Bitbanging USB On Low Power ARMs

2014年3月23日 | By News | Filed in: News.

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M0

With the Adafruit Trinket, the Digispark, and some very clever work with the smallest microcontroller Atmel offers, it looks like the ‘in’ thing to do for embedded software developers is to bitbang the USB protocol on hardware that shouldn’t support it. There are a lot of very small ARM chips out there without USB support, so it was only a matter of time before someone was able to bitbang USB on the ARM Cortex M0+.

The board above is based on an Energy Micro EMF32ZG, a very small 24-pin QFN device with up to 32 kB of Flash and … Read the rest


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