Using the ARMSim + Embest plugin produce a program that behaves in the following

ID: 657436 • Letter: U

Question

Using the ARMSim + Embest plugin produce a program that behaves in the following manner:

The Keypad is assumed to be numbered like so:

0 1 2 3
4 5 6 7
8 9 A B
C D E F
The 8 segment display should display the value of the last key pressed, starting out blank.
The LCD should display a single integer, starting out at 255.
Pressing an even-numbered value should add the amount to the value displayed.
Pressing an odd-numbered value should subtract the amount from the value displayed.
Pressing either of the black buttons should cause a reset. The 8-segment display should be blanked and the LCD should display the starting value.
You can assume that the user will never press more than one key or button at a time.
Meeting the above requirements is a bare minimum for the assignment. In order to get full credit, your program should:

have appropriate comments
check for errors
have a readable output
Please submit a single file called "project3.s" to the assignment.

Explanation / Answer

int main(void)

{

int i;

volatile unsigned char * ModeRegister1;

volatile unsigned char * OutputRegister1;

volatile unsigned char * ModeRegister2;

volatile unsigned char * OutputRegister2;

ModeRegister1 = 0xB7A05008;

OutputRegister1 = 0xB7A05000;

ModeRegister2 = 0xB7A03008;

OutputRegister2 = 0xB7A03000;

*ModeRegister1 =0x00FF;

*ModeRegister2 =0x00FF;

while (1)

{

*OutputRegister1 = 0x003F; // Display 0

*OutputRegister2 = 0x0000; // Display 0