Disable FSMC in Stop mode

[guenniause]

Posted on July 11, 2017 at 09:32

Hi,

I'm using Stop mode on a custom board with STM32F207. There is a SRAM on the board for data storage.

I turn off SRAM in Stop mode, to reduce power consumption. Now I want to disable the FSMC of SRAM too. Therefore I use the function HAL_SRAM_DeInit before entering Stop mode. After leaving the Stop mode I reinitialize the FSMC by using HAL_SRAM_Init.

After reinitialization the FSMC doesn’t work correctly and I can’t access SRAM.

Is there a different way to disable FSMC?

Thanks in advance

Guenter

[ranran]

Hi Guenter,

Is it solved ? I have similar needs.

by the way, If you stop external sram (FSMC), isn't it problematic for your application ?