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CC2640R2F: Calculation Memory Address

Vasu Khwanyuen
Intellectual 535 points
Part Number: CC2640R2F


Hi,

Memory map of CC2640R2F

I need calculate CRC in Flash Memory but I'm not sure to use address in range 0x0000 to 0x1FFFF.

Can you recommend to use address of flash memory for calculate CRC?

Thanks,

Vasu Khwanyuen

  • 0
    TI__Guru**** 219977 points

    Hi Vasu,

    Although not for your specific device, here is a code example of CRC32 calculation being used in a SimpleLink project.  The CC26x0 and CC26x2 bootloaders uses the CRC-32-IEEE 802.3 with the following polynomial to calculate CRC checksum:

    CRC32poly = x32 + x26 + x23 + x22 + x16 + x12 + x11 + x10 + x8 + x7 + x5 + x4 + x2 + x + 1 

    You can reference similar examples online for your development requirements.

    Regards,
    Ryan

  • 0 in reply to Ryan Brown1
    Intellectual 535 points

    Thanks Ryan Brown1,

    And area address from 0x0001FFA8 to 0x0001FFFF CCFG not change follow code file. It is config data from TI.

    I understand correct right?

    Thanks,

    Vasu Khwanyuen

  • 0 in reply to Vasu Khwanyuen
    TI__Guru**** 219977 points

    The Customer Configuration (CCFG) is available for the application to configure parameters for the ROM bootloader (ex backdoor boot pin selection/level) and device hardware (ex. frequency selection and crystal load).  This is fully configurable from a CC2640R2F project's CCFG file and can be modified by developers.  The FCFG is set by Texas Instruments during device production and contains device-specific trim values and configuration.  Please read more information from Chapter 9 of the TRM.

    Regards,
    Ryan