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Issue opening MasterEmulator

Jim Hewitt

I've been testing my application and am having an issue opening MasterEmulator sometimes. I need to reseat the nfr51 dongle to clear out the errors I am seeing below. Any way I can avoid this.

2;14:43:17.8762 [MainThread] Initialize
MasterEmulator, Version=2.1.13.14, Culture=neutral, PublicKeyToken=null
3;14:43:18.0262 [MainThread] 680361820 - COM15
4;14:43:18.3362 [MainThread] Open
5;14:43:18.3462 [MainThread] 680361820 - COM15
6;14:43:18.5862 [MainThread]  - - Start of script: (2017-02-06 20:43:18) - - 
7;14:43:18.5962 [MainThread] 
<reportfile:"C:\ProgramData\Nordic Semiconductor\MasterEmulator\log.txt"/>
8;14:43:18.6262 [MainThread] Device: COM15
9;14:43:18.6362 [MainThread] HciJLinkDriver opened (COM15, 1000000-8-None-1-RequestToSend)
10;14:43:18.6562 [MainThread] 680361820 - COM15
11;14:43:20.0472 [MainThread] HCI command: BTLE_CMD_READ_BD_ADDR
12;14:43:20.0672 [MainThread] Serial port write: 01-09-10-00
13;14:43:21.6072 [MainThread] Exception: No response from master emulator
14;14:43:21.6072 [MainThread] Could not read device address.
15;14:43:21.6172 [MainThread] HCI command: NRF_CMD_GET_VERSION_INFO
16;14:43:21.6272 [MainThread] Serial port write: 01-06-FC-00
17;14:43:23.0372 [MainThread] Exception: 
18;14:43:23.0372 [MainThread] Could not read controller version info.
19;14:43:23.0572 [MainThread] HCI command: BTLE_CMD_LE_READ_BUFFER_SIZE
20;14:43:23.0672 [MainThread] Serial port write: 01-02-20-00
21;14:43:24.4873 [MainThread] Exception: 
22;14:43:24.4873 [MainThread] Could not read buffer size.
  • 0

    Hi Jim,

    May I ask what are you using the MasterEmulator for?

    Its a known issue that the Master Emulator firmware running on the nRF51 dongle may freeze/hang from time to time and that a reset of the dongle is required.

    When you say that you have to reset the dongle do you mean performing reset using nrfjprog -r or unplugging and reinserting the nRF51 dongle in your computer?

  • 0

    @Bjørn I am testing a device that is running on an nRF52832. Basically, I'm testing with both a C# console app and a C# WPF application. The console app seems to behave better that the WPF app. The issue will occur sometimes when I restart the application. Tried Open(), Close(), Reset() variations and they don't seem to help. The only fix is to unplug/reinsert the dongle. Part of the issue may be running the application in the VS debugger and terminating the app while tracing breakpoints and then restarting. I am having better luck when running the application outside of VS.

  • 0

    Generally, we recommend using the pc-ble-driver, available here on our GitHub page, as it is more stable and the fact that there will not be any further development of Master Control Panel and its .dll. However, if that is not an option, then you can try to switch to the Segger J-Link v5.10n firmware as it has shown to more stable. We also have customers using the MCP dll for production testing and some have used a Yepkit USB Switchable Hub to power cycle the nRF51 Dongle from code to resolve this issue.

  • 0

    Using pc-ble-driver and calling error_code = sd_rpc_open(m_adapter, status_handler, ble_evt_dispatch, log_handler);, I get Failed to open nRF BLE Driver. Error code: 0x0D,

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