Super Fast RP2040 Testing with Teensy USB Host

We want to make lots of Feather RP2040s, so we can ship them to all the folks who are wanting them – so its important for us to make the test procedure super fast and simple. Thanks to Thach’s intrepid work with USB, we can now use the Teensy 3.6’s USB host support to ‘drag and drop’ a UF2 file over the USB interface to program it. At 100 KB/s, we can load our test program, verify all the hardware, and load a demo program all in under 2.5 seconds. When you’re making thousands of these boards, that time adds up so this will let us get you hardware faster! – video & Adafruit-Feather-RP2040-PCB/feather_test/ on GitHub.


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