BLE/GATT example

[oberstet]

Some intros to BLE/GATT:

• https://learn.adafruit.com/introduction-to-bluetooth-low-energy/gatt
• https://developer.android.com/guide/topics/connectivity/bluetooth-le.html
• http://www.st.com/en/evaluation-tools/b-l475e-iot01a.html
• https://www.cnx-software.com/2017/05/29/stmicro-unveils-stm32l4-discovery-kit-for-iot-with-wifi-ble-nfc-sub-ghz-rf-and-plenty-of-sensors/
• http://www.st.com/en/microcontrollers/stm32l4-series.html?querycriteria=productId=SS1580
• https://tobiastrumm.de/2016/10/04/turning-a-raspberry-pi-3-into-a-bluetooth-low-energy-peripheral/
• https://www.slideshare.net/LarsAlexanderBlumber/ble-with-raspberry-pi

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• STM32L4 + BLE
• USB -> Charge + File Transfer + Serial Console + Firmware Update
• 3.5 headset (analog) plug
• BLE/GATT

---

• Android smartphone app
• based on BLE/GATT and AutobahnJava
• acts as generic BLE/GATT-to-WAMP gateway
• runs as background service
• runs over WebSocket/TLS transport
• authenticates using WAMP-cryptosign

[oberstet]

http://www.st.com/content/ccc/resource/technical/document/application_note/3e/6e/d7/61/9d/9e/48/a0/DM00130351.pdf/files/DM00130351.pdf/jcr:content/translations/en.DM00130351.pdf

[om26er]

I am working on this now, will be back in a bit ;-)

[om26er]

@oberstet a PoC of ABJ working on a smartwatch running Android Wear 2.X might be a good thing to showcase here.

[oberstet]

@om26er the smartwatch thing would be nice because of the kinda of data and use cases possible. for the embedded folks, the Pi or an ARM MCU based BLE/GATT device is more approachable and more familiar for them I'd guess.