feat: add GPS UART module with NMEA parsing and checksum validation

[yousefyasser]

• Added checksum validation for incoming NMEA strings
• Added parsing of NMEA strings of type GPRMC to extract needed information, such as: latitude and longitude

Co-authored-by: @RasheedAtia
Co-authored-by: @SeifAbbas

[lurch]

There doesn't appear to be a main() function here which calls uart_gps_init or process_gps_data() ? 😕
The examples in pico-examples generally include at least one "standalone example" that creates a UF2 file that can be flashed to a Pico and actually "does something". If this is purely "library code" rather than a "standalone executable example", perhaps https://github.com/raspberrypi/pico-extras would be more suitable?

[yousefyasser]

Hello @lurch, ok I will add the main function right now

[lurch]

Hello @lurch, ok I will add the main function right now

Thanks! Could you also please clarify which licence this code is released under?

[yousefyasser]

Hello @lurch, ok I will add the main function right now

Thanks! Could you also please clarify which licence this code is released under?

Sure, this code is released under the MIT license

[lurch]

Sure, this code is released under the MIT license

A comment in the source-code saying that (for the benefit of future readers) would be great.

[peterharperuk]

What hardware are you using to test this? I've only seen i2c gps modules so far (I haven't looked too hard).

[yousefyasser]

What hardware are you using to test this? I've only seen i2c gps modules so far (I haven't looked too hard).

I used the Neo-6M GPS module.