Posts by hotbrix

  • Problem with multiple format arguments when using SEGGER_RTT_printf

    Hi

    I have the following:

    SEGGER_RTT_printf(0, "midnight_tick: last: %u, now: %u\r\n", last, now);
    SEGGER_RTT_printf(0, "midnight_tick: now: %u, last: %u\r\n", now, last);

    This prints:

    midnight_tick: last: 10957, now: 0
    midnight_tick: now: 10957, last: 0

    Note that the second argument is always printed as 0 but none of the args is 0. There is no concurrency involved, the arguments last and now dont change between the two calls.


    Sorry, if I am missing something trivial ...

    Kind regards
    Peter

  • [SOLVED] Segger RTT via Telnet

    Hi Fabian

    I apologize if my wording is not precise, I am new to this field.
    Yes, with "uploading the firmware" I mean programming the device.

    And I am using JLinkExe on Linux to do this with a JLink plus compact.
    What I am doing is a kind of unit testing:

    - compile and build the test ( I use platform.io and VSCode)
    - upload the binary with the following commands:

    ===================
    > /usr/bin/JLinkExe -NoGui 1 -CommandFile ./upload.jlink

    > cat ./upload.jlink
    device ATSAMD21G18A
    si SWD
    speed 4000
    connect
    exec SetVerifyDownload = 0
    loadbin .pio/build/target_test_wm_min/firmware.bin, 0x2000
    r
    h
    q
    ===================

    Note that I quit (q) the connection at the end to be able to do this over and over again.

    After the upload, I run the unit tests:
    - connect to the telnet server with a telnet client
    - interact with the target via RTT.
    - reset the target
    - next test ....

    All this works very well and fast, and I am very pleased. Embedded programming starts to look like Java desktop.

    BUT: As I understand it, for this to work, I need to open _another_ connection (lets call it perma-connection) to the target that I keep open indefinitely ( until I stop work on the project)

    ========================================
    > JLinkExe -NoGui 1 -CommandFile ./connect.jlink
    > cat ./connect.jlink
    device ATSAMD21G18A
    si SWD
    speed 4000
    connect
    ==============================================

    Note that there is no q at the end.

    So during target programming I have to parallel connections, during unit testing with the telnet client I use only the perma-connection to maintain the telnet socket.

    Sorry if this sounds contrived.

    As far I understand you, there is no way around this. I need the perma connection to stay open in order to be able to connect to the server.

    Kind regards
    Peter

  • [SOLVED] Segger RTT via Telnet

    Hi Alex

    The optimal way for me would me:

    - upload the firmware
    - while doing so, start the telnet server
    - disconnect from the target, but keep the telnet server open
    - let me connect to the telnet server to interact with the target (testing)
    - let me upload firmware again, without stopping the telnet server.

    maybe this is something that could be achieved with your SDK ?
    Kind regards
    Peter

  • [SOLVED] Segger RTT via Telnet

    Hi
    Following up on a previous thread with the same title, I have the following scenario:

    I have a telnet client in order to collect RTT output for unit testing.

    In order to open the JLink telnet server, as I understand it, I first need to create the server, for example by connecting to the target first:

    JLinkExe -NoGui 1 -CommandFile ./connect.jlink

    Code
    > cat connect.jlink
device ATSAMD21G18A
si SWD
speed 4000
connect


    This connecdts to target and keeps the connection open.

    I then run commands likes this:

    JLinkExe -NoGui 1 -CommandFile ./test_rgb.jlink

    Code
    > cat test_rgb.jlink
device ATSAMD21G18A
si SWD
speed 4000
connect
exec SetCompareMode = 0
loadbin .pio/build/test_rgb/firmware.bin, 0x2000
r
q


    This works, but I wonder if this is supposed to be the way to use third-party applications to interact with RTT.
    There must be a simpler way ?

    Kind regards
    Peter

  • [SOLVED] How to skip flash erase

    Hi , I have the following script:

    Code
    cat ./myupload.jlink
device ATSAMD21G18A
si SWD
speed 4000
connect
exec SetCompareMode = 0
loadbin .pio/build/mkrwifi1010/firmware.bin, 0x2000
r
q


    which I run like so:

    JLinkExe -NoGui 1 -CommandFile ./myupload.jlink

    As you can see, I disabled the compare step, and I would like now to disable also the erase step ( to speed up the operation).
    How can this be done ?

    Kind regards
    Peter

  • [SOLVED] Linux IDE

    Hi
    I would like to run unit tests for my native linux apps in the SEGGER Linux IDE.
    For example with googletests or https://github.com/ThrowTheSwitch/Unity .
    The latter , when used in platform.io produces colored output like this:

    Processing test_host in native environment
    -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
    Building...
    Testing...
    test/test_host/test_h_statefct.cpp:113: test_single [PASSED] <== GREEN
    test/test_host/test_h_statefct.cpp:114: test_clear [PASSED]
    test/test_host/test_h_statefct.cpp:115: test_add_one [PASSED]
    test/test_host/test_h_statefct.cpp:116: test_systick [PASSED]
    test/test_host/test_h_statefct.cpp:117: test_program [PASSED]

    -----------------------
    5 Tests 0 Failures 0 Ignored
    OK

    How I can get this in the SEGGER IDE. In fact , for the moment , I have no output at all, after I build the app, nothing seems to happen. However, an executable has been produced that I can run from a linux terminal.

    Kind regards
    Peter