PlainProtocol Library does not work...

Not at all... Not even sure why need this layer? But it does seem could be useful...
Anyway... Can download zip from bottom of this page:
https://www.dfrobot.com/blog-69.html
BTW... This page does not work as all the links are broken (nice....)
https://community.dfrobot.com/
And of course can pull from GitHub here:
https://github.com/DFRobot/PlainProtocol
Wherever you get it, it will not work as as typical call routines use structure(s) not present in PlainProtocol library.
Even the plainprotocol demo *.ino file on the Github site does not work with its adjacent PlainProtocol code.
There is a mismatch somewhere, and an up-to-date PlainProtocol does not appear to be available anywhere? Or did I dfrobot it? Anyone else see or run into this?
For example some typical mismatch problems are:
bluno_shield_test.ino: In function 'void loop()':
bluno_shield_test:106: error: 'class PlainProtocol' has no member named 'equals'
bluno_shield_test:107: error: 'class PlainProtocol' has no member named 'read'
walkabout wrote:Was not sure... Anyway, any ideas on getting past the plainprotocol issue? Is there a library update available?
DFROBOT's posted code shown here will not work:
Will not work... because of this line (for example)...
if (mytest.equals("speed")) { //send "100;" in Serial monitor
I do not see support in the plainprotocol library for the "equals" structure.
Thanks!
I took a glance at the post, but wondering what's it for? which board it supplies for?
So what are you doing now~ I am quiet confused, could you share with me??

DFROBOT's posted code shown here will not work:
Will not work... because of this line (for example)...
if (mytest.equals("speed")) { //send "
I do not see support in the plainprotocol library for the "equals" structure.
Thanks!
