GPS problem

Mods & Addons
#1

Hi,

My software and firmware verison are leo_2020-02-12.img.xz and leo_firmware_v1.0.0.hex .

I am trying to add the GY-NEO6MV2 GPS sensor (https://www.elektor.com/gy-neo6mv2-with-neo-6m-gps-module) to the Rover.

I can read the GPS message directly by using PC USB serial port. It looks like this:

$GPGLL,2500.80675,N,12132.86835,E,061637.00,A,A*64
$GPRMC,061638.00,A,2500.80683,N,12132.86810,E,0.473,,240420,,,A*7C
$GPVTG,,T,,M,0.473,N,0.876,K,A*2A
$GPGGA,061638.00,2500.80683,N,12132.86810,E,1,04,2.65,77.4,M,17.1,M,,*66
$GPGSA,A,3,11,22,01,07,,,,,,,,,5.18,2.65,4.45*0C
$GPGSV,2,1,05,01,80,148,38,05,,,22,07,61,258,31,11,61,025,46*4A
$GPGSV,2,2,05,22,26,133,36*4C

I follow the GPS integration guide to connect the GPS sensor to CORE2-ROS. As following picture:
Imgur

But I can’t get any message from topic /gps_fix. like this:
Imgur

Do you have any suggestion? What debugging procedure can I do?
By the way, I was also wondering if I can get the serial message from CORE2-ROS in RPI terminal?

Thanks

#2

What baudrate does your module operate on?

#3

the baudrate is 9600.

#4

Try to change RX/TX Pin. On my Module i had to make cross over RxD and TxD

#5

It works now, but I don’t know why. Maybe it’s the problem of my GPS signal or connecting wire.

Sorry for bothering and thanks for replies.

#6

That’s nice to hear. I’ll try to add more logging messages to the firmware in the future, so it will be easier to analyze what is going on.