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TM4C1294NCPDT: Does TivaWare implement the workaround for Tiva Errata ETH#02?

Jeff McDevitt
Expert 1775 points
Part Number: TM4C1294NCPDT

A quick search did not show any use of the #defined values:

#define FLASH_CONF_FPFON 0x00020000 // Force Prefetch On
#define FLASH_CONF_FPFOFF 0x00010000 // Force Prefetch Off

Thanks,

Jeff

  • 0
    TI__Guru**** 191256 points
    Hi Jeff,
    I also search and didn't see the errata workaround implemented in the TivaWare driver library and neither in TivaWare Ethernet examples . I think the errata occurs under corner circumstances. It is not that without the workaround, the Ethernet operation will always fail to start. With that said, I will suggest you implement the workaround to be on the safe side.
  • 0 in reply to Charles Tsai
    Expert 1775 points
    Charles,

    Thanks for the reply.

    Do you have any suggestions as to where to add this? The errata isn't clear as to what is meant by "Ethernet initialization". If I am using lwIP, does this mean I should disable prefetch before calling lwIPInit( ) and then enable it afterwards? Any suggestions would be helpful.

    Thanks,

    Jeff
  • 0 in reply to Jeff McDevitt
    TI__Guru**** 191256 points
    Hi Jeff,
    Yes, I will disable the prefetch before the LwIPInit and then re-enable after it.