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  • Linux UART stops to listen

    jcady92 - - emUSB related

    Post

    Hi Yan, Ah, I see that you are correct. I forgot to use the newest software for the PCA10000. I went ahead and flashed the latest firmware (2015 Aug 28 19:26) and tested it. Unfortunately, the rabbit hole continues. The PCA10000 using the latest Aug 28, 2015 firmware does not exhibit the serial problems that are exhibited in the firmware for the PCA10031 from the same date. In other words, the problem is unable to be reproduced on the PCA10000 entirely. Perhaps the bug was only introduced in the…

  • Linux UART stops to listen

    jcady92 - - emUSB related

    Post

    Hi Yan, I finished the test programs for you today. In my testing I had some very interesting findings. Here they are: I tested (for sanity's sake) using the NRF51-Dongle (PCA10031) again and, as expected, it exhibited the serial failures. Then I tested using the NRF51822 USB Dongle (PCA10000) and could not reproduce the serial failure (perhaps this is why you are having trouble reproducing it). I was pretty interested in why this was happening, so I took a closer look at the firmwares on the bo…

  • Linux UART stops to listen

    jcady92 - - emUSB related

    Post

    Quote from SEGGER - Yan: “Hi Jay, Unfortunately we do not have a PCA1003, but we have a couple of PCA10000 dongles. Would this also work? Also we only have Raspberry Pi V1, but I assume the application would work on that as well. A test program would be much appreciated. There is only one thing which is not quite clear to me, you write: Quote: “ It occurs about 15-20% of the time when booting the system. ” Does this mean that the issue only occurs right after booting the system? Or does this mea…

  • Linux UART stops to listen

    jcady92 - - emUSB related

    Post

    Quote from SEGGER - Yan: “Hello jcady92, We are having serious trouble reproducing this on our side. Could you please provide a few details about your setup? (GNU/Linux Distribution, J-Link version, firmware string (shown when you start the jlink commander), method of communicating with the UART from GNU/Linux.) When exactly does the issue occur? Regards, Yan” Hi Yan, Thank you for your response. Let me get you that information: Device: NRF51-Dongle PCA10031 v1.1.0 with S110 v8.0 softdevice. J-L…

  • Linux UART stops to listen

    jcady92 - - emUSB related

    Post

    This looks like the same problem as well: nRF51822 Linux Driver Source Code

  • Linux UART stops to listen

    jcady92 - - emUSB related

    Post

    Quote from SEGGER - Yan: “Quote from jcady92: “I have the exact same problem! The UART communication through the virtual COM for the J-Link MCU on my NRF51-Dongle fails maybe about 20%. I can receive data from it just fine, but it cannot receive any data from me. Any solutions?” Hello jcady92, We are currently looking into this, we will post here as soon as we have any news. Regards, Yan forum.segger.com/index.php?page=User&userID=5289” Hi Yan, Thanks for looking into this. I contacted Nordic di…

  • Linux UART stops to listen

    jcady92 - - emUSB related

    Post

    I have the exact same problem! The UART communication through the virtual COM for the J-Link MCU on my NRF51-Dongle fails maybe about 20%. I can receive data from it just fine, but it cannot receive any data from me. Any solutions?