SCAN: %u results", results_len);
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if (results_len) {
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esp_hid_scan_result_t *r = results;
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esp_hid_scan_result_t *cr = NULL;
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while (r) {
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printf(" %s: " ESP_BD_ADDR_STR ", ", (r->transport == ESP_HID_TRANSPORT_BLE) ? "BLE" : "BT ", ESP_BD_ADDR_HEX(r->bda));
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printf("RSSI: %d, ", r->rssi);
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printf("USAGE: %s, ", esp_hid_usage_str(r->usage));
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if (r->transport == ESP_HID_TRANSPORT_BLE) {
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cr = r;
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printf("APPEARANCE: 0x%04x, ", r->ble.appearance);
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printf("ADDR_TYPE: '%s', ", ble_addr_type_str(r->ble.addr_type));
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} else {
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cr = r;
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printf("COD: %s[", esp_hid_cod_major_str(r->bt.cod.major));
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esp_hid_cod_minor_print(r->bt.cod.minor, stdout);
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printf("] srv 0x%03x, ", r->bt.cod.service);
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print_uuid(&r->bt.uuid);
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printf(", ");
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}
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printf("NAME: %s ", r->name ? r->name : "");
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printf("\n");
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r = r->next;
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}
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if (cr) {
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//open the last result
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esp_hidh_dev_open(cr->bda, cr->transport, cr->ble.addr_type);
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}
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//free the results
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esp_hid_scan_results_free(results);
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}
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vTaskDelete(NULL);
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}
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void app_main(void)
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{
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esp_err_t ret;
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ret = nvs_flash_init();
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if (ret == ESP_ERR_NVS_NO_FREE_PAGES || ret == ESP_ERR_NVS_NEW_VERSION_FOUND) {
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ESP_ERROR_CHECK(nvs_flash_erase());
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ret = nvs_flash_init();
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}
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ESP_ERROR_CHECK( ret );
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ESP_ERROR_CHECK( esp_hid_gap_init(ESP_BT_MODE_BTDM) );
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ESP_ERROR_CHECK( esp_ble_gattc_register_callback(esp_hidh_gattc_event_handler) );
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esp_hidh_config_t config = {
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.callback = hidh_callback,
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};
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ESP_ERROR_CHECK( esp_hidh_init(&config) );
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xTaskCreate(&hid_demo_task, "hid_task", 6 * 1024, NULL, 2, NULL);
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}
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