ADI系列Blackfin家族bf561芯片的按键与中断控制实验程序，适用亿旗的开发板，里面有按键的初始化、中断处理初始化、外设接口的初始化，简单明了，正在学习bf561的朋友可以研习一下。-ADI Blackfin family bf561 series chip key interrupt control and experimental procedures for flag billion development board, which has key initialization,