Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f7/STM32F722/OTG_FS_GLOBAL/OTG_FS_GRXSTSP_Device#0x0
OTG status read and pop register (Device mode)
Endpoint number
Byte count
Data PID
Packet status
Frame number
https://github.com/modm-io/cmsis-svd-stm32