This makes it possible to replace UART objects with dummy
implementations, for example. Or allows changing the `machine.UART` type
to `*machine.UART` without breaking compatibility.
* gps: buxfixes and refactoring of API to separate device from parser
Signed-off-by: deadprogram <ron@hybridgroup.com>
* gps: simplify time parser
Signed-off-by: deadprogram <ron@hybridgroup.com>
* gps: add support for RMC sentences
Signed-off-by: deadprogram <ron@hybridgroup.com>
* gps: small renaming to remove reduntant use of word GPS
Signed-off-by: deadprogram <ron@hybridgroup.com>