If you have a fantastic idea, you have about a year to get investors to buy you out before the device is duplicated - even patents may not give you much more time as you must pay the legal bill to defend the patent.
Any computer code can be recreated by good programmer(s). The copycats often improve on the original: better, faster, better interface.
Your question comes up very often. If you ask, you likely do not have the expertise to move up the technology ladder to fully protect the code.
Get it working. Get some interest. Find a buyer. Move on to next great idea.
Ray