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Update README, regarding WiringPi on Pi 4B

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Ragnar Jensen 2020-05-19 20:31:45 +02:00 committed by GitHub
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@ -6,6 +6,7 @@ netledPi blinks a LED connected to a GPIO pin when there is activity on any netw
actledPi blinks the Pi's ACT led on all mass storage I/O, i.e. not only the SD card.
netledPi and hddledPi make use of Gordon Henderson's wiringPi library - wiringpi.com - so you have to have that installed in order to build the programs. Current versions of Raspbian come with wiringPi already installed.
EDIT 2020-05-19: It seems like the Pi 4B needs WiringPi 2.52. At the time of writing this, Raspbian comes with 2.50, i.e. you'll have to update WiringPi if you are on a Pi 4B. http://wiringpi.com/wiringpi-updated-to-2-52-for-the-raspberry-pi-4b/
Building the programs is easy:
gcc -Wall -O3 -o netledPi netledPi.c -lwiringPi