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FAQ

How to put data in the Flash fixed address when compiling the program?  Issue Date：2016-08-29

  • In the Keil development environment 

    Use the following:

    const uint32_t Buf[1] __attribute__((at(0x1000))) = {0x12345678};

    Write data byte 0x12345678 into the address 0x1000. 

  • In the IAR development environment

    First, declare the constant SIG, and put the constant content 0x12345678 at the address specified by “Flash_Address”:

    /* Declaration of signature. Location of it is specified in scatter file. */

    const uint32_t SIG @ "Flash_Address";

    /* Definition of SIG signature. */

    const uint32_t SIG = 0x12345678;

    In the link file(*.scf) declare the address specified by Flash_Address. In the following example, specify 

    "Flash_Address" as 0x1000:

    place at address mem:0x1000  {section Flash_Address }; 

     

     

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Applications:
Function: Peripherals,Memory,APROM,Data Flash,LDROM,Software and Tools,Development-Environment,IAR,Keil

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