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CC2530 Linker error for XDATA size

MilkyWay 05
Intellectual 425 points

Other Parts Discussed in Thread: CC2530, CC2531

Hello,

I have got a problem when i tried to send random data to RX.

Error[e16]: Segment XDATA_I (size: 0x2a2f align: 0) is too long for segment definition. At least 0xe00 more bytes needed. The problem occurred while processing the segment placement 
command "-Z(XDATA)XDATA_Z,XDATA_I=_XDATA0_START-_XDATA0_END", where at the moment of placement the available memory ranges were "XDATA:2d1-1eff"
   Reserved ranges relevant to this placement:
   XDATA:1-100          XSTACK
   XDATA:101-1eff       XDATA_Z
   BIT:0-7              BREG
   BIT:80-97            SFR_AN
   BIT:a0-af            SFR_AN
   BIT:b8-c7            SFR_AN
   BIT:e8-ef            SFR_AN
   BIT:f8-ff            SFR_AN
Error while running Linker

Can i change this limitation ? If yes, how can i ?

Thanks in advance for your reponse.

Best regards,

  • 0
    TI__Mastermind 19350 points

    XDATA is the "RAM" space for the CC2530, so you have added to many or too big variables - remove some of the last variables that you added until your application can successfully link again - RAM is very limited on an embedded processor, it's not a PC. You can monitor your use of resources by inspecting the bottom of the .map file found in 'Output' folder as "NameOfYourApplication.map"


                    ****************************************
                    *                                      *
                    *        END OF CROSS REFERENCE        *
                    *                                      *
                    ****************************************

     152 489 bytes of CODE  memory
          32 bytes of DATA  memory (+ 74 absolute )
       6 844 bytes of XDATA memory
         192 bytes of IDATA memory
           8 bits  of BIT   memory
         457 bytes of CONST memory

    Errors: none
    Warnings: none

  • 0 in reply to Dirty Harry
    Intellectual 425 points

    Hi Dirty Harry,

    Thanks for your reponse. So, can't i change this value ?

    Br,

  • 0 in reply to MilkyWay 05
    TI__Mastermind 19350 points

    Change what value? You want to change the amount of RAM available in the system? On an embedded device, the amount of RAM, aka XDATA on this 8051-based SOC, is fixed ... on the CC2530F256, there is only a total of 8KB available. Take a look at the data sheet:

    http://focus.ti.com/lit/ds/symlink/cc2530.pdf

     

  • 0 in reply to Dirty Harry
    Intellectual 425 points

    Hi Dirty Harry,

    Thanks for the data sheet. i taked a look at this.

    But if i want transmit data more ... If i use the RAM as a buffer, can i do it ?

    Br,

     

  • 0 in reply to MilkyWay 05
    Guru 31280 points

    Hi MilkyWay 05,

    You may use the RAM as a buffer to transmit short chunks of data (lets say 120 bytes).

    ZigBee devices based on CC2530/CC2531 SoCs  that running Zstack are very short on

    available RAM for user's application.

    Anyway, keep in mind these numbers while setting any buffer length for your data:

    Coordinator Router EndDevice

        PRO SECURE Flash/RAM Flash/RAM Flash/RAM

       =====   =======    ==========   ========== ==========

        Off      Off 137.6K/6.6K     136.4K/6.6K 108.7K/5.0K

        Off      On 147.9K/6.6K 147.6K/6.6K 119.7K/5.1K

        On      Off 148.8K/6.7K 147.8K/6.7K 114.3K/5.1K

        On      On 159.2K/6.7K 159.0K/6.7K 126.2K/5.2K

    Best regards,

    Igtor.