1.异步通信软件模拟2.基于RS-232的串口通信3.基于RS-485的多机通信4. I2C总线协议的软件实现5. SPI总线在单片机系统中的实现6.-wire-1. Asynchronous communication software simulation 2. Based on the RS-232 serial communication 3. Based on the RS-485 Multi-machine communication 4. I2C bus protocol soft

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