[SOLVED] Data Breakpoint expressions

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  • [SOLVED] Data Breakpoint expressions

    Hello,
    I'm debugging my application for nrf52840 and trying to use a data breakpoint mechanism. But faced with some not understanding.

    I want the breakpoint to work according to the condition “the value of the variable is greater than” and I write the following expression:

    my_variable > 0xfe

    and it's not work. A breakpoints isn't active in breakpoints window.

    but another expression my_variable == 0xfe is worked.

    What am I doing wrong when describing a condition? I did everything according to the documentation (Embedded Studio for ARM Reference Manual, Breakpoint expressions).

    I use SES v4.18.

    p.s my_variable - it's uint32_t varible

    thanks,
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  • Hello,

    Thank you for your inquiry.
    This behaviour is expected as Cortex-M targets only support data breakpoints with masked conditions e.g. ==.
    So this is unfortunately a limitation of the target device you are using as explained in the Embedded Studio manual.

    Best regards,
    Nino
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  • Good day,
    Thanks, I did not immediately see your answer, I apologize.

    the following construction works:
    (uint32_t *) 0x20008948> 0x3c, where 0x20008948 - address of interesting variable.

    Best regards,
    Maxim