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USB! I’ve tried and failed couple times in understanding how USB works under the hood, from electrical, to protocol, then classes, and also Power Delivery. This
by poyu 2y ago
USB! I’ve tried and failed couple times in understanding how USB works under the hood, from electrical, to protocol, then classes, and also Power Delivery. This time around things seem to make more sense now. It started out as an ambitious goal to emulate an FTDI USB DMX converter with the ESP32-S2/S3, but realizing that might be too big a goal, so I’m starting small. I want to be able to make a custom device class on the ESP32, and write a driver with libusb.
- umvi 2y agoUSB is a frighteningly deep rabbit hole. I thought it was going to be easy when I first dipped my toes into the USB stack but boy was I in for a shock.
- datavirtue 2y agoI had a peek at the USB spec recently, no desire. I thought it would be trivial to even just enumerate USB devices on a Windows box. It is not.