event | held | old | new
press left | L | -32767 | -32767
press right | LR | +32767 | +32767
release right | L | 0 | -32767
press right | LR | +32767 | +32767
release left | R | 0 | +32767
press left | LR | -32767 | -32767
release right | L | 0 | -32767
release left | | 0 | 0
example: