[SOLVED] Example Program 'Hello World' can't stop

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  • [SOLVED] Example Program 'Hello World' can't stop

    Hi,
    I'm new to use J-link as the development board. Now I am using Spansion S6E2CC with J-link EDU.
    The board is connected, but when I just try the FM4 Samples files. The debugger is weird.
    I run the file "Hello world"
    which the source code is:
    int main(void) {
    int i;

    for (i = 0; i < 100; i++) {
    printf("Hello World %d!\n", i);
    }
    do {
    i++;
    } while (1);
    }

    the loop stuck in i=63 which shown in the attachment
    Do anyone know where the problem is?
    Thanks!
    Images

    • segger debug error.PNG

      128.46 kB, 1,936×1,033, viewed 595 times

  • Hello,

    Thank you for your inquiry.
    The application does not stop. For printf this example uses SEGGER RTT which uses a buffer on the target as a I/O channel to J-Link.
    The default buffer is 1 kB in size. Depending on how fast the target device is this can be filled up faster than the J-Link reads it out.
    To avoid this you can e.g. increase the buffer size in the SEGGER_RTT_Conf.h file. Simply increase the value for BUFFER_SIZE_UP to e.g. 2048 and you should now see all 100 prints in the buffer.

    Best regards,
    Nino
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