when you cash out, instead of sending many packets, you can aggregate multiple products in the same packet, doing an array; thus you have better power efficiency, and less delay; so both Anastasi and Marcelloni would be very proud of us
- basket_address held the pointer to a value that is replaced for every new packet coming from the network layer, so the value itself it should be copied, not the pointer; this lead to board reset when dereferencing it
- product_id and customer_id are on 32 bits (no supermarket has less than 256 products and/or customers), otherwise I think it would fail
