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memory map mode using Octal SPI with HyperBus on STM32L4R9AI eval board

Ach.1
Associate II

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

 

1 ACCEPTED SOLUTION

Accepted Solutions
Ach.1
Associate II

resolved. follow AN5050

 

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1 REPLY 1
Ach.1
Associate II

resolved. follow AN5050