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NimBLE

Lightweight, BLE-only host stack; available in ESP-IDF as ESP-NimBLE.

library also known as ESP-NimBLE, Apache Mynewt NimBLE

Knowledge about NimBLE

ESP32: use NimBLE for BLE-only products, Bluedroid only if you need Bluetooth Classicrecommendation · unverified · In ESP-IDF, ESP-NimBLE needs less memory (heap and flash) than ESP-Bluedroid but supports BLE only. Choose Bluedroid when you need Classic Bluetooth (e.g. A2DP, SPP).

Related

alternative to: Bluedroid – BLE-only with smaller heap and flash use; Bluedroid is needed for Bluetooth Classic.