Meanwhile, installing HiPi and RPi::WiringPi has taken 6 hours so far and is still going

You don't need any of that for slow GPIO. Writing to files below /sys/class/gpio/ is completely sufficient. See Re: Controlling USB on Raspberry Pi and https://pinout.xyz/ for GPIO numbers.

Alexander

--
Today I will gladly share my knowledge and experience, for there are no sweeter words than "I told you so". ;-)

In reply to Re^10: Controlling USB on Raspberry Pi by afoken
in thread Controlling USB on Raspberry Pi by Bod

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