Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/Keil/AT32F407xx_v2/ADC2/STS#0x0
status register
Voltage monitoring out of range flag
Channels conversion end flag
Preempted channels conversion end flag
Preempted channel conversion start flag
Ordinary channel conversion start flag
https://github.com/cmsis-svd/cmsis-svd-data