Analysis of the output from /dev/ttyUSB1 after the activation of $GPS_START\r\n
In other words, any software is unable to receive data from the device to display satellites
i don’t understand
Didn’t you type $GPS_START to the NMEA port, it will output NMEA frame?
I can see the same in Windows platform
I mean it should work like in the screenshot. However, I don’t see the same result.
CGPS program:
then what is the reason?
Any debug message showing the reason?
Cannot read NMEA frame?
Or anything wrong in the NMEA frame?
This is not my screenshot.
This is an example of the expected result when working with the EM7421 module.
then what is the reason?
Any debug message showing the reason?
Cannot read NMEA frame?
Or anything wrong in the NMEA frame?
“No receipt of any data from satellites.”
Can you help with which AT commands need to be entered to make the module work?
I saw the response of at!gpssatinfo?, it can see satellite
Why your program says so?
Yes, that’s great, we can see the number of satellites, but how can we then obtain GPS data from them? We need to work with this data to determine the geoposition
You need to put to outdoor area and connect antenna
After that you can start the gps fix by
At!gpsfix=1,255,10000
The result is the same.
How many satellite can it view?
no idea
you might need to contact distributor