gsshch / libnmea-esp32

ESP-IDF component for libnmea, NMEA parser

NMEA parser component for ESP32 ESP-IDF

This is a wrapper around libnmea, in the form of an ESP-IDF component.

To use, clone the component into the components directory of your project, or add it as a submodule. See libnmea documentation for more details.

Example

Example project is provided inside example directory. It works the same way as parse_stdin.c example from libnmea, except that it reads NMEA sentences from UART. Connect TXD pin of GPS receiver to GPIO21 of ESP32, build and flash the example. Decoded NMEA messages will be displayed in the console.

Known issues

strptime function in newlib is less smart than the one in Glibc, and can not parse format strings such as '%H%M%S' (i.e. when there are no separators between numeric fields). Therefore date and time fields of NMEA messages are not parsed.

License

libnmea, this component, and the example project are licensed under MIT License.