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Advanced. Deep dive for people who know the field.
52K views9 years ago2 recommendations
Systems programmingHardwareEmbedded systemsNetworking and protocols
Xobs explains how to write an open-source, software-only low-speed USB stack running on a sub-dollar Cortex-M0+ microcontroller.
media.ccc.de/v/33c3-8031-no_usb_no_problem How to write an open source bit-bang low-speed USB stack running on a sub-$1 Cortex M0+ How to get USB running on an ARM microcontroller that has no built in USB hardware. We'll cover electrical requirements, pin assignments, and microcontroller considerations, then move all the way up the stack to creating a bidirectional USB HID communications layer entirely in software. ['Xobs']What people say. Recommended as a great starting point for understanding USB protocols and how to implement them without dedicated hardware.
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