https://github.com/bertrandmartel/bluetooth-remote-control
Bluetooth Low Energy remote control based on NRF 51 DK board with an additional display capability
https://github.com/bertrandmartel/bluetooth-remote-control
android android-tv bluetooth-le dk51 hid nrf51822 remote-control
Last synced: 5 months ago
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Bluetooth Low Energy remote control based on NRF 51 DK board with an additional display capability
- Host: GitHub
- URL: https://github.com/bertrandmartel/bluetooth-remote-control
- Owner: bertrandmartel
- License: mit
- Created: 2016-08-16T13:33:40.000Z (about 9 years ago)
- Default Branch: master
- Last Pushed: 2017-01-12T11:57:23.000Z (over 8 years ago)
- Last Synced: 2025-04-19T20:17:44.170Z (6 months ago)
- Topics: android, android-tv, bluetooth-le, dk51, hid, nrf51822, remote-control
- Language: Java
- Size: 37.8 MB
- Stars: 29
- Watchers: 6
- Forks: 10
- Open Issues: 2
-
Metadata Files:
- Readme: README.md
- License: LICENSE.md
Awesome Lists containing this project
README
# Bluetooth Remote Control
https://bertrandmartel.github.io/bluetooth-remote-control
[](https://travis-ci.org/bertrandmartel/bluetooth-remote-control)
[](LICENSE.md)
[](https://play.google.com/store/apps/details?id=com.github.akinaru.bleremote)
Bluetooth Low Energy remote control based on DK51 board from Nordic Semiconductor with ST7735 1.8 Oled LCD from Adafruit
## Features
* HID Service BLE over GATT for full compatibility with Android TV :
* keyboard control :
* up / down / left / right
* escape (back)
* consumer control :
* AC Search
* AC Home
* Play/Pause (Android custom keycode)
* Custom Display Service used to receive a compressed bitmap over GATT :
* compressed bitmap is stored temporarily on device flash & removed afterward
* bitmap format is 128*160 fastlz compressed with block of 4096 octet
* regular characteristic write is used (not long write)
* Android application can be used to test :
* hid keys notification
* command led states on DK51 board
* send a bitmap to be displayed on adafruit OLED module
* works fine on Android / Android TV
* works on Apple TV but some keycode differ (consumer control)
* this project doesn't implement any Audio Service for Voice Search
## Mode 1 : Android testing application
## Mode 2 : BLE HID Service mode
You can't combined Mode 1 & Mode 2 simultaneously.
## Project structure
* /firmware - microcontroller code written for NRF DK51 board
* /android - android application to control device
## Hardware setup
* NRF51 DK board
* nrf51822 chipset based on an ARM Cortex M0 processor (128kB flash memory / 16kB RAM)
* Adafruit 1.8" Color TFT Shield with Joystick
## Hardware installation
`RST` is linked to `VDD`
## Build
### Get source code
```
git clone git@github.com:bertrandmartel/bluetooth-remote-control.git
cd bluetooth-remote-control
git submodule update --init --recursive
```
### Configuration
* armgcc toolchain
* sofdevice s130
* nRF5 SDK 11.0.0
### Setup / Installation
* follow SDK/Toolchain Installation steps section of this tutorial
* specify NRF51 SDK directory with :
```
export NRF51_SDK_DIR=/path/to/sdk
```
### Build & flash firmware
```
cd firmware
make
make flash_softdevice
make flash
```
### Build Android App
```
cd android
./gradlew build
```
## External library
### Firmware
* NRF 51 SDK 11.0.0 : https://www.nordicsemi.com/eng/Products/Bluetooth-low-energy/nRF5-SDK
* fastlz compression library : https://github.com/ariya/FastLZ
* Integration of Adafruit OLED ST7735 1.8 display on NRF51 DK board : https://github.com/bertrandmartel/adafruit-oled-st7735-dk51
### Android application
* Android crop image library : https://github.com/lvillani/android-cropimage
* Simple vertical and horizontal color picker : https://github.com/DASAR/ShiftColorPicker
* fastlz compression library : https://github.com/ariya/FastLZ
* appcompat-v7, design & recyclerview-v7
### External links
* USB HID keycode : http://www.freebsddiary.org/APC/usb_hid_usages.php
* Android HID keycode/keyevent mapping : https://source.android.com/devices/input/keyboard-devices.html
## License
The MIT License (MIT) Copyright (c) 2016 Bertrand Martel