Sorry, I mean the mail's content 
I can not read the mail, there's only a *.bin file attached 
发自我的iPhone


------------------ Original ------------------
From: Valdis.Kletnieks <Valdis.Kletnieks@vt.edu>
Date: 周三,6月 1,2016 0:40 下午
To: 909655299 <909655299@qq.com>, munagala.nareshbabu <munagala.nareshbabu@gmail.com>, kernelnewbies <kernelnewbies@kernelnewbies.org>
Subject: Re: How to enable IIO driver in 3.18 kernel

On Wed, 01 Jun 2016 12:18:55 +0800, "FrankYu" said:
> How can I read the content?

I admit confusion.  The content of what?  And read it from where? Userspace?

int fd = open ("/dev/iio:whatever",yadda yadda);
int rc = read(fd, &buffer, sizeof(buffer);

Same as reading any other device.

If you mean something else, you'll have to explain..