How to display in your own module, a list of all the products of the Opencart store?

Question

PHP

Good afternoon everyone) Tell the noob) created an empty module in Opencarte 1.5.5.1.
The essence of its work: it should display all products with prices (+ a small addition) in the admin panel-> modules-> my module.
The problem itself is that I can not connect the output of goods in the module controller. Tell me how to do this? :)
Thank you)