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TEPRA Lite BLE 54 #wakate 2021 @puhitaku

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Takumi Sueda @puhitaku NICT ( ) HOMMA 
 2014 2018 2020 
 Linux 


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TEPRA 3

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https://twitter.com/ejo 090 /status/ 425 52 334 04 306 96 448 4

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https://twitter.com/okayan 08 /status/ 7 972 55 664 46 460 10 89 5

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https://twitter.com/okayan 08 /status/ 5 658 60 495 74 418 43 22 6

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1000 https://www.kingjim.co.jp/products/tepra/ 7

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: 9

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https://www.kingjim.co.jp/products/tepra/sr 37 0 .html 10

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100 https://www.kingjim.co.jp/products/tepra/sr 37 0 .html 11

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https://www.kingjim.co.jp/products/brand/tepra-pro.html 13

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OS 15,000 https://www.kingjim.co.jp/products/brand/tepra-pro.html 14

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TEPRA Lite LR 30 
 TEPRA Lite LR 30 17

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TEPRA Lite LR 30 https://www.kingjim.co.jp/sp/lr 3 0 / 18

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TEPRA Lite LR 30 https://www.kingjim.co.jp/sp/lr 3 0 / 19

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TEPRA Lite LR 30 https://www.kingjim.co.jp/sp/lr 3 0 / 20

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TEPRA Lite LR 30 21

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TEPRA Lite LR 30 22

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TEPRA Lite LR 30 https://www.kingjim.co.jp/products/tepra/sr 37 0 .html 23

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TEPRA Lite LR 30 
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TEPRA Lite LR 30 25

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TEPRA Lite LR 30 26

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TEPRA Lite BLE 54 #wakate 2021 @puhitaku

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Bluetooth Low Energy (BLE) https://www.kingjim.co.jp/sp/lr 3 0 /feature/index.html 28

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1 . Android APK 2 . BLE sni ff er 2 BLE 29 Bluefruit LE Sni ff er https://www.switch-science.com/catalog/ 3 34 7 /

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PC Bluetooth 2 Bluetooth Bluez Linux BT Python OS 😇 BLE PC 30

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PC Bluetooth API 
 MicroPython Wi-Fi BLE 🥰 BLE 31 ESPr® Developer 32 https://www.switch-science.com/catalog/ 3 21 0 /

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1 . 2 . BLE Service Characteristic 
 3 . 4 . 5 . 2 4 6 . API 7 . 32 
 CC BY 2 . 0 https://www. fl ickr.com/photos/inucara/ 4 809 4 81634

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1. 33

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1. 34

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1. Nordic 
 Wireshark sni ff er Python 2 Apple Silicon Mac pyenv Python 2 . 7 . 18 pyenv PR macOS + Apple Silicon + pyenv Python 3 Bluefruit LE Sni ff er Python 2 Bluefruit LE Sni ff er macOS (Apple Silicon) 35

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2 . BLE Service 
 Characteristic 36

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2 . GATT Service Characteristic ATT (ATTribute Protocol) 
 512 Attribute Handle 2 GATT (Generic ATTribute Protocol) 
 Attribute Service Characteristic ATT Service 
 Characteristic 
 Service 
 37 ATT GATT Service Service Declaration Declaration Characteristic Characteristic Declaration Value Descriptor Declaration Value Descriptor Characteristic Characteristic

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2 . GATT Service Characteristic MicroPython Python (REPL) Bluetooth API bluetooth import BLE IRQ API gattc_discover_services Service discovery prop_write_without_response Characteristic MicroPython BLE 38

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2 . GATT Service Characteristic 0x180f Battery Service … 0x2a19 Battery Level Characteristic 0xfff0 TEPRA Lite Service 0xfff1 TEPRA Lite Char. … Notify (RX) 0xfff2 TEPRA Lite Char. … Write Without Response (TX) Service Characteristic 39 Service Characteristic

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2 . GATT Service Characteristic 0x180f Battery Service … 0x2a19 Battery Level Characteristic 0xfff0 TEPRA Lite Service 0xfff1 TEPRA Lite Char. … Notify (RX) 0xfff2 TEPRA Lite Char. … Write Without Response (TX) Service Characteristic 40 Characteristic

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3. 
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3. 42

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3. 43

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3. 44 0 5

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3. 45 f0 5c = 2 00 03 00 00 00 00 00 00 = 1 00 03 00 00 00 00 00 00 = 2

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3. 46 00 03 00 00 00 00 00 00 2 Bytes (word) After 00 00 00 00 00 00 00 03 Before After

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4. 47

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4. 
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4. 1 49

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6. 
 API 50

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6. API 51 0 5 REST API zlib /prints POST

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6. API 52 0 5 CLI Pillow QR

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7. 53

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7. https://github.com/puhitaku/tepra-lite-esp32 54 GitHub

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 API CLI 56

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Bluetooth 
 57 Sni ff er API Bluetooth MicroPython

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