accessorytest
用于host端对配件的数据读写,用法参考如下: Usage: -h [-a] [-h] [-ic input card] [-id input device] [-oc output card] [-d output device] [-a] [-h] [-i] [-s enable sound] [-rs read size] [-ws write size] -ic, -id, -oc and -od specify ALSA card and device numbers -a : enables AccessoryChat mode -i : enables HID pass through (requires running as root -h : prints this usage message