125 pts Answer the following questions about GPIO registers, configuration and usage. a What is the memory address (in hex) for the GPIO Direction register for GPIO Port A? Ox b. What is the memory address (in hex) for the GPIO Digital Enable register for GPIO Port B? c. What is the package pin number (1-64) for GPIO Port C data bit 3, i.e., pin PC3 d. Complete the C code fragment to read the value of PC3 into variable my input. Use an appropriate register name to read from assuming definitions given as in the system hedder III (similar to the definitions shown in the excerpt at the beginning of the exam packet). Assume that the port has already been initialized properly. unsigned char my_input; // Read the value of PC3 my_input = e. Write an initialization function to configure GPIO Port D to use pins 0 and 1 as digital inputs and pins 6 and 7 as digital outputs. All other pins should be unchanged. Use appropriate register names, as would be given in the system header file. void init portD(void) { f. Suppose you see sample C code like below (e.g., in the textbook). Write equivalent code that you would use in the CPRE 288 lab when programming the GPIO port. GPIOA->DEN = 0x03; 125 pts Answer the following questions about GPIO registers, configuration and usage. a What is the memory address (in hex) for the GPIO Direction register for GPIO Port A? Ox b. What is the memory address (in hex) for the GPIO Digital Enable register for GPIO Port B? c. What is the package pin number (1-64) for GPIO Port C data bit 3, i.e., pin PC3 d. Complete the C code fragment to read the value of PC3 into variable my input. Use an appropriate register name to read from assuming definitions given as in the system hedder III (similar to the definitions shown in the excerpt at the beginning of the exam packet). Assume that the port has already been initialized properly. unsigned char my_input; // Read the value of PC3 my_input = e. Write an initialization function to configure GPIO Port D to use pins 0 and 1 as digital inputs and pins 6 and 7 as digital outputs. All other pins should be unchanged. Use appropriate register names, as would be given in the system header file. void init portD(void) { f. Suppose you see sample C code like below (e.g., in the textbook). Write equivalent code that you would use in the CPRE 288 lab when programming the GPIO port. GPIOA->DEN = 0x03