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Balerion's avatar
Balerion
Icon for Occasional Contributor rankOccasional Contributor
4 months ago

Generic Quad SPI Controller-2 MT25QL01GBBB8E12 Write Problem.

Hi all,

I have a custom board which has two MT25QL01GBBB8E12-0SIT flash on it. One is connected to EPCQ Controller. In this one, I am using the Public API functions inside altera_epcq_controller.h and they work without any problem. Write, read, erase all working well. However my other flash is connected to Generic QUAD SPI Controller-2 and in this one, I am using the Public API functions inside altera_generic_quad_spi_controller2.h and my problem is that my read operations are working but my write operations are not working. The function returns 0 which means success but they just don't work I mean data is not written to the flash memory. I was thinking of putting another EPCQ Controller to the design however I got synthesize error that says only one epcq controller is allowed. Could you please help me about that?

Thanks,

Balerion

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1 Reply

  • Farabi's avatar
    Farabi
    Icon for Regular Contributor rankRegular Contributor
    3 months ago

    Hello,


    Few things you can check/do:

    1- Ensure WEL(Write Enable Latch) is set.

    2- It is common practice to Erase the Flash before you perform flash write.

    3- Verify the flash controller configuration is matching flash requirements :

    i- clock frequency

    ii- dummy clock cycles, address etc.


    regards,

    Farabi