Silicon Labs has announced the BG29 family of Bluetooth Low Energy (BLE) wireless microcontrollers, suitable for wearables and even smart teeth implants, featuring an Arm Cortex-M33F core, up to 1MB of flash storage, and a variety of peripherals.
do not use hub but do reboot between two successive installs hub will provide power (even unpowered hub) for testing but not enough for stable operation, which must be negotiated. eventually i stopped getting errors about pre-load etc from sudo kextutil -tn /Library/Extensions/SiLabsUSBDriver.kext
