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Commit 1048a3b8 authored by Alan Carvalho de Assis's avatar Alan Carvalho de Assis Committed by Gregory Nutt
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drivers/sensors/hc_sr04.c: Replace busy wait with semaphone. Using this... 

drivers/sensors/hc_sr04.c: Replace busy wait with semaphone.  Using this solution we don't need 60ms delay.
parent 169c55e5
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