hi,

i want to set up SPI on beagle bone AI.

i followed this link https://elinux.org/BeagleBone_Black_Enable_SPIDEV

but it doesnt work as this step fails: 

 echo BB-SPI1-01 > /sys/devices/bone_capemgr.*/slots


Also config-pin utility doesnt work. it says Pin mux file not present.


Can anyone provide step by step procedure ?



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