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Reply To: Pull up really needed?

OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › Pull up really needed? › Reply To: Pull up really needed?

September 29, 2021 at 7:45 pm #71304

Ray
Keymaster

You can use the internal pullup available on RPi. This is what OpenSprinkler firmware does:
https://github.com/OpenSprinkler/OpenSprinkler-Firmware/blob/master/gpio.cpp#L292
it calls the system’s gpio command to enable internal pullup. This requires wiringPi to be installed.

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