An Initiator is a device that sends device service and task management requests to a target device and receives responses for the same requests from the target device.
发起者向目标设备发送设备服务和任务管理请求，并从目标设备接收对请求的响应。
After that, the target sends the status to the initiator.
在这之后，目标将状态发送给启动程序。
The initiator first sends commands to the target, which decodes the command and then may request data from the initiator or send data to the initiator.
启动程序首先向目标发送命令，然后目标解码命令并向启动程序请求数据，或将数据发送给启动程序。
应用推荐