ble_gatt.h File Reference

Bluetooth ATT protocol codec + GATT characteristic bridge (DETWS_ENABLE_BLE_GATT). More...

#include "ServerConfig.h"
#include <stddef.h>
#include <stdint.h>

Go to the source code of this file.

Detailed Description

Bluetooth ATT protocol codec + GATT characteristic bridge (DETWS_ENABLE_BLE_GATT).

The ESP32's BLE radio is on-chip, but bridging GATT to the web still needs the wire protocol under GATT - the Attribute Protocol (ATT, Bluetooth Core Vol 3 Part F): the read / write / notify / error PDUs a central and peripheral exchange, each a 1-byte opcode followed by a little-endian attribute handle and value. This is that codec (build + parse the common ATT PDUs) plus a small characteristic table serializer that exposes discovered / offered GATT characteristics as JSON for the web stack.

Pure, zero heap, no stdlib, host-testable. The BLE stack (NimBLE / Bluedroid) owns the radio; this owns the ATT bytes and the northbound JSON.

Definition in file ble_gatt.h.