For read/write NOR flash using FMC interface, you can check the examples provided within the STM32Cube_FW.
For instance the one on the STM32L476G-EVAL, you can find it under the "...\STM32Cube_FW_L4_V.XX\Projects\STM32L476G-EVAL\Examples\FMC\FMC_NOR" root.
To get quick technical support on further threads, I advise you to provide detailed description concerning your question/problem, the setup you are working with, etc..
For read/write NOR flash using FMC interface, you can check the examples provided within the STM32Cube_FW.
For instance the one on the STM32L476G-EVAL, you can find it under the "...\STM32Cube_FW_L4_V.XX\Projects\STM32L476G-EVAL\Examples\FMC\FMC_NOR" root.
To get quick technical support on further threads, I advise you to provide detailed description concerning your question/problem, the setup you are working with, etc..