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TMS570LC43x HDK , Problem with on board SDRAM configuration

jinus zhang
Intellectual 340 points

Other Parts Discussed in Thread: HALCOGEN, RM57L843, TMS570LC4357

Hello everyone，

I am trying to get the SDRAM to work on our Hercurles HDK，and I am referring to the following link：http://e2e.ti.com/support/microcontrollers/hercules/f/312/t/237341

After the configuration is complete，i download program into internal Flash.

I try through the debugger (CCSv6) to modify the value of the SDRAM (address 0x80000000), but the value does not change!!!

What is the difference between RM and TMS570,，and which configuration step needs to be modified？THANKS

  • 0
    TI__Guru 72500 points
    The main difference between the RM57L843 and the TMS570LC4357 is that the RM57 is little endian and the TMS570LC4357 is word invariant big endian (be32). This changes how bytes are addressed in structures used to describe registers, but that is already accounted for if you use the HALCoGen created include files. It also has an implication on how you would hookup external flash to the EMIF. It does not impact you if you hookup RAM to the EMIF.
  • 0 in reply to Bob Crosby
    Intellectual 340 points

    Hello Bob,

    Thanks for your answer.

     I found the problem. I forget to enable EMIF_CLK output, and the configuration option is here in HALCoGen 4.04：

    I now have the full SDRAM up running.

    Thanks！

    Best Regards

    jinus