不够OEM 全面
select a.inst_id,a.time_since_last_wait_micro,a.last_call_et,a.sql_id,a.sql_hash_value, a.username,a.pdml_enabled,a.pdml_status ,a.prev_sql_id from gv$session a where a.statusACTIVE and a.sql_id is not null and a.username is not null select …
说实话,我非常想吐槽 STM32 的 USB device library,总感觉很混乱。
USB Device library architecture
根据架构图: Adding a custom class
如果你想添加新的设备类,必须修改的文件有
usbd_desc.cusbd_conf.cusb_device.c
需要…