// Copyright 2017-2019 Espressif Systems (Shanghai) PTE LTD // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. // See the License for the specific language governing permissions and // limitations under the License. #include #include #include "freertos/FreeRTOS.h" #include "freertos/task.h" #include "freertos/semphr.h" #include "esp_hid_gap.h" static const char *TAG = "ESP_HID_GAP"; // uncomment to print all devices that were seen during a scan #define GAP_DBG_PRINTF(...) //printf(__VA_ARGS__) //static const char * gap_bt_prop_type_names[5] = {"","BDNAME","COD","RSSI","EIR"}; static esp_hid_scan_result_t *bt_scan_results = NULL; static size_t num_bt_scan_results = 0; static esp_hid_scan_result_t *ble_scan_results = NULL; static size_t num_ble_scan_results = 0; static xSemaphoreHandle bt_hidh_cb_semaphore = NULL; #define WAIT_BT_CB() xSemaphoreTake(bt_hidh_cb_semaphore, portMAX_DELAY) #define SEND_BT_CB() xSemaphoreGive(bt_hidh_cb_semaphore) static xSemaphoreHandle ble_hidh_cb_semaphore = NULL; #define WAIT_BLE_CB() xSemaphoreTake(ble_hidh_cb_semaphore, portMAX_DELAY) #define SEND_BLE_CB() xSemaphoreGive(ble_hidh_cb_semaphore) #define SIZEOF_ARRAY(a) (sizeof(a)/sizeof(*a)) static const char *ble_gap_evt_names[] = { "ADV_DATA_SET_COMPLETE", "SCAN_RSP_DATA_SET_COMPLETE", "SCAN_PARAM_SET_COMPLETE", "SCAN_RESULT", "ADV_DATA_RAW_SET_COMPLETE", "SCAN_RSP_DATA_RAW_SET_COMPLETE", "ADV_START_COMPLETE", "SCAN_START_COMPLETE", "AUTH_CMPL", "KEY", "SEC_REQ", "PASSKEY_NOTIF", "PASSKEY_REQ", "OOB_REQ", "LOCAL_IR", "LOCAL_ER", "NC_REQ", "ADV_STOP_COMPLETE", "SCAN_STOP_COMPLETE", "SET_STATIC_RAND_ADDR", "UPDATE_CONN_PARAMS", "SET_PKT_LENGTH_COMPLETE", "SET_LOCAL_PRIVACY_COMPLETE", "REMOVE_BOND_DEV_COMPLETE", "CLEAR_BOND_DEV_COMPLETE", "GET_BOND_DEV_COMPLETE", "READ_RSSI_COMPLETE", "UPDATE_WHITELIST_COMPLETE"}; static const char *bt_gap_evt_names[] = { "DISC_RES", "DISC_STATE_CHANGED", "RMT_SRVCS", "RMT_SRVC_REC", "AUTH_CMPL", "PIN_REQ", "CFM_REQ", "KEY_NOTIF", "KEY_REQ", "READ_RSSI_DELTA"}; static const char *ble_addr_type_names[] = {"PUBLIC", "RANDOM", "RPA_PUBLIC", "RPA_RANDOM"}; const char *ble_addr_type_str(esp_ble_addr_type_t ble_addr_type) { if (ble_addr_type > BLE_ADDR_TYPE_RPA_RANDOM) { return "UNKNOWN"; } return ble_addr_type_names[ble_addr_type]; } const char *ble_gap_evt_str(uint8_t event) { if (event >= SIZEOF_ARRAY(ble_gap_evt_names)) { return "UNKNOWN"; } return ble_gap_evt_names[event]; } const char *bt_gap_evt_str(uint8_t event) { if (event >= SIZEOF_ARRAY(bt_gap_evt_names)) { return "UNKNOWN"; } return bt_gap_evt_names[event]; } const char *esp_ble_key_type_str(esp_ble_key_type_t key_type) { const char *key_str = NULL; switch (key_type) { case ESP_LE_KEY_NONE: key_str = "ESP_LE_KEY_NONE"; break; case ESP_LE_KEY_PENC: key_str = "ESP_LE_KEY_PENC"; break; case ESP_LE_KEY_PID: key_str = "ESP_LE_KEY_PID"; break; case ESP_LE_KEY_PCSRK: key_str = "ESP_LE_KEY_PCSRK"; break; case ESP_LE_KEY_PLK: key_str = "ESP_LE_KEY_PLK"; break; case ESP_LE_KEY_LLK: key_str = "ESP_LE_KEY_LLK"; break; case ESP_LE_KEY_LENC: key_str = "ESP_LE_KEY_LENC"; break; case ESP_LE_KEY_LID: key_str = "ESP_LE_KEY_LID"; break; case ESP_LE_KEY_LCSRK: key_str = "ESP_LE_KEY_LCSRK"; break; default: key_str = "INVALID BLE KEY TYPE"; break; } return key_str; } void esp_hid_scan_results_free(esp_hid_scan_result_t *results) { esp_hid_scan_result_t *r = NULL; while (results) { r = results; results = results->next; if (r->name != NULL) { free((char *)r->name); } free(r); } } static esp_hid_scan_result_t *find_scan_result(esp_bd_addr_t bda, esp_hid_scan_result_t *results) { esp_hid_scan_result_t *r = results; while (r) { if (memcmp(bda, r->bda, sizeof(esp_bd_addr_t)) == 0) { return r; } r = r->next; } return NULL; } #if CONFIG_BT_CLASSIC_ENABLED static void add_bt_scan_result(esp_bd_addr_t bda, esp_bt_cod_t *cod, esp_bt_uuid_t *uuid, uint8_t *name, uint8_t name_len, int rssi) { esp_hid_scan_result_t *r = find_scan_result(bda, bt_scan_results); if (r) { //Some info may come later if (r->name == NULL && name && name_len) { char *name_s = (char *)malloc(name_len + 1); if (name_s == NULL) { ESP_LOGE(TAG, "Malloc result name failed!"); return; } memcpy(name_s, name, name_len); name_s[name_len] = 0; r->name = (const char *)name_s; } if (r->bt.uuid.len == 0 && uuid->len) { memcpy(&r->bt.uuid, uuid, sizeof(esp_bt_uuid_t)); } if (rssi != 0) { r->rssi = rssi; } return; } r = (esp_hid_scan_result_t *)malloc(sizeof(esp_hid_scan_result_t)); if (r == NULL) { ESP_LOGE(TAG, "Malloc bt_hidh_scan_result_t failed!"); return; } r->transport = ESP_HID_TRANSPORT_BT; memcpy(r->bda, bda, sizeof(esp_bd_addr_t)); memcpy(&r->bt.cod, cod, sizeof(esp_bt_cod_t)); memcpy(&r->bt.uuid, uuid, sizeof(esp_bt_uuid_t)); r->usage = esp_hid_usage_from_cod((uint32_t)cod); r->rssi = rssi; r->name = NULL; if (name_len && name) { char *name_s = (char *)malloc(name_len + 1); if (name_s == NULL) { free(r); ESP_LOGE(TAG, "Malloc result name failed!"); return; } memcpy(name_s, name, name_len); name_s[name_len] = 0; r->name = (const char *)name_s; } r->next = bt_scan_results; bt_scan_results = r; num_bt_scan_results++; } #endif static void add_ble_scan_result(esp_bd_addr_t bda, esp_ble_addr_type_t addr_type, uint16_t appearance, uint8_t *name, uint8_t name_len, int rssi) { if (find_scan_result(bda, ble_scan_results)) { ESP_LOGW(TAG, "Result already exists!"); return; } esp_hid_scan_result_t *r = (esp_hid_scan_result_t *)malloc(sizeof(esp_hid_scan_result_t)); if (r == NULL) { ESP_LOGE(TAG, "Malloc ble_hidh_scan_result_t failed!"); return; } r->transport = ESP_HID_TRANSPORT_BLE; memcpy(r->bda, bda, sizeof(esp_bd_addr_t)); r->ble.appearance = appearance; r->ble.addr_type = addr_type; r->usage = esp_hid_usage_from_appearance(appearance); r->rssi = rssi; r->name = NULL; if (name_len && name) { char *name_s = (char *)malloc(name_len + 1); if (name_s == NULL) { free(r); ESP_LOGE(TAG, "Malloc result name failed!"); return; } memcpy(name_s, name, name_len); name_s[name_len] = 0; r->name = (const char *)name_s; } r->next = ble_scan_results; ble_scan_results = r; num_ble_scan_results++; } void print_uuid(esp_bt_uuid_t *uuid) { if (uuid->len == ESP_UUID_LEN_16) { GAP_DBG_PRINTF("UUID16: 0x%04x", uuid->uuid.uuid16); } else if (uuid->len == ESP_UUID_LEN_32) { GAP_DBG_PRINTF("UUID32: 0x%08x", uuid->uuid.uuid32); } else if (uuid->len == ESP_UUID_LEN_128) { GAP_DBG_PRINTF("UUID128: %02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x,%02x", uuid->uuid.uuid128[0], uuid->uuid.uuid128[1], uuid->uuid.uuid128[2], uuid->uuid.uuid128[3], uuid->uuid.uuid128[4], uuid->uuid.uuid128[5], uuid->uuid.uuid128[6], uuid->uuid.uuid128[7], uuid->uuid.uuid128[8], uuid->uuid.uuid128[9], uuid->uuid.uuid128[10], uuid->uuid.uuid128[11], uuid->uuid.uuid128[12], uuid->uuid.uuid128[13], uuid->uuid.uuid128[14], uuid->uuid.uuid128[15]); } } #if CONFIG_BT_CLASSIC_ENABLED static void handle_bt_device_result(struct disc_res_param *disc_res) { GAP_DBG_PRINTF("BT : " ESP_BD_ADDR_STR, ESP_BD_ADDR_HEX(disc_res->bda)); uint32_t codv = 0; esp_bt_cod_t *cod = (esp_bt_cod_t *)&codv; int8_t rssi = 0; uint8_t *name = NULL; uint8_t name_len = 0; esp_bt_uuid_t uuid; uuid.len = ESP_UUID_LEN_16; uuid.uuid.uuid16 = 0; for (int i = 0; i < disc_res->num_prop; i++) { esp_bt_gap_dev_prop_t *prop = &disc_res->prop[i]; if (prop->type != ESP_BT_GAP_DEV_PROP_EIR) { GAP_DBG_PRINTF(", %s: ", gap_bt_prop_type_names[prop->type]); } if (prop->type == ESP_BT_GAP_DEV_PROP_BDNAME) { name = (uint8_t *)prop->val; name_len = strlen((const char *)name); GAP_DBG_PRINTF("%s", (const char *)name); } else if (prop->type == ESP_BT_GAP_DEV_PROP_RSSI) { rssi = *((int8_t *)prop->val); GAP_DBG_PRINTF("%d", rssi); } else if (prop->type == ESP_BT_GAP_DEV_PROP_COD) { memcpy(&codv, prop->val, sizeof(uint32_t)); GAP_DBG_PRINTF("major: %s, minor: %d, service: 0x%03x", esp_hid_cod_major_str(cod->major), cod->minor, cod->service); } else if (prop->type == ESP_BT_GAP_DEV_PROP_EIR) { uint8_t len = 0; uint8_t *data = 0; data = esp_bt_gap_resolve_eir_data((uint8_t *)prop->val, ESP_BT_EIR_TYPE_CMPL_16BITS_UUID, &len); if (data == NULL) { data = esp_bt_gap_resolve_eir_data((uint8_t *)prop->val, ESP_BT_EIR_TYPE_INCMPL_16BITS_UUID, &len); } if (data && len == ESP_UUID_LEN_16) { uuid.len = ESP_UUID_LEN_16; uuid.uuid.uuid16 = data[0] + (data[1] << 8); GAP_DBG_PRINTF(", "); print_uuid(&uuid); continue; } data = esp_bt_gap_resolve_eir_data((uint8_t *)prop->val, ESP_BT_EIR_TYPE_CMPL_32BITS_UUID, &len); if (data == NULL) { data = esp_bt_gap_resolve_eir_data((uint8_t *)prop->val, ESP_BT_EIR_TYPE_INCMPL_32BITS_UUID, &len); } if (data && len == ESP_UUID_LEN_32) { uuid.len = len; memcpy(&uuid.uuid.uuid32, data, sizeof(uint32_t)); GAP_DBG_PRINTF(", "); print_uuid(&uuid); continue; } data = esp_bt_gap_resolve_eir_data((uint8_t *)prop->val, ESP_BT_EIR_TYPE_CMPL_128BITS_UUID, &len); if (data == NULL) { data = esp_bt_gap_resolve_eir_data((uint8_t *)prop->val, ESP_BT_EIR_TYPE_INCMPL_128BITS_UUID, &len); } if (data && len == ESP_UUID_LEN_128) { uuid.len = len; memcpy(uuid.uuid.uuid128, (uint8_t *)data, len); GAP_DBG_PRINTF(", "); print_uuid(&uuid); continue; } //try to find a name if (name == NULL) { data = esp_bt_gap_resolve_eir_data((uint8_t *)prop->val, ESP_BT_EIR_TYPE_CMPL_LOCAL_NAME, &len); if (data == NULL) { data = esp_bt_gap_resolve_eir_data((uint8_t *)prop->val, ESP_BT_EIR_TYPE_SHORT_LOCAL_NAME, &len); } if (data && len) { name = data; name_len = len; GAP_DBG_PRINTF(", NAME: "); for (int x = 0; x < len; x++) { GAP_DBG_PRINTF("%c", (char)data[x]); } } } } } GAP_DBG_PRINTF("\n"); if (cod->major == ESP_BT_COD_MAJOR_DEV_PERIPHERAL || (find_scan_result(disc_res->bda, bt_scan_results) != NULL)) { add_bt_scan_result(disc_res->bda, cod, &uuid, name, name_len, rssi); } } #endif static void handle_ble_device_result(struct ble_scan_result_evt_param *scan_rst) { uint16_t uuid = 0; uint16_t appearance = 0; char name[64] = {0}; uint8_t uuid_len = 0; uint8_t *uuid_d = esp_ble_resolve_adv_data(scan_rst->ble_adv, ESP_BLE_AD_TYPE_16SRV_CMPL, &uuid_len); if (uuid_d != NULL && uuid_len) { uuid = uuid_d[0] + (uuid_d[1] << 8); } uint8_t appearance_len = 0; uint8_t *appearance_d = esp_ble_resolve_adv_data(scan_rst->ble_adv, ESP_BLE_AD_TYPE_APPEARANCE, &appearance_len); if (appearance_d != NULL && appearance_len) { appearance = appearance_d[0] + (appearance_d[1] << 8); } uint8_t adv_name_len = 0; uint8_t *adv_name = esp_ble_resolve_adv_data(scan_rst->ble_adv, ESP_BLE_AD_TYPE_NAME_CMPL, &adv_name_len); if (adv_name == NULL) { adv_name = esp_ble_resolve_adv_data(scan_rst->ble_adv, ESP_BLE_AD_TYPE_NAME_SHORT, &adv_name_len); } if (adv_name != NULL && adv_name_len) { memcpy(name, adv_name, adv_name_len); name[adv_name_len] = 0; } GAP_DBG_PRINTF("BLE: " ESP_BD_ADDR_STR ", ", ESP_BD_ADDR_HEX(scan_rst->bda)); GAP_DBG_PRINTF("RSSI: %d, ", scan_rst->rssi); GAP_DBG_PRINTF("UUID: 0x%04x, ", uuid); GAP_DBG_PRINTF("APPEARANCE: 0x%04x, ", appearance); GAP_DBG_PRINTF("ADDR_TYPE: '%s'", ble_addr_type_str(scan_rst->ble_addr_type)); if (adv_name_len) { GAP_DBG_PRINTF(", NAME: '%s'", name); } GAP_DBG_PRINTF("\n"); if (uuid == ESP_GATT_UUID_HID_SVC) { add_ble_scan_result(scan_rst->bda, scan_rst->ble_addr_type, appearance, adv_name, adv_name_len, scan_rst->rssi); } } #if CONFIG_BT_CLASSIC_ENABLED /* * BT GAP * */ static void bt_gap_event_handler(esp_bt_gap_cb_event_t event, esp_bt_gap_cb_param_t *param) { switch (event) { case ESP_BT_GAP_DISC_STATE_CHANGED_EVT: { ESP_LOGV(TAG, "BT GAP DISC_STATE %s", (param->disc_st_chg.state == ESP_BT_GAP_DISCOVERY_STARTED) ? "START" : "STOP"); if (param->disc_st_chg.state == ESP_BT_GAP_DISCOVERY_STOPPED) { SEND_BT_CB(); } break; } case ESP_BT_GAP_DISC_RES_EVT: { handle_bt_device_result(¶m->disc_res); break; } #if (CONFIG_BT_SSP_ENABLED) case ESP_BT_GAP_KEY_NOTIF_EVT: ESP_LOGI(TAG, "BT GAP KEY_NOTIF passkey:%d", param->key_notif.passkey); break; case ESP_BT_GAP_CFM_REQ_EVT: { ESP_LOGI(TAG, "ESP_BT_GAP_CFM_REQ_EVT Please compare the numeric value: %d", param->cfm_req.num_val); esp_bt_gap_ssp_confirm_reply(param->cfm_req.bda, true); break; } #endif case ESP_BT_GAP_PIN_REQ_EVT: { ESP_LOGI(TAG, "ESP_BT_GAP_PIN_REQ_EVT min_16_digit:%d", param->pin_req.min_16_digit); if (param->pin_req.min_16_digit) { ESP_LOGI(TAG, "Input pin code: 0000 0000 0000 0000"); esp_bt_pin_code_t pin_code = {0}; esp_bt_gap_pin_reply(param->pin_req.bda, true, 16, pin_code); } else { ESP_LOGI(TAG, "Input pin code: 1234"); esp_bt_pin_code_t pin_code; pin_code[0] = '1'; pin_code[1] = '2'; pin_code[2] = '3'; pin_code[3] = '4'; esp_bt_gap_pin_reply(param->pin_req.bda, true, 4, pin_code); } break; } default: ESP_LOGW(TAG, "BT GAP EVENT %s", bt_gap_evt_str(event)); break; } } static esp_err_t init_bt_gap(void) { esp_err_t ret; #if (CONFIG_BT_SSP_ENABLED) /* Set default parameters for Secure Simple Pairing */ esp_bt_sp_param_t param_type = ESP_BT_SP_IOCAP_MODE; esp_bt_io_cap_t iocap = ESP_BT_IO_CAP_IO; esp_bt_gap_set_security_param(param_type, &iocap, sizeof(uint8_t)); #endif /* * Set default parameters for Legacy Pairing * Use variable pin, input pin code when pairing */ esp_bt_pin_type_t pin_type = ESP_BT_PIN_TYPE_VARIABLE; esp_bt_pin_code_t pin_code; esp_bt_gap_set_pin(pin_type, 0, pin_code); if ((ret = esp_bt_gap_register_callback(bt_gap_event_handler)) != ESP_OK) { ESP_LOGE(TAG, "esp_bt_gap_register_callback failed: %d", ret); return ret; } // Allow BT devices to connect back to us if ((ret = esp_bt_gap_set_scan_mode(ESP_BT_CONNECTABLE, ESP_BT_NON_DISCOVERABLE)) != ESP_OK) { ESP_LOGE(TAG, "esp_bt_gap_set_scan_mode failed: %d", ret); return ret; } return ret; } static esp_err_t start_bt_scan(uint32_t seconds) { esp_err_t ret = ESP_OK; if ((ret = esp_bt_gap_start_discovery(ESP_BT_INQ_MODE_GENERAL_INQUIRY, (int)(seconds / 1.28), 0)) != ESP_OK) { ESP_LOGE(TAG, "esp_bt_gap_start_discovery failed: %d", ret); return ret; } return ret; } #endif /* * BLE GAP * */ static void ble_gap_event_handler(esp_gap_ble_cb_event_t event, esp_ble_gap_cb_param_t *param) { switch (event) { /* * SCAN * */ case ESP_GAP_BLE_SCAN_PARAM_SET_COMPLETE_EVT: { ESP_LOGV(TAG, "BLE GAP EVENT SCAN_PARAM_SET_COMPLETE"); SEND_BLE_CB(); break; } case ESP_GAP_BLE_SCAN_RESULT_EVT: { esp_ble_gap_cb_param_t *scan_result = (esp_ble_gap_cb_param_t *)param; switch (scan_result->scan_rst.search_evt) { case ESP_GAP_SEARCH_INQ_RES_EVT: { handle_ble_device_result(&scan_result->scan_rst); break; } case ESP_GAP_SEARCH_INQ_CMPL_EVT: ESP_LOGV(TAG, "BLE GAP EVENT SCAN DONE: %d", scan_result->scan_rst.num_resps); SEND_BLE_CB(); break; default: break; } break; } case ESP_GAP_BLE_SCAN_STOP_COMPLETE_EVT: { ESP_LOGV(TAG, "BLE GAP EVENT SCAN CANCELED"); break; } /* * ADVERTISEMENT * */ case ESP_GAP_BLE_ADV_DATA_SET_COMPLETE_EVT: ESP_LOGV(TAG, "BLE GAP ADV_DATA_SET_COMPLETE"); break; case ESP_GAP_BLE_ADV_START_COMPLETE_EVT: ESP_LOGV(TAG, "BLE GAP ADV_START_COMPLETE"); break; /* * AUTHENTICATION * */ case ESP_GAP_BLE_AUTH_CMPL_EVT: if (!param->ble_security.auth_cmpl.success) { ESP_LOGE(TAG, "BLE GAP AUTH ERROR: 0x%x", param->ble_security.auth_cmpl.fail_reason); } else { ESP_LOGI(TAG, "BLE GAP AUTH SUCCESS"); } break; case ESP_GAP_BLE_KEY_EVT: //shows the ble key info share with peer device to the user. ESP_LOGI(TAG, "BLE GAP KEY type = %s", esp_ble_key_type_str(param->ble_security.ble_key.key_type)); break; case ESP_GAP_BLE_PASSKEY_NOTIF_EVT: // ESP_IO_CAP_OUT // The app will receive this evt when the IO has Output capability and the peer device IO has Input capability. // Show the passkey number to the user to input it in the peer device. ESP_LOGI(TAG, "BLE GAP PASSKEY_NOTIF passkey:%d", param->ble_security.key_notif.passkey); break; case ESP_GAP_BLE_NC_REQ_EVT: // ESP_IO_CAP_IO // The app will receive this event when the IO has DisplayYesNO capability and the peer device IO also has DisplayYesNo capability. // show the passkey number to the user to confirm it with the number displayed by peer device. ESP_LOGI(TAG, "BLE GAP NC_REQ passkey:%d", param->ble_security.key_notif.passkey); esp_ble_confirm_reply(param->ble_security.key_notif.bd_addr, true); break; case ESP_GAP_BLE_PASSKEY_REQ_EVT: // ESP_IO_CAP_IN // The app will receive this evt when the IO has Input capability and the peer device IO has Output capability. // See the passkey number on the peer device and send it back. ESP_LOGI(TAG, "BLE GAP PASSKEY_REQ"); //esp_ble_passkey_reply(param->ble_security.ble_req.bd_addr, true, 1234); break; case ESP_GAP_BLE_SEC_REQ_EVT: ESP_LOGI(TAG, "BLE GAP SEC_REQ"); // Send the positive(true) security response to the peer device to accept the security request. // If not accept the security request, should send the security response with negative(false) accept value. esp_ble_gap_security_rsp(param->ble_security.ble_req.bd_addr, true); break; default: ESP_LOGV(TAG, "BLE GAP EVENT %s", ble_gap_evt_str(event)); break; } } static esp_err_t init_ble_gap(void) { esp_err_t ret; if ((ret = esp_ble_gap_register_callback(ble_gap_event_handler)) != ESP_OK) { ESP_LOGE(TAG, "esp_ble_gap_register_callback failed: %d", ret); return ret; } return ret; } static esp_ble_scan_params_t hid_scan_params = { .scan_type = BLE_SCAN_TYPE_ACTIVE, .own_addr_type = BLE_ADDR_TYPE_PUBLIC, .scan_filter_policy = BLE_SCAN_FILTER_ALLOW_ALL, .scan_interval = 0x50, .scan_window = 0x30, .scan_duplicate = BLE_SCAN_DUPLICATE_ENABLE, }; static esp_err_t start_ble_scan(uint32_t seconds) { esp_err_t ret = ESP_OK; if ((ret = esp_ble_gap_set_scan_params(&hid_scan_params)) != ESP_OK) { ESP_LOGE(TAG, "esp_ble_gap_set_scan_params failed: %d", ret); return ret; } WAIT_BLE_CB(); if ((ret = esp_ble_gap_start_scanning(seconds)) != ESP_OK) { ESP_LOGE(TAG, "esp_ble_gap_start_scanning failed: %d", ret); return ret; } return ret; } esp_err_t esp_hid_ble_gap_adv_init(uint16_t appearance, const char *device_name) { esp_err_t ret; const uint8_t hidd_service_uuid128[] = { 0xfb, 0x34, 0x9b, 0x5f, 0x80, 0x00, 0x00, 0x80, 0x00, 0x10, 0x00, 0x00, 0x12, 0x18, 0x00, 0x00, }; esp_ble_adv_data_t ble_adv_data = { .set_scan_rsp = false, .include_name = true, .include_txpower = true, .min_interval = 0x0006, //slave connection min interval, Time = min_interval * 1.25 msec .max_interval = 0x0010, //slave connection max interval, Time = max_interval * 1.25 msec .appearance = appearance, .manufacturer_len = 0, .p_manufacturer_data = NULL, .service_data_len = 0, .p_service_data = NULL, .service_uuid_len = sizeof(hidd_service_uuid128), .p_service_uuid = (uint8_t *)hidd_service_uuid128, .flag = 0x6, }; esp_ble_auth_req_t auth_req = ESP_LE_AUTH_REQ_SC_MITM_BOND; //esp_ble_io_cap_t iocap = ESP_IO_CAP_OUT;//you have to enter the key on the host //esp_ble_io_cap_t iocap = ESP_IO_CAP_IN;//you have to enter the key on the device esp_ble_io_cap_t iocap = ESP_IO_CAP_IO;//you have to agree that key matches on both //esp_ble_io_cap_t iocap = ESP_IO_CAP_NONE;//device is not capable of input or output, unsecure uint8_t init_key = ESP_BLE_ENC_KEY_MASK | ESP_BLE_ID_KEY_MASK; uint8_t rsp_key = ESP_BLE_ENC_KEY_MASK | ESP_BLE_ID_KEY_MASK; uint8_t key_size = 16; //the key size should be 7~16 bytes uint32_t passkey = 1234;//ESP_IO_CAP_OUT if ((ret = esp_ble_gap_set_security_param(ESP_BLE_SM_AUTHEN_REQ_MODE, &auth_req, 1)) != ESP_OK) { ESP_LOGE(TAG, "GAP set_security_param AUTHEN_REQ_MODE failed: %d", ret); return ret; } if ((ret = esp_ble_gap_set_security_param(ESP_BLE_SM_IOCAP_MODE, &iocap, 1)) != ESP_OK) { ESP_LOGE(TAG, "GAP set_security_param IOCAP_MODE failed: %d", ret); return ret; } if ((ret = esp_ble_gap_set_security_param(ESP_BLE_SM_SET_INIT_KEY, &init_key, 1)) != ESP_OK) { ESP_LOGE(TAG, "GAP set_security_param SET_INIT_KEY failed: %d", ret); return ret; } if ((ret = esp_ble_gap_set_security_param(ESP_BLE_SM_SET_RSP_KEY, &rsp_key, 1)) != ESP_OK) { ESP_LOGE(TAG, "GAP set_security_param SET_RSP_KEY failed: %d", ret); return ret; } if ((ret = esp_ble_gap_set_security_param(ESP_BLE_SM_MAX_KEY_SIZE, &key_size, 1)) != ESP_OK) { ESP_LOGE(TAG, "GAP set_security_param MAX_KEY_SIZE failed: %d", ret); return ret; } if ((ret = esp_ble_gap_set_security_param(ESP_BLE_SM_SET_STATIC_PASSKEY, &passkey, sizeof(uint32_t))) != ESP_OK) { ESP_LOGE(TAG, "GAP set_security_param SET_STATIC_PASSKEY failed: %d", ret); return ret; } if ((ret = esp_ble_gap_set_device_name(device_name)) != ESP_OK) { ESP_LOGE(TAG, "GAP set_device_name failed: %d", ret); return ret; } if ((ret = esp_ble_gap_config_adv_data(&ble_adv_data)) != ESP_OK) { ESP_LOGE(TAG, "GAP config_adv_data failed: %d", ret); return ret; } return ret; } esp_err_t esp_hid_ble_gap_adv_start(void) { static esp_ble_adv_params_t hidd_adv_params = { .adv_int_min = 0x20, .adv_int_max = 0x30, .adv_type = ADV_TYPE_IND, .own_addr_type = BLE_ADDR_TYPE_PUBLIC, .channel_map = ADV_CHNL_ALL, .adv_filter_policy = ADV_FILTER_ALLOW_SCAN_ANY_CON_ANY, }; return esp_ble_gap_start_advertising(&hidd_adv_params); } /* * CONTROLLER INIT * */ static esp_err_t init_low_level(uint8_t mode) { esp_err_t ret; esp_bt_controller_config_t bt_cfg = BT_CONTROLLER_INIT_CONFIG_DEFAULT(); #if CONFIG_BT_CLASSIC_ENABLED if (mode & ESP_BT_MODE_CLASSIC_BT) { bt_cfg.mode = mode; bt_cfg.bt_max_acl_conn = 3; bt_cfg.bt_max_sync_conn = 3; } else #endif { ret = esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT); if (ret) { ESP_LOGE(TAG, "esp_bt_controller_mem_release failed: %d", ret); return ret; } } ret = esp_bt_controller_init(&bt_cfg); if (ret) { ESP_LOGE(TAG, "esp_bt_controller_init failed: %d", ret); return ret; } ret = esp_bt_controller_enable(mode); if (ret) { ESP_LOGE(TAG, "esp_bt_controller_enable failed: %d", ret); return ret; } ret = esp_bluedroid_init(); if (ret) { ESP_LOGE(TAG, "esp_bluedroid_init failed: %d", ret); return ret; } ret = esp_bluedroid_enable(); if (ret) { ESP_LOGE(TAG, "esp_bluedroid_enable failed: %d", ret); return ret; } #if CONFIG_BT_CLASSIC_ENABLED if (mode & ESP_BT_MODE_CLASSIC_BT) { ret = init_bt_gap(); if (ret) { return ret; } } #endif if (mode & ESP_BT_MODE_BLE) { ret = init_ble_gap(); if (ret) { return ret; } } return ret; } esp_err_t esp_hid_gap_init(uint8_t mode) { esp_err_t ret; if (!mode || mode > ESP_BT_MODE_BTDM) { ESP_LOGE(TAG, "Invalid mode given!"); return ESP_FAIL; } if (bt_hidh_cb_semaphore != NULL) { ESP_LOGE(TAG, "Already initialised"); return ESP_FAIL; } bt_hidh_cb_semaphore = xSemaphoreCreateBinary(); if (bt_hidh_cb_semaphore == NULL) { ESP_LOGE(TAG, "xSemaphoreCreateMutex failed!"); return ESP_FAIL; } ble_hidh_cb_semaphore = xSemaphoreCreateBinary(); if (ble_hidh_cb_semaphore == NULL) { ESP_LOGE(TAG, "xSemaphoreCreateMutex failed!"); vSemaphoreDelete(bt_hidh_cb_semaphore); bt_hidh_cb_semaphore = NULL; return ESP_FAIL; } ret = init_low_level(mode); if (ret != ESP_OK) { vSemaphoreDelete(bt_hidh_cb_semaphore); bt_hidh_cb_semaphore = NULL; vSemaphoreDelete(ble_hidh_cb_semaphore); ble_hidh_cb_semaphore = NULL; return ret; } return ESP_OK; } esp_err_t esp_hid_scan(uint32_t seconds, size_t *num_results, esp_hid_scan_result_t **results) { if (num_bt_scan_results || bt_scan_results || num_ble_scan_results || ble_scan_results) { ESP_LOGE(TAG, "There are old scan results. Free them first!"); return ESP_FAIL; } if (start_ble_scan(seconds) == ESP_OK) { #if CONFIG_BT_CLASSIC_ENABLED if (start_bt_scan(seconds) == ESP_OK) { WAIT_BT_CB(); } #endif WAIT_BLE_CB(); } else { return ESP_FAIL; } *num_results = num_bt_scan_results + num_ble_scan_results; *results = bt_scan_results; if (num_bt_scan_results) { while (bt_scan_results->next != NULL) { bt_scan_results = bt_scan_results->next; } bt_scan_results->next = ble_scan_results; } else { *results = ble_scan_results; } num_bt_scan_results = 0; bt_scan_results = NULL; num_ble_scan_results = 0; ble_scan_results = NULL; return ESP_OK; }