FUNC_BUTTONS
FUNC_BUTTONS, 0x1, 0x0, 0x0)) != 0 &&
(call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0) == 0x0)) {
while (call_fext_func(device, FUNC_BUTTONS, 0x1, 0x0, 0x0) != 0 &&
call_fext_func(device, FUNC_BUTTONS, 0x0, 0x0, 0x0));