正在找更新说明，，外设库真心不好用啊，
http://www.microchip.com/stellent/idcplg?IdcService=SS_GET_PAGE&nodeId=1406&dDocName=en535364
和谐手法
http://hi.baidu.com/airlonyan/blog/item/9918a7fa706cab1a6c22eb78.html/cmtid/e7dc70275bd0fe198a82a1d7
更新说明
http://ww1.microchip.com/downloads/en/DeviceDoc/README_C30.html#Fixed
v3.30 contains support for dsPIC33EP and PIC24EP devices.
Smart IO can now be provided the 'default' subset of format specifiers
default _DefaultInterrupt() function changes.
It is no longer necessary to specify a heap for simple STDIO.
唯一看出来的就是heap再也不用设置了，昨天我才发现printf要设这玩意儿
丫丫的新的加强版什么时候才能上市啊

ps 编译速度有了明显的提高