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docs(ble): add BLE UART tutorial and opencode bridge demo

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- Add BLE UART service example with OpenCode companion docs
- Add BLE UART bridge demo for opencode integration
- Add BLE UART common library improvements
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Zhou Xiao
2026-06-22 10:20:47 +08:00
parent f82a0593e0
commit d3409dbac6
31 changed files with 1072 additions and 113 deletions
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tools/ble/ble_uart_bridge/docs/PORTING.md
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<!-- SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD -->
<!-- SPDX-License-Identifier: Apache-2.0 -->
# Porting BLE UART Bridge to Custom Scripts
# Porting ESP-BLE-UART Bridge to Custom Scripts
This guide explains how to reuse BLE UART Bridge in your own Python scripts.
This guide explains how to reuse ESP-BLE-UART Bridge in your own Python scripts.
Use the Core API when the Console and Daemon are not the right abstraction for your application. For example, use Core directly when you want to implement custom framing, a test harness, a device provisioning flow, or a domain-specific automation script.
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## Install dependencies
You can reuse the ESP-IDF Python environment, or use your own Python virtual environment. If you reuse the ESP-IDF environment, export it first and then install the extra dependencies required by BLE UART Bridge:
You can reuse the ESP-IDF Python environment, or use your own Python virtual environment. If you reuse the ESP-IDF environment, export it first and then install the extra dependencies required by ESP-BLE-UART Bridge:
```bash
cd $IDF_PATH
tools/ble/ble_uart_bridge/docs/Profile-Compatibility.md
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<!-- SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD -->
<!-- SPDX-License-Identifier: Apache-2.0 -->
# BLE UART Profile Compatibility
# ESP-BLE-UART Profile Compatibility
BLE UART Bridge works with BLE GATT profiles that provide a UART-like data path:
ESP-BLE-UART Bridge works with BLE GATT profiles that provide a UART-like data path:
- one characteristic that the host writes to
- one characteristic that the device uses to notify data back to the host
The default profile matches the widely used BLE UART-over-GATT UUID set (service `6E400001-…`, RX/TX characteristics), but that layout is not the only possible BLE UART-style profile.
## Default BLE-UART-compatible profile
## Default BLE UART-compatible profile
The built-in default profile uses these UUIDs:
@@ -33,7 +33,7 @@ ESP-IDF includes BLE SPP examples that implement Espressif BLE UART-like vendor-
BLE SPP over BLE is not a Bluetooth SIG standard profile. It is a vendor-specific GATT design that emulates a serial link, similar in purpose to the default BLE UART layout above.
ESP-IDF BLE SPP examples may define more characteristics than BLE UART Bridge needs, such as data, command, and status characteristics. To use BLE UART Bridge with such a profile, map only the UART-like data path into `BLEUARTProfile`.
ESP-IDF BLE SPP examples may define more characteristics than ESP-BLE-UART Bridge needs, such as data, command, and status characteristics. To use ESP-BLE-UART Bridge with such a profile, map only the UART-like data path into `BLEUARTProfile`.
## Mapping an ESP-IDF BLE SPP profile
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Replace the UUIDs with the actual UUIDs used by the device firmware.
## What BLE UART Bridge does not map
## What ESP-BLE-UART Bridge does not map
BLE UART Bridge is intentionally focused on the data path. It does not automatically map extra control-plane characteristics that a profile may expose, such as:
ESP-BLE-UART Bridge is intentionally focused on the data path. It does not automatically map extra control-plane characteristics that a profile may expose, such as:
- command characteristics
- status characteristics
- custom configuration characteristics
- profile-specific flow-control semantics
If an application needs those characteristics, implement that logic in a custom script on top of `bleak`, or extend BLE UART Bridge for that specific profile.
If an application needs those characteristics, implement that logic in a custom script on top of `bleak`, or extend ESP-BLE-UART Bridge for that specific profile.
## Classic Bluetooth SPP is different
Classic Bluetooth SPP examples, such as `examples/bluetooth/bluedroid/classic_bt/bt_spp_*`, are not BLE GATT profiles.
They use Classic Bluetooth SPP rather than BLE GATT characteristics, so they are not compatible with BLE UART Bridge.
They use Classic Bluetooth SPP rather than BLE GATT characteristics, so they are not compatible with ESP-BLE-UART Bridge.
## Related docs
tools/ble/ble_uart_bridge/docs/Quick-Start-BLE-UART-Console.md
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<!-- SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD -->
<!-- SPDX-License-Identifier: Apache-2.0 -->
# Quick Start: BLE UART Console
# Quick Start: ESP-BLE-UART Console
This guide shows how to use the BLE UART Console for quick manual testing.
This guide shows how to use the ESP-BLE-UART Console for quick manual testing.
The Console is useful when you want to type data into a BLE UART device and inspect the bytes or text sent back by the device.
## Prerequisites
1. A host machine with Bluetooth access.
2. Python environment prepared. You can reuse the ESP-IDF Python environment, or use your own Python virtual environment. If you reuse the ESP-IDF environment, export it first and then install the BLE UART Bridge dependencies:
2. Python environment prepared. You can reuse the ESP-IDF Python environment, or use your own Python virtual environment. If you reuse the ESP-IDF environment, export it first and then install the ESP-BLE-UART Bridge dependencies:
```bash
cd $IDF_PATH
@@ -21,7 +21,7 @@ The Console is useful when you want to type data into a BLE UART device and insp
On Windows, run `export.bat` or `export.ps1` from the ESP-IDF root directory before installing `requirements.txt`. If you use your own Python virtual environment instead, activate it before installing `requirements.txt`.
3. A BLE device advertising the BLE UART service. By default the tool scans for the de-facto BLE UART-over-GATT UUIDs (`6E400001-…` / `…02` / `…03`). For a known-compatible test target, build and flash the [BLE UART Service example](../../../../examples/bluetooth/ble_uart_service), which acts as an Echo Server by echoing RX writes back through TX notifications.
3. A BLE device advertising the BLE UART service. By default the tool scans for the de-facto BLE UART-over-GATT UUIDs (`6E400001-…` / `…02` / `…03`). For a known-compatible test target, build and flash the [ESP-BLE-UART example](../../../../examples/bluetooth/ble_uart_service), which acts as an Echo Server by echoing RX writes back through TX notifications.
## Find a device
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Example output may include a device address and name:
```text
Found: AA:BB:CC:DD:EE:FF, with name esp-ble-uart, rssi=-42
Found: AA:BB:CC:DD:EE:FF, with name BleUart-XXXX, rssi=-42
```
Use the printed device identifier as `DEVICE_ID`. On macOS, this identifier is a CoreBluetooth UUID and is different from the device MAC address.
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## Common examples
### ESP-IDF BLE UART Echo Server
### ESP-BLE-UART Echo Server
Use the [BLE UART Service example](../../../../examples/bluetooth/ble_uart_service) when you want a ready-made ESP-IDF Echo Server for testing BLE UART Bridge Console. After building, flashing, and pairing with the example, open Console and type any text; the example should echo the same data back as `[RX]` output.
Use the [ESP-BLE-UART example](../../../../examples/bluetooth/ble_uart_service) when you want a ready-made ESP-IDF Echo Server for testing ESP-BLE-UART Bridge Console. After building, flashing, and pairing with the example, open Console and type any text; the example should echo the same data back as `[RX]` output.
```bash
# List nearby BLE devices and use the printed device ID as DEVICE_ID
tools/ble/ble_uart_bridge/docs/Quick-Start-BLE-UART-Daemon.md
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<!-- SPDX-FileCopyrightText: 2026 Espressif Systems (Shanghai) CO LTD -->
<!-- SPDX-License-Identifier: Apache-2.0 -->
# Quick Start: BLE UART Daemon
# Quick Start: ESP-BLE-UART Daemon
This guide shows how to use BLE UART Daemon mode and the lightweight JSONL RPC protocol used between the host and the BLE device.
This guide shows how to use ESP-BLE-UART Daemon mode and the lightweight JSONL RPC protocol used between the host and the BLE device.
Daemon mode is useful when another local process needs to communicate with a BLE UART device without owning the BLE connection itself.
## Prerequisites
1. A host machine with Bluetooth access.
2. Python environment prepared. You can reuse the ESP-IDF Python environment, or use your own Python virtual environment. If you reuse the ESP-IDF environment, export it first and then install the BLE UART Bridge dependencies:
2. Python environment prepared. You can reuse the ESP-IDF Python environment, or use your own Python virtual environment. If you reuse the ESP-IDF environment, export it first and then install the ESP-BLE-UART Bridge dependencies:
```bash
cd $IDF_PATH