当前的蓝牙主要分为经典蓝牙(Bluetooth Classic)和低功耗蓝牙(Bluetooth Low Energy, BLE)两者各有优缺点,目前市面上所说的双模蓝牙就是同时使用了这两种蓝牙的模块。 1.1 基础概念 经典蓝牙 (Bluetooth Classic): 又称为 BR/EDR(Basic Rate/Enhanced Data Rate),是一种广泛用于音频传输、数据传输的无线通信技术。...
一.释放经典蓝牙控制器内存 esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT) //传参 esp_bt_mode_t mode //typedef enum { // ESP_BT_MODE_IDLE = 0x00, /*!< Bluetooth is not running */ // ESP_BT_MODE_BLE = 0x01, /*!< Run BLE mode *///低功耗蓝牙 // ESP_BT_MODE_CLASS...
对于ESP32的蓝牙框架有Bluedroid和Bluetooth Controller,Bluedroid相当于主机,通过VHCI(Host Controller Interface)与 Bluetooth Controller通讯。 由于这样的设计ESP32有以下的几种通讯场景。 场景一(ESP-IDF默认):在 ESP32 的系统上,选择 BLUEDROID 为蓝⽛牙主机,并通过 VHCI(软件实现的虚拟 HC...
esp_err_t bluetooth_init(void) { esp_err_t ret; ESP_ERROR_CHECK(esp_bt_controller_mem_release(ESP_BT_MODE_CLASSIC_BT)); //initializes the BT controller by first creating a BT controller configuration structure named `esp_bt_controller_config_t` with default settings generated by the `BT...
For ESP32 wired connections, use USB 3.1 or lower, or use a USB hub to connect your ESP32 Bluetooth adapter. USB 3.2 may cause connection issues. Once everything is ready, enable the External device in the Virtual controller settings, and click on the icon in the lower-left corner (near...
//蓝牙栈 `bluedroid stack` 包括了BT和 BLE 使用的基本的define和APIret=esp_bluedroid_init();if(ret){ESP_LOGE(GATTS_TAG,"%s init bluetooth failed: %s\n",__func__,esp_err_to_name(ret));return;}ret=esp_bluedroid_enable();if(ret){ESP_LOGE(GATTS_TAG,"%s enable bluetooth failed: %s\...
(GATTC_TAG,"%s init bluetooth failed, error code = %x\n",__func__,ret);return;}ret=esp_bluedroid_enable();if(ret){ESP_LOGE(GATTC_TAG,"%s enable bluetooth failed, error code = %x\n",__func__,ret);return;}//register the callback function to the gap moduleret=esp_ble_gap_...
ESP-IDF Releases Toolchain Setup: Windows, Linux, macOS Examples Components ESP-IDF Program Template AT Application for ESP32 ESP-IDF Other Espressif Projects OpenOCD (On-Chip Debugger) Branch with ESP32 JTAG Support BinUtils Fork with Support for the ESP32 ULP Co-processor ESP32 Bluetooth/BLE ...
String My_BLE_Address = "c7:f0:69:f0:68:81"; //Hardware Bluetooth MAC of my fitnessband, will vary for every band obtained through nRF connect application 其次,在程序中,我们有连接到服务器和我的广告服务回拨,我们稍后将返回。然后在设置函数内部,我们初始化串行监视器,并使ESP上的BLE扫描设备。扫...
ret = esp_bt_controller_enable(ESP_BT_MODE_BLE); if (ret) { ESP_LOGE(GATTS_TABLE_TAG, "%s enable controller failed: %s\n", __func__, esp_err_to_name(ret)); return; } // 初始化蓝牙 ESP_LOGI(GATTS_TABLE_TAG, "%s init bluetooth\n", __func__); ret =...