基于NIOS的I2C总线接口芯片AT24C16读写的实现

简要介绍了I^2C总线的基本结构和规范、I^2C总线接口芯片的基本工作原理、NIOS自带的PIO模块寄存器的读写原理和该PIO模块所使用的相应软件接口子程序，着重介绍了在NIOS上实现对12C接口芯片AT24C16读写时序的模拟和程序的编写实现。

Implementation of R/W for AT24C16 with I2C based on NIOS

This paper briefly describes fundamental structure and specifications of I~2C bus,basic operational principles of interface chip between I~2C bus,R/W concept of PIO module register self-owned by NIOS,and interface subprogram of relevant software used for such PIO module.It stresses on how to simulate the sequence to read or write I~2C interface chip(model: AT24C16) on NIOS and its program.