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...

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) plan44.ch/media/ETH_DP_s… plan44.ch/custom

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! github.com/bluekitchen/ra…

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

lwIP is compact and fun...

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

New blog post explores how to correctly receive Bluetooth HCI packets on UART data without RTS/CTS: bluekitchen-gmbh.com/msp432p401r-cc…

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

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

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

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

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 github.com/mringwal/multi… project.

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

Finally managed to record a video and write about AVRCP Cover Art from iPad on pimoroni Cosmic Unicorn based on on vaporweave 's spectrum analyzer demo: bluekitchen-gmbh.com/avrcp-cover-ar…

Finally able to control our living room projector remotely via Matter by having an ESP32-C3 press the Power button and monitor the LEDs :) github.com/mringwal/proje…

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

I've had fun writing a bit of Python code for this... x.com/BlueKitchenGmb…

The new Bluetooth PTS Test Dongles bluetoothstore.myshopify.com support 2 BLE Peripheral Roles - while a bit expensive for a USB Bluetooth dongle, it's the first I've seen that supports more than one BLE Role. LE Data Length Extension would have been nice as well...

Slowly learning Kicad. Together with OSHpark it gets to easy create useful things quickly. x.com/BlueKitchenGmb…

Short post on my first two PCBs. Ready for the next step (maybe some resistors.. :) x.com/BlueKitchenGmb…