asciilifeform: if they set this up correctly: widget will be hard-wired to boot from 'boot rom' section of FW, which receives upgrade and calculates checksum and rsa sig.
asciilifeform: OTG FS in Device mode (PA11/PA12) through DFU (device firmware upgrade).'
asciilifeform: using USART1 (PA9/PA10), USART3 (PC10/PC11 or PB10/PB11), CAN2 (PB5/PB13), USB
asciilifeform: 'The boot loader is located in system memory. It is used to reprogram the Flash memory by
asciilifeform: 'At startup, boot pins are used to select one out of three boot options: * Boot from user Flash * Boot from system memory * Boot from embedded SRAM'
asciilifeform: how much funding does one need to build a few keychain-sized boards
asciilifeform: i grew up reading about inventors, hucksters, etc. and i always thought it was obvious that you need a prototype to really wake people up
asciilifeform: interesting how they toured conventions, etc. for ages with no widget.