CanonBLEIntervalometer

KO | EN

gitlite — search

#react #typescript #android #machine-learning #rust #deep-learning #java #awesome #cli #kubernetes #vue #mcp #ios #open-source

CanonBLEIntervalometer

(★ 10)

An ESP32 based intervalometer using the Canon BLE protocol.

CanonBLEIntervalometer 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

Was this content helpful?

★ 0 (0 ratings)

# ESP32 intervalometer

The "src" contains the code for an ESP32-IDF based intervalometer.

# Canon BLE protocol

## Overview

There are 4 services in a Canon camera, which can be used to control it:
* __00010000-0000-1000-0000-d8492fffa821__: Used for pairing.
* * __00010005-0000-1000-0000-d8492fffa821__: Unknown
* * __00010006-0000-1000-0000-d8492fffa821__: Pairing commands.
* * __0001000a-0000-1000-0000-d8492fffa821__: Pairing data.
* * __0001000b-0000-1000-0000-d8492fffa821__: Unknown
* __0002000-0000-1000-0000-d8492fffa821__: Unknown. Seems to contain information about the camera.
* __0003000-0000-1000-0000-d8492fffa821__: Used for triggering the camera.
* * __00030010-0000-1000-0000-d8492fffa821__: Seems to configure the trigger state notifications.
* * __00030030-0000-1000-0000-d8492fffa821__: Trigger.
* * __00030031-0000-1000-0000-d8492fffa821__: Trigger state notifications.
* __0004000-0000-1000-0000-d8492fffa821__: Unknown.

The camera only connects to paired devices so in order to communicate with the camera the pairing process needs to be done first. Also only BLE bonded devices can communicate.

___Pairing commands___:
* 0x01: Confirm.
* 0x02: Fail.
* 0x03: Set UUID.
* 0x04: Set nickname.
* 0x05: Set type:
* * Types:
* * 0x01: iOS
* * 0x02: Android
* * 0x03: Remocon

Pairing commands start with the command byte then the data:
* UUID: __[__ 0x03, 128bits of UUID __]__
* Nickname: __[__ 0x04, ASCII name __]__
* Type: __[__ 0x05, 0x03 __]__ (Android)

___Pairing indication results___:
* 0x01: Request (does not seem to be used)
* 0x02: OK
* 0x03: *"NG"* (?)

### Pairing process

The pairing process uses Service 1, the pairing process looks as follows:
1) Connect to the camera and find all services and characteristics.
2) Send the __Set nickname command__ *to the pairing command characteristic* with *security* and bonding enabled, this should fail because the devices are not bonded.
3) Wait for the bonding process to finish.
4) Send the __Set name command__ again without any security requirements.
5) Enable *indications* for the *pairing command* characteristic.
6) Wait for a callback, if the pairing is accepted continue, otherwise abort.
7) Send the __Set name command__, __Set platform command__ and the __Confirm command__ to the *pairing data* characteristic.
8) The devices are now paired.

### Connection process

After a device is paired with a camera and wants to connect it needs to do the following:
1) Connect to the camera and find all services and characteristics.
2) Write any characteristic or characteristic descriptor with *security*, this should fail and initiate the bonding process.
3) After the bonding is finished commands can be sent to the camera.

### Triggering

1) Write __0x0001__ to the *trigger* characteristic. This triggers the camera.
2) Write __0x0002__ to the *trigger* characteristic. This finishes the trigger process and shows the result.

(Tested and works with Canon EOS M50)

CanonBLEIntervalometer

CanonBLEIntervalometer 최신버젼 다운로드

오늘의 추천 프로젝트

Was this content helpful?

Recent Feedback

CanonBLEIntervalometer

CanonBLEIntervalometer 최신버젼 다운로드

오늘의 추천 프로젝트

Was this content helpful?

Recent Feedback

Download README