使用Cherryusb host加载u盘后shell就不能输入了是为什么？

rt-thread 4.1.1stm32f429ig使用usb_otg_hs,做host_only。在Cherryusb中执行usbh_initialize后的logo为

[2023-08-29 11:28:35.783]# RECV ASCII>
[32m[I/USB] ========== dwc2 hcd params ==========
[0m[32m[I/USB] CID:00001100
[0m[32m[I/USB] GSNPSID:4f54281a
[0m[32m[I/USB] GHWCFG1:00000000
[0m[32m[I/USB] GHWCFG2:229ed590
[0m[32m[I/USB] GHWCFG3:03f403e8
[0m[32m[I/USB] GHWCFG4:17f00030
[0m[32m[I/USB] dwc2 has 12 channels
msh />
[2023-08-29 11:28:41.130]# RECV ASCII>
[32m[I/USB] New full-speed device on Hub 1, Port 1 connected
[0m[32m[I/USB] New device found,idVendor:abcd,idProduct:1234,bcdDevice:0100
[0m[32m[I/USB] The device has 1 interfaces
[0m[32m[I/USB] Enumeration success, start loading class driver
[0m[32m[I/USB] Loading msc class driver
[0m[32m[I/USB] Get max LUN:1
[0m[32m[I/USB] Ep=01 Attr=02 Mps=64 Interval=00 Mult=00
[0m[32m[I/USB] Ep=81 Attr=02 Mps=64 Interval=00 Mult=00
然后再输入任何shell命令都没有响应了。
请教大神那里不对了我已经把栈都加大了。