GPS module
Posted: Mon Jan 13, 2014 9:51 am
The current codes published in the forum have problems and are not reporting the correct data on the serial monitor. So I have set to and written this new code which differs considerably from the previous approach.
Previous code read the GPS NMEA stream (each prefixed by a code e.g. $GPRMC) and then converted the numerical data from ASCII to numbers. This is a complete waste of time, if you simply want to display the data as when it is sent to the serial monitor is is converted back to text!!!
So my approach has been to handle it as an ASCII string. First grab the string you want ($GPRMC contains most interesting data), then extract the field you want from the comma delimited stream, then finally display this is a defined format on a 16 x 2 line LCD display.
I attached the 'ino' file to this post but can't see it anywhere. If you don't find it please contact me, or look at ganymedeT.blogspot.co.uk
Code updated on blog 21-1-14 for bigger display 128x64
Previous code read the GPS NMEA stream (each prefixed by a code e.g. $GPRMC) and then converted the numerical data from ASCII to numbers. This is a complete waste of time, if you simply want to display the data as when it is sent to the serial monitor is is converted back to text!!!
So my approach has been to handle it as an ASCII string. First grab the string you want ($GPRMC contains most interesting data), then extract the field you want from the comma delimited stream, then finally display this is a defined format on a 16 x 2 line LCD display.
I attached the 'ino' file to this post but can't see it anywhere. If you don't find it please contact me, or look at ganymedeT.blogspot.co.uk
Code updated on blog 21-1-14 for bigger display 128x64