COSMIC and OPTION_BYTE

[tfeuerstein]

Posted on March 30, 2011 at 15:48

COSMIC and OPTION_BYTE

[brazov22]

Posted on May 17, 2011 at 15:12

A solution can be to embedd C source code for option byte programming at the beginning of your project:

/* Define FLASH programming time */

    FLASH_SetProgrammingTime(FLASH_PROGRAMTIME_STANDARD);

 /* Unlock Data memory */

    FLASH_Unlock(FLASH_MEMTYPE_DATA);

/* Program value and complement value at adress and address + 1 */

    FLASH_ProgramByte((add), val);

    val_comp = (u8)(~val);

    FLASH_ProgramByte((add + 1), val_comp);

 brazov2

Hello all !

I'm trying to preinit my MCU's OPTION_BYTE to create a binary with the OPTION_BYTE allready set !

This work fine with a assembly file in Ride7 with raisonnance compiler, but now i'm trying to do the same thing with ST Visual Develop and Cosmic compiler but I don't work !

Of course a find pseudo-solution, but I want a solution without modifying the linker command file (this isn't a profesionnal solution !)

I don't agree with the other solution trough STVP, because my code will be shared I prefer something in a assembly file or C source to avoid mistake instead of a extra manipulation ! And I prefer something who work in debug mode too !

Please help me !

[brazov22]

Posted on May 17, 2011 at 15:12

typo error: instead of FLASH_ProgramByte use FLASH_ProgramOptionByte

brazov2

From: brazov.ajeje

Posted: Thursday, March 31, 2011 11:39 AM

Subject: COSMIC and OPTION_BYTE

A solution can be to embedd C source code for option byte programming at the beginning of your project:

/* Define FLASH programming time */

    FLASH_SetProgrammingTime(FLASH_PROGRAMTIME_STANDARD);

 /* Unlock Data memory */

    FLASH_Unlock(FLASH_MEMTYPE_DATA);

/* Program value and complement value at adress and address + 1 */

    FLASH_ProgramByte((add), val);

    val_comp = (u8)(~val);

    FLASH_ProgramByte((add + 1), val_comp);

 brazov2

[tfeuerstein]

Posted on May 17, 2011 at 15:12

Thanks but I found by myself what i'm looking for !

Here is my code :

#pragma section const {OptionByte}

    const struct OPT_struct OPTION_BYTE = {0x00, 0x00, 0xFF, 0x02, 0xFD, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF, 0x00, 0xFF};

#pragma section ()

You need to add this new section in your lkf file, forget hand modification, goto Project -> Settings -> Linker -> Category : Input

Add a Segment and add a sub section, enter address of start and end.

Set the option of the section to -k to avoid linker optimisation, the linker will keep this unused section.

The final binary fille will include the OPTION_BYTE set according to your need !