signal START# $($active$-$low, driven by some virtual peripheral device$)$ is at high level and output signal ACK# $($active$-$low, generated by your STM$32$ DISC$1$ microcontroller system$)$ must be set to high level. After a high$-$to$-$low transition on signal START# has been detected, the microcontroller system should place its new $8-$bit data byte on the D$7,...,$ D$0$ data lines. After that output signal ACK# should be driven low. After START# has made a low$-$to$-$high transition ACK# should return to high level as well. The timing diagram of this signal flow may repeat indefinitely. The microcontroller system should use the high$-$to low transition of the START# signal to generate a new data byte for transfer $($being incremented by eight in a modulo$-256$ fashion$).$ It is assumed that the rate of change for the START# signal is low enough for the microcontroller system to carry out the required tasks. Signals START#$,$ ACK# and D$7,...,$ D$0$ should be mapped to PC$7,$ PC$6$ and PE$15,...,$PE$8,$ respectively. You are to develop a hardware circuit and a program for this interface. Each signal interfaced to the microcontroller board must be buffered. The HCLK clock frequency should be set up to $144MHz($using the HSE $8MHz$ clock source$)$ and the PCLK$1$ clock frequency to $36MHz,$ respectively.

Explain your approach for the integrated hardware$/$software solution to the problem. That should include the necessary initialization of the GPIO and clock control registers $($i$.$e$.,$ GPIO ports signal$/$bit maps$).$ In addition, your solution should guarantee that signal ACK# stays at high level upon power up$.(10$ pts$.)$

Draw a detailed schematic diagram for the hardware part of this interface. Your schematics should include $P1$ and $P2$ Header and chip pin numbers, respectively. All signal lines should be labeled.

pts$.)$

Develop a syntactically correct $C$ program for this interface. You may assume that your program will have sufficient time to initialize all registers before the peripheral device is ready to drive signal START# low. You are not required to