Introduction - If you have any usage issues, please Google them yourself
The preparation of a simulated GPS applications, first of all, write the following information to the serial port $ GPRMC, 082020, A4060.9870, S21720.3278, W, 000.0.000.0,070707,005.6, W* 62 from the serial read this information and parse this information, the output longitude, latitude, Beijing