sigrok-cli --driver saleae-logic16 --samples 10M --config samplerate=5mhz \
-p 0=UNI1,1=UNI2,2=UNI3,3=UNI4 -o ws281x_4ch_5mhz.sr
sigrok-cli --driver saleae-logic16 --samples 10M --config samplerate=5mhz \
-p 0=UNI1,1=UNI2,2=UNI3,3=UNI4 -o ws281x_4ch_5mhz.sr