How to use SDRAM as Data Memory??

Immanuel Raja · ‎2017-05-09

Posted on May 10, 2017 at 07:09

Hi guys,

i have tried placing SDRAM as data memory instead of internal RAM.But my code is getting into hardfault.what could be the reason??

I have attached the modified startup file and system_stm32f4xx.c,startup_stm32f439xx.s.

Nesrine M_O · ‎2017-05-10

Posted on May 10, 2017 at 10:39

Hi

raja.immanuel

,

I recommend you to start from ready example under the STM32F4 cube firmware package,

STM32Cube_FW_F4_V1.0\Projects\STM324x9I_EVAL\Examples\FMC\FMC_SDRAM_DataMemory

The example scenario provides the procedure to follow to use the external SDRAM as data memory.

-Nesrine-

AvaTar · ‎2017-05-10

Posted on May 10, 2017 at 10:50

I hope you verified you don't try to access the SDRAM before initializing it.

And have you checked / debugged that the SDRAM access works at all, at the assumed addresses ?

Immanuel Raja · ‎2017-05-10

Posted on May 10, 2017 at 11:04

Dear Avatar,

I have tried as per the STM32Cube_FW_F4_V1.0\Projects\STM324x9I_EVAL\Examples\FMC\FMC_SDRAM_DataMemory

I have replaced the same startup file and system_stm32fxxx.c and changed compiler settings as per that exaple.Eventhough the issue persist.

Regards,

Immanuel Raja

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