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ali
ali
Associate II
April 16, 2014
Question

LCD is too slow in STM32F439 with FMC

  • April 16, 2014
  • 3 replies
  • 828 views
Posted on April 16, 2014 at 08:34

Hi to all,

I have a STM32F437ZI and I connected FMC to SSD1963 but LCD is refreshed slow rahter than FSMC. I previously run the same LCD with STM32F407 and I used the same code. I just all FSMC parts to FMC. Where did I go wrong?

thanks
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    3 replies

    Tesla DeLorean
    Tesla DeLorean
    Guru
    April 16, 2014
    Posted on April 16, 2014 at 17:05

    I just all FSMC parts to FMC. Where did I go wrong?

    Yeah, lots to work with their, please try again.
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    ali
    aliAuthor
    Associate II
    April 17, 2014
    Posted on April 17, 2014 at 06:09

    dear clive1,

    Could you give me some hints? I appreciate that. I looked on ST examples (SRAM) and I didn't see anything different

    Tesla DeLorean
    Tesla DeLorean
    Guru
    April 17, 2014
    Posted on April 17, 2014 at 17:35

    I'm a savant, not a psychic.

    What I think you need to do is present your current configuration code and settings.

    Then using a logic analyzer or oscilloscope look at the bus signalling/timing, and present that data. Compare and contrast the pulse widths on CS/CE and WR/RD signals with the settings you have programmed into the FMC/FSMC, and verify that your clock speeds are what you think they are.

    Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
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