Question: 2. Suppose a systein uses a button to connect PB4 to ground and the microcontroller polls to see when this occurs. Write two lines of

2. Suppose a systein uses a button to connect PB4 to ground and the microcontroller polls to see when this occurs. Write two lines of C code to properly configure this pin. That is, assign values to the two pertinent special-function registers. 2. Suppose a systein uses a button to connect PB4 to ground and the microcontroller polls to see when this occurs. Write two lines of C code to properly configure this pin. That is, assign values to the two pertinent special-function registers
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