Reply To: OZZMAKER SARA-R5 serial port issues

[richardp]

Hi Alex

Sorry for taking so long to get back to you. We know have a fix and we would love to have your feedback.

1.make sure the kernel module n_gsm is running
sudo modprobe n_gsm

2. pull down the new mux software, enter into the directory and make

git clone https://github.com/ozzmaker/gsmmux
cd gsmmux
make

You may get some warnings, you can ignore these.

3. Run gsmMuxd, you should see output similar to below

pi@raspberrypi:~/gsmmux $ ./gsmMuxd
/tmp/ttyGSM0   Command Channel
/tmp/ttyGSM1   Command Channel
/tmp/ttyGSM2   GNSS Tunneling
MUX started

4.stop and then disable gpsd

sudo systemctl stop gpsd.socket
sudo systemctl disable gpsd.socket

5. Start gpsd from the command prompt, point to the GNSS tunneling interface
/usr/sbin/gpsd -n /tmp/ttyGSM2

6.connect to command channel
minicom 115200 -D /tmp/ttyGSM1

7.Start GPS
AT+UGPS=1,4,67

8. View GPS data
cgps

Richard --OzzMaker.com --