shared data problem in state machine

[MileP]

I have a state machine with each state reading one byte from serial port. The bytes read in state 1, 2, 3, 4 combines an unsigned 32-bit number.

How to store the bytes read from different state and combine them together in the end, without having unwired tunnel problem?

Thanks,

[RavensFan]

Shift registers.

But why would you read one byte in each of 4 different states?  That's like reading a book a letter at a time.  I would read all 4 bytes in a single state.

[MileP]

Yes, I decided to read 4 bytes at a time instead. Thanks.