any good suggestion？ ? hope for your response asap.
I didn’t test the HID like that. I am thinking you may reach the data rate limitation of the HID class.
which BSP are you using?
cat /proc/version Linux version 220.127.116.11-571-gcca29a0 (root@ubuntu) (gcc version 4.4.4 (4.4.4_09.06.2010) ) #92 PREEMPT Wed Oct 25 02:47:46 CST 2017