2025-03-22 11:40 PM - last edited on 2025-03-24 7:42 AM by Andrew Neil
Hi all
im using the STM32L4R9AI evaluation board ,with IS66WVH8M8BLL HyperRam memomry.
with the help of AN5050 i try to communicate with this device in memomry map mode
and also toke for reference the memory map mode in STM32CubeH7 package (https://github.com/STMicroelectronics/STM32CubeH7/tree/master/Projects/STM32H735G-DK/Examples/OSPI/OSPI_HyperRAM_MemoryMapped))
i notice that during my memoey allocation operation the MCU not putting the data in the desire location and it not working as expected.
the behavior that i saw in that the data was written into the device but not in order.
Is it due to this device in PSRAM ?
i saw at ERRATA es0393-stm32l4rxxx @ 2.8.22 that OSPI not supported in PSRAM ,
but i am working with the HyperBus and also in the device DS also noted that it
using a self-refresh DRAM array organized ( so it is not regular PSRAM )
please see below my code that i'm using.
the FREQ is 120 MHz..
please find attached my code ,INIT, HperRam Device
appritiate any support
BR Alex
Solved! Go to Solution.
2025-03-23 5:05 AM
2025-03-23 5:05 AM
resolved. follow AN5050