Matthias Ringwald

Bluetooth for All!

[Matthias Ringwald @mringwal]

About the adventures of connecting an Bluetooth /Wifi M.2 card via regular USB to my Mac.

[BlueKitchen GmbH @BlueKitchenGmbH]

Bluetooth SIG added support for Intel BE200 Bluetooth/Wifi cards to PTS - connection options in our blog: https://t.co/UiLhBmWx5X

[Matthias Ringwald @mringwal]

Finally able to control our living room projector remotely via Matter by having an ESP32-C3 press the Power button and monitor the LEDs :)
https://t.co/0H5e6GlQXP

[Matthias Ringwald @mringwal]

Finally managed to record a video and write about AVRCP Cover Art from iPad on @pimoroni Cosmic Unicorn based on on @Gadgetoid 's spectrum analyzer demo: https://t.co/Ka4yAh2TMa

[Matthias Ringwald @mringwal]

Anybody managed to access iOS GATT Services over an existing BR/EDR Connection? Want to read the battery, but only get 'connection refused: no resources available' when connecting to ATT PSM 0x1f. #CoreBluetooth

[Matthias Ringwald @mringwal]

Need to access a device or sensor with a common bus interface like I2C, I2S SPI, SDIO and friends from your desktop system, please checkout our new https://t.co/fzOkwutSVY project.

[Matthias Ringwald @mringwal]

The BL654 USB dongle from Laird Technologies is back-ordered until Summer 2022 - use an nRF52840 USB dongle with Bluetooth PTS instead

[BlueKitchen GmbH @BlueKitchenGmbH]

New blog post on using nRF52840 USB dongle with Bluetooth PTS: https://t.co/MhrahhEgnV

[Matthias Ringwald @mringwal]

Another simple KICAD design, this time with black text on white mask to match the STM32 Nucleo board.

[BlueKitchen GmbH @BlueKitchenGmbH]

New Semtech SX1280 breakout board for our experimental BLE link layer.
https://t.co/JYxxpBZjUy

[Matthias Ringwald @mringwal]

My first experience with USB on an embedded MCU...

[BlueKitchen GmbH @BlueKitchenGmbH]

New blog post on using an STM32 F4 Discovery board with an USB Bluetooth Dongle to boot BTstack: https://t.co/fqSwhxTDg5

[Matthias Ringwald @mringwal]

Finally got around to play with circular/ping pong DMA and manual CTS/RTS to continuously receive data without loosing bytes.

[BlueKitchen GmbH @BlueKitchenGmbH]

New blog post explores how to correctly receive Bluetooth HCI packets on UART data without RTS/CTS: https://t.co/qWaZBAcwBY

[BlueKitchen GmbH @BlueKitchenGmbH]

New blog post explores how to correctly receive Bluetooth HCI packets on UART data without RTS/CTS: https://t.co/qWaZBAcwBY

[Matthias Ringwald @mringwal]

GATT over BR/EDR seems cool for firmware updates, or sending/retrieving larger files from/to iOS.

[BlueKitchen GmbH @BlueKitchenGmbH]

iOS 13 will support GATT over BR/EDR - a.k.a. CoreBluetooth Classic (https://t.co/SimFRs6zrX). You can check it out with BTstack -> https://t.co/Xhl4vDbz5J

[Matthias Ringwald @mringwal]

lwIP is compact and fun...

[BlueKitchen GmbH @BlueKitchenGmbH]

New example of running lwIP HTTP + DHCP server on top of BTstack's PAN implementation - provide a Web app for your device instead of native apps... https://t.co/PdDWhTLggo

[Matthias Ringwald @mringwal]

@dennismantz Sounds good. Any idea already where the WizardsOfDos CTF is located :) ? Don't see it at the 'Assemblies' page.

[Matthias Ringwald @mringwal]

@dennismantz just saw your mrmcd talk. I'd be curious if InternalBlue could be used to built a full BR/EDR sniffer. Are you around Days 1-3 at 35C3 as well? I'd be happy to say hi.

[Matthias Ringwald @mringwal]

Arrived in Leipzig today for 35C3. DM me if you're curious about the Raccoon BLE Sniffer or BTstack in general.

[Matthias Ringwald @mringwal]

New project with Dirk: the open-source BLE Sniffer called Raccoon for Nordic's nRF5x line. Captures unencrypted connections incl. LE Data Length Extensions. Use 3 sniffers to track all advertisement channels. Encryption, 2M and Codec PHY will come soon! https://t.co/67tQ5kpkJq

[plan44.ch @plan44ch]

70 devices based on our P44-DSB-xx2 experience now power the ETH Digital Platform, shown to the public for the first time this weekend: (Image © Jon Etter) https://t.co/ud8bf3ormN https://t.co/FCEX9feHWz

[Matthias Ringwald @mringwal]

A friend pointed out a stupid bug in the POSIX version of our Broadcom chipset driver and also helped to figure out how to use the 'mailbox' firmware interface to properly power cycle Bluetooth. Et voilà...

[BlueKitchen GmbH @BlueKitchenGmbH]

New BTstack port for @Raspberry_Pi 3 and @Raspberry_Pi Zero W using built-in BCM4343 Bluetooth/Wifi Controller: https://t.co/yshE2ZRmzG

[Matthias Ringwald @mringwal]

@spirilis lol. Most Bluetooth Controllers and even ready-to-use Bluetooth modules have the pads below, so reflow soldering is really lurking behind the corner...

[Matthias Ringwald @mringwal]

Short post on my first two PCBs. Ready for the next step (maybe some resistors.. :) https://t.co/qET4fkHocE

[BlueKitchen GmbH @BlueKitchenGmbH]

Two new adapter boards (EM9304 Module Breakout + ARM Cortex STM32 Nucleo): https://t.co/kdIHhUHukr