Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32l1/STM32L100/LCD/SR#0x0
status register
LCD enabled status
Start of frame flag
Update display request
Update Display Done
Ready flag
LCD Frame Control Register Synchronization flag
https://github.com/modm-io/cmsis-svd-stm32