[HN Gopher] Software defined USB port (Raspberry Pi pico RP2040) ___________________________________________________________________ Software defined USB port (Raspberry Pi pico RP2040) Author : childintime Score : 28 points Date : 2022-02-15 20:37 UTC (2 hours ago) (HTM) web link (github.com) (TXT) w3m dump (github.com) | tkanarsky wrote: | That's freaking awesome. For those unaware, the RP2040 | microcontroller has several Programmable IO (PIO) cores, which | are essentially standalone state machines that read/write | directly from memory to the GPIO pins. Unlike bitbanging the pins | with the CPU, you can implement much more timing-sensitive | protocols while reducing CPU usage at the same time. There's | demos of people implementing VGA out, digital audio, all sorts of | interesting protocols. ___________________________________________________________________ (page generated 2022-02-15 23:01 UTC)