How to capture DM serial port logs for Sierra Wireless EM/MC series cellular modules in Linux systems?
Question: How can we capture DM serial port logs for Sierra Wireless EM/MC series cellular modules in Linux?
Solution: In the Sierra Wireless QMI SDK downloadable archive there is a a DM log tool in the tools folder. Run the dmcapture.sh script with desired filter, and the ttyUSB0 (DM port) device selected. E.g. like this: sudo ./dmcapture.sh -l -d /dev/ttyUSB0 -o testlog -f ./filters/v11026_Generic_GSM_WCDMA_LTE_..Read more »
How can I enable DC voltage output for active GPS/GNSS antennas on modules that support this feature?
Question: How can I enable DC voltage output for active GPS/GNSS antennas on modules that support this feature?
Solution: This is enabled by the following AT commands: For Sierra Wireless EM/MC74 series (Output: 3.15V): AT!ENTERCND="A710" AT+WANT=1 For Sierra Wireless MC73 series (Output: 3.15V): AT!ENTERCND="A710" AT+WANTGNSSPWR=1 For Simcom (Max output 61*50mV = 3.05V): AT+CVAUXS=1 AT+CVAUXV=61Read more »
GPS fix not acquired on Sierra Wireless EM74-series modules?
Question: The Sierra Wireless EM74-series modules cannot get a fix on GPS/Satellite navigation system even if I have connected the antenna correctly?
Solution: The Sierra Wireless EM74-series modules can be adjusted to read the GPS signals from either the AUX/Diversity antenna connector or the dedicated GPS antenna connector on the module. This can be configured through the AT!CUSTOM commands: GPSSEL 0 = Use dedicated GPS antenna (Default) 1 = Use shared ..Read more »
Sierra Wireless EM7455 is not detected in the system when using the M.2 to USB adapter board
Question: Sierra Wireless EM7455 module is not detected in the operating system when using the M.2 to USB adapter board
Solution: For Sierra Wireless EM7455 you will have to change the state of the jumper JP1 on the board. This controls the Dynamic Power Control (DPR) pin in M.2 socket. You can either remove the jumper piece and leave all 3 pins not connected or set it low by connecting the pins 2 and 3 with the jumper piece..Read more »
What connection manager software to use for cellular modules in Windows?
Question: Is there any Windows connection manager software available for connecting cellular modules when running Windows?
Solution: For most cellular modules you can use Windows built in connection manager when you install the correct Windows drivers for the module. If you're using Windows 7, make sure to have the latest Windows updates also since the WWAN connection manager was not included in the initial release. For Sierra ..Read more »
How to install Huawei drivers in Windows 10 for modules with Qualcomm chipset?
Question: How to install Huawei drivers in Windows 10 for modules with Qualcomm chipset?
Solution: First install this driver from product page. Huawei drivers V.4.25.45.08 for Windows Afterwards open Windows Device Manager and locate HUAWEI named device(s) with warning sign that are not installed correctly. Right click on each of them and select update driver software... Select Browse my compute..Read more »
Sierra Wireless MC74-series module is not detected by the operating system
Question: Sierra Wireless MC74-series module is not detected by the operating system?
Solution: Not all miniPCIe interfaces can support USB 3.0 according to the pin configuration Sierra Wireless have chosen. USB 3.0 support is not defined in mPCIe standard by default and therefore conflicts can occur with some system boards even if the MC74 module will in most cases switch to USB 2.0 if 3.0 is..Read more »
Multiple network devices are shown in Windows for my Sierra Wireless module
Question: The Sierra Wireless MC7304 shows multiple connections in Windows. I only want to use one, is there a way to turn off the other?
Solution: Sending the following AT Commands to the modules AT COM interface will change the USB profile used and the second connection interface will be disabled. 1. AT!ENTERCND=”A710” 2. AT!UDUSBCOMP=6 3. AT!RESETRead more »
I can't get the GPS to work in MikrotikOS
Question: I have a Huawei module and I want to use the GPS. I can't get it to work. What shall I do?
Solution: In your MikrotikOS, make the following settings. Make sure that you have a USB port that you're going to send the GPS data over, then send /ports print This will give you a list over the active ports you can use. Note the name of your USB port. Now check what name the USB port have and make sure..Read more »
Baud rate for modules.
Question: What is the baud rate when communicating with a module through a serial interface?
Solution: The baud rate needs to be set to 9600bps when communicating with a module through a serial interface.Read more »