Frame Buffer on external SDRAM

zampierigabriele · ‎2016-10-17

Posted on October 17, 2016 at 21:16

Hi all, I'm developing a board that will host a 7'' to 10'' tft screen. The cpu on the board is a STM32F429. To store the data (frames) that the controller will puts on display I need to set up the system to use an external SDRAM that will do the job of ''frame buffer''. I use STcubeMX as code configurator and TrueStudio to develop my code (will migrate but this isn't the point). My question is: after I configured the FMC to interact with external SDRAM, should I write an ad-hoc linker script? is there any frame buffer example that use, maybe, LL library?

Thanks in advance

#ldtc #sdram #!stm32f4

slimen · ‎2016-10-18

Posted on October 18, 2016 at 09:49

Hello,

You can start with FMC example which describes how to configure the FMC controller to access the SDRAM memory:

STM32Cube_FW_F4_V1.13.0\Projects\STM324x9I_EVAL\Examples\FMC\FMC_SDRAM

Have a look at the

http://www.st.com/content/ccc/resource/technical/document/reference_manual/3d/6d/5a/66/b4/99/40/d4/DM00031020.pdf/files/DM00031020.pdf/jcr:content/translations/en.DM00031020.pdf

(section: 37 Flexible memory controller (FMC)).

Regards

zampierigabriele · ‎2016-10-19

Posted on October 19, 2016 at 18:29

Thank you a lot for you replay, I'm going to check right now!

Regards,

Gabriele