/* Write ARM assembly functions for:
a)       	Function to take two unsigned parameters, and performs an ADD operation.
b)      	Function to Read the flag bits from the PSR.
Return both outputs to the main function.
Function prototype: lab5_act_1_1_add(int, int)
                    lab5_act_1_1_flag(int, int) */

#include <stdio.h>
#include <stdlib.h>

extern "C"{
   unsigned int lab5_act_1_1_add(int x, int y); //2 parameters.
   unsigned int lab5_act_1_1_flag(int x, int y);
}

void setup() {
  Serial1.begin(9600); //initialising the serial port.
}

int main()
{
  int x,y,result_add,result_flag;
  printf("Enter the 1st value: ");
  scanf("%d",&x);
  printf("%d\n",x); //to make sure it shows up on the serial monitor.
  printf("Enter the 2nd value: ");
  scanf("%d",&y);
  printf("%d\n",y); //to make sure it shows up on the serial monitor.
  
  result_add = lab5_act_1_1_add(x,y);
  result_flag = lab5_act_1_1_flag(x,y);
    
  printf("Result of addition: %d\n", result_add);
  printf("Flag bits from PSR: %X\n", result_flag);
 // Serial1.println(result_flag, HEX);
}