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      • How can the network know the node has left the network?

        Hello, if a node brocast nwk leave message when it restored facotry settings,other devices(such as gateway) can know it leave?
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      • I have a question about EFM8BB3.

        Hi, 

        I am developing an optical sensor using EFM8BB31F64G-B-QFN32.  

        when I checked the EFM8BB3 datasheet. 

        I can not find the information on the Output High Voltage Max value.

         

        The picture below is Port I/O of EFM8BB3 DataSheet.

        what is the Output High Voltage Max value?

        Please, answer about my question.

        Thank you.

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      • cannot open source file "em_device.h"

        Hi. I am compile  the file "an0062-efm32-programming-guide.zip" by IAR for ARM,but appear

        Fatal Error[Pe1696]: cannot open source file "em_device.h" E:\XZ\an0062_efm32_programming_guide\src\programmer\dap.c 39    and  Fatal Error[Pe1696]: cannot open source file "E:\emlib\src\em_cmu.c" 
         

        Help me, please

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      • Zigbee - *.ebl file is not generating in simplicity studio

        Hi,

        I am developing zigbee based application for ETRX357 using simplicity studio V4.

        After clean and build all, *.ebl file is not generated.

        And getting following message at the end of the build.

        make --no-print-directory post-build
        cmd //c C:\SILICO~1\SILICO~1\573~1.0-G/app/builder/xyz/xyz.bat xyz ..
        The system cannot find the path specified.
        make[1]: [post-build] Error 1 (ignored)

         

         

        Zigbee SiliconLabsEmberZNet/5.7.3.0-GA SoC

        IAR ARM tool chain used is V7.30.1.

        ISA3_Utilities_4.9.3_2

        Ember Desktop Version: 3.3.1985 (Beta)

         

        Kindly guide me how to resolve the issue.

        Thanks & Regards,

        Sundar.A

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      • 3 channels ,PWM , resonance frequency


        Please help me to find a   PWM  solution ( evaluation boards /power module) with this caracteristics :

        - control/adjust   frequencies from software

        - feeadback option   /spectrum analyzer to find resonance frequency

        -3 channels with difrent  frequencies   (42.8 KHz, 21.4 KHz and 10.7 KHz )

        - Adjustable Duty cycle  /pulse with 2.5%,5%, 10%  ,    fall time     <=20nS

        -Up to 500 Wattpwm

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      • Configuring BGM113 with an external MCU (which is interfaced with sensors) via UART

        Hello,

        I need to configure BGM113 so that it receives sensor data from a MCU.

        The MCU is programmed in eclipse environment.

        I know BGM113 has an MCU within it, but for my application i just need to configure it and not program its MCU.

        Can you share some material describing how to configure it?

        Also which tool to use? 

        Thanks in advance,

        Pradeep

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      • HOW TO: Getting Started from Scratch

        I'm a long time developer wanting to dip my toes into electronics/firmware.  I bought an EFM8UB3 development board and want to start playing with it.  I can run simple demos, however I'm obviously still missing some basic knowledge as understanding how to start a project from scratch is baffling me.  There are 100s of different documents/resources available, however most seem to expect you to already know a ton around firmware development.  Where is documentation around how to reference PINs, or documentation on the standard library available to firmware developers.  Any advice would be greatly appreciated.  Guessing at what globals, variables, functions are and what they do and what order they should be called is frustrating me at the moment.  Thanks in advance.
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      • PAIRING ISSUE WITH ANDROID PHONE AND BGM111

        I am using BLE Scanner app for pairing the android phone with BGM111.The problem arise is that certain time  password enter menu open up but certain time the menu vanished before entering pairing code.I am always trying to pairing after forgetting the bgm111 name in my android phone,but same result happen. Any solution??.

        here is my code

        switch (BGLIB_MSG_ID(evt->header)) {
              /* This boot event is generated when the system boots up after reset.
               * Here the system is set to start advertising immediately after boot procedure. */
              case gecko_evt_system_boot_id:

                /* Set advertising parameters. 100ms advertisement interval. All channels used.
                 * The first two parameters are minimum and maximum advertising interval, both in
                 * units of (milliseconds * 1.6). The third parameter '7' sets advertising on all channels. */
                gecko_cmd_le_gap_set_adv_parameters(160, 160, 7);

                /* Start general advertising and enable connections. */
                gecko_cmd_le_gap_set_mode(le_gap_general_discoverable, le_gap_undirected_connectable);
                gecko_cmd_sm_delete_bondings();
                gecko_cmd_sm_set_bondable_mode(1);
                gecko_cmd_sm_configure(0xff, sm_io_capability_displayonly);
                gecko_cmd_sm_set_passkey(123456);
                break;
              case gecko_evt_le_connection_opened_id:
                   gecko_cmd_sm_increase_security(evt->data.evt_le_connection_opened.connection);
                   break;

         

        gatt.xml

         <!--Generic Access-->
            <service advertise="false" name="Generic Access" requirement="mandatory" sourceId="org.bluetooth.service.generic_access" type="primary" uuid="1800">
              <informativeText>Abstract: The generic_access service contains generic information about the device. All available Characteristics are readonly. </informativeText>
              
              <!--Device Name-->
              <characteristic id="device_name" name="Device Name" sourceId="org.bluetooth.characteristic.gap.device_name" uuid="2A00">
                <informativeText/>
                <value length="13" type="utf-8" variable_length="false">Empty Example</value>
                <properties bonded_read="true" bonded_read_requirement="optional"/>
              </characteristic>
              
              <!--Appearance-->
              <characteristic name="Appearance" sourceId="org.bluetooth.characteristic.gap.appearance" uuid="2A01">
                <informativeText>Abstract: The external appearance of this device. The values are composed of a category (10-bits) and sub-categories (6-bits). </informativeText>
                <value length="2" type="hex" variable_length="false">0000</value>
                <properties authenticated_read="true" authenticated_read_requirement="optional" const="true" const_requirement="optional" read="true" read_requirement="optional"/>
              </characteristic>

        I have also attached whole project.plz suggest the solution..

         

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      • Problem with CP2201 at low temperature

        Hi! We use your CP2201 ethernet controller in our new design and we have a problem with working on the low temperature.
        According to oscillogram, the RST signal (RST# pin) rises to high state at least 20 sec after the power (+3.3V) has been started.
        We don't use external control for this signal during that test. We noticed that the time between start of +3.3V and rising of RST is approximately 20 sec at -15C,
        40 sec at -30C and 2 min at -45C. Could you help us with that problem?
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      • I lead the Silicon Labs Bluetooth marketing. Ask Me Anything.

         

        Hi,

         

        I’m Mikko, a senior marketing manager responsible for Bluetooth products at Silicon Labs and I’m excited to introduce our new Bluetooth 5 portfolio. These products help designers implement Bluetooth 5 compliant products and applications fast.

         

        I’m here to answer any questions about the Blue Gecko Bluetooth SoC, Modules or Software, Bluetooth 5 or any other Bluetooth related topics so ask me anything!

         

        I will check your questions once a day and answer them until 21st July.

         

        - M i k k o

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      • I lead the Silicon Labs IoT Business. Ask Me Anything.

        Hi Everyone, I'm the SVP/GM responsible for all MCU, Wireless, and Sensor Products at Silicon Labs. This includes everything from high level strategy down to all product roadmaps and features. I want to make myself available to the community to ask questions. As they come in, I'll respond to them here. I'll answer all questions through the end of August.

         

        Have fun.

         

        [edit: I'm going to log on 1-2x per day and answer questions until the end of August]

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