GPS主流协议——NMEA0803协议解析，输出时间，经度，维度，海拔，速度等信息-GPS mainstream protocol- NMEA0803 protocol analysis, output time, longitude, dimension, altitude, speed and other information

本程序实现功能为接受GPS接收机时间信息，并编码形成IRIG-B时间码，同时跟设备总线通过485进行通信。包括原理图，单片机程序及CPLD程序。-This program implements functionality GPS receiver for receiving the time information, and encoding IRIG-B time code is formed, while with the device 485 to communicate via the