I would like to read nmea traces when I’m login inside the AR7, somebody knows how to do it?
I know there is a port in the target /dev/nmea which is loaded when the /etc/legato/usbmodes contains the nmea. Also, I set the gps configuration previously with the at command at!gpsfix=1,180,500 but nothing appears when I try cat /etc/nmea
What I am doing wrong?
Some missing step?
You have to echo “$GPS_START” into /dev/nmea
echo "\$GPS_START" > /dev/nmea
and then read your nmea sentences from /dev/nmea
Thank you for your answer.
This is the ouput when I’ve tried to use the command:
root@swi-mdm9x15:~# echo "\$GPS_START" > /dev/nmea
[ 111.611414] nmea_write failed to write 11 bytes: -1.
[ 111.615382] nmea: smd opened
-sh: echo: write error: Input/output error
note: the /etc/legato/usbmodes contains the ‘nmea’ option so, the /dev/nmea is loaded correctly.
Thank you again,