// Initialize the transmit and receive buffers.
// 初始化USB BLIK接收和发送数据缓冲区
USBBufferInit((tUSBBuffer *)&g_sTxBuffer);
USBBufferInit((tUSBBuffer *)&g_sRxBuffer);
// Pass our device information to the USB library and place the device
// on the bus.
// tUSBDBulkDevice定义的是批量设备的操作参数
// 包括供应商ID,PID,设备功耗,字符串描述符等
USBDBulkInit(0, (tUSBDBulkDevice *)&g_sBulkDevice);