LCD is too slow in STM32F439 with FMC

[ali]

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

[Tesla DeLorean]

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.

[ali]

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]

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.