LibUSB should explicitly open device before reading
LibUSB should explicitly open device before reading

treehopper-electronics/treehopper-sdk,treehopper-electronics/treehopper-sdk,treehopper-electronics/treehopper-sdk,treehopper-electronics/treehopper-sdk,treehopper-electronics/treehopper-sdk,treehopper-electronics/treehopper-sdk