Gerade gefunden:
http://www.rcgroups.com/forums/showpost.php?p=22204996&postcount=6061
OK, das erklärt warum ich am GPS Modul später nix mehr sehe - wenn ich auf 9600 lausche. Werde dann mal schauen ob mit 38400 was kommt nachdem das Rabbit versucht hat das GPS zu konfigurieren.
Originally Posted by Dreddix View Post
Right after being turned ON, rabbit sends 2 commands to GPS module.
1 - on 9600bps rabbit sends command to switch bps to 38400, right after that-
2 - on 38400bps rabbit sends command for 5Hz
Then rabbit only listen on 38400. Even 1Hz will work, but positioning will be really poor.
Easy. Commands works only on U-Blox modules. All other modules will not understand commands (all brands have their own commands), but if you set up them on 38400 and 5-10Hz manually- it will work. That is why rabbit work with any other module that is set up for 38400bps, and only 1 wire is enought (TX-line from GPS)
Right after being turned ON, rabbit sends 2 commands to GPS module.
1 - on 9600bps rabbit sends command to switch bps to 38400, right after that-
2 - on 38400bps rabbit sends command for 5Hz
Then rabbit only listen on 38400. Even 1Hz will work, but positioning will be really poor.
Easy. Commands works only on U-Blox modules. All other modules will not understand commands (all brands have their own commands), but if you set up them on 38400 and 5-10Hz manually- it will work. That is why rabbit work with any other module that is set up for 38400bps, and only 1 wire is enought (TX-line from GPS)
OK, das erklärt warum ich am GPS Modul später nix mehr sehe - wenn ich auf 9600 lausche. Werde dann mal schauen ob mit 38400 was kommt nachdem das Rabbit versucht hat das GPS zu konfigurieren.