Hardware reset into Lua prompt

[owenduffy]

It would be really convenient if there was a dialogue button dedicated to hardware reset to Lua prompt based on the common scheme of a init.lua that bales out on gpio.read(3) == 0.

The button would assert RTS for say 500ms, release it and say 200ms later assert DTR for 5000ms and release it.

This is equivalent to pushing the /RST and FL buttons on the board, but they might be be readily accessible.

I note that this reset scheme does not work as commonly wired in articles on the net, but connecting a diode cathode to GPIO16 and anode to /RST does work on the dev kit boards I have on hand. (Detailed explanation at http://owenduffy.net/blog/?p=10024 .

Owen

[stale]

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