How long will it take for the buffer to overflow at 9600 baud?
QuoteHow long will it take for the buffer to overflow at 9600 baud?That depends on how often/quickly data arrives. Once the last sentence in the batch arrives, there is a relatively long delay before another character arrives.
so you have about 67ms of continuous input before overflow if you're not reading.
Then, how can I figure out why there is such major delay in the position data?
On some GPS devices, you can turn these annoying features off, and see what it really has calculated.
Along with what michinyon suggests, my GPS has two modes - walk and drive. Perhaps yours can be similarly configured.
I think that you do need to pay attention to the time stamps vs. clock.
If I'm lucky my gps will understand the same commands.
Have you already seen thins link ? http://tutorial.cytron.com.my/2012/08/16/skm53-gps-module-starter-kit-skgps-53/ it gives some commands to change your chip configuration ( baud rate, NMEA sentences allowed ...) I didn't try, I don't use the SKM53 HTH