Example #$9$

Using the HLSM concept, design an alarm system that sets a single$-$bit output alarm to $1$ when the average temperature of four consecutive samples meets or exceeds a user$-$defined threshold value. A $32-$bit unsigned input CT indicates the current temperature and a $32-$bit unsigned input WT indicates the warning threshold. Samples should be taken every few clock cycles. When a single$-$bit input clr is set to $1,$ it disables the alarm and the sampling process. Draw the HLSM state transition diagram, design the datapath and the controller.

In the library, registers, adders, shifter registers, and comparators are available.